基于曲面响应法的短电弧磨削蜂窝环工艺研究  

Research on Short Electric Arc Machining and Grinding Honeycomb Ring Process Based on Response Surface Methodology

作　　者：汪兵兵 王子健 丁胜威 周建平[2] WANG Bingbing;WANG Zijian;DING Shengwei;ZHOU Jianping(Aviation College of Changji University,Changji Xinjiang 831100,China;College of Intelligent Manufacturing Modern Industry,Xinjiang University,Urumqi Xinjiang 830017,China)

机构地区：[1]昌吉学院航空学院,新疆昌吉831100 [2]新疆大学智能制造现代产业学院,新疆乌鲁木齐830017

出　　处：《机床与液压》2024年第12期52-58,共7页Machine Tool & Hydraulics

基　　金：新疆自然科学基金青年项目(2022D01C738)。

摘　　要：蜂窝密封结构是当代航空发动机的先进高效密封结构,传统加工难以满足加工质量的要求,需要采用短电弧加工技术加工此类零部件。为获得最优的加工参数,以重铸层厚度和微观形貌为指标,分析电流及电压波形、表面能谱、工件表面和截面形貌,并进行响应曲面分析。结果表明:对重铸层厚度和加工时间影响的显著性为:进给速度>工件转速>电极转速,重铸层厚度随进给速度增加而增加,随工件和电极转速增加而减小,且表面质量有相同的趋势。多目标优化获得最佳参数为:工件转速5.863 r/min,电极转速287.114 r/min,进给速度0.087 mm/min。因此,适当降低进给速度,提高工件和电极转速,可减少微裂纹、冲蚀凹坑和熔滴颗粒等现象,提高工件表面质量,降低重铸层厚度。Honeycomb sealing structure is an advanced and efficient sealing structure for contemporary aero-engine,and traditional machining is difficult to meet the machining quality requirements,so short electric arc machining(SEAM) technology is needed to process such parts.In order to obtain the optimal machining parameters,the recast layer thickness and micro morphology were taken as the indexes,the current and voltage waveforms,surface energy spectra,surface and cross-section morphology of the workpiece were analyzed,and response surface analysis was performed.The results show that the significance of the influence on the thickness of recast layer and machining time is feed rate>workpiece speed>electrode speed,the thickness of recast layer increases with the increase of feed rate and decreases with the increase of workpiece and electrode speed,and the surface quality has the same trend.The best parameters obtained by multi-objective optimization are:workpiece speed is 5.863 r/min,electrode speed is 287.114 r/min and feed rate is 0.087 mm/min.Therefore,appropriately reducing the feed rate and increasing the workpiece and electrode speed can reduce the phenomena of microcracks,erosion pits and molten droplet particles,improve the surface quality of the workpiece and reduce the thickness of the recast layer.

关 键 词：短电弧磨削 重铸层 表面质量 参数优化 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]