MICRO ELECTRICAL DISCHARGE MACHINING DEPOSITION IN AIR  

作　　者：JIN Baidong ZHAO Wansheng WANG Zhenlong CAO Guohui 

机构地区：[1]School of Mechanical Engineering, Harbin Institute of Technology, Harbin 150001, China

出　　处：《Chinese Journal of Mechanical Engineering》2006年第4期622-625,共4页中国机械工程学报（英文版）

基　　金：This project is supported by National Natural Science Foundation of China (No.50275038).

摘　　要：A new deposition method is described using micro electrical discharge machining （EDM） to deposit tool electrode material on workpiece in air. The basic principles of micro electrical discharge deposition （EDD） are analyzed and the realized conditions are predicted. With an ordinary EDM shaping machine, brass as the electrode, high-speed steel as the workpiece, a lot of experiments are carried out on micro EDD systematically and thoroughly. The effects of major processing parameters, such as the discharge current, discharge duration, pulse interval and working medium, are obtained, As a result, a micro cylinder with 0.19 mm in diameter and 7.35 mm in height is deposited. By exchanging the polarities of the electrode and workpiece the micro cylinder can be removed selectively. So the reversible machining of deposition and removal is achieved, which breaks through the constraint of traditional EDM. Measurements show that the deposited material is compact and close to workpiece base, whose components depend on the tool electrode, material.A new deposition method is described using micro electrical discharge machining （EDM） to deposit tool electrode material on workpiece in air. The basic principles of micro electrical discharge deposition （EDD） are analyzed and the realized conditions are predicted. With an ordinary EDM shaping machine, brass as the electrode, high-speed steel as the workpiece, a lot of experiments are carried out on micro EDD systematically and thoroughly. The effects of major processing parameters, such as the discharge current, discharge duration, pulse interval and working medium, are obtained, As a result, a micro cylinder with 0.19 mm in diameter and 7.35 mm in height is deposited. By exchanging the polarities of the electrode and workpiece the micro cylinder can be removed selectively. So the reversible machining of deposition and removal is achieved, which breaks through the constraint of traditional EDM. Measurements show that the deposited material is compact and close to workpiece base, whose components depend on the tool electrode, material.

关 键 词：Electrical discharge machining（EDlVD Electrical discharge deposition（EDD） Reversible machining Processing pararneters 

分 类 号：TH16[机械工程—机械制造及自动化]