射流冲击强化改性研磨对G30Cr15MoN轴承钢表面性能的影响  

Effect of Jet Impact Strengthening Modified Grinding on Surface Properties of G30Cr15MoN Bearing Steel

作　　者：梁忠伟[1,2,3] 黄珊珊 刘晓初 范立维[1,2,3] 何森 LIANG Zhongwei;HUANG Shanshan;LIU Xiaochu;FAN Liwei;HE Sen(School of Mechanical and Electrical Engineering,Guangzhou University,Guangzhou 510006,China;Guangdong Engineering and Technology Research Centre for Strengthen Grinding and High Performance Micro-Nanomachining,Guangzhou 510006,China;Robot Intelligent Equipment Research Platform of Guangzhou Industry and Information Commission,Guangzhou 510006,China)

机构地区：[1]广州大学机械与电气工程学院,广州510006 [2]广东省强化研磨高性能微纳加工工程技术研究中心,广州510006 [3]广州市工业和信息化委员会服务机器人及智能装备研究平台,广州510006

出　　处：《轴承》2023年第5期24-32,共9页Bearing

基　　金：国家自然科学基金资助项目(51975136,52075109);广东省高等学校科技创新团队项目(2017KCXTD025);广东省高等学校重点领域专项项目(2019KZDZX1009);广州高校产学研重点专项资助项目(202235139);广州大学校内科研项目(YJ2021002)。

摘　　要：为探究射流冲击强化改性研磨加工对G30Cr15MoN轴承钢表面强化过程的影响规律,运用Abaqus有限元软件以单硬质球模型为基础,改变球心点距离进行多球数值模拟,分析不同球数加工后的G30Cr15MoN轴承钢沿采样路径产生的残余应力、等效塑性变形和表面形貌规律,并与试验结果对比分析。结果表明:随着硬质球数增加,G30Cr15MoN靶材在同一层深下产生的等效塑性变形值增大,等效塑性变形的深度不变,硬质球数从9粒增加到13粒时,产生的最大等效塑性变形、残余应力和表面粗糙度值增幅最大;不同数量硬质球均在0.2 mm处出现残余压应力峰值,具有次表层强化特征;残余应力变化幅度与等效塑性变形变化幅度趋势一致;13粒硬质球数值模拟获得的表面残余应力、最大残余应力、表面粗糙度值与射流冲击强化改性研磨加工试验数据基本吻合,验证了仿真模型的正确性。In order to investigate the effect of jet impact strengthening modified grinding on surface strengthening process of G30Cr15MoN bearing steel,the Abaqus finite element software is used to establish a single hard ball model,and the multi-ball numerical simulation is carried out by changing the distance between center points of balls.When the number of balls is different,the laws of residual stress,equivalent plastic deformation and surface morphology of G30Cr15MoN bearing steel along sampling path are analyzed and compared with test results.The results show that with the increase of number of hard balls,the equivalent plastic deformation value produced by G30Cr15MoN target at same layer depth increases,and the depth of equivalent plastic deformation remains unchanged,the maximum equivalent plastic deformation,residual stress and surface roughness value increase maximally when the number of hard balls increases from 9 to 13;the all residual compressive stress peaks appear at 0.2 mm for different number of hard balls,which have the characteristics of subsurface strengthening;the changing trend of residual stress amplitude is consistent with that of equivalent plastic deformation;the surface residual stress,maximum residual stress and surface roughness values obtained by numerical simulation of 13 hard balls are basically consistent with test data of jet impact strengthening modified grinding,verifying the correctness of simulation model.

关 键 词：滚动轴承 轴承钢 改性 研磨 残余应力 塑性变形 表面粗糙度 数值模拟 

分 类 号：TH133.33[机械工程—机械制造及自动化] TF762[冶金工程—钢铁冶金]