Transactions of Materials and Heat Treatment

Title：Numerical simulation analysis on induction tempering process for automotive drive motor bearing outer ring

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ClassificationCode：TG156

year,vol(issue):pagenumber：2024,49(7):251-263

Abstract：

In order to research the influence of induction tempering process parameters on temperature and microstructure distribution, realize the microstructure control of drive motor bearing, and improve the surface hardness and mechanical properties of bearing, a multi-field coupled electromagnetic-temperature-microstructure finite element model for induction tempering of bearing outer ring was established. Then, the influence laws of the induction tempering process parameters on the temperature field and the microstructure content of bearing cross-section were investigated, and the validity of the simulation model was verified by experiments. The results show that during the induction tempering process, the bearing cross-section appears a certain temperature difference along the radial direction, and the residual austenite content shows a gradient distribution along the radial direction of the cross-section. With the increasing of current density and current frequency or the decreasing of air gap, the temperature difference of bearing outer ring increases and the residual austenite content in the radial direction improves, and the gradient is more obvious.

Funds：

湖北省自然科学基金面上项目( 2022CFB378)；省部共建耐火材料与冶金国家重点实验室开放基金（G202403）

作者简介：魏文婷（1985-），女，博士，副教授 E-mail：wei_wt@whut.edu.cn

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