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 1何亚峰 2朱延松 3汪思鹏1
作者信息
- 1. 安徽理工大学机电工程学院,安徽 淮南 232001
- 2. 安徽理工大学机电工程学院,安徽 淮南 232001;常州工学院航空与机械工程学院,江苏 常州 213032
- 3. 安徽理工大学机电工程学院,安徽 淮南 232001;合肥综合性国家科学中心能源研究院(安徽省能源实验室),安徽 合肥 230051
- 折叠
摘要
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.
Abstract
Due to the low thermal conductivity of GH4169 superalloy and its ability to maintain high strength at high temperatures,the cutting temperature and cutting force are high during milling process.Therefore,electrochemical-assisted micro-milling with an indexable double blade-double cathode milling cutter is used to process the surface of GH4169 superalloy.The changes in surface quality of electrochemi-cal-assisted micro-milling under different processing parameters are investigated,and the experimental re-sults of traditional milling and electrochemical-assisted micro-milling are compared.The results show that electrochemical-assisted micro-milling can remove defects such as tool marks,pitting,and debris on the surface of traditional milling,while corrosion pits and grain boundary corrosion defects appear.Compared with traditional milling,electrochemical-assisted micro-milling can significantly improve the surface quali-ty.The surface roughness and residual stress decrease with the increase of processing voltage.To obtain better surface quality,a higher processing voltage level should be selected.
关键词
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Key words
electrochemical-assisted micro-milling/superalloy/surface quality/surface roughness/surface residual stress引用本文复制引用
基金项目
江苏省自然科学基金面上项目(BK20211061)
安徽省高等学校协同创新项目(GXXT-2022-019)
出版年
2024
NETL
NSTL
万方数据