摘要
短电弧铣削加工过程中,不同工具电极材料对加工后的工件表面质量以及电极损耗有很大的影响,并且在加工时,正负极性的不同,也会导致工具电极损耗、加工效率有所变化。针对此现象展开深入的分析并进行实验探究。实验结果表明:钨铜合金作为工具电极材料进行加工时,工件表面质量以及电极损耗均比以石墨、紫铜作为工具电极材料进行加工时有显著改善;其次,在加工时采用正极性加工比负极性加工虽然表面质量略微有所降低,但工具电极损耗有明显的减小,且加工效率与之相比有显著的提高,通过对加工后的综合因素评定,可知短电弧铣削加工镍基高温合金(GH4169)时宜采用正极性加工。
Short arc milling process,different electrode materials have great influence on the surface quality of the workpiece after machining and electrode loss,and in the process,the polarity is different,will also cause the tool electrode wear and machining efficiency change. This article launches the thorough analysis to this phenomenon,and carries on the experiment inquisition. The experimental results show that when the tungsten copper alloy is used as the tool electrode material,the surface quality and electrode loss of the alloy are significantly improved when compared with graphite and copper as tool electrode materials; secondly,in the process of the anode processing than negative polarity while the surface quality slightly decreased,but the tool electrode loss is obviously reduced,and the processing efficiency significantly increased,assessed by comprehensive factors after processing,the short arc machining of nickel based superalloy（ GH4169） should adopt positive polarity machining.
作者
许燕
何巍杨
周建平
孙延龙
XU Yan;HE Weiyang;ZHOU Jianping;SUN Yanlong(School of Mechanical Engineering, Xinjiang University, Urumqi 830047, CH)
出处
《制造技术与机床》
北大核心
2018年第6期160-163,共4页
Manufacturing Technology & Machine Tool
基金
国家自然科学基金资助项目:镍基高温合金短电弧高效切削过程中再铸层表面完整性及热变形行为研究(51365053)
自治区青年科技创新人才培养工程(gn2015yx008)
