Transactions of Materials and Heat Treatment

Title：Finite element analysis and parameter optimization on surface hardness of ultrasonic rolling for 42CrMo steel

Authors： Wang Paigang1 2 Wang Xiaoqiang1 2 Wang Haojie1 2 Cao Liru1 2

Unit： 1.College of Mechanical and Electrical Engineering Henan University of Science and Technology 2.Collaborative Innovation Center of Advanced Manufacturing of Mechanical Equipment

KeyWords： ultrasonic rolling 42CrMo steel surface hardness constitutive model finite element analysis

ClassificationCode：TG376.1

year,vol(issue):pagenumber：2023,48(3):152-158

Abstract：

To improve the corrosion resistance and fatigue resistance of 42CrMo steel parts, a finite element simulation model of ultrasonic rolling was established based on ABAQUS, and through single factor test and response surface method, the effect rules and influence degrees of process parameters on the surface hardness of 42CrMo steel were analyzed. At the same time, the significance test and process parameters optimization of the established second-order response surface model were carried out. The results show that the surface hardness of 42CrMo steel increases first and then decreases with the increasing of rotational speed and feeding speed, and increases with the increasing of amplitude and static pressure. From the response surface analysis, it can be seen that the amplitude has the greatest impact on the surface hardness, and the optimal process parameters combination obtained by optimization is the rotation speed of 418 r·min-1, the feeding speed of 15 mm·min-1,the amplitude of 25 μm were and the static pressure of 600 N. The ultrasonic rolling test was carried out on the optimization results, and the simulation optimization results were compared with the test results, and the error is within 5%, which verifies the feasibility of the ultrasonic rolling simulation to predict the surface hardness of 42CrMo steel.

Funds：

国家自然科学基金资助项目(U1804145)；国家重点研究计划（2018YFB2000405）

作者简介：王排岗(1994-)，男，硕士 E-mail：1395055213@qq.com 通信作者：王晓强（1972-），男，博士，教授 E-mail：wang_xq2002@163.com42CrMo

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