关键词: 电火花线切割加工, 多层板, 串联供液, 加工方式

Abstract: A new technology based on series liquid supply WEDM of stainless steel plates using multi-layer stacking was proposed in order to increase the cutting speed and surface quality of wire cut electrical discharge machining of stainless steel plate and further reduce the wire electrode wear. Compared with conventional liquid supply,the cutting speed was increased by 24.70 %,the surface roughness was reduced by 32.11 % and the electrode wire loss reduction was decreased by 83.88 % under the new process. The study found that the series fluid supply technology significantly improved the velocity and flow rate of the inter-electrode fluid,enhanced the chip removal ability and expanded the discharge gap by combining the pressure differential flow and shear flow in the same direction. This technology effectively improved the inter-electrode discharge conditions,inhibited partial discharge phenomenon,significantly increased the discharge stability and provided important support for the optimization of electrical discharge machining processes.

Key words: Wire cut Electrical Discharge Machining(WEDM), multi-layer board, series liquid supply, cutting method