超声振动辅助旋切式电解磨削加工镍基高温单晶合金小孔实验研究  

Experimental Study on Ultrasonic Vibration Assisted Rotary Cutting Electrolytic Grinding for Machining Small Holes in Nickel-based Single Crystal Superalloys

作　　者：陈海升 岳晓明 张建华[1] 齐世伟 陈永雷 CHEN Haisheng;YUE Xiaoming;ZHANG Jianhua;QI Shiwei;CHEN Yonglei(School of Mechanical Engineering,Shandong University,Ji'nan 250061,China;Rizhao Institute of Shandong University,Rizhao 276800,China;Xinyue Machinery(Shandong)Co.,Ltd.,Weifang 261500,China)

机构地区：[1]山东大学机械工程学院,山东济南250061 [2]山东大学日照研究院,山东日照276800 [3]山东信悦机械有限公司,山东潍坊261500

出　　处：《电加工与模具》2025年第2期73-78,86,共7页Electromachining & Mould

基　　金：国家重点研发青年科学家项目(2021YFF0501700);山东省自然科学基金项目(ZR2023ME222)。

摘　　要：镍基高温单晶合金具有优良的高温性能,广泛用于制造航空发动机和燃气轮机的耐高温零件。采用电火花电解复合加工技术在镍基高温单晶合金上加工小孔存在加工表面质量差、孔径精度低等问题。为此,提出一种超声振动辅助旋切式电解磨削加工技术,研究了超声振动、磨削和电解等工艺参数对孔壁表面质量和孔径精度的影响。结果表明,经工艺参数优化可得到表面粗糙度≤Ra0.3μm、入口直径为808.596 mm、出口直径为800.082 mm、孔锥度约为0.122°的小孔,实现了镍基高温单晶合金小孔的高品质、高精度加工。Nickel-based high-temperature single crystal alloys have excellent high-temperature performance and are widely used in the manufacturing of high-temperature resistant parts in aircraft engines and gas turbines.There are problems with poor surface quality and low accuracy in machining small holes on nickel-based high-temperature single crystal alloys using electrical discharge machining and electrochemical machining techniques.Accordingly,the ultrasonic vibration assisted rotary cutting electrochemical grinding(RCEG)technology is proposed.The influence of process parameters of ultrasonic vibration,grinding,and electrolysis on the surface quality and machining accuracy of small wall is studied.Through process parameter optimization,high-quality and high-precision machining of small holes on nickel-based high-temperature single crystal alloys using ultrasonic vibration assisted rotary cutting electrochemical grinding has been achieved,including surface roughness≤Ra0.3μm,inlet diameter 808.596 mm,outlet diameter 800.082 mm,and hole taper about 0.122°.

关 键 词：超声振动辅助加工 旋切式电解磨削 镍基高温单晶合金 加工表面质量 

分 类 号：TG663[金属学及工艺—金属切削加工及机床] TG662