机械科学与技术2026，Vol.45Issue(7)：1136-1143,8.DOI:10.13433/j.cnki.1003-8728.20260022
YG6硬质合金微细异形锥孔电火花加工工艺
Process Research of YG6 Cemented Carbide Micro Special-shaped Tapered Holes by Electrical Discharge Machining
摘要
Abstract
In order to improve the electrical discharge machining(EDM)of YG6 cemented carbide micro special-shaped tapered holes and address issues of severe electrode wear and poor surface quality,this paper proposes a novel process:Prefabricating a bottom hole followed by final forming.Firstly,the size distribution of eroded particles was examined.Then,based on fluid dynamics theory,a model was established to determine the optimal bottom hole dimensions.Finally,the novel process was compared with the conventional one-step forming method.Results show that at an electrode rotation speed of 100 r/min,the new process achieves peak efficiency,25.45％higher than the traditional method.At this speed,average electrode length wear rate decreases by 19.57％,average taper wear rate decreases by 4.97％,and machined surface roughness is controlled within Ra=0.2 μm.The strategy of prefabricating a bottom hole prior to final shaping proves highly effective in the EDM of micro special-shaped tapered holes.关键词
硬质合金/电火花加工/微细异形锥孔/电极损耗/表面粗糙度Key words
cemented carbide/electrical discharge machining/micro special-shaped tapered holes/electrode wear/surface roughness分类
矿业与冶金引用本文复制引用
李东晖,李殿新,刘建勇,徐铭成,黄一敏..YG6硬质合金微细异形锥孔电火花加工工艺[J].机械科学与技术,2026,45(7):1136-1143,8.基金项目
国家重点研发计划(2023YFB4605900)与京津冀科技创新协同专项(Z251100005225003) （2023YFB4605900）
