超声电火花复合加工钛合金表面质量研究  

Study on the Surface Roughness of Ti-alloy in Ultrasonic Combined Electro-discharge Machining(EDM)

作　　者：张云鹏[1] 赵伟[2] 孙广标[1] 张安洲[1] 

机构地区：[1]西北工业大学机电学院,陕西西安710072 [2]长安大学汽车学院,陕西西安710064

出　　处：《电加工与模具》2009年第1期22-25,59,共5页Electromachining & Mould

摘　　要：采用电火花加工及超声电火花复合加工的方法对TC4钛合金进行了加工实验,分析了小电参数下两种加工方法中脉宽和峰值电流对表面粗糙度的影响,研究表明超声电火花复合加工可有效地降低零件表面粗糙度值。通过扫描电镜对零件表面形貌的分析和重熔层厚度的观测以及零件表面X射线衍射分析,表明采用超声电火花复合加工钛合金零件可获得较好的表面质量。The experiments of machining TCA by EDM and ultrasonic assisted EDM were carried out. The effect of fine electrical parameter （pulse width and peak current） on surface roughness in two machining methods was analyzed. It was confirmed that ultrasonic combined EDM could effectively reduce surface roughness. Scanning electronic microscope was used to analyze the micro profiles of surface and test the thickness of re-melting layer; the X ray diffractomete was used to detect the machining surfaces component. With the observation results that ultrasonic combined EDM could gain better surface quality of TC4.

关 键 词：超声电火花复合加工 表面粗糙度 重熔层 扫描电镜 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程]