FGH96材料电解线切割精整加工试验研究OA
Experimental Study on Wire Electrochemical Trimming of FGH96 Superalloy
提出电火花/电解线切割组合加工方法,以期实现涡轮盘榫槽的高效高质量加工.以粉末高温合金FGH96 为对象,试验研究了电解线切割精整加工电参数、进给速度和切深对加工的影响.以完全去除重铸层为目标,兼顾表面质量和加工效率,优选出参数组合:重铸层被完全去除,表面粗糙度Ra从 2.24 μm降到 0.87 μm.开展榫槽电火花/电解线切割组合加工可行性试验,40 mm厚零件的平均加工速度为 84.86 mm2/min,加工表面无重铸层;电解线切割精整后榫槽沿高度方向的直线度误差降低了 66.9%.
In order to achieve the efficient precision machining of turbine slots,a combined process of wire electrical discharge machining(WEDM)and wire electrochemical machining(WECM)is proposed.Taking powder FGH96 superalloyas the object,the effects of the typical process parameters of WECM trimming(WECT)were studied,including electrical parameters,feed rate,and cutting depth.With the goal of completely removing the recast layer,meanwhile considering the surface quality and machining efficiency,the process parameters were optimized:the recast layer is completely removed,and the surface roughness Ra is reduced from 2.24 μm to 0.87 μm.The feasibility experiment of the coupling WEDM and WECT process was carried out.The average machining rate of 40 mm thick parts reaches 84.86 mm²/min,and there is no recast layer on the surface.After WECT,the straightness error along the height direction of the slots is reduced by 66.9%.
徐浩;冯业飞;李元琨;韩钊;王旭青;房晓龙
南京航空航天大学 机电学院,南京 210016中国航发北京航空材料研究院 先进高温结构材料重点实验室,北京 100095南京航空航天大学 机电学院,南京 210016南京航空航天大学 机电学院,南京 210016中国航发北京航空材料研究院 先进高温结构材料重点实验室,北京 100095南京航空航天大学 机电学院,南京 210016
矿业与冶金
电解线切割涡轮盘榫槽重铸层表面粗糙度
WECMturbine slotsrecast layersurface roughness
《机械科学与技术》 2026 (2)
244-252,9
国家自然科学基金项目(51975291)、航空发动机及燃气轮机基础科学中心项目(P2022-B-IV-010-001)及中央高校基本科研业务费(NE2022004)
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