Journal articles: 'Aluminium die casting'

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Arulra, M., P. K. Palani, and L. Venkatesh. "Optimization of Process Parameters in Stir Casting of Hybrid Metal Matrix (LM25/SiC/B4C) Composite Using Taguchi Method." JOURNAL OF ADVANCES IN CHEMISTRY 13, no. 11 (March 29, 2017): 6038–42. http://dx.doi.org/10.24297/jac.v13i11.5774.

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Aluminium based composites exhibit many attractive material properties such as increased stiffness, wear resistance, specific strength and vibration damping and decreased co-efficient of thermal expansion compared with the conventional aluminium alloys. Aluminium Matrix Composites consist of non-metallic reinforcement which offers advantageous properties over base material. Reinforcements like SiC, B4C and Al2O3 are normally preferred to improve the mechanical properties. Here Aluminum LM25 is selected as matrix material while Silicon carbide and Boron carbide are selected as reinforcement material. The fabrication of aluminium matrix was done by stir casting method. In the present study an attempt has been made to investigate the effect of three major stir casting parameters (stir speed, stir duration and preheated temperature of reinforcement material) on stir casting of Aluminium LM25 - SiC - B4C composite. Experiments were conducted based on Taguchi methodology. Taguchi quality design concepts of L9 orthogonal array has been used to determine S/N ratio and through S/N ratio a set of optimum stir casting parameters were obtained. The experimental results confirmed the validity of Taguchi method for enhancing tensile strength of castings.

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Arulraj, M., P. K. Palani, and L. Venkatesh. "Optimization of Process Parameters in Stir Casting of Hybrid Metal Matrix (LM25/SiC/B4C) Composite Using Taguchi Method." JOURNAL OF ADVANCES IN CHEMISTRY 13, no. 9 (February 22, 2017): 6475–79. http://dx.doi.org/10.24297/jac.v13i9.5777.

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Aluminium based composites exhibit many attractive material properties such as increased stiffness, wear resistance, specific strength and vibration damping and decreased co-efficient of thermal expansion compared with the conventional aluminium alloys. Aluminium Matrix Composites consist of non-metallic reinforcement which offers advantageous properties over base material. Reinforcements like SiC, B4C and Al2O3 are normally preferred to improve the mechanical properties. Here Aluminum LM25 is selected as matrix material while Silicon carbide and Boron carbide are selected as reinforcement material. The fabrication of aluminium matrix was done by stir casting method. In the present study an attempt has been made to investigate the effect of three major stir casting parameters (stir speed, stir duration and preheated temperature of reinforcement material) on stir casting of Aluminium LM25 - SiC - B4C composite. Experiments were conducted based on Taguchi methodology. Taguchi quality design concepts of L9 orthogonal array has been used to determine S/N ratio and through S/N ratio a set of optimum stir casting parameters were obtained. The experimental results confirmed the validity of Taguchi method for enhancing tensile strength of castings.

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Ardeleanu, Laurenţiu, Constantin Bratu, and Ioan Mărginean. "Effects of Vibration and Salts Treatments on Aluminium Alloy Properties Used in Mould Manufacture." Advanced Materials Research 1128 (October 2015): 58–63. http://dx.doi.org/10.4028/www.scientific.net/amr.1128.58.

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Metallic mould properties are influenced by the technological process used on casting. The mechanical properties of aluminium castings can be affected by dissolved gases, heterogeneous impurities or shrinkage remaining in casting after solidification. Dissolved gases and oxide inclusions in aluminium all have a deleterious effect on casting quality. The treatment of molten aluminium using vibrations and salts was found to be highly efficient in refining the microstructure of the alloy. The main objective of the paper is to understand the effects of vibrations and salts treatment on the final microstructure and changes that take place and influences aluminium alloy properties used in mould manufacture. The microstructural changes have a great significance in improving the properties of aluminium alloy castings. Understanding this effects and the modification mechanism can undoubtedly be of great significance for improving casting quality. Fluxes based on a KCl-NaCl mixture may be used to cover and protect the metal from oxidation. Most fluxes are based on a mixture of KCl and NaCl, which forms at low-temperature (665 °C) eutectic.

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Gaspar, Stefan, and Ján Pasko. "Analysis of Fracture Process and Common Defects in Casting Alloys EN43100 Manufactured by Die Casting Technology." Advanced Materials Research 1077 (December 2014): 39–43. http://dx.doi.org/10.4028/www.scientific.net/amr.1077.39.

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Recent research in the process of die casting production of aluminium alloys which are nowadays deeply implemented in the rapidly developing automobile, shipping and airline industry aims to increase the manufacture and quality properties of the casting in order to obtain its high mechanical properties at acceptable economic costs. In terms of ensuring the quality indicators in the production of aluminium castings it is necessary to pay close attention to internal structural quality of the castings characterized by type and extent of foundry defects (cavities, Al2O3 particles, internal cold laps). The presenting contribution deals with the analysis of the fracture process, the microorganism disturbance of test samples, the impact of casting speed on the occurrence and extent of the castings porosity and reasons for the internal foundry defects of casting alloys EN 43100 manufactured by die casting technology.

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Wongpreedee, Kageeporn, Panphot Ruethaitananon, and Tawinun Isariyamateekun. "Interface Layers of Ag-Al Fusing Metals by Casting Processes." Advanced Materials Research 787 (September 2013): 341–45. http://dx.doi.org/10.4028/www.scientific.net/amr.787.341.

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The materials of fusing metals commercially used in the jewelry niche marketing is seen as precious metals. An innovation of fusing metals searched for new materials to differentiate from the markets for mass production. In this research, it studied the bonding processes of silver and aluminium metals by casting processes for mass productions. The studies had been varied parameters on the types of aluminium and process temperature controls. This research had used two types of aluminium which were pure aluminium 99.99% and aluminum 5083 alloys bonding with pure silver 99.99%. The temperatures had been specified for two factors including casting temperature at X1, X2 and flasking temperature at Y1, Y2. From the results, it was found that the casting temperature at 730°C and the flasking temperature at 230 °C of pure silver-aluminum 5083 alloys bonding had the thinnest average thickness of interface at 427.29 μm. The microstructure of pure silver-aluminum 5083 alloy bonding was revealed eutectic-like structures at the interfaces. The EDS analysis showed the results of compounds at interface layers of Ag sides giving Ag2Al intermetallics on pure silver-aluminum 5083 alloy bonding unlike pure silver-pure aluminium bonding giving Ag3Al intermetallics.

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Adianta, Andri Willy, Suprianto Suprianto, Arnius Daely, and Mikael F. Bangun. "Studi Fluiditas dan Karakteristik Aliran pada Pengecoran Al-Si Alloy Menggunakan Simulasi Numerik." Talenta Conference Series: Energy and Engineering (EE) 1, no. 1 (October 16, 2018): 007–12. http://dx.doi.org/10.32734/ee.v1i1.102.

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Aluminium silikon alloy merupakan paduan aluminium yang banyak digunakan dalam bidang teknik. Paduan ini memiliki kekuatan yang baik dan banyak diproduksi menjadi suatu komponen melalui proses pengecoran. Kandungan silikon dapat mengakibatkan penurunan fluiditas coran alumunium yang pada akhirnya akan menurunkan kualitas coran, fluiditas ini juga dipengaruhi temperatur pada saat penuangan alumunium cair. Penelitian ini bertujuan untuk mengetahui efek temperatur penuangan terhadap fluiditas, karakteristik aliran dan cacat coran pada pengecoran aluminium silikon alloy menggunakan cetakan pasir. Pengecoran dilakukan dengan gravity casting, analisa aliran simulasi meliputi distribusi kecepatan aliran, temperatur, tekanan, cacat permukaan dan fluiditas yang terjadi pada saat proses pengisian rongga cetak serta perbandingan fluiditas coran dan cacat permukaan pada eksperimental. Temperatur penuangan 685, 710, 735, 760 dan 785°C dengan ketebalan cetakan pola 1, 3, 5, 7, 9, dan 12 mm. Proses simulasi menggunakan software berbasis computational fluid dynamic. Hasil penelitian diperoleh temperatur tuang 785oC memiliki kecepatan aliran tertinggi yaitu sebesar ±0.145 m/s pada rongga 12 mm dan distribusi temperatur yang tinggi yaitu sebesar ±759 oC pada rongga 3 mm, sedangkan temperatur tuang 685oC memiliki distribusi tekanan yang tinggi yaitu sebesar ±107287 Pa pada rongga 6 mm. Cacat permukaan terbanyak pada temperatur tuang 785oC dan temperatur tuang 685oC paling sedikit. Fluiditas coran terbaik pada temperatur 785oC dimana rongga 12, 9, 7, 5 dan 3 mm terisi penuh dan 1 mm mencapai 181.4 mm. Aluminum silicon alloy is an aluminum alloy that is widely used in engineering. This alloy has good strength and plenty of it are produced into a component through the casting process. Silicon content could result in a decrease in fluidity of aluminum castings which in turn would reduce the quality of casting. This fluidity is also influenced by temperature at the time of pouring liquid aluminum. This study aims to determine the effect of pouring temperature on fluidity, flow characteristics and casting defects on aluminum alloy silicon casting by using sand mold. Casting was conducted by gravity casting, simulation flow analysis including flow velocity distribution, temperature, pressure, surface and fluidity defects that occured during the process of filling the mold cavity as well as the comparison of the fluidity of castings and surface defects in the experiment. Casting temperatures was 685, 710, 735, 760 and 785°C with a mold thickness of patterns 1, 3, 5, 7, 9 and 12 mm. The simulation process used software based on computational fluid dynamic. The result showed pouring temperature of 785oC had the highest flow velocity of ± 0.145 m/s in 12 mm cavity and a high temperature distribution of ± 759oC in cavity of 3 mm, while the pouring temperature of 685oC had a high pressure distribution of ± 107287 Pa in 6 mm cavity. Most surface defects occurred at pour temperature of 785oC and the least at pour temperature of 685oC. The best castings liquidity occurred at temperature of 785oC where the cavity of 12, 9, 7, 5 and 3 mm was fully filled and 1 mm reached 181.4 mm.

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Gaspar, S., and J. Pasko. "Pressing Speed, Specific Pressure and Mechanical Properties of Aluminium Cast." Archives of Foundry Engineering 16, no. 2 (June 1, 2016): 45–50. http://dx.doi.org/10.1515/afe-2016-0024.

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Abstract Recent research in the process of aluminum alloy die castings production, which is nowadays deeply implemented into the rapidly growing automobile, shipping and aircraft industries, is aimed at increasing the useful qualitative properties of the die casting in order to obtain its high mechanical properties at acceptable economic cost. Problem of technological factors of high pressure die casting has been a subject of worldwide research (EU, US, Japan, etc.). The final performance properties of die castings are subjected to a large number of technological factors. The main technological factors of high pressure die casting are as follows: plunger pressing speed, specific (increase) pressure, mold temperature as well as alloy temperature. The contribution discusses the impact of the plunger pressing speed and specific (increase) pressure on the mechanical properties of the casting aluminum alloy.

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Gaspar, Stefan, Ján Pasko, and Ján Majerník. "Crystallization of Aluminium Alloys." Applied Mechanics and Materials 624 (August 2014): 48–51. http://dx.doi.org/10.4028/www.scientific.net/amm.624.48.

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The structure and properties of cast metals and alloys are in a high degree influenced by crystallization conditions. By the technological interventions into the crystallization process the mechanical properties and structural parameters of castings can be enhanced. The present contribution deals with the regularities of crystallization of alloys Al-Si produced by die casting process.

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Flood, S. "Modelling of aluminium casting." Materials Science and Technology 8, no. 2 (February 1992): 151–52. http://dx.doi.org/10.1179/mst.1992.8.2.151.

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Papis, K. J. M., B. Hallstedt, J. F. Löffler, and P. J. Uggowitzer. "Interface formation in aluminium–aluminium compound casting." Acta Materialia 56, no. 13 (August 2008): 3036–43. http://dx.doi.org/10.1016/j.actamat.2008.02.042.

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Hussainy, Syed Ferhathullah, Mohd Viquar Mohiuddin, P. Laxminarayana, S. Sundarrajan, and A. Krishnaiah. "Analysis of Shrinkage Characteristics of Aluminium Silicon Alloy." Journal for Manufacturing Science and Production 16, no. 3 (September 1, 2016): 163–71. http://dx.doi.org/10.1515/jmsp-2016-0002.

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AbstractAnalysis of shrinkage characteristics of Aluminium-Silicon alloy was studied theoretically and experimentally. The Aluminium alloys considered in the study are A413 (LM6), A360 (LM9) and A380 (LM24). Extensive literature survey has suggested that cavity filling and solidification process are two most critical aspects to produce high quality casting components. A statistical model of parameters and response to understand the influence of parameters on shrinkage and casting yield studies has been presented. Experiments were conducted in foundry in industrial environment to produce commercially treated aluminium alloy castings in sand mould. Alloy was found to be most significant factor influencing shrinkage. The yield of casting was improved using insulating and exothermic sleeves. Solidification time of exothermic riser was 10 % more than insulated riser. Thus, in order to produce radiographic quality casting a theoretical and experimental method is presented so that number of trials in foundry is reduced which leads to increased reliability and productivity. Study also shows that by using sleeves considerable metal is saved, energy saving during melting, improved quality, reduced cost and increased capacity of plant can be achieved.

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Puga, Hélder, Joaquim Barbosa, and Joana Oliveira. "Use of Acoustic Energy in Sand Casting of Aluminium Alloys." Advanced Materials Research 690-693 (May 2013): 2366–70. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.2366.

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During the last years, some researchers have focused the development of ultrasonic microstructure refinement /modification techniques of die-casting aluminium alloys, to improve their properties. The developed techniques are highly efficient when applied to the die-casting process, but their capability with sand and ceramic moulding are unknown. Sand/ceramic aluminium castings are prone to coarse microstructure, porosities and inclusions due to low cooling rates and turbulent gravity pouring, and suitable processing techniques are required to eliminate those drawbacks. This article reports some results of a research work aiming the development of a reliable, low-cost and environmentally friend casting process, for geometrically complex and massive high strength sand/ceramic aluminium castings, to eliminate traditional soundness related defects and simultaneously promote the development of refined microstructures. The article presents the effect of applying ultrasound to AlSi9Cu3 alloy during solidification on a sand mould on the resultant microstructure. Results include microstructure characterization and its relationship with thermal analysis data collected from the center of the cast samples during cooling.

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Singh, Rupinder. "COLD CHAMBER DIE CASTING OF ALUMINIUM ALLOY: A CASE STUDY." Journal of Mechanical Engineering 46, no. 1 (May 11, 2017): 22–27. http://dx.doi.org/10.3329/jme.v46i1.32519.

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In the present work cold chamber die casting solution of Al alloy has been investigated as a case study of industrial component (crankcase). The study presented in this paper is based upon Taguchi based model on dimensional accuracy in cold chamber die casting. The castings prepared at proposed parametric settings have been studied for functional validation of the parts, as per statistical control point of view. The result of study highlights significant improvement in dimensional accuracy (as regards to statistical process control isconcerned) at proposed parametric settings of cold chamber die casting process.

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Izman, S., Amirreza Shayganpour, and M. H. Idris. "Effect of Casting Parameters on Porosity in LFC." Applied Mechanics and Materials 148-149 (December 2011): 1198–201. http://dx.doi.org/10.4028/www.scientific.net/amm.148-149.1198.

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Cast aluminium alloys often contain microstructural defects resulting from the casting process such as porosity. Developments of Lost foam casting (LFC) process is considered as one of the most rapid in casting technology owing to its unique advantages on energy savings and capabilities to produce castings with thin sections. In the present research, experimental investigations in lost foam casting of aluminium-silicon cast alloy, LM6, were conducted. The main objective of the study was to evaluate the effect of different pouring temperatures, slurry viscosities, vibration times and sand sizes on the porosity of castings. A stepped pattern was used in the study and the focus of the investigations was at the thinnest 3 mm section. A full 2-level factorial design experimental technique was employed to plan the experiment and subsequently identify the significant factors which affect the casting porosity. The result shows that increasing in the pouring temperature decreases the porosity in the thin-wall section and finer sand size is more favourable than coarse size for LFC mould making process.

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Korchmit, Anton Viktorovich, Nikita V. Martyushev, and Yuriy Yu Drozdov. "Casting Quality Enhancement of Bushings Made of Foundry Aluminium Bronzes." Key Engineering Materials 685 (February 2016): 459–62. http://dx.doi.org/10.4028/www.scientific.net/kem.685.459.

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The paper is devoted to the establishment of the technology of castings manufacture out of multicomponent aluminium bronzes for oil and gas producing equipment. Aluminium bronze containing iron has been chosen as a material for casting manufacture. Founding into sand mixtures has been chosen as a manufacturing method. It has been shown that this type of founding allows obtaining the castings with minimal subsequent treatment and high quality surface. The use of the coke furnace at metal melting allows obtaining the castings with high performance characteristics due to gas protection of the melt.

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Santoso, Eko Budi, and Eva Hertnacahyani Herraprastanti. "Pelatihan Pengecoran Limbah Aluminium Rumah Tangga untuk Meningkatkan Nilai Jual bagi Masyarakat di Kabupaten Madiun." J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat) 3, no. 2 (October 20, 2019): 81. http://dx.doi.org/10.30734/j-abdipamas.v3i2.538.

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ABSTRACTÂ The purpose of this activity is to conduct training for the community, especially from around Madiun, to be able to do aluminum waste treatment by doing re-casting to be printed into a craft that is worth selling. Re-casting in this activity uses the simplest tool in the hope that it can be reached by the target community. This casting can be done by using a simple kitchen by using a fire furnace with combustion using LPG. The training activity was held for 2 (two) days, with the details of the first day in the form of material about metals and casting while the second day was carried out by the practice. The results of this activity are in creasing knowledge about metals, especially aluminum and knowledge of simple casting practices.Keywords: Waste, aluminum, casting, sand moldABSTRAKÂ Tujuan dari kegiatan ini adalah melakukan pelatihan kepada masyarakat khususnya dari sekitar Madiun agar dapat melakukan pengolahan limbah aluminium dengan melakukan pengecoran ulang untuk di cetak menjadi kerajinan yang layak jual. Pengecoran ulang dalam kegiatan ini menggunakan alat yang paling sederhana dengan harapan bisa dijangkau oleh masyarakat kalayak sasaran. Pengecoran ini dengan menggunakan dapur sederhana dengan menggunakan tungku api dengan pembakaran menggunakan LPG. Kegiatan pelatihan ini dilaksanakan selama 2 (dua) hari, dengan rincian hari pertama berupa materi tentang logam dan pengecoran sedang hari kedua adalah dengan pelaksanaan praktek. Hasil dari kegiatan ini adalah bertambahnya pengetahuan mengenai logam khususnya aluminium dan pengetahuan praktek pengecoran sederhana.Â Kata Kunci: Limbah, aluminium, pengecoran, cetakan pasir

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Wang, Xiang Jie, Gang Sun, Li Juan Wang, Peng Wei Li, and Jian Zhong Cui. "A New Approach of Casting Aluminium Alloy Bar by Applying Low Frequency Electromagnetic Field." Materials Science Forum 794-796 (June 2014): 167–71. http://dx.doi.org/10.4028/www.scientific.net/msf.794-796.167.

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Aluminum is the richest metallic element in the earth, the ingots cast by DC casting process are usually extruded into aluminum bars. When the final products do not require high strength, this process appears to be low efficiency and high cost. We try to design a new technology to cast aluminum bar by horizontal direct chill (HDC) casting process directly. An electromagnetic field is applied during the horizontal continuous casting of 6061 aluminium bar with a diameter of 30mm. The experimental results show the asymmetry of the sump can be overcome by electromagnetic field. Ingot with good upper and lower surface quality is obtained. The structure of ingot is refined and the angle between growth direction and horizontal direction becomes small with increasing casting speed.

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Djurdjevic, Mile B., Iban Vicario, and Gerhard Huber. "Review of thermal analysis applications in aluminium casting plants." Revista de Metalurgia 50, no. 1 (March 30, 2014): e004. http://dx.doi.org/10.3989/revmetalm.004.

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Maharajan, B., and Dr S. Balasubramanian. "Design and Analysis Fixtures for Aluminium Die Casting Component." International Journal of Innovative Research in Computer Science & Technology 5, no. 4 (July 31, 2017): 306–12. http://dx.doi.org/10.21276/ijircst.2017.5.4.2.

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Sekar, K., Allesu Kanjirathikal, and M. A. Joseph. "Comparison Study of As-Cast and T6 Condition of Microstructure, Bending Strength and Double Shear Strength of A356 Alloy by Gravity, Vacuum and Squeeze Casting." Applied Mechanics and Materials 592-594 (July 2014): 102–5. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.102.

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The hardness, bending strength, and double shear strength of A356 aluminium alloy was studied under as cast and T6 heat treatment conditions obtained with gravity casting, vacuum casting and squeeze casting methods. The results of these three casting methods have been compared. The hardness, bending strength of A356 alloy after T6 obviously increased; the hardness value of both vacuum casting and squeeze casting has been found to be 62 HRB which is relatively high compared to gravity casting. The bending strength of gravity casting is 299 MPa (22% increase) compared to vacuum casting. However, after T6 heat treatment, the double shear strength values of all these three castings decreases.

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Ten, Edis B., and Alexander S. Drokin. "High Aluminium Cast Iron AL22D – Advanced Multifunctional Material." Applied Mechanics and Materials 121-126 (October 2011): 186–90. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.186.

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At the present work are considered the peculiarity of highly alloyed Aluminum cast iron Al22D crystallization, its casting, mechanical, exploitation and thermal properties, and also presented the examples of produce of castings from it.

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Wang, Fei Fei, Yan Wei Sui, Yao Jian Ren, Xin Zhao, and Zhi Sun. "Defects Analysis and Improvement for Electricmotorcar Aluminum Alloy Wheel by Gravity Casting." Advanced Materials Research 189-193 (February 2011): 3880–85. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.3880.

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Analysis the electricmotorcar aluminum wheels’ hole defect on macroscopic and microscopic, observed that the main defects、concentrated site and the main alloy phase. Combined with the local casting technological parameters, the filling and solidification process of aluminium alloy hub was simulated by using Anycasting software. The results showed that: castings filling smoothly, at the junction of the spoke and the rim and the hub central are easy to produce casting defects. Using the optimized process parameters that is lower pouring temperature, higher pouring height and set the vent to experiment, after comparing the results with the original process known, Shrinkage and porosity defects decreased, but there are still some degree of defects, indicating optimized process parameters have some effect.

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Santos, Jorge, Anders E. W. Jarfors, and Arne K. Dahle. "Filling, Feeding and Defect Formation of Thick-Walled AlSi7Mg0.3 Semi-Solid Castings." Solid State Phenomena 256 (September 2016): 222–27. http://dx.doi.org/10.4028/www.scientific.net/ssp.256.222.

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Aluminium semi-solid castings have gained increased attention due to their superior mechanical properties, lower porosity compared to conventional high pressure die cast material. These characteristics suggests that semi-solid casting should be suitable to produce thick-walled structural components, yet most successful applications of semisolid casting have been for thin-walled components. There is a lack of understanding on filling and feeding related defect formation for semi-solid castings with thick-walled cross-sections. In the current study an AlSi7Mg0.3 aluminium alloy was used to produce semi-solid castings with a wall thickness of 10mm using a Vertical High Pressure Die Casting machine. The RheoMetalTM process was used for slurry preparation. The primary solid α-Al fraction in the slurry was varied together with die temperature. The evaluation of the filling related events was made through interrupted shots, stopping the plunger at different positions. Microscopy of full castings and interrupted test samples were performed identifying the presence of surface segregation layer, shear bands, gas entrapment, shrinkage porosity as well as burst feeding.

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Hadi, S., L. Agustriyana, and Subagiyo Subagiyo. "Project Based Learning on Casting of Aluminium Tensile Test Specimen for Mechanical Engineering Students, State Polytechnic of Malang on Odd Semester of Academic Year 2016/2017." Journal of Education Research and Evaluation 1, no. 1 (February 3, 2017): 6. http://dx.doi.org/10.23887/jere.v1i1.9844.

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The problem faced by students is the difficulty of understanding on metal casting topic in the lesson of Materials Technology which is conducted by lectures only. The research objective is to find out the improvement of score on metal casting topic for 1G students from Mechanical Engineering Department, State Polytechnic of Malang (Polinema) in odd Semester, Academic Year 2016/2017. Research method were facilitation of applied metal casting through pretest of metal casting, added a description of the design and modification of metal mould for Aluminium, visit to a home industry of Aluminium casting, students practice of Aluminium casting in a home industry, student groups presentation and discussion in the subtopics of (1) design and mould manufacture, (2) Aluminium casting practice, and (3) tensile testing with cast Aluminium specimen, as well as posttest on metal casting. The research result is an increasing in average score from 46.56 to 53.6 (22%) that means by adding the practice to the theory involved is increase a significant impact on understanding of Aluminium casting for students.

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Asokan, Manivannan, Sasikumar Rathinasabapathy, Shaik Dawood Abdul Khadar, and Mohammed Sadique Khan. "Novel Combined Feeding Approach to Produce Quality Al6061 Composites for Heat Sinks." High Temperature Materials and Processes 38, no. 2019 (February 25, 2019): 647–50. http://dx.doi.org/10.1515/htmp-2019-0009.

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AbstractThis elementary work aims to address agglomeration and non-uniform dispersion of reinforcement particles in stir casting using Al6061 alloy (AA 6061) as a matrix and Aluminium oxide (Al2O3) as reinforcement particles. A novel combined feeding method of Encapsulate feeding technique & Two Step Stir Casting was developed & attempted to produce good quality composites by varying weight fractions of Aluminium Oxide (0 to 5 wt.%). The wetting agent Mg (2 wt.%) added in all castings to ensure better binding between ceramics and matrix. The SEM photomicrograph ensures homogenous dispersion of reinforcement particles by combined feeding method. The thermal properties of produced good quality composites are enhanced with increase in Aluminium Oxide (Al2O3) from 0 to 5 wt.%.

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Zhu, Yue Ting, and Jian Hua Mo. "Study on Electromagnetic Incremental Aluminium Alloy Tube Bulging with Casting Pipe." Key Engineering Materials 730 (February 2017): 321–26. http://dx.doi.org/10.4028/www.scientific.net/kem.730.321.

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A new method, electromagnetic incremental tube bulging with casting pipe, has been developed to manufacture corrosion resistant bi-metal pipeline as bulging aluminium alloy tube stuck to the internal surface of casting pipe. By formulating simulation parameters, electromagnetic model and structural model to do numerical simulation. The bulging tube is more homogeneous and closer to a long-straight tube when setting a casting pipe outside the aluminium pipe. Simulation results match well with the experiment. A solenoid coil discharges at different places inside the aluminium alloy tube with casting pipe a few millimetres outside the aluminium alloy tube. The aluminium alloy tube impacts on the internal surface of casting pipe instantaneously under the repulsive electromagnetic forces. The aluminium alloy tube can not be peeled off the casting pipe when tensile force reaches to 1kN. The result demonstrates that it is feasible to produce corrosion resistant bimetallic fluid pipe using electromagnetic incremental forming. The research can provide a certain reference for electromagnetic incremental aluminium alloy tube bulging.

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Wildhack, S., and Fritz Aldinger. "Freeze Casting of Aluminium Nitride." Advances in Science and Technology 45 (October 2006): 407–12. http://dx.doi.org/10.4028/www.scientific.net/ast.45.407.

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Aqueous freeze casting is an alternative wet shaping technique where water-based ceramic suspensions containing a cryoprotectant are cast in molds, frozen and dried. The method can be applied to various ceramic systems depending mainly on the ability to produce high solid loading in aqueous ceramic slurries. Against this background, aqueous aluminum nitride (AlN) suspensions were developed for the application in freeze casting. The results show that the applied process additives are most effective not only in chemically protecting AlN against hydrolysis but also in obtaining colloidally stable slurries with solid loadings in excess of 50 vol.-%. After optimization of the viscosity, the freeze cast green samples exhibit homogeneous microstructures without cracks and warpage. Besides, the systematic control of the freezing step and the solid loading allow the preparation of sintered samples with defined density.

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Canullo, María Victoria, Fernando Daroqui, Julio Ottaviani, Mauricio Martín, and Rodolfo Acuña Laje. "Launder System for Aluminium Casting." Materials Science Forum 630 (October 2009): 119–25. http://dx.doi.org/10.4028/www.scientific.net/msf.630.119.

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In 2000 Aluar installed its first in-house designed launder system for liquid metal transfer from the furnaces to their continuous casting machines. Since then, this type of launder system has been successfully installed in 9 casting lines, both batch and continuous, with flow rates ranging from 2 to 44 tonne/h, for conventional open mould casting, Wagstaff vertical DC billet casting , and Properzi rod casting. The Aluar system is designed to ensure an effective metal temperature control as well as a constant steady “under skin” metal flow, so avoiding turbulence and oxide generation. The highly adaptable system consists of a metal structure, which houses the pre-moulded high durability refractory launders of standardized shapes and dimensions required for the geometry of the desired lay-out: Y shaped, V-shaped, straight, elbowed launders, etc. In this way, the launders enable the connection of the furnaces to the casting machine optimizing the new or existing lay-out, and can be fully integrated to the degasser unit and the filter box without dross generation. The pre-moulded refractory pieces can be easily and quickly removed when their life time is over, thus reducing maintenance costs. Each module is insulated by a thick layer of material to reduce temperature loss (approx. 1°C per m in continuous casting). Another important feature of the system is the thermally insulated heated lids that can be commanded by a PLC to ensure excellent metal temperature control. Efficient launder level control systems ensure an effective achievement of consistent process control parameters. Control flow devices with laser commanded pins allow handling metal height differences up to a range of 200mm, without turbulence. This paper describes the main features of the launder design and presents some case studies in continuous and batch casting lines to show their performance in aluminium alloyed and unalloyed products. Maintenance performance indicators showing typical refractory life time are also included. INFA, an Engineering company of the Aluar group, with a vast experience in engineering works for the aluminium industry, was responsible for the installation and commissioning of these systems and is planning to market this product worldwide in the near future.

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Tharumarajah, A. "Benchmarking aluminium die casting operations." Resources, Conservation and Recycling 52, no. 10 (August 2008): 1185–89. http://dx.doi.org/10.1016/j.resconrec.2008.06.007.

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Duman, Ekrem, Mehmet Bayram Yildirim, and Ali Fuat Alkaya. "Scheduling continuous aluminium casting lines." International Journal of Production Research 46, no. 20 (October 15, 2008): 5701–18. http://dx.doi.org/10.1080/00207540701355212.

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Nuryanto, Afiata Donny, and Tiwan Tiwan. "Pengembangan Modul Pengecoran Logam Aluminium untuk Siswa Sekolah Menengah Kejuruan." JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN 2, no. 2 (October 1, 2017): 111. http://dx.doi.org/10.21831/dinamika.v2i2.15998.

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The purpose of this research is to develop aluminium casting module and to know the result of its feasibility test. In the development of this module using Research and Development method and feasibility test data obtained using questionnaire and documentation. The data obtained were analyzed using quantitative descriptive analysis in the form of scores (numbers) converted into percentages and categorized according to the scoring scale used. The aluminium casting module is produced by stages: requirements analysis, product creation, validation, product revision, product test, and product trial test analysis. The results of the feasibility test of aluminium casting module according to the material expert obtained a percentage of 76% included in the category very well. According to the media expert, aluminum casting module obtained 83% percentage included in the category very well. According to the teachers, the percentage of 87% and 88% are in the very good category, and the product test result or the student's response test to the aluminium casting module ern a percentage of 78% and 75% is included in the excellent category.Tujuan penelitian ini adalah mengembangkan modul pengecoran aluminium dan mengetahui hasil uji kelayakannya. Pada Pengembangan modul ini menggunakan metode Research and Development dan data uji kelayakan yang diperoleh menggunakan angket dan dokumentasi. Data yang diperoleh dianalisis menggunakan analisis deskriptif kuantitatif dalam bentuk skor persentase dan dikategorikan sesuai dengan skala penilaian yang digunakan. Modul pengecoran logam aluminium dihasilkan dengan tahap-tahap: analisis kebutuhan, pembuatan produk, validasi, revisi produk, uji coba produk , dan analisi hasil uji coba produk. Hasil uji kelayakan modul pengecoran logam aluminium menurut ahli materi memperoleh persentase sebesar 76% termasuk dalam kategori sangat baik. Menurut ahli media modul pengecoran aluminium memperoleh persentase 83% termasuk dalam kategori sangat baik. Menurut guru pengampu memperoleh persentase sebesar 87% dan 88 % termasuk dalam kategori sangat baik, dan hasil uji coba produk atau uji respon siswa terhadap modul pengecoran aluminium memperoleh persentase sebesar 78% dan 75 % termasuk dalam kategori sangat baik

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Samavedam, S., and S. Sundarrajan. "Al-Si and Al-Si-Mg Cast Alloys Shrinkage Porosity Estimation." Archives of Foundry Engineering 16, no. 1 (March 1, 2016): 61–68. http://dx.doi.org/10.1515/afe-2016-0004.

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Abstract US A356 and US 413 cast aluminium alloys shrinkage characteristic have been discussed in the present study. Specific volume reduction leads to shrinkage in castings and it can be envisaged as a casting defect. Finite difference based casting process simulation software has been used to study the shrinkage characteristic and it is quantified using mathematical formulae. The three dimensional model of the shrinkage defect has been constructed using CAD application software. Shrinkage characteristic has also been quantified through experimental validation studies and compared well with casting process simulation. Shrinkage characteristic study and control is essential for producing defect free castings. Influence of casting shape on the shrinkage characteristic has been studied in this paper.

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Kharisov, L. R., N. N. Safronov, and G. N. Safronov. "Strength of SHS Aluminium Cast Iron from Dispersed Mechanical Engineering Waste." Solid State Phenomena 284 (October 2018): 679–84. http://dx.doi.org/10.4028/www.scientific.net/ssp.284.679.

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The article presents an alternative method of obtaining aluminium cast iron in the process of self-propagating high-temperature synthesis from disperse waste of machine-building enterprises. The deficiencies of the traditional methods for obtaining structural iron castings with aluminum are established. The analysis of the factors influencing the strength of the SHS aluminium cast iron, the planned experiment for obtaining the maximum strength of SHS aluminium cast iron for two input factors varying at three levels and three parallel observations were carried out. The statistical processing of experimental results is performed. The mathematical model is obtained for the dependence of operational factors on the composition of the charge of the SHS process. The significance of the regression coefficients of the equation is determined. The adequacy of the obtained equation is checked for the results of observations. The analysis of the conditions for the formation of the microstructure of aluminium cast iron in the process of SHS-casting is presented.

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Nadolski, M., Z. Konopka, M. Łągiewka, and A. Zyska. "The Influence of the Method of Mould Filling on the Quality of Castings Made of EN AC-44000 or EN AC-46200 Alloy." Archives of Foundry Engineering 14, no. 4 (December 1, 2014): 73–76. http://dx.doi.org/10.2478/afe-2014-0089.

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Abstract The performed examinations concerning the process of filling the plaster ceramic moulds with aluminium alloys allowed to assess the influence of various methods of introducing the metal into the mould cavity on the macro- and microstructure of the obtained experimental castings. The comparison was performed for castings with graded wall thickness made either of EN AC-44000 alloy or of EN AC-46000 alloy, produced either by gravity casting, or by gravity casting with negative pressure generated around the mould (according to the Vacumetal technology), or by counter-gravity casting. It was found that the silicon crystals grow in size with an increase in wall thickness due to the slower cooling and solidification of castings

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Zhu, Sheng, Guo Feng Han, Xiao Ming Wang, Yu Xiang Liu, and Zhi Qian Wang. "Electrochemical Characteristics of TiAl Coating on Aluminum Alloy Surface by Supersonic Particles Deposition." Advanced Materials Research 1051 (October 2014): 199–203. http://dx.doi.org/10.4028/www.scientific.net/amr.1051.199.

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In this study, Ti-45Al-7Nb-4V alloy protective coating which base on γ-TiAl phase was deposited on the surface of 5803 aluminum alloy by supersonic particles deposition technology. Researchers observed the micro-structure of the TiAl alloy casting and coating by SEM, and researched the electrochemical characteristics and the galvanic corrosion between TA2 titanium alloy and 5083 aluminum alloy or TiAl alloy casting and coating by electrochemical work station. The results show that,the galvanic corrosion current between 5083 aluminium alloy and TA2 titanium alloy declines from 16.2μA to 0.27μA after TiAl protecting coatings are prepared on the substrates, besides, the corrosion susceptibility drops from E degree to A degree. It also manifests that the 5083 aluminium alloy with Ti-45Al-7Nb-4V coatings can be contacted and utilized with TA2 titanium alloy directly, which tackles the issues of gavanic corrosion prevention between aluminium alloys and titanium alloys.

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Fan, Yang Yang, and Makhlouf M. Makhlouf. "Castable Aluminium Alloys for High Temperature Applications." Materials Science Forum 765 (July 2013): 8–12. http://dx.doi.org/10.4028/www.scientific.net/msf.765.8.

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Most traditional aluminium casting alloys are based on the aluminium-silicon eutectic system because of its excellent casting characteristics. However, the solidus in this system does not exceed 577 °C and the major alloying elements used with silicon in these alloys have high diffusivity in aluminium. Therefore, while these elements enhance the room temperature strength of the alloy, they are not useful at elevated temperatures. Considering nickel-base superalloys, whose mechanical properties are retained up to temperatures that approach 75% of their melting point, it is conceivable that castable aluminium alloys can be developed on the same basis so that they are useful at temperatures approaching 300 °C. In this publication, we present the thought process behind developing a new castable aluminum alloy that is designed specifically for such high temperature applications and we present the alloy’s measured castability characteristics and its elevated temperature tensile properties.

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du Toit, Madeleine, Patronica Letsoalo, and Heinrich Möller. "Fusion Welding of Rheocast Semi-Solid Metal (SSM) Processed Aluminium Alloy 7017." Solid State Phenomena 192-193 (October 2012): 161–66. http://dx.doi.org/10.4028/www.scientific.net/ssp.192-193.161.

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Near-net shape casting of wrought aluminium alloys has proven to be difficult due to a tendency towards hot tearing during cooling. Rheocasting, or semi-solid metal (SSM) processing followed by high pressure die casting (HPDC), has recently been shown to be an effective alternative to conventional die casting, yielding near-net shape wrought aluminium alloy castings with less risk of hot tearing. This casting process involves pouring the liquid metal into a processing cup, which is then transferred into a coil for induction stirring and simultaneous forced air cooling. When the metal reaches the semi-solid casting temperature, the resultant slurry is transferred to a high pressure die casting machine and cast to near-net shape. This modifies the as-cast microstructure, yielding a more globular primary phase and results in mechanical properties in the -T6 condition closely approaching those of wrought material in the same condition. Little information is currently available on the response of SSM-HPDC material to welding. This project investigated the influence of autogenous laser and gas tungsten arc welding on the microstructure and mechanical properties of aluminium 7017 after rheocasting. It is possible to successfully weld this material without solidification or liquation cracking. The effect of welding on the rheocast microstructure in the heat-affected zone and weld metal was shown, and the hardness and tensile properties of the resulting joints in the as-welded condition were tested and related to the microstructures achieved.

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Dawood, Nawal Mohammed. "Erosion-Corrosion Behavior of Al-20%Ni-Al₂O₃ Metal Matrix Composites by Stir Casting." Materials Science Forum 1002 (July 2020): 161–74. http://dx.doi.org/10.4028/www.scientific.net/msf.1002.161.

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Aluminium as matrix in particulars have been vastlys investigateds, this is becauses of the diverses applicationss of aluminium dues to its exceptional propertiess. Material scientistss alwayss face a challenges when it comess to the tribologicals and mechanicals propertiess of aluminium, as it exudess rather poors behaviours in these aspectss. Hences this works aims to improves the mechanicals and corrosives resistances of Aluminiums by reinforcings with aluminum oxides and Nickel throughs stir casting usings vortex techniques. Al-Ni-Al2O3 composites with percentages of Ni fixed at 20 % and Al2O3 differed through 4-8% in incrementss of 2 wt. % . Composites material was prepareds by stir castings using vortex techniques. The hardness value of the aluminiums matrix composites improved with increaseds percentages of Al2O3, maximums increase was obtaineds for 8% Al2O3 composite, viewing an increases of about 55%. A generals corrosions and erosion-corrosions for the Al-20%Ni bases alloys and the prepareds composites were carrieds out in 3.5wt% NaCl solutions as corrosives mediums for general corrosions while in erosion-corrosions with impacts angles 90° in slurry solutions ( 1wt%SiO2 sand in 3.5wt% NaCl solution as the erodent). It was founds that the general corrosions rates for composite specimens is lower than thats of the bases alloy (Al-20%Ni). In case of erosion-corrosion resultss, it was founds that the erosion corrosions resistances property of the prepareds composites improveds significantlys with the increaseds percentages of Al2O3. There wass a noticeable improvements in the corrosion resistances of the aluminiums composites compareds to its purest forms, owing to the presences of nickel. Howevers, the increases in Al2O3 percentages decrease the corrosions rates. The extreme decreases was obtaineds for 8% Al2O3 composites, with a decreases of 26% corrosion rates in (mpy) unit for composites material is lowers than that of the bases alloys.

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Li, Ji Qiang, Zhong Zhao, Zi Tian Fan, Zhi Xin Jia, Wen Liu, and Li Jun Liu. "Determination of Optimal Temperature for Defect-Free Casting of Aluminium in the LP-LFC Process." Applied Mechanics and Materials 101-102 (September 2011): 934–37. http://dx.doi.org/10.4028/www.scientific.net/amm.101-102.934.

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Fluidity of ZL101 aluminium alloys in the low-pressure lost foam casting (LP-LFC) process has been investigated by altering various temperature variables. The experimental results indicate that the LP-LFC process had fine fluidity, and the pouring temperature was lower than conventional lost foam casting. The effect of the metal temperature on the fluidity is marginal in the LP-LFC process. Excessive pouring temperature not only aggrandizes energy consumption but also deteriorates porosity defect. The success of casting cooling fin demonstrates the advantages of LP-EPC process in producing high-complicated castings.

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Chen, Song, Da Quan Li, Fan Zhang, You Feng He, Qiang Zhu, Yi Li, and Hai Xia Cui. "Development of Semi-Solid Die Casting Process Technology for Aluminium Alloy Clamp." Materials Science Forum 850 (March 2016): 642–48. http://dx.doi.org/10.4028/www.scientific.net/msf.850.642.

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Compared with traditional liquid and solid processing methods, semi-solid die casting process can apparently overcome shrinkage cavity and porosity defects in castings and high deformation resistance and high residual stress shortcomings in forging parts. Semi-solid die casting process with advantages such as high efficiency and low cost, will become the optimal process for high quality automobile parts. In this study, using the clamp as an example, the author introduced product structure optimization and die design for semi-solid die-casting process of aluminum alloy in a new product development.The Computer Aided Engineering technology was applied to the product structure optimization according to the stress analysis. The optimal mold structure, including cavity layout, gating system, overflow and vent systems, were confirmed based on the die design criteria for traditional die casting, combining with the characteristics of semi-solid forming and the simulation results. The semi-solid aluminum alloy clamp parts with excellent performances were finally developed successfully by means of product structure optimization, die design, parameters optimization of die casting process, and the mechanical properties test of products.The existing parts were optimized to make them more suitable for semi-solid die casting processing. In addition, a reasonable die design specially for semi solid processing was an important guarantee for a successful semi solid product applied in industry. Computer numerical simulation was applied in product structure design for semi-solid die casting, die design, die-casting process optimization and other aspects, to shorten the development cycle of new product, reduce cost and improve efficiency.

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Daswa, Pfarelo, Heinrich Moller, and Gonasagren Govender. "Overageing Characteristics of Alloy A356 and Al-Mg-Si Casting Alloys." Solid State Phenomena 285 (January 2019): 75–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.75.

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Al-Si-Mg casting alloys, such as Al-7Si-0.3Mg alloy A356, are heat treatable and can be precipitation hardened to the T6 temper condition. However, Al-Mg-Si casting alloys (5xx series) are generally not considered to be heat treatable. These 5xx series castings are known for good castability and good resistance to corrosion, especially in marine environments. This paper investigates the extent to which 5xx series alloys could possibly be artificially aged. The influences of artificial ageing time on the overageing characteristics of both Al-Mg-Si and A356 casting alloys have been studied. A356 aluminium alloy castings were produced using the CSIR rheo-high pressure die casting process (R-HPDC). Al-Mg-Si alloys were cast using permanent mould casting. The rate of overageing of these alloys is of importance for potential higher temperature applications. The overageing characteristics of Al-Mg-Si and A356 aluminium alloys have been investigated at an artificial ageing temperature of 190°C for ageing times up to 128 hours. It is shown that the rate of overageing of Al-Mg-Si casting alloys is lower than for alloy A356. This could possibly result in the use of these alloys in applications at temperatures that are higher than where alloy A356 can be employed. It also allows the possibility of using the 5xx series alloys as an alternative to other Al-alloys for R-HPDC applications.

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JAMROONRAT, S., and S. PITAKTHAPANAPHONG. "CAS-10: Optimisation of Runner System to Minimise Defects in Aluminium Casting Process(CAS-II: ADVANCED CASTING)." Proceedings of the JSME Materials and Processing Conference (M&P) 2005 (2005): 7. http://dx.doi.org/10.1299/jsmeintmp.2005.7_2.

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Rübner, M., M. Günzl, C. Körner, and R. F. Singer. "Aluminium–aluminium compound fabrication by high pressure die casting." Materials Science and Engineering: A 528, no. 22-23 (August 2011): 7024–29. http://dx.doi.org/10.1016/j.msea.2011.05.076.

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SHIM, HEE-JIN, and JUNG-KYU KIM. "EFFECT OF POROSITY ON THE FATIGUE LIFE OF CAST AC4C-T6 ALLOY FOR LCD GLASS TRANSFER ROBOT." International Journal of Modern Physics B 24, no. 15n16 (June 30, 2010): 2273–78. http://dx.doi.org/10.1142/s0217979210064782.

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Aluminium has good corrosion properties and a high strength to weight reduction which makes it favourable in many applications. The increased use of aluminium casting in the automotive industry does also imply that the need for design data for aluminium increases. Especially for castings, the influences of casting defects are always an issue. For this reason fatigue properties for as-cast sand and permanent mould specimens with different contents of porosity have been studied. The cast aluminium specimens of two different porosities were fatigue tested in cyclic axial test at R =-1. Prior to fatigue test specimens were examined by CT-scan and sorted into two quality groups depending on the porosity level. The aim of this work was to investigate the fatigue life for cast AC4C-T6 alloy with different amounts of inherent porosity. An additional aim was to predict the durability for cast components with defect constrained in a specified volume of components, by using a commercial program MSC. Fatigue.

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Amuda, M. O. H., A. M. Oladoye, J. Agunsoye, O. Farombi, and W. Subair. "On the Dependence of Microstructure-Sensitive Properties of Cast 2xxx Series Aluminium Alloy on Solidification Parameters." Advanced Materials Research 264-265 (June 2011): 317–22. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.317.

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The effect of casting temperature, cooling rate in silica bound molding sand and modifier additions on tensile, ductility and hardness properties Al-Cu binary alloy is presented. The study revealed that casting at high cooling rate and low casting temperatures with sufficient addition of ferro-silicon not exceeding the limited concentration for solubility improve mechanical properties of castings. The study also indicated that casting temperature greater than 7000C expanded the liquidussolidus solidification line leading to multiple phase formation which in-turn affect the final microstructure. Casting temperature of 7000C, addition of modifier in amount up to 200g and rapid cooling rate optimized the mechanical properties. The microstructure in this condition consists of equiaxed grains with spot presence of CuAl2 intermetallics which probably is responsible for the increased tensile strength and marginal change in ductility.

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Ichikawa, Junichi, Tatsuro Hayashida, and Shinsuke Suzuki. "Compressive Properties of Porous Aluminum Alloy Fabricated by Joining Pipes and Melt through Continuous Casting." Materials Science Forum 761 (July 2013): 151–55. http://dx.doi.org/10.4028/www.scientific.net/msf.761.151.

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A porous aluminum alloy was fabricated by joining pure aluminum pipes and Al-13mass% Si melt through continuous casting. Compressive tests were carried out with test specimens of the porous aluminum alloy fabricated by this method, non-porous aluminum alloy fabricated by continuous casting using Al-Si melt, and porous aluminum alloy consisting of only Al-Si fabricated by drilling non-porous Al-Si bar. From the compressive tests, it was confirmed that specific proof strength of the porous aluminum alloy fabricated by joining pipes and melt can be described by rule of mixture of Al-Si base metal, pure aluminium pipes and pores.

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Tiryakioğlu, M., and J. Campbell. "Guidelines for designing metal casting research: application to aluminium alloy castings." International Journal of Cast Metals Research 20, no. 1 (January 2007): 25–29. http://dx.doi.org/10.1179/136404607x186509.

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Konieczny, Jarosław, Krzysztof Labisz, and Anna Janina Dolata. "Structure and Functional Properties of Surface Layer Produced on Cast Aluminium Light Alloys by Appliance of Anodisation." Solid State Phenomena 229 (April 2015): 51–56. http://dx.doi.org/10.4028/www.scientific.net/ssp.229.51.

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The aim of the work is presents the influence of casting method and anodic treatment parameters on properties, thickness and structure of an anodic layer formed on aluminium casting alloys. Investigations were carried out on the laser profile measurement gauge MicroProf from company FRT, abrasive wear test was made with using ABR-8251 equipment delivered by TCD Teknologi ApS and microstructure investigations were made with using a light microscope equipped with an electronic camera configured with a computer on two casting aluminium alloys which both were founding by pressure die casting and gravity casting. The researches included analyse of the influence of chemical composition, geometry, roughness and abrasive wear resistant of anodic layer obtained on aluminium casts.Research limitations/implications Contributes to research on anodic layer for aluminium casting alloys. Practical implications Conducted investigations lay out the areas of later researches, especially in the direction of the possible, next optimization anodisation process of aluminium casting alloys, e.g. in the range of raising resistance on corrosion. Originality of this research was to describe the range of possible applications increases for example as materials on working building constructions, elements in electronics and construction parts in air and motorization industry in the aggressive environment.

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Znamenskij, Leonid G., O. V. Ivochkina, and Aleksey S. Varlamov. "Economical Ceramic Molds in Investment Casting." Materials Science Forum 843 (February 2016): 208–12. http://dx.doi.org/10.4028/www.scientific.net/msf.843.208.

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Ceramic corundum molds on hydrolysed ethyl silicate solution which have insufficient inertness to poured alloys are widely used in the production of castings from reactive metals alloys. This is due to the presence of free silica, which is a strong oxidant of such alloy components as aluminium and titanium in vacuum conditions, in the form of a high content. To solve the indicated problem using aluminium-borophosphate concentrate, chemically cured with periclase, as a silica free binder of ceramic corundum molds was suggested. The use of the combination of the indicated mold materials allows not only enabling chemical inertness of the molds, but also operating the process of mold forming. The developed technology provides the acceleration of the mold manufacturing cycle in 4...6 times, the increase the strength of the mold covers, the reduction in the heat-resistant alloy casting cost. It enables significant improvement of the quality and increase of the economic efficiency of manufacturing of precision casting from reactive metals and alloys.

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Suraya, S., Shamsuddin Sulaiman, Mohd Khairol A. Arifin, and Mohd Sayuti. "Computer Simulation and Experimental Investigation of Solidification Casting Process." Key Engineering Materials 471-472 (February 2011): 601–5. http://dx.doi.org/10.4028/www.scientific.net/kem.471-472.601.

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Computer simulation is widely used and conventional in manufacturing as a way to improve the manufactured goods quality as at same time plummeting invention costs, development time and scrap. In this study, three-dimensional model have been developed to simulate the filling and the solidification pattern in an aluminum casting with “AnyCasting” software. Using this software, solidification of aluminium 11.8% Si alloy in sand and metal mould was simulated and the results were compared with the experimental results. The solidification time and temperature was experimentally determined from thermocouple located at diverse distances. A data logger is used in experiment to gain the temperature division contour during the process of solidification of the aluminium 11.8% Si alloy. Experiments were set up to legalize the simulation results and it is confirm that the results from the two mould methods be in good agreement and the solidification of cast aluminium alloy using copper mould was much faster compared to the one cast sand mould. From this work it is concluded that simulation using AnyCasting software can be use to initially calculate. The simulation shows result that matches with the experimental data qualitatively and therefore the validation procedure is successful.

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Journal articles on the topic 'Aluminium die casting'

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