摘要
为了探究离心式钢球强化研磨加工中研磨料配比对GCr15轴承钢球硬度的影响规律,得到最佳研磨料配比,通过进行不同研磨料配比的钢球强化研磨试验,并从GCr15轴承钢球的3D形貌、表面粗糙度、微织构深度、强化层厚度、马氏体含量、晶粒尺寸和位错密度等多个维度分析了强化研磨料配比对钢球硬度的影响规律。结果表明:不同的研磨料配比,钢球的硬度都与表面粗糙度、微织构深度、强化层厚度、马氏体含量和位错密度呈正相关,与晶粒尺寸呈负相关;研磨料配比太低会减少研磨均匀撞击,太高会减缓研磨冲击,都不利于钢球的强化加工;当研磨料配比为1%,钢球强化效果最好,表层硬度也最高。
In order to investigate the influence of grinding material ratio on the hardness of GCr15 bearing steel balls in centrifugal steel ball reinforced grinding processing,and obtain the optimal grinding material ratio,this paper conducts steel ball reinforced grinding experiments with different grinding material ratios,and analyzes the influence of reinforced grinding material ratios on steel ball hardness from multiple dimensions such as 3D morphology,surface roughness,micro texture depth,reinforced layer thickness,martensite content,grain size,and dislocation density of GCr15 bearing steel balls.The results show that the hardness of steel balls with different grinding material ratios is positively correlated with surface roughness,micro texture depth,reinforced layer thickness,martensite content,and dislocation density,while negatively correlated with grain size;If the grinding material ratio is too low,it will reduce the uniform impact of grinding,and if it is too high,it will slow down the grinding impact,which is not conducive to the reinforced processing of steel balls;When the grinding material ratio is 1%,the reinforced effect of steel ball is the best,and the surface hardness is the highest.
作者
谢碧洪
萧金瑞
冯文康
刘晓初
谢鑫成
XIE Bi-hong;XIAO Jin-rui;FENG Wen-kang;LIU Xiao-chu;XIE Xin-cheng(Luoding Polytechnic,Luoding 527200 China;Guangzhou University,Guangzhou 510006 China)
出处
《新余学院学报》
2023年第6期27-35,共9页
Journal of Xinyu University
基金
广东省科技创新战略专项“郁南县大方镇南药种植智能节水灌溉系统应用示范”(2022020434)
广州市科技计划项目“机器人减速器圆锥滚子轴承套圈强化研磨加工表层微结构创成及调控研究”(202102080225)。
关键词
钢球强化研磨
研磨料配比
GCr15轴承钢球
硬度
steel ball reinforced grinding
grinding material ratio
GCr15 bearing steel ball
hardness
