GH4169高温合金表面电解辅助微铣削工艺研究Research on Electrochemical-Assisted Micro-Milling Process on the Surface of GH4169 Superalloy
李棒,何亚峰,朱延松,汪思鹏
摘要(Abstract):
由于GH4169高温合金热导率低、在高温下能保持很高的强度,导致铣削加工过程中切削温度高、切削力大.为此,采用可转位双刀片-双阴极铣刀,对GH4169高温合金表面进行电解辅助微铣削加工,探究在不同加工参数下电解辅助微铣削表面质量的变化规律,并对传统铣削和电解辅助微铣削试验结果进行对比.结果表明,电解辅助微铣削可以去除传统铣削表面的刀痕、点蚀和碎屑等缺陷,同时出现了腐蚀凹坑和晶界腐蚀缺陷;相较于传统铣削,电解辅助微铣削可以显著提高加工表面质量;电解辅助微铣削表面粗糙度和表面残余应力随加工电压的增大而减小,为获得较好的加工表面质量,应选择较大的加工电压水平.
关键词(KeyWords): 电解辅助微铣削;高温合金;表面质量;表面粗糙度;表面残余应力
基金项目(Foundation): 江苏省自然科学基金面上项目(BK20211061);; 安徽高校协同创新项目(GXXT-2022-019)
作者(Author): 李棒,何亚峰,朱延松,汪思鹏
DOI: 10.16393/j.cnki.37-1436/z.2024.02.008
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