Development of a mathematical model and its application to the stress evolution of a multi-crystalline silicon billet during continuous casting

作者：Hu, Yan; Li, Muyi; Hao, Hai^*

来源：International Journal of Materials Research, 2016, 107(9): 790-800.

DOI：10.3139/146.111409

• Continuous casting
• Multi-crystalline silicon
• Boundary condition
• Stress
• Validation

A mathematical model of the continuous casting process for multi-crystalline silicon billet has been developed to predict the stress evolution in the billet using the commercial finite element package, ProCAST. The calculated temperature was validated by the measured data, and the good agreement shows the reliability of the present model. The effects of casting parameters on the stress of a billet were investigated and the simulation results were validated by the analytical calculation data. The results indicated that the stress slightly decreased with the increasing of the pouring temperature. With increasing the cooling intensity in the secondary cooling zone and decreasing the casting speed, the billet stress increased. In the present work, it was found that at a pouring temperature of 1 560 degrees C, with air cooling in the secondary cooling zone and a casting speed of 1 mm s(-1), a billet with low stress could be continuously cast.

• 出版日期2016-9
• 单位大连理工大学