Abstract
1．Electrochemical machining (ECM 电化学加工) is an anodic dissolution process（阳极溶解工艺）of workpiece（to machine workpieces）in a flowing electrolyte（电解质）where the shape of the tool as cathode is copied into the workpiece as anode with the removal of the anode ion by ion（the shape of the cathode （as tool）is copied onto the workpiece (as anode) with the removal of the anode in ions ）.
Due to the tiny size of metal ions, this micro-dissolution process brings ECM tremendous potential in the micro-manufacturing field. Wire electrical discharge machining (WEDM 线切割)（As for Wire electrical discharge machining (WEDM)），because of tool wear, the metal wire with the diameter of more than 30μm must be used as the wire electrode of WEDM , and the wire must move quickly for the compensation of the tool wear（工具磨损补偿）. Therefore, WEDM will be restricted in the potential of micro machining in the future.( Therefore, WEDM has great limitations for its applications in micro machining in the future.)
Wire electrochemical micromachining (WEMM 微细电化学线切割加工), which is the combination of electrochemical micro machining and the idea of wire cutting, was proposed as a new method of micro machining in this dissertation. Because of no electrode wear in this process，the micrometer or tens micrometer structure can be fabricated. The proposed
technology can be used in the field of aviation, precise instrument, biological and medicinal instrument. The dissertation consisted of five sections, including☹( The proposed technique can be used in the field of aviation & aerospace industry, precision instrument(注意：精密仪器不能译为precise instrument), biological and medical(不能用medicinal) instrument. The dissertation consists(不要用过去时) of five sections, including☺
1.The fundamental theory of WEMM was investigated. Firstly, the
characteristics of WEMM were summarized. Secondly, the theoretical model of WEMM was built based on the Bulter-Volmer equation and Faraday’s laws, and the top limit of the velocity of feed forward (feed rate 进给率) was studied.
2.At last, the boundary layer theory of micro fluid (微流体边界层理论）
was introduced into the analysis of the transport mechanism of materials in the micro scale gap（微尺度间隙）of WEMM, and the solution of improving the examination of materials in micro gap.( the solution to improving the discharge of materials from the micro gap, solution 固定搭配跟to,排放是discharge 而不是examination)
3.The machining system of WEMM was developed. The movement
system, measuring system, wire electrode system, high-frequency short-pulse power supply （高频短脉冲电源）and electrolyte system
