TC4电火花线切割参数优化及变质层研究  

Study on TC4 WEDM Metamorphic Layer and Parameter Optimization

作　　者：李海星[1] 李文斌[1] LI Hai-xing;LI Wen-bin(College of Mechanical Engineering,Taiyuan University of Technology,Shanxi Taiyuan 030024,China)

机构地区：[1]太原理工大学机械工程学院,山西太原030024

出　　处：《机械设计与制造》2018年第4期87-89,93,共4页Machinery Design & Manufacture

摘　　要：电火花线切割加工Ti6Al4V(以下简称TC4)这种重要的航天应用合金时,其材料去除率及表面质量是重要的加工性能参考指标。故通过多因素序贯实验中常用的最陡坡度法,寻找一组出色的电参数组合以满足对加工TC4合金性能指标要求,并利用灰度关联分析方法优化电参数组合,达到较为出色的综合性能。利用扫描电镜观测各参数变化对变质层的影响并分析,通过曲面响应方法分析验证各电参数对材料去除率及粗糙度影响关系。通过实验,达到了预期的加工效果,验证了分析的准确性,此种方法可为实际生产中电火花线切割加工TC4合金提供理论指导。When Wire-cutting process the important aerospace alloy-Ti6Al4V,the material removal rate and surface quality is an important reference index of processing performance.So we look for a good combination of electrical parameters in order to meet the processing TC4 alloy performance requirements by using Steepest Descent Method of multivariate sequential experiments,and we use the Gray RelationalMethod to optimize the combination of electrical parameters to achieve move excellent overall performance.Response surface methodology Use scanning electron microscope observe and analysis how changes of parameters impact the metamorphic layer.Verify all the electrical parameters of the material removal rate and surface roughness on the relationship by response surface methodology.Through the experiment,we achieve the desired processing results and verify the accuracy of the analysis,this method may be the actual production to wire cut electrical discharge machining TC4 alloy.

关 键 词：TC4 电火花线切割加工 最陡坡度法 灰度关联法 变质层 曲面响应法 

分 类 号：TH16[机械工程—机械制造及自动化]