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| NUMERICAL SIMULATION ON TEMPERATURE FIELD IN HIGH SPEED STEEL COMPOSITE ROLL DURING CONTINUOUS POURING PROCESS FOR CLADING I. Graphite Mould Method |
| FENG Mingjie, WANG Engang, HE Jicheng |
| Key Laboratory of National Education Ministry for Electromagnetic Processing of Materials, Northeastern University, Shenyang 110819 |
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Cite this article:
FENG Mingjie WANG Engang HE Jicheng. NUMERICAL SIMULATION ON TEMPERATURE FIELD IN HIGH SPEED STEEL COMPOSITE ROLL DURING CONTINUOUS POURING PROCESS FOR CLADING I. Graphite Mould Method. Acta Metall Sin, 2011, 47(12): 1495-1502.
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Abstract The effects of original preheating temperature of core, casting speed, preheating power and supplement heat power on unsteady state temperature field in high speed steel composite roll billet and the parameters match relationship during graphite mould continuous pouring process for cladding have been numerically simulated by use of interface and user–defined functions based on Ansys 10.0 and Fluent 6.3 software. The results indicate that the required induced preheating power increases with increasing casting speed and decreasing original preheating temperature of core when the finishing preheating temperature of core–surface is constant. The higher temperature zone only lies in the surface layer of core and the temperature in mostly zone of core is not affected by inducing coil when the core moves off the preheating coil. The highest temperature of core–surface and duration above its solidus increase with increasing supplement heating power and decreasing casting speed. When the casting speed matched with supplement heat power, the high speed steel can tightly bond with core to form the composite roll.
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Received: 22 March 2011
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| Fund: Supported by National High Technology Research and Development Programme of China (No.2003AA331050) and National Natural Science Foundation of China (No.200809123) |
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