摘要
以42CrMo钢为研究对象进行超声滚挤压正交试验,实现加工参数的优化控制。利用基于熵权理论建立的加工参数与表层性能之间的隶属函数评价关系,分析了加工参数对表层性能的显著性;根据交互作用最大隶属度原则,分析了加工参数间的交互作用,得出最优加工参数组合,并通过建立指数回归模型进行验证。结果表明:加工参数对表层性能的影响程度依次为:进给速度>静压力>振幅>转速;进给速度与静压力之间的交互作用的影响最大,进给速度与振幅、振幅与静压力次之,转速与进给速度、振幅、静压力的影响最小;最优加工参数为转速为550 r·min^(-1)、进给速度为55 mm·min^(-1)、振幅为5μm、静压力为480 N,对比验证误差均控制在5%以下,实现了表层性能的全局最优。
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 5μm and the static pressure of 480 N,and the comparison verification errors are controlled below 5%,which realizes the global optimization of surface performance.
作者
付浩然
徐红玉
王晓强
田英健
Fu Haoran;Xu Hongyu;Wang Xiaoqiang;Tian Yingjian(College of Mechanical and Electrical Engineering,Henan University of Science and Technology,Luoyang 471003,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2023年第7期115-122,共8页
Forging & Stamping Technology
基金
国家自然科学基金资助项目(U1804145)
国家重点研究计划(2018YFB2000405)。
关键词
超声滚挤压
加工参数
交互作用
隶属度
表层性能
ultrasonic rolling extrusion
process parameters
interaction
affiliation degree
surface performance
