3D Numerical Simulation on Thermal Flow Coupling Field of Stainless Steel During Twin-Roll Casting
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- 作者：Lianlian Liu (1)
Bo Liao (1)
Jing Guo (1)
Ligang Liu (1)
Hongyan Hu (1)
Yue Zhang (2)
Qingxiang Yang (1) - 关键词：3D fluid ; structure coupling model ; heat transfer mechanism ; process parameters optimization ; thermal flow coupling field ; twin ; roll casting
- 刊名：Journal of Materials Engineering and Performance
- 出版年：2014
- 出版时间：January 2014
- 年：2014
- 卷：23
- 期：1
- 页码：39-48
- 全文大小：1,198 KB
- 作者单位：Lianlian Liu (1)
Bo Liao (1)
Jing Guo (1)
Ligang Liu (1)
Hongyan Hu (1)
Yue Zhang (2)
Qingxiang Yang (1)
1. State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao, 066004, People’s Republic of China
2. College of Materials Science and Engineering, University of Science and Technology, Beijing, 100083, People’s Republic of China - ISSN：1544-1024
文摘
The surface crack and lateral crack of the AISI 304 stainless steel thin strip produced by twin-roll casting were observed. The temperature at the center of outlet during twin-roll-casting process was determined by infrared thermometer. In order to avoid the surface cracks of the casting strip, the thermal flow coupling field of AISI 304 stainless steel during twin-roll-casting process was simulated by a 3D fluid-structure coupling model. According to the simulation result, the effect of the casting speed on thermal flow field was analyzed and the process parameters were optimized. Moreover, by studying heat flux curves, the heat transfer mechanism between molten pool and roll was analyzed. The results show that, with the increase of the casting speed, the temperature of the molten pool increases and the solidification point moves toward the outlet. Meanwhile, the whirlpool above gets larger. Based on the solidification front position, the optimized process parameters are 1500?°C and 0.37?m/s. The heat transfer mechanism between molten pool and roll contains direct contacting heat transfer and air gap heat transfer.