Transactions of Materials and Heat Treatment

Title：Prediction on grain size of steel bar 20A in hot continuous rolling based on numerical simulation

Authors： Zhang Chi Shan Huiyun Bai Mei

Unit： Chongqing University of Technology

KeyWords： steel bar 20A hot continuous rolling finite element simulation grain size physical experiments

ClassificationCode：TG335.6

year,vol(issue):pagenumber：2017,42(3):159-164

Abstract：

The parameters of steel bar 20A in hot rolling process were simulated and optimized by Deform-3D finite element analysis software and orthogonal tests, and the finite element numerical simulation and physical experiment verification of the grain structure for steel bar 20A under the hot rolling technology were carried out. Comparing with the numerical simulation and physical experiments, the result shows that under the condition of optimum technological parameters, the average grain size of steel bar 20A is 45.8 mm and 47.56 mm from the results of simulation and experiment respectively. The above two values are all satisfied with the technical requirements and the error is only 3.7%. The grain size in hot rolling deformation process can be predicted successfully by FEM.

Funds：

重庆市模具技术重点实验室（重庆理工大学）开放课题（MT201503）

张驰（1964-），男，硕士，教授

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