碳化硅纳米介质电火花线切割加工研究  

Experimental Study on WEDM with SiC Nano-Mixed Powder Working Fluid

作　　者：陈成[1] 滕凯 孙涛[2] CHEN Cheng;TENG Kai;SUN Tao(Intelligent Manufacturing Department,Wuxi Vocational College of Science and Technology,Jiangsu Wuxi 214028,China;School of Mechanical and Electrical Engineering,Xuzhou Institute of Technology,Jiangsu Xuzhou 221018,China)

机构地区：[1]无锡科技职业学院智能制造学院,江苏无锡214028 [2]徐州工程学院机电工程学院,江苏徐州221018

出　　处：《机械设计与制造》2024年第4期244-247,共4页Machinery Design & Manufacture

基　　金：江苏省高等学校自然科学研究重大项目(19KJA560007)。

摘　　要：采用SiC纳米混粉工作液对Cr12MoV模具钢进行高速走丝线切割加工试验,重点分析了脉冲宽度、脉冲间隔、峰值电流和混粉浓度对切割加工的影响。试验表明,在脉冲宽度45μs,脉冲间隔6倍,峰值电流25A,混粉浓度0.3g/L的加工条件下,采用混粉工作液较采用常规工作液加工的切割速度提高21.16%,表面粗糙度降低15.05%。研究认为,纳米微粒的介入,极间绝缘性降低,放电间隙增大,改善了极间放电条件,提高了工件加工稳定性和切割速度;同时,纳米微粒促使极间火花放电通道增多、放电点分散,提高了工件表面加工质量。The work fluid of SiC nano-mixed powder is adopted to the HS-WEDM Test of Cr12MoV Die Steel.The research ana-lyzes the effect of pulse width,pulse current,peak current and mixed powder concentration on cutting process and finds that the cutting speed of SiC nano-medium is increased by 21.16%and the surface roughness of SiC nano-medium is reduced by 15.05%under the processing conditions of pulse width 45µs,6 times pulse interval,peak current 25A and mixed powder concentration 0.3g/L.The analysis shows that the intervention of nanoparticles improves the discharge conditions between the electrodes and in-creases the machining stability and the cutting speed through enlarging discharging-gap.At the same time,the intervention of nanoparticle improves the surface processing quality through increasing the spark discharge channel between the electrodes and dispersing the discharging points.

关 键 词：电火花线切割 混粉 正交试验 SiC纳米介质 

分 类 号：TH16[机械工程—机械制造及自动化] TG661[金属学及工艺—金属切削加工及机床]