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
陈成 1滕凯 2孙涛2
作者信息
- 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
- 折叠
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.
Abstract
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Key words
WEDM/Powder Mixed/Orthogonal Test/SiC Nano Dielectric引用本文复制引用
基金项目
江苏省高等学校自然科学研究重大项目(19KJA560007)
出版年
2024
NETL
NSTL
维普
万方数据