碳化硅悬浮介质电火花线切割加工研究  

Study on WEDM under SiC suspension medium

作　　者：滕凯 孙涛[1] 张磊[1] 伍文进[1] 阮成光[1] TENG Kai;SUN Tao;ZHANG Lei;WU Wenjin;RUAN Chengguang(School of Mechanical and Electrical Engineering,Xuzhou Institute of Technology,Xuzhou 221018,China)

机构地区：[1]徐州工程学院机电工程学院,徐州221018

出　　处：《现代制造工程》2022年第8期77-81,共5页Modern Manufacturing Engineering

基　　金：江苏省高等学校自然科学研究重大项目(19KJA560007,19KJA140002)。

摘　　要：以SiC纳米半导体微粒悬浮液为工作介质,对中走丝电火花线切割进行放电加工研究。粗加工时,与常规介质加工相比,采用悬浮介质加工的切割速度提高了22.16%,表面粗糙度降低了15.05%,电极丝损耗降低了21.87%。精加工时,与常规介质加工相比,采用悬浮介质加工的表面粗糙度降低了17.6%,电极丝损耗降低了12.5%。试验结果表明,SiC纳米半导体微粒的介入,降低了极间绝缘性,增大了放电间隙,改善了极间放电条件,有利于加工稳定性和切割速度的提高;极间电火花放电通道的串联与扩展,分散了脉冲放电能量,减弱了电极单位面积上的放电冲击力,有利于表面加工质量的提高和电极丝损耗的降低。The research on the discharge machining of wire winding Wire-cut Electrical Discharge Machining(WEDM)was carried out under the actuating medium of SiC semiconductor nanoparticle suspension.In the rough machining,with the suspension medium,the cutting speed was increased by 22.16%,the surface roughness was reduced by 15.05%,and the wire electrode wear was reduced by 21.87%,compared with the conventional medium machining under the same processing condition.In the finish machining,with the suspension medium,the surface roughness was reduced by 17.6%,and the wire electrode wear was reduced by 12.5%,compared with the conventional medium machining.The experimental results shows that the intervention of SiC semiconductor nanoparticles reduces the insulation between electrodes,increases the discharge gap and improves the discharge conditions between electrodes.In this way,the workpiece processing stability and cutting speed are improved;the series connection and expansion of inter electrode spark discharge channels disperse the pulse discharge energy and weaken the discharge impact force per unit area of the electrode.In this way,the workpiece surface processing quality is improved and the electrode wire wear is reduced.

关 键 词：电火花线切割 悬浮介质 切割速度 表面质量 电极丝损耗 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]