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| Numerical Simulation on ThermoMechanical Coupling in Bloom Mold by Finite Element Method |
| CHEN Yong1,2,LUO Xin3,SHEN Houfa3 |
| 1.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China;2.Department of Material Research, Panzhihua Iron and Steel Research Institute, Panzhihua 617000, Sichuan, China; 3. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China |
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Abstract A thermomechanical finite element model was established to analyze the heat transfer from mold to strand and stress distribution in strand based on the air gap resistance between solidified shell and mold by considering the influence of the mold flux on the thermal resistance among the strand, the flux film and the mold. The calculated strand shell thicknesses agreed well with the measured with a difference within 2 mm. The heat transfer in the mold and stress distribution in the bloom at different casting speeds were obtained by using the model. It was shown that when the casting speed was increased from 0.7 m/min to 0.9 m/min, the strand temperature became higher and the solidified shell thickness became thinner, which increased the cracking risk near the strand corners.
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Received: 01 January 1900
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2009, Vol. 44 
