燕山大学学报2026，Vol.50Issue(4)：291-300,10.DOI:10.3969/j.issn.1007-791X.2026.04.002
钨微针套料变参数电火花-电解复合加工研究
Study on trepanning variable-parameter electrochemical discharge machining of tungsten microneedles
摘要
Abstract
Tungsten microneedles have broad application prospects.However,the high hardness and high melting point of tungsten make it difficult for conventional methods to simultaneously achieve high forming efficiency,dimensional accuracy,and surface quality.To address this issue,a two-stage variable-parameter study on trepanning electrochemical discharge machining of tungsten microneedles was carried out.Through constant-parameter experiments,the effects of peak current and pulse width on machining performance and surface morphology were analyzed,and the critical values of peak current and pulse width were determined to be approximately 9 A and 9 μs,respectively.On this basis,a two-stage variable-parameter machining scheme with strong parameters in the first stage and weak parameters in the second stage was established.The results show that the two-stage variable-parameter machining strategy can significantly improve the overall diameter-reduction efficiency of tungsten microneedles and enhance tip convergence.Among all the tested parameter combinations,the combination of 18 A and 24 μs in the first stage and 8 A and 6 μs in the second stage showed the best performance,with a material removal rate of 638.82 μg/s,an electrode wear rate of 73.21 μg/s,a tip diameter of 24.78 μm and a surface roughness of 0.72 μm.Therefore,the two-stage variable-parameter trepanning electrochemical discharge machining strategy can achieve high machining efficiency,good surface quality,and a tiny tip diameter,providing an effective solution for the fabrication of tungsten microneedles.关键词
变参数/电火花加工/电解加工/复合加工/钨微针Key words
variable parameter/electrical discharge machining/electrochemical machining/hybrid machining/tungsten microneedles分类
矿业与冶金引用本文复制引用
汤仁毅,张斌,张彦,崔恒,吕成威..钨微针套料变参数电火花-电解复合加工研究[J].燕山大学学报,2026,50(4):291-300,10.基金项目
江苏省六大人才高峰项目(JXQC-009) （JXQC-009）
