Transactions of Materials and Heat Treatment

Title：Optimization on machining parameters for ultrasonic rolling extrusion bearing rings based on interaction

Authors： Fu Haoran Xu Hongyu Wang Xiaoqiang Tian Yingjian

Unit： College of Mechanical and Electrical Engineering Henan University of Science and Technology

KeyWords： ultrasonic rolling extrusion process parameters interaction affiliation degree surface performance

ClassificationCode：TG376.1

year,vol(issue):pagenumber：2023,48(7):115-122

Abstract：

For 42CrMo steel, the orthogonal experiments of ultrasonic rolling extrusion were conducted to achieve the optimal control of machining parameters, and the significance of machining parameters on surface performance was analyzed using affiliation function evaluation relationship between machining parameters and surface performance established by the entropy weight theory. Then, according to the principle of maximum affiliation degree of interaction, the interaction among machining parameters was analyzed to obtain the optimal combination of machining parameters, and the results were verified by establishing an exponential regression model. The results show that the degree of influence for machining parameters on surface performance is as follows: feed speed>static pressure>amplitude>rotational speed. The interaction between feed speed and static pressure has the greatest influence, followed by feed speed and amplitude, amplitude and static pressure, and the influence of rotational speed and feed speed, amplitude and static pressure is the smallest. The optimal machining parameters are the rotation speed of 550 r·min-1, the feed speed of 55 mm·min-1, the amplitude of 5 μm and the static pressure of 480 N, and the comparison verification errors are controlled below 5%, which realizes the global optimization of surface performance.

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：付浩然(1995-)，男，硕士研究生 E-mail：1375525941@qq.com 通信作者：徐红玉（1972-），男，博士，教授 E-mail：xuhongyu@haust.edu.cn

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