摘要
建立了电火花线切割极间介质电阻模型,分析了加工能量与极间介质电导率、工件厚度之间的关系,并对极间介质电阻模型进行了实验验证.研究结果表明,随着电导率的升高或者工件厚度的增加,放电期间极间"漏电流"增大,损耗在极间介质的能量增加,加工效率降低,电导率变化导致的极间电阻改变对于加工效率的影响显著.
A resistance model of （WEDM） was established. And interelectrode dielectric fluid in wire electrical discharge machining the relationship among machining energy, electrical conductivity and thickness of a workpiece was analyzed. The resistance model of interelectrode dielectric fluid was verified by experiments. The results show that with the higher electrical conductivity or the thickness of work- piece, the larger the interelectrode leakage current is during discharge, the more the energy loss in the in- terelectrode dielectric fluid, the lower the machining efficiency. Cutting efficiency is obviously influenced by the change of the resistance which is due to the change of electrical conductivity.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2012年第7期1015-1020,共6页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金研究项目(50975142)
江苏省自然科学基金(BK2008393)
关键词
电火花线切割
工作介质
介电特性
电导率
放电能量
wire electrical discharge machining（WEDM）
dielectric fluid
dielectric properties
electricalconductivity
discharging energy
