45钢扫描电子束不同倾斜角度的斜面表面抛光与改性的研究  

Study on Polishing and Modification of Inclined Surface of 45 Steel by Scanning Electron Beam with Different Inclination Angles

作　　者：魏德强[1] 夏腾辉 李新凯 郭锦岩 WEI Deqiang;XIA Tenghui;LI Xinkai;GUO Jinyan(Faculty of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guilin 541004,China;Department of Practice Teaching,Guilin Institute of Aerospace Industry,Guilin 541004,China)

机构地区：[1]桂林电子科技大学机电工程学院,广西桂林541004 [2]桂林航天工业学院实践教学部,广西桂林541004

出　　处：《热加工工艺》2021年第12期109-112,共4页Hot Working Technology

基　　金：国家自然科学基金项目(51665009);广西自然科学基金重点项目(2017GXNSFDA198007)。

摘　　要：针对表面具有不同角度斜面类的模具产品,工作中易出现磨损失效和疲劳失效等。使用常规抛光效率低。采用连续型扫描电子束斜面抛光技术,研究了倾斜角度对表面抛光与力学性能的影响规律。结果表明,改性层的显微组织为针状马氏体和板条马氏体混合相的组织。在斜面倾斜角度为0°~15°,且束流小于8mA时,表面粗糙度数值减小。此外,在改性层上,随着倾斜角度和束流的增加,其显微硬度和耐磨性反而下降,但仍优于未处理的表面。For mold products surface with different angle bevel type, proning to wear failure and fatigue failure. Using conventional polishing is low efficiency. Adopting the continuous scanning electron beam cant polishing technology, the influence law of inclined angle on the surface polishing and mechanical property was studied. The results show that the microstructure of the modified layer is the mixture of acicular martensite and lath martensite. When the slope angle is 0°-15° and the beam is less than 8 mA, the surface roughness values decrease after polishing and modifying. In addition, with the increase of inclination angle and beam flow, the microhardness and wear resistance of the modified layer decrease, but is still better than that of the untreated surface.

关 键 词：斜面 扫描电子束 表面抛光 力学性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]