高速钢轧辊差温热处理残余应力的数值分析

Numerical analysis on residual stress in high speed steel roll during differential heat treatment

利用有限元软件MSC.Marc建立了高速钢复合轧辊差温热处理过程的仿真模型,分析了差温加热与淬火过程中轧辊残余应力的变化与分布规律。通过比较有限元结果与试验结果,验证了仿真模型的准确性。在此基础上,研究了差温加热速度、塑性变形和材料组织转变对残余应力的影响,本文结果为阐明轧辊热处理残余应力的产生机理及合理安排热处理工艺提供了参考。

Variations and distributions of residual stress in high speed steel roll during differential heat treatment were investigated by using finite element software MSC.Marc.The accuracy of this simulation model was verified by comparing FEM(Finite Element Method)results with experiment results.On this base,the influences of differential heating ratio,plastic deformation and material phase transformation on residual stress were studied.The obtained results provide references for clarifying the generation mechanism of the residual stress and rationally arranging the heat treatment process of rolling rolls.