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Articoli di riviste sul tema "Continuous casting"

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Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 8 giugno 2024

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1

Odilov, Furkat, e Farrukhjon Abdullaev. "Improving The Technology Of Continuous Casting Of Steel Castings". American Journal of Engineering And Techonology 03, n. 04 (30 aprile 2021): 108–17. http://dx.doi.org/10.37547/tajet/volume03issue04-17.

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This article describes the quality and cost-effectiveness of converting steels by melting them in electric arc furnaces. In addition, the technology of continuous casting of cast products in the furnace with the help of ferroalloys, followed by various equipment.

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2

Marukovich, E. I., V. A. Kharkov, I. O. Sazonenko, V. A. Kukareko e A. V. Kushnerov. "Structure, physical and mechanical properties of bronze castings obtained by continuous and centrifugal casting". Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), n. 2 (9 giugno 2020): 26–28. http://dx.doi.org/10.21122/1683-6065-2020-2-26-28.

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The influence of crystallization conditions (continuous and centrifugal casting) of small-sized BrА1Fe4Ni4 bronze castings on the structure, phase composition, and hardness was studied. It was found by metallographic and X-ray diffraction methods that the castings consist of (α + γ')-eutectoid, α phase and AlCu, Al2Cu3 intermetallic compounds. The matrix phase in the alloy, crystallized by centrifugal casting, due to its higher alloying with Al atoms, has an increased value of the crystal lattice parameter, compared with the case of continuous casting. The hardness of the casting obtained by centrifugal casting increases compared with continuous casting, which is due to the formation of a more dispersed structure, as well as a large solid solution hardening of the matrix phase of the casting.

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3

Vynnycky, Michael. "Continuous Casting". Metals 9, n. 6 (3 giugno 2019): 643. http://dx.doi.org/10.3390/met9060643.

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Continuous casting is a process whereby molten metal is solidified into a semi-finished billet, bloom, or slab for subsequent rolling in finishing mills; it is the most frequently used process to cast not only steel, but also aluminum and copper alloys [...]

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4

Minh Duc, Do, e Nguyen Hong Hai. "Study on Rheo-Continuous Casting of Al-Si A356 (EN AC4200) Alloys". Key Engineering Materials 682 (febbraio 2016): 220–25. http://dx.doi.org/10.4028/www.scientific.net/kem.682.220.

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Rheo-continuous casting method is a combination of rheo- and continuous castings. In rheo-casting process the nucleation occurs on cooling slope with high rate in whole casting volume, so nuclei are numerous, resulting in very fine microstructure of nodular crystals. In this work the rheo-continuous process was carried out with a casting machine using 2 rollers of same size: diameter of 300 mm and width of 100 mm. The pouring temperature is near-liquidus. The microstructure obtained is fine (grain size < 40 μm), with nodular morphology. The mechanical properties of as-cast samples were high (the tensile strength is above 220 MPa).

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5

Sołek, K., e L. Trębacz. "Thermo-Mechanical Model of Steel Continuous Casting Process". Archives of Metallurgy and Materials 57, n. 1 (1 marzo 2012): 355–61. http://dx.doi.org/10.2478/v10172-012-0034-3.

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Thermo-Mechanical Model of Steel Continuous Casting Process In the paper a numerical model of heat and mass transfer in the mould zone in the steel continuous casting technology was presented. The model has been developed using ProCAST software designed for simulation of casting processes. It allows to determine temperature and stress distribution in continuous castings in order to optimize the most important process parameters. In this work calculations were executed for low carbon steel grades casted in the industry. In the simulations the real rheological properties measured in the experimental work and the boundary conditions determined on the basis of the industrial data were used.

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6

Li, Yue, Ziming Wang, Xiaobin Zhou, Hong Xiao e Qiang Yue. "A review of electromagnetic stirring on solidification characteristics of molten metal in continuous casting". Metallurgical Research & Technology 121, n. 3 (2024): 312. http://dx.doi.org/10.1051/metal/2024029.

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The solidification of molten metal represents a pivotal phase in the preparation and shaping of metallic materials. Continuous casting, as a crucial juncture in the solidification of molten metal, occupies a position of paramount significance. Nevertheless, during the process of continuous casting, challenges emerge, including uneven temperature field distribution, non-uniform solidification microstructures, and the presence of impurities, leading to defects such as segregation and shrinkage in the castings. Researchers have devoted decades to addressing these issues, culminating in the discovery that the application of electromagnetic stirring during continuous casting can expedite the flow of molten metal, enhance solute diffusion, thereby achieving uniform temperature and flow field distributions, refining solidification microstructures, and ameliorating macrosegregation, among other benefits. This article provides an overview of the recent research achievements and advancements in the utilization of electromagnetic stirring during the continuous casting process. It primarily elucidates various stirring devices commonly employed in continuous casting and expounds upon the influence of electromagnetic stirring on solidification characteristics. And the current problems and future development trends in the application of electromagnetic stirring were discussed.

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7

Sun, Zu Li, Ming En Guo e Yu Chen Guo. "Research of Technological Factors on Producing Oxygen-Free Copper Strip in Horizontal Continuous Casting". Advanced Materials Research 538-541 (giugno 2012): 1097–100. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.1097.

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In the method that the oxygen-free copper strips are produced through undercurrent horizontal continuous casting-cold rolling process, there are some coarse grains, microscopic cracks, shrinkage, shrinkage and segregation defects in the oxygen-free copper strip billet, which debase the densities of the strip billet, and are the main reasons for rejected castings during machining operation. Through the orthogonal experiment of the technical factors in the casting process, the mapping model of artificial neural networks have been established using the data obtained in the experiments, which built the relationship among the densities of casting blank and technological factors. With the help of this model, the optimal casting conditions have been researched by using GA optimizations method and real experiments. The results show that micro-structure of castings was improved and the densities of the strip billets are enhanced.

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8

Kim, Myoung Gyun, Gyu Chang Lee e Joon Pyo Park. "Continuous Casting and Rolling for Aluminum Alloy Wire and Rod". Materials Science Forum 638-642 (gennaio 2010): 255–60. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.255.

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Since the Continuous Casting & Rolling of the non-ferrous metal by Illario Properzi have invented in 1944, the various non-ferrous rod, wire and sheet are produced at present. Although there is long research and trials for producing the wire or rod of commercial the high-strength aluminum alloy, there are few companies with the success in producing commercial hard-aluminum alloys wire and rod by CC&R process. The application of the high-strength aluminum alloy rod or wire is various parts such as rivet, bolt, sports leisure supplies, high-tension power transmission wire, machinable and forgeable materials. However, it is very difficult to produce the high-strength aluminum alloy wire and rod by CC&R process because of the wide mushy zone and high strength compared with the pure or low strength aluminum alloy. Additionally, it is easy to crack and breakout in casting and rolling process due to tiny internal defects of the castings. The object of this project is to design the most suitable equipments for CC&R and optimize the experimental condition of continuous casting condition of the high-strength aluminum alloy. The facilities of CC&R process in RIST are composed of the melting furnace, the wheel casting machine, the automatic machine for moving of castings bar, the 15-step rolling machine with three rolls, the induction heater for reheating the castings bar and the coiling machine. In the present work, through the numerical computer simulation, in first, we have developed the thermal model of the solidification behavior of the casting bar. Finally, using finite element code, Marc, the temperature distribution of each rolled bar and effective strain are obtained during continuous rolling.

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9

Marukovich, E. I., e E. B. Demchenko. "Heat transfer in the mold during vertical continuous casting of steel". Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), n. 3 (5 ottobre 2018): 26–30. http://dx.doi.org/10.21122/1683-6065-2018-3-26-30.

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The analysis of the performed researches has shown that the offered calculation technique is an effective means of management of formation process in casting. The found dependences and experimental data allow to calculate the specific value of the exactм heat flux in a given range of technological parameters obtained during a series of successful experiments for a particular casting method.Having the results of studies of the temperature regime of the mold during casting of a certain size and profile, it is possible to calculate the thermal state of the mold for the same casting process, but for the production of castings of any other size and profile.Having a certain amount of information on the temperature regime of the mold at different casting methods, you can use the solutions obtained to become the owner of a database containing the necessary information for solving the problems of solidification of the casting. In the subsequent design of equipment and equipment there is no need for additional experimental studies and analysis of the results.

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10

Pak, Yu A., D. V. Rabadzhi, T. S. Masal’skii, A. V. Filippov e D. V. Yurechko. "New continuous-casting equipment". Steel in Translation 42, n. 2 (febbraio 2012): 146–47. http://dx.doi.org/10.3103/s0967091212020179.

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11

MATSUO, Mamoru. "Continuous casting of aluminum." Journal of Japan Institute of Light Metals 44, n. 9 (1994): 510–25. http://dx.doi.org/10.2464/jilm.44.510.

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12

MATSUO, Mamoru. "Continuous casting of aluminum." Journal of Japan Institute of Light Metals 39, n. 7 (1989): 524–38. http://dx.doi.org/10.2464/jilm.39.524.

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13

Scholes, A. "Segregation in continuous casting". Ironmaking & Steelmaking 32, n. 2 (aprile 2005): 101–8. http://dx.doi.org/10.1179/irs.2005.32.2.101.

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14

Birat, J. P. "Continuous casting for tomorrow : Near-Net Shape Casting". Revue de Métallurgie 86, n. 4 (aprile 1989): 317–34. http://dx.doi.org/10.1051/metal/198986040317.

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15

Yu, Lin Hui, Ming Gang Shen, Ji Dong Li, Yi Yong Wang, Jian Ming Su e Chu Fei Han. "The Technology Study of Steel Belt Feeding Machine of Crystallizer of Continuous Casting". Applied Mechanics and Materials 727-728 (gennaio 2015): 513–16. http://dx.doi.org/10.4028/www.scientific.net/amm.727-728.513.

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Crystallizer steel belt feeding technology make use of melt’s fusion decalescence, controlling the distribution of melt temperature field, restrain the columnar crystal’s growing to eliminate the composition segregation and internal loose of continuous casting. And it will improve the continuous casting’s quality. By discussing the effect of casting speed, the size of steel, casting section and other factors on the steel belt feeding speed, making comparison of different casting section get strip suitable feeding speed and range of strip size, combining with a steel for steel strip feeding test mold, its theoretical and practical production results the basic agreement

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16

Sergejevs, Andrejs, Artis Kromanis, Janis Ozolins e Eriks Gerins. "Influence of Casting Velocity on Mechanical Properties and Macro-Structure of Tin Bronzes". Key Engineering Materials 674 (gennaio 2016): 81–87. http://dx.doi.org/10.4028/www.scientific.net/kem.674.81.

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Continuous casting is the most productive method of casting. Manufacturers often tend to increase casting velocity without taking into account the fact that it can cause latent defects within the casting and accordingly lead to a deterioration of the mechanical properties of product. The casting process of tin bronzes encumbers high shrinkage and high segregation in the cross section of the castings. The research was performed on three types of tin bronze alloys CuSn12-C, CuSn5Zn5Pb2-C, and CuSn7Zn3Pb7-C (EN 1982:2008). Influence of casting velocity on mechanical properties and macrostructure was studied and optimal velocity parameters were given. The following study revealed a significant effect of the velocity of continuous casting on the mechanical properties of tin bronze, which was also reflected in the macrostructure of the selected samples. Based on the results of the study the recommendations about the optimal casting parameters to increase a quality of end-product were given. The recommendations were later implemented in the manufacturing confirming the value of this study.

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17

Ardelean, Erika, Marius Ardelean, Florin Drăgoi e Erika Popa. "Study on Continuous Casting of Steel by Sizes". Solid State Phenomena 188 (maggio 2012): 285–92. http://dx.doi.org/10.4028/www.scientific.net/ssp.188.285.

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Continuous casting of steel has gradually replaced traditional casting, due to many advantages such as: casting to a close form to the finished product, low steel losses, the possibility of sequential casting of steel, high productivity, quality of continuously cast product. To benefit of all these advantages, the continuous casting machine must be flexible relative to the demands of customers. This paper presents a comparative analysis relative to main parameters of steel continuous casting for more type of semi-finished product, by processing of data collected from a continuous casting plant with five casting wires. From this study, can be pointed reliable conclusions relatively to the correlation of casting factors and the operating parameters for casting machine and with quality indicators for semi-finished continuous casting product.

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18

Marukovich, E. I., e E. B. Demchenko. "Kinetics of steel casting solidification during vertical continuous casting". Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), n. 3 (14 ottobre 2022): 36–39. http://dx.doi.org/10.21122/1683-6065-2022-3-36-39.

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A technique that allows calculating the values of the specific heat flux in a given range of values of the technological parameters of casting and the maximum allowable thickness of the casting crust at the outlet of the mold is proposed. The information on the temperature regime of the mold at various casting parameters can serve as a database containing the necessary information to solve the casting solidification problems. With the subsequent design of tooling and equipment, there is no need for additional experimental studies and analysis of the results obtained.

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19

Soda, H., G. Motoyasu, A. McLean e A. Ohno. "Alloy Casting by the Horizontal Ohno Continuous Casting System". Cast Metals 6, n. 2 (luglio 1993): 76–86. http://dx.doi.org/10.1080/09534962.1993.11819130.

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20

Popkov, M. N., V. V. Reshetov e A. I. Trushin. "Horizontal continuous casting of steel". Steel in Translation 40, n. 1 (gennaio 2010): 38–46. http://dx.doi.org/10.3103/s0967091210010109.

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21

Lojen, Gorazd, Aleš Stambolić, Barbara Šetina Batič e Rebeka Rudolf. "Experimental Continuous Casting of Nitinol". Metals 10, n. 4 (14 aprile 2020): 505. http://dx.doi.org/10.3390/met10040505.

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Commercially available nitinol is currently manufactured using classic casting methods that produce blocks, the processing of which is difficult and time consuming. By continuous casting, wherein molten metal solidifies directly into a semi-finished product, the casting and processing of ingots can be avoided, which saves time and expense. However, no reports on continuous casting of nitinol could be found in the literature. In this work, Φ 12 mm nitinol strands were continuously cast. Using a graphite crucible, smelting of pure Ni and Ti in a medium frequency induction furnace is difficult, because it is hard to prevent a stormy reaction between Ni and Ti and to reach a homogeneous melt without a prolonged long holding time. Using a clay-graphite crucible, the stormy reaction is easily controlled, while effective stirring assures a homogeneous melt within minutes. Strands of nearly equiatomic chemical compositions were obtained with acceptable surface quality. The microstructure of strands containing over 50 at. % Ni, consisted of Ti2Ni and cubic NiTi, whereas the microstructure of strands containing less than 50 at. % Ni consisted of TiNi3 and cubic NiTi. This is consonant with the results of some other authors, and indicates that the eutectoid decomposition NiTi → Ti2Ni + TiNi3 does not take place.

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22

Zhou, Le-jun, Ying Ren e Pei-yuan Ni. "Special issue on continuous casting". Journal of Iron and Steel Research International 29, n. 1 (gennaio 2022): 1–2. http://dx.doi.org/10.1007/s42243-021-00721-z.

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23

Vapalahti, Sami, e Seppo Louhenkilpi. "Simulation of Continuous Casting Tundish". Materials Science Forum 473-474 (gennaio 2005): 421–28. http://dx.doi.org/10.4028/www.scientific.net/msf.473-474.421.

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24

McKay, S., N. S. Hunter, A. S. Normanton, V. Ludlow, P. N. Hewitt e B. Harris. "Continuous casting mould powder evaluation". Ironmaking & Steelmaking 29, n. 3 (giugno 2002): 185–90. http://dx.doi.org/10.1179/030192302225004142.

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25

Mills, K. C., P. Ramirez-Lopez, P. D. Lee, B. Santillana, B. G. Thomas e R. Morales. "Looking into continuous casting mould". Ironmaking & Steelmaking 41, n. 4 (maggio 2014): 242–49. http://dx.doi.org/10.1179/0301923313z.000000000255.

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26

Duman, Ekrem, Mehmet Bayram Yildirim e Ali Fuat Alkaya. "Scheduling continuous aluminium casting lines". International Journal of Production Research 46, n. 20 (15 ottobre 2008): 5701–18. http://dx.doi.org/10.1080/00207540701355212.

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27

Johnson, Robert E., e Harish P. Cherukuri. "Vertical continuous casting of bars". Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences 455, n. 1981 (8 gennaio 1999): 227–44. http://dx.doi.org/10.1098/rspa.1999.0310.

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28

Harada, H., E. Anzai e E. Takeuchi. "Continuous Casting of Hollow Billets". Canadian Metallurgical Quarterly 39, n. 3 (gennaio 2000): 307–18. http://dx.doi.org/10.1179/cmq.2000.39.3.307.

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29

Steinrück, Herbert, Christian Rudischer e Wilhelm Schneider. "Modelling of continuous casting processes". Nonlinear Analysis: Theory, Methods & Applications 30, n. 8 (dicembre 1997): 4915–25. http://dx.doi.org/10.1016/s0362-546x(96)00279-9.

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Harris, B., A. S. Normanton, G. Abbel, B. Barber, I. Baillie, R. Koldewijn, A. Chown et al. "5th European Continuous Casting Conference". Ironmaking & Steelmaking 33, n. 2 (aprile 2006): 82–91. http://dx.doi.org/10.1179/174328106x101510.

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31

Aksel'rod, L. M., N. I. Lisitsyna, V. P. Simonov e V. S. Lisin. "Horizontal continuous casting machine nozzles". Refractories 31, n. 3-4 (marzo 1990): 243–46. http://dx.doi.org/10.1007/bf01282377.

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32

Wolf, M. "Henry Bessemer and continuous casting". Revue de Métallurgie 98, n. 1 (gennaio 2001): 63–73. http://dx.doi.org/10.1051/metal:2001159.

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Kunstreich, S. "Electromagnetic stirring for continuous casting". Revue de Métallurgie 100, n. 4 (aprile 2003): 395–408. http://dx.doi.org/10.1051/metal:2003198.

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Vdovin, K. N., A. E. Pozin, A. A. Podosyan e I. E. Petrov. "Mold for Continuous Casting Machines". Metallurgist 59, n. 3-4 (luglio 2015): 305–7. http://dx.doi.org/10.1007/s11015-015-0101-x.

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Liberman, A. L. "New solutions in continuous casting". Metallurgist 44, n. 1 (gennaio 2000): 30–32. http://dx.doi.org/10.1007/bf02467058.

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Ardelean, Marius, Alina Lăscuțoni, Erika Ardelean e Ana Socalici. "Optimization of Synthetic Slag Additions Used in Continuous Casting of Steel". Solid State Phenomena 254 (agosto 2016): 176–81. http://dx.doi.org/10.4028/www.scientific.net/ssp.254.176.

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The appropriate use and in adequate quantities of synthetic slags in continuous casting process (insulating coating powder in tundish and respectively lubricant molding powder in crystallizer) gives a good quality of continuous castings products. The paper presents two methods of determining the necessary of slags: using dispersion analysis software Minitab.v17 and optimization of heat transfer in tundish, depending on powder coating thickness, performed with a program made in Mathcad14 and respectively optimization of the molding powder thickness, using an own simulation program. Both methods are based on the properties of steel grade which is casted (in particular the liquidus temperature of the steel) and they can be adapted to the specifics of the continuous steel casting machines.

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Bartocha, D., T. Wróbel, J. Szajnar, W. Adamczyk, W. Jamrozik e M. Dojka. "The Influence of Casting Velocity on Structure of Al Continuous Ingots". Archives of Metallurgy and Materials 62, n. 3 (26 settembre 2017): 1609–13. http://dx.doi.org/10.1515/amm-2017-0246.

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AbstractThe aim of paper was determination of influence of the casting velocity in horizontal continuous casting process on solidification phenomenon and next primary structure of aluminum ingots. In the range of studies was conducted the experiment concerning continuous casting of Al ingots with diameter 30 mm at velocity from 30 to 80 mm/min. Moreover was developed adequate to the real the virtual model of cooled water continuous casting mould, which was used in simulation of solidification process of Al continuous ingot, made in ANSYS Fluent software. In result was determined the influence of casting velocity and temperature of cooling water on position of crystallization front inside the continuous casting mould. While the shape and size of grains in primary structure of Al continuous ingots were determined on the basis of metallographic macroscopic studies. On the basis of the results analysis was affirmed that increase of casting velocity strongly influences on position of crystallization front and causes increase of temperature of ingot leaving the continuous casting mould. In result the increase of casting velocity supposedly leads to decrease of temperature gradient on crystallization front what creates coarse grains in primary structure of aluminum continuous ingots and caused low usable properties i.e. suitability to plastic deformation.

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Elshan Jafarov, Elshan Jafarov, e Lala Aliyeva Lala Aliyeva. "ADVANCED TECHNOLOGIES IN STEEL PRODUCTION". ETM - Equipment, Technologies, Materials 14, n. 02 (18 aprile 2023): 47–52. http://dx.doi.org/10.36962/etm14022023-47.

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Continuous casting is essentially the youngest and most dynamically developing technology in the steel production and casting system as an industrial method of shaped casting process. At present, continuous casting of steel is adopted in more than 90 countries of the world. About 2,000 continuous casting machines (CCMs) of different purposes and designs are now in good operation, which allow casting about 93% of all steel produced in the world. At this time, steel bars with the following maximum cross-sections are produced in the industry: blue 600×670mm, slab 250×3200mm and circular bars with a diameter of 600mm. In many developed countries of the world, almost 95-100% of steel production is produced by continuous casting. is being for example, in 2018, 1.228 billion tons of steel were produced by continuous casting in the world, which is a record in the history of metal production. as a result of experimental studies, proposals were developed for the application of important technologies in the development of non-furnace processing of liquid metal and continuous casting in the Republic. Keywords: Steel making, permanent casting devices, construction, vacuuming, liquid metal, intermediate heat, temperature, impact viscosity, electrometallurgy.

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Brovman, M. Ya. "Stresses in the metal of a casting during continuous casting". Russian Metallurgy (Metally) 2006, n. 6 (dicembre 2006): 508–17. http://dx.doi.org/10.1134/s0036029506060073.

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Soda, H., A. McLean e G. Motoyasu. "A note on casting speed of Ohno continuous casting process". Materials Science and Technology 26, n. 8 (agosto 2010): 1015–16. http://dx.doi.org/10.1179/174328409x411844.

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Kuklev, A. V., Yu M. Aizin, I. F. Goncharevich e A. V. Manuilov. "Improved feed of casting powders into continuous-casting-machine molds". Metallurgist 53, n. 5-6 (maggio 2009): 274–76. http://dx.doi.org/10.1007/s11015-009-9173-9.

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Sadat, Mohammad, Ali Honarvar Gheysari e Saeid Sadat. "The effects of casting speed on steel continuous casting process". Heat and Mass Transfer 47, n. 12 (3 giugno 2011): 1601–9. http://dx.doi.org/10.1007/s00231-011-0822-8.

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Fu, Jian-Xun, Wen-Sing Hwang, Jing-She Li, Shu-Feng Yang e Zhang Hui. "Effect of Casting Speed on Slab Broadening in Continuous Casting". steel research international 82, n. 11 (24 maggio 2011): 1266–72. http://dx.doi.org/10.1002/srin.201100116.

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Zhou, Xue Feng, Feng Fang e Jian Qing Jiang. "A Study on the Microstructure of AISI M2 High Speed Steel Manufactured by Continuous Casting". Advanced Materials Research 146-147 (ottobre 2010): 1211–15. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.1211.

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Continuous casting has been widely applied in the production of steels and other metals. However, it has been rarely used in producing high speed steels, which are still manufactured by the conventional method of mould-casting. Thus, little is known about the microstructure of high speed steels made by the continuous casting technology. In the present work, AISI M2 steel is produced by horizontal continuous casting and the difference of solidification microstructure of ingots by different casting technologies has been examined. The results show that the networks of M2C eutectic carbides are greatly refined in the ingot by continuous casting compared to that by mould casting. Meanwhile, the morphology of M2C eutectic carbides changes from the plate-like type to the fibrous one, due to the increasing cooling rates. Compared with the plate-like M2C, the fibrous M2C in continuous casting ingots is less stable and decomposes faster at high temperatures, spheroidizing obviously after heating and refining dimensions of carbides.

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45

Chen, Shou Dong, Jing Chao Chen e Lian Hao Lv. "Simulation of Microstructures in Solidification of Continuous Casting Aluminum Alloy Thin Strip". Advanced Materials Research 399-401 (novembre 2011): 1750–54. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.1750.

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Based on the research on the solidification of twin-roll continuous casting aluminum alloy thin strip, the analytical model of heterogeneous nucleation, the growth kinetics of tip (KGT) of twin-roll continuous casting aluminum alloy thin strip solidification are established by means of the principle of metal solidification, meantime based on the cellular automaton, the emulational model of twin-roll continuous casting aluminum alloy thin strip solidification is established. The foundation for the emulational simulation of twin-roll continuous casting thin strip solidification structure is laid. Meanwhile has confirmed the mathematical simulation feasibility by using the solidification process of twin-roll continuous casting aluminum alloy Thin Strip.

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46

Li, Mu Yi, Yan Hu e Hai Hao. "Continuous Casting of a Multi-Crystalline Silicon Billet". Materials Science Forum 833 (novembre 2015): 112–16. http://dx.doi.org/10.4028/www.scientific.net/msf.833.112.

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In order to improve the production efficiency, numerical simulation and experiments of continuous casting of a multi-crystalline silicon (mc-silicon) billet were carried out. Modeling works were done firstly to optimize casting recipe and predict billet cooling behaviors, a three-dimensional finite element model for the simulation of thermal field and fluid flow was built. The continuous casting of cylindrical silicon billet was studied considering different casting parameters such as withdrawal speed and heat transfer ability of mold. The simulation results indicate that lower casting speed and lower heat transfer coefficient of mold are beneficial to acquire better morphology. Experimental works were practiced lying on the modeling results, using the self-designed mc-silicon continuous casting apparatus, mc-silicon billet with a diameter of 100 mm was obtained.

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Pan, Qiuhong, Wei Jin, Shouzhi Huang, Yufeng Guo, Mingyuan Jiang e Xuan Li. "Simulation and Study of Influencing Factors on the Solidification Microstructure of Hazelett Continuous Casting Slabs Using CAFE Model". Materials 17, n. 8 (18 aprile 2024): 1869. http://dx.doi.org/10.3390/ma17081869.

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Abstract (sommario):

The Hazelett continuous casting and rolling process represents a leading-edge production method for cold-rolled aluminum sheet and strip billets in the world. Its solidification microstructure significantly influences the quality of billets produced for cold rolling of aluminum sheets and strips. In this study, employing the CAFE (Cellular Automaton—Finite Element) method, we developed a coupled computational model to simulate the solidification microstructure in the Hazelett continuous casting process. We investigated the impact of nucleation parameters, casting temperature, and continuous casting speed on the microstructural evolution of the continuous casting billet. Through integrated metallographic analyses, we aimed to elucidate the controlling mechanisms underlying the Hazelett continuous casting process and its resultant microstructure. The results demonstrate that the equiaxed rate of grains increases with an increase in nucleation density, and the grain size decreases under constant cooling strength. With other nucleation parameters held constant, the grain size decreases as undercooling increases, and the columnar crystal zone expands. The nucleation density of the Hazelett continuous casting aluminum alloy has been determined to range between 1011 m−3 and 1013 m−3, and the undercooling ranges between 1 °C and 2.5 °C. The solidified grain structure can be controlled between 35 μm and 72 μm. The grain size of the continuous casting billet increases with an increase in pouring temperature and decreases as the casting speed increases. Elevating the pouring temperature positively impacts the fraction of high-angle grain boundaries and promotes the dendritic to equiaxed grain transition. Moreover, there exists potential for further optimization of continuous casting process parameters.

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Shakhov, S. I., e K. N. Vdovin. "Electromagnetic Stirring in Continuous-Casting Machines". Steel in Translation 49, n. 4 (aprile 2019): 261–64. http://dx.doi.org/10.3103/s0967091219040120.

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49

Stulov, V. V. "Cooling a slab continuous-casting mold". Journal of Machinery Manufacture and Reliability 41, n. 2 (aprile 2012): 163–67. http://dx.doi.org/10.3103/s1052618812020161.

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50

GUNJI, Koki. "Continuous Casting of Steel-Today, Tomorrow-". Tetsu-to-Hagane 71, n. 8 (1985): 934–38. http://dx.doi.org/10.2355/tetsutohagane1955.71.8_934.

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