Transactions of Materials and Heat Treatment

Title：Surface roughness of 7050 aluminum alloy strengthened by ultrasonic rolling extrusion

Authors： Chen Jian1 Liu Fei2 3 Wang Xiaoqiang2 3

Unit： 1. Jutong Elevator College Henan Mechanical and Electrical Vocational College 2. School of Mechatronics Engineering Henan University of Science and Technology 3. Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of Henan Province

KeyWords： ultrasonic rolling extrusion strengthening 7050 aluminum alloy surface roughness orthogonal test exponential function predictive model method gray relative analysis method

ClassificationCode：TG376.1

year,vol(issue):pagenumber：2021,46(12):148-153

Abstract：

In order to obtain the sensitivity of the processing parameters on surface roughness in the process of ultrasonic rolling extrusion strengthening for 7075 alumiunm alloy, the orthogonal test on surface roughness of 7050 aluminum alloy strengthened by ultrasonic rolling extrusion was carried out, and based on surface roughness test results, the influence degree of processing parameters on surface roughness were determined by range analysis method, exponential function prediction model method and grey correlation analysis method. The results show that in the process of ultrasonic rolling extrusion strengthening for 7050 aluminum alloy, the order of influence degree of processing parameters on surface roughness is workpiece rotate speed, static pressure and feeding speed, and the optimal processing parameter level of surface roughness is n=350 r·min-1, F=400 N, f=10 mm·min-1. Furthermore, the three different methods are mutually tested, and the sensitivity of processing parameters on the surface roughness is consistent. Thus, in the process of ultrasonic rolling extrusion strengthening, the best surface quality of the workpiece can be achieved by reasonably controlling the processing parameters, which have significant influence on the surface roughness.

Funds：

国家自然科学基金资助项目（U1804145）

作者简介：陈捡（1985-），男，硕士，讲师 E-mail：263718315@qq.com 通信作者：刘飞（1989-），男，硕士 E-mail：liufei07104517@163.com

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