摘要
电火花加工中,电极是影响加工质量和加工效率的重要因素。电沉积是制备电极材料的有效方法,为了改善沉积层质量,将超声场引入到电沉积中,采用金相显微镜、扫描电子显微镜观察电铸铜层微观形貌,并测试显微硬度和电火花耐电蚀性。结果表明,超声电沉积得到的铜铸层晶粒更加细小、均匀,致密性好;显微硬度比普通电沉积铜提高20%以上;电极相对损耗低,抗电蚀性能得到提高。
In the electrical discharge machining, electrode is an important factor which influence the machining quality and speed. Electroforming is an effective method of making electrode. In order to improve the electroforming quality, ultrasonic is added into the electroforming process. The microstructure of the electroformed copper layer was observed by Optical Microscope （ OM ） and Scanning Electron Microscope （SEM）. The mechanical properties were evaluated with a Vickers-hardness tester. The results show that the grain of the copper layer distributes more uniformly in ultrasonic condition and its size is smaller. The microhardness of the copper layer is raised 20% and the electrode erosion rate is decreased.
出处
《现代制造工程》
CSCD
北大核心
2012年第10期11-13,共3页
Modern Manufacturing Engineering
基金
国家自然科学基金资助项目(51105235)
山东省自然科学基金资助项目(ZR2009FQ030)
关键词
超声电沉积
加工电极
微观结构
ultrasonic electroforming
electrode
microstructure
