Thematische Bibliographien / Thin-walled ductile iron castings

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Auswahl der wissenschaftlichen Literatur zum Thema „Thin-walled ductile iron castings“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 18. Februar 2022

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Zeitschriftenartikel zum Thema "Thin-walled ductile iron castings"

Skrbek, B., und K. Policar. „Structure Distribution in Precise Cast Iron Moulded on Meltable Model“. Archives of Foundry Engineering 15, Nr. 4 (01.12.2015): 69–74. http://dx.doi.org/10.1515/afe-2015-0082.

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Abstract Topic of this work is to compare metalurgy of cast irons poured into sand moulds and into shell molds at IEG Jihlava company and from it following differencies in structures of thin- and thick-walled castings. This work is dealing with investigation and experimental measurement on surfaces and sections suitable thin- and thick-walled investment castings at IEG Jihlava. Cast irons with flake graphite (grey cast iron) and cast irons with spheroidal graphite (ductile cast iron). Both mechanical and physical properties are determined using calculations from as measured values of wall thicknesses L and Lu, Vickers hardness and remanent magnetism. Measurement results are discussed, findings are formulated and methods for castings metallurgical quality improvement are recommended finally.

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Pedersen, K. M., und N. S. Tiedje. „Undercooling and nodule count in thin walled ductile iron castings“. International Journal of Cast Metals Research 20, Nr. 3 (Juni 2007): 145–50. http://dx.doi.org/10.1179/136404607x239816.

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Fraś, E., M. Górny und W. Kapturkiewicz. „Thin Wall Ductile Iron Castings: Technological Aspects“. Archives of Foundry Engineering 13, Nr. 1 (01.03.2013): 23–28. http://dx.doi.org/10.2478/afe-2013-0005.

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Abstract The paper discusses the reasons for the current trend of substituting ductile iron castings by aluminum alloys castings. However, it has been shown that ductile iron is superior to aluminum alloys in many applications. In particular it has been demonstrated that is possible to produce thin wall wheel rim made of ductile iron without the development of chills, cold laps or misruns. In addition it has been shown that thin wall wheel rim made of ductile iron can have the same weight, and better mechanical properties, than their substitutes made of aluminum alloys.

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Górny, Marcin, Magdalena Kawalec, Gabriela Sikora, Ewa Olejnik und Hugo Lopez. „Primary Structure and Graphite Nodules in Thin-Walled High-Nickel Ductile Iron Castings“. Metals 8, Nr. 8 (17.08.2018): 649. http://dx.doi.org/10.3390/met8080649.

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This paper considers the most important quality factors in processing spheroidal graphite cast iron; namely, primary grains and graphite nodules in thin-walled ductile iron castings (TWDI). In the present study, the effect of grain refinement (by means of Ti, Nb and Zr) and of the holding time after spheroidization and inoculation on effecting the primary grains and eutectic structure in TWDI castings was investigated. Moreover, metallographic examinations (including electron backscattering diffraction, EBSD) were carried out to reveal the macro- and micro-structural features during the primary and eutectic solidification of the cast iron. EBSD results indicate that, within a single dendritic grain, there are numerous boundaries that split the grain into numerous smaller areas. In particular, it is found that the graphite nodules are in contact with the boundaries inside the primary dendritic grain. In turn, crystallization of highly branched dendrites is observed, which seems to “push” the graphite nodules into the interdendritic regions during their growth. The present work investigates the dominant mechanism that gives rise to the primary spheroidal graphite cast iron (SGI) structure. In addition, this work shows that the melt quality is closely associated with the resultant morphology and number of austenite dendrites, graphite nodules, and matrix structure.

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Pedersen, K. M., und N. S. Tiedje. „Experimental validation of error in temperature measurements in thin walled ductile iron castings“. International Journal of Cast Metals Research 20, Nr. 2 (April 2007): 84–89. http://dx.doi.org/10.1179/136404607x226838.

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Fraś, E., M. Górny und H. Lopez. „Thin Wall Ductile Iron Castings as Substitutes for Aluminium Alloy Castings“. Archives of Metallurgy and Materials 59, Nr. 2 (01.06.2014): 459–65. http://dx.doi.org/10.2478/amm-2014-0076.

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Abstract The paper discusses the reasons behind current trends for substituting cast iron castings by aluminum alloys. In particular it is shown that it is possible to produce thin wall castings (control arms, cantilevers and rotors) made of ductile iron without the development of chills, cold laps or misruns, and with a strength to weight ratio of up 87 MPa cm3/g. In addition, austenitizing at 900 °C for 20 minutes and then austempering in a salt bath at 350 °C for 15 minutes promotes the development of a fully ausferritic matrix in thin wall castings with a the strength to weight ratio increase of up to 154 MPa cm3/g. Finally, it is shown that thin wall castings made of ductile or austemperded cast iron can be lighter and with superior mechanical properties then their substitutes made of aluminum alloy.

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Kapturkiewicz, Wojciech, Andriy Burbelko und Marcin Górny. „Undercooling, Cooling Curves and Nodule Count for Near-eutectic Thin-walled Ductile Iron Castings“. ISIJ International 54, Nr. 2 (2014): 288–93. http://dx.doi.org/10.2355/isijinternational.54.288.

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Elbanna, Noha, Adel Nofal, Abdelhamid Hussein und Mahmoud Tash. „Mechanical Properties of Thin Wall Ductile Iron: Experimental Correlation Using ANOVA and DOE“. Key Engineering Materials 835 (März 2020): 171–77. http://dx.doi.org/10.4028/www.scientific.net/kem.835.171.

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The present study was undertaken to investigate the effect of different metallurgical parameters such as casting techniques, wall thickness, inoculant technique, carbon equivalent, nodule count, ferrite and pearlite percent on the mechanical properties of thin wall ductile iron castings (TWDI). Understanding of the effect of chemistry, casting techniques, melting and molten treatment on the mechanical properties and microstructural features of TWDI castings would help in selecting conditions required to achieve optimum mechanical properties and alloy high strength to weight ratio. The use of the design of experiment (DOE) and the analysis of variance (ANOVA) can be a useful methodology to reach this objective. The analysis of the effects of each variable and their interaction on the mechanical properties of TWDI castings using green sand, green sand with insulation and investment casting techniques plays a key role in improved materials performance.The results indicate that nodule count, pearlite content and the interaction between carbon equivalent, nodule count and pearlite content have a significant effect on the tensile strength of TWDI castings. The impact toughness values decrease with smaller section thickness and increased nodule count. Using investment casting technique, decreasing the pearlite percent and nodule count, and increasing the wall thickness and ferrite percent reduce the values of ultimate tensile strength and yield strength. The results of percent elongation and impact toughness show a reverse trend compared with those of ultimate tensile strength and yield strength in terms with different metallurgical parameters.

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Sheikh, M. Ashraf. „Production of carbide-free thin ductile iron castings“. Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material 15, Nr. 5 (Oktober 2008): 552–55. http://dx.doi.org/10.1016/s1005-8850(08)60103-6.

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Benedetti, Matteo, Vigilio Fontanari und Danilo Lusuardi. „Fatigue and fracture resistance of ferritic ductile cast iron: the effect of Sb and solidification time“. MATEC Web of Conferences 165 (2018): 13011. http://dx.doi.org/10.1051/matecconf/201816513011.

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In this paper, we explore the effect of inoculants and solidification time on the mechanical properties of an EN-GJS-400-type ferritic ductile cast iron (DCI). For this purpose, static tensile, rotating bending fatigue, fatigue crack growth and fracture toughness tests are carried out on three different material conditions. They are produced under fast cooling (solidification time 2h45min), representative of thin walled castings, and very slow cooling (solidification time 10—13h), representative of thick walled castings, this latter with and without the addition of Sb. It has been found that the long solidification time leads to an overgrowth and degeneration of the spheroidal graphite nodules. The addition of Sb avoids the formation of chunky graphite observed in the slowly cooled condition but results in large exploded graphite nodules. These effects impact negatively on tensile strength, total elongation and fatigue strength. Conversely, the resistance to fatigue crack growth is even superior and the fracture toughness comparable to that of the fast cooled condition. Metallurgical and fractographic analyses are carried out to explain this behaviour.

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Dissertationen zum Thema "Thin-walled ductile iron castings"

Kryštůfek, Tomáš. „Odlévání tenkostěnných litinových odlitků“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-445175.

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This diploma thesis is focused on production and problems in production of thin-walled ductile iron castings, especially in the inoculation process. The focus is on the influence of elements on the structure and mechanical properties of ductile iron and as well as the influence of some elements, that are commonly used in inoculation alloys. Furthermore, the factors that affect the production technology are written, i.e., solidification rate, wall thickness, cooling rate, and factors used for affecting the thin-walled castings production, i.e., the use of insulating moulding compounds and increasing the graphite nodule count. At the end of the theoretical part, important production processes are analysed, namely inoculation and spheroidization. The experimental part is focused on influencing the structure and mechanical properties using several types of inoculants of different chemical compositions, whereas the tested thicknesses of the test plates are 3-, 5- and 8-mm. Hardness, tensile strength and ductility are evaluated on these plates. Finally, the volume of ferrite in the structure, shape and size of the graphite nodules were examined.

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Lee, Cheng-Yi, und 李震沂. „Effects of Casting Thickness on Nodularity of Thin-walled Ductile Iron“. Thesis, 2009. http://ndltd.ncl.edu.tw/handle/su6n8q.

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碩士
國立臺北科技大學
材料科學與工程研究所
97
In this thesis, the microstructure will be studied what the different composition and casting thickness influence on. The base iron uses 100% recycle ductile iron to erase the effect of harmful elements which have micro content. Collect several kinds of commercial nodularitier and inoculants. Utilizing sandwich treatment method and inoculating before pouring. Follow the standard method to prepare the spectrometer, tensile test and microstructure specimen. Measure and study the chemical composition, tensile properties, Brinell hardness and microstructure [nodularity, nodule count, ferrite matrix content etc]. At least residual Mg have to be more than 0.02 % which the nodularity can be achieved 80% at 3 mm casting thickness in high silicon content ductile iron. Which means at high Si content thin-walled ductile iron can use less nodularitier in well Mg treatment. If we use the inoculants Bi alloy included, the nodule count can be achieved to 635 ea/mm2 at 4 mm thickness on thin-walled ductile iron; better than 437 ea/mm2 at 3 mm thickness. The results tell us the inoculants treatment is the most important factor to affect high nodule count than fast solidification rate (casting thickness). We can’t get higher nodule count when the solidification rate is too fast. But casting thickness is the most important factor to affect the matrix ferrite content when the thickness less than 6 mm. At the thickness exceed than 6 mm, the slow solidification rate will affect less nodule count which affect the less ferrite. This reason causes the matrix ferrite content will not raising continuous according thick casting. As ASTM A536 Ductile Iron grade, drawing the tensile strength and elongation relation, if we want to get the good quality ductile iron, the minimum nodularity is not less than 70%. We can get this result in this experiment.

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Laskowski, Nils. „Entwicklung eines Verfahrens zur experimentellen Simulation extrem langer Abkühl- und Erstarrungszeiten von EN-GJS“. 2019. https://tubaf.qucosa.de/id/qucosa%3A37685.

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Bei der Herstellung von dickwandigem GJS treten zahlreiche ungeklärte Effekte durch die sehr langsamen Abkühlungs- und Erstarrungsgeschwindigkeiten auf. Bisherige Untersuchungsmethoden ermöglichen keine definierte Temperaturführung analog zum realen Bauteil und benötigen trotzdem große Schmelzemengen und einen hohen Trennaufwand für die Probenherstellung. Das Ziel der Arbeit bestand in der Entwicklung einer Versuchsmethode zur experimentellen Simulation extrem langer Abkühl- und Erstarrungszeiten von GJS. Die Verwendung einer geeigneten Abdeckung der Schmelze zur Minimierung des Mg-Abbrandes und eines druckfesten Kaltwandofens inkl. dynamischer Temperatursteuerung ermöglichte reproduzierbare Versuche zur Einstellung verschiedener Gefügezustände durch Variation der Abkühlregime und des Impfzustandes. Es gelang, Chunkygrafit und Grafitflotation gezielt herzustellen und dadurch die Entstehungsmechanismen wissenschaftlich zu untersuchen. Ein Chunkygrafit-Index-Diagramm konnte erarbeitet werden.

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Chang, Yu-Wu, und 張豫武. „Study on Molding Conditions and Metallographic Microstructure of Super Thin Section Ductile Iron Casting“. Thesis, 2015. http://ndltd.ncl.edu.tw/handle/34248711017285700399.

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碩士
逢甲大學
機械與電腦輔助工程學系
103
The purpose of this study is to investigate the effect of pressurized(the maximum instantaneous pressure is 0.2kg/cm2) on the green sand mold when pouring for molding conditions(fillability degree, surface defects) and metallographic microstructure of the different thickness specimens(1.0mm、1.2mm、1.4mm、1.6mm、1.8mm、2.0mm、2.5mm、2.8mm). The result of experiment show that when in the condition of pressurized for super thin section ductile iron specimens have significantly improved in fillability. For example about the thin specimens 1.0mm, the degree of fillability improvement is from 32.29% to 84.09%, rised 51.80%. And the degree of improvement about 1.2mm specimens is from 65.09% to 99.36%, rised 34.27%. When in the conditions of pressurized and unpressurized system for super thin section ductile iron specimens. (1) Have no significant difference in metallographic microstructure for specimens thickness from 1.0mm to 2.8mm. (2) The distribution ratio for graphite、pearlite、cementite and ferrite have no obviously difference. (3) When the casting specimens with increasing thickness, along with reducing about transformed ledeburite and pearlite (white cast iron). (4) The mass effects for the different thickness specimens are also not evident.(5) In as-cast condition with no white cast iron microstructure, the super thin section ductile iron specimens can completely filling thickness is in 2.5mm.

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Buchteile zum Thema "Thin-walled ductile iron castings"

Gurgul, Daniel, Andriy Burbelko, Marcin Górny und Wojciech Kapturkiewicz. „Thin Wall Ductile Iron Castings Modeling by Cellular Automaton“. In EPD Congress 2013, 47–54. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118658468.ch6.

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Kapturkiewicz, Wojciech, und Andriy Burbelko. „Undercooling, Cooling Curves and Nodule Count for Hypo-, Hyper- and Eutectic Thin-Walled Ductile Iron Castings“. In Advances in the Science and Engineering of Casting Solidification, 313–21. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093367.ch37.

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Kapturkiewicz, Wojciech, und Andriy Burbelko. „Undercooling, Cooling Curves and Nodule Count for Hypo-, Hyper- and Eutectic Thin-Walled Ductile Iron Castings“. In Advances in the Science and Engineering of Casting Solidification, 313–21. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-48117-3_37.

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Górny, Marcin, Janusz Lelito und Magdalena Kawalec. „Thermophysical Properties of Thin Walled Compacted Graphite Iron Castings“. In Advances in the Science and Engineering of Casting Solidification, 331–38. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-48117-3_39.

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Górny, Marcin, Janusz Lelito und Magdalena Kawalec. „Thermophysical Properties of Thin Walled Compacted Graphite Iron Castings“. In Advances in the Science and Engineering of Casting Solidification, 331–38. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093367.ch39.

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Sulamet-Ariobimo, Rianti Dewi, Johny Wahyuadi Soedarsono und Tresna Priyana Soemardi. „Thin Wall Ductile Iron Castings“. In Advanced Casting Technologies. InTech, 2018. http://dx.doi.org/10.5772/intechopen.72117.

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„Thin-Wall Ductile Iron Castings“. In Cast Iron Science and Technology, 617–28. ASM International, 2017. http://dx.doi.org/10.31399/asm.hb.v01a.a0006327.

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Shihe, Wei, Xiong Kuoqing, Sun Yaoqing, Mei Tiehan, Cong Zicai und Tian Yongxin. „THE FEATURE OF RCA INOCULANT AND ITS APPLICATION TO PRODUCE THIN-WALLED AS-CAST FERRITIC NODULAR IRON CASTINGS“. In New Frontiers in Rare Earth Science and Applications, 1375–78. Elsevier, 1985. http://dx.doi.org/10.1016/b978-0-12-767662-3.50124-8.

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Konferenzberichte zum Thema "Thin-walled ductile iron castings"

Schrems, K. K., J. A. Hawk, Ö. N. Doǧan und A. P. Druschitz. „Statistical Analysis of the Mechanical Properties of Thin Walled Ductile Iron Castings“. In SAE 2003 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2003. http://dx.doi.org/10.4271/2003-01-0828.

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DeBruin, Mark E., und S. E. Jordan. „Weight Reduction Using Massive Carbide Free Thin Walled Ductile Iron Produced via Lost Foam Casting“. In SAE 2011 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2011. http://dx.doi.org/10.4271/2011-01-0426.

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Berichte der Organisationen zum Thema "Thin-walled ductile iron castings"

Charles Bates, Hanjun Li und Robin Griffin. Machinable, Thin-Walled, Gray and Ductile Iron Casting Production, Phase III. Office of Scientific and Technical Information (OSTI), Dezember 2003. http://dx.doi.org/10.2172/820535.

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Bates, C. E., H. E. Littleton, E. Eleftheriou, R. D. Griffin, Z. B. Dwyer, C. DelSorbo und J. Sprague. Machinability of clean thin-wall gray and ductile iron castings. Final report. Office of Scientific and Technical Information (OSTI), Februar 1997. http://dx.doi.org/10.2172/514913.

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