摘要
采用电解–磁力复合研磨工艺对GH4169合金进行表面光整加工。探究了磁极转速、电解电压和磁性研磨粒子直径对GH4169合金表面粗糙度的影响。获得了较佳的电解–磁力复合研磨参数:磁极转速1 200 r/min,电解电压9 V,磁性研磨粒子直径185μm。在优化的工艺参数下对GH4169合金研磨10 min,其表面粗糙度从原始的0.90μm降至0.08μm,表面微观形貌得到明显改善,化学成分不变,表面由拉应力转变为压应力状态。
The GH4169 nickel-based superalloy was finished by electrolytic-magnetic composite grinding. The effects of magnetic pole speed, electrolysis voltage and size of magnetic abrasive particles on the surface roughness of GH4169 alloy were studied. The optimal process parameters of electrolytic-magnetic composite grinding were obtained as follows： magnetic pole speed 1 200 r/min, electrolysis voltage 9 V, and magnetic abrasive particle size 185 ttm. The surface roughness of GH4169 alloy is decreased from 0.90 μm previously to 0.08μm after grinding using the optimal process parameters for 10 min. Its microscopic surface morphology is improved apparently with unchanged chemical composition, and the surface stress is converted from tensile to be compressive.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2017年第15期807-811,共5页
Electroplating & Finishing
基金
国家自然科学基金(51105187)
辽宁省教育厅基金(2016HZZD02)
关键词
镍基高温合金
磁力研磨
电解
表面粗糙度
形貌
应力
nickel-based superalloy
magnetic grinding
electrolysis
surface roughness
morphology
stress
