镍基高温合金脉冲电弧加工表面完整性研究  

Study of Nickel Base Superalloy Surface Integrity in Pulsed Arc Machining

作　　者：朱晨光[1] 周建平[1] 汪兵兵[1] 

机构地区：[1]新疆大学机械工程学院,新疆乌鲁木齐830047

出　　处：《机床与液压》2015年第11期27-29,33,共4页Machine Tool & Hydraulics

基　　金：国家自然科学基金资助项目(51365053);机械制造系统工程国家重点实验室开放基金(SKLMS2013003)

摘　　要：研究脉冲电弧加工镍基高温合金表面微观形貌,包括变质层厚度及特征、加工表面粗糙度、显微硬度,综合考虑以上各方面,研究脉冲电弧工作时,脉冲频率、占空比两种加工参数对表面变质层完整性的影响规律,得出频率和占空比较高时更容易产生裂纹,较低的频率和占空比会使熔化凝固层的厚度提高。Pulsed arc machining nickel base superalloy surface micro topography was studied. Metamorphic layer thickness and characteristics, surface roughness machining, and microhardness were included. By considering the above aspects comprehensively, the laws were studied of the surface in[egrity of metamorphic layer influenced by two kinds of processing parameters such as pulse frequency and duty cycle during pulsed arc machining. It is concluded that a higher frequency and duty cycle is more prone to producing cracks, and the lower is to increase the thickness of recast layer.

关 键 词：脉冲电弧加工 镍基高温合金 熔化凝固层 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]