渗氮X210CrW12钢挺柱的微粒子喷丸工艺  

Microparticle Shot Peening Process of Nitrided X210CrW12 Steel Tappet

作　　者：姚亚俊 罗长增 吴心波 徐得石 陈月春 姜传海[4] YAO Yajun;LUO Changzeng;WU Xinbo;XU Deshi;CHEN Yuechun;JIANG Chuanhai(Weichai Power Co.,Ltd.,Weifang 261061,China;State Key Laboratory of Engine and Powertrain System,Weifang 261061,China;College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]潍柴动力股份有限公司,潍坊261061 [2]内燃机与动力系统全国重点实验室,潍坊261061 [3]南京航空航天大学材料科学与技术学院,南京211106 [4]上海交通大学材料科学与工程学院,上海200240

出　　处：《机械工程材料》2025年第3期55-60,共6页Materials For Mechanical Engineering

基　　金：山东省重点研发计划资助项目(2024CXPT067)。

摘　　要：以直径0.3 mm钢丸、直径0.1 mm陶瓷丸、直径0.1 mm玻璃丸为弹丸,对整体渗氮的X210CrW12钢挺柱分别进行玻璃丸(喷丸强度0.07 mm,由A试片测得,下同)、陶瓷丸(喷丸强度0.15 mm)+玻璃丸(喷丸强度0.07 mm)、钢丸(喷丸强度0.30 mm)+陶瓷丸(喷丸强度0.15 mm)+玻璃丸(喷丸强度0.07 mm)等3种工艺的微粒子喷丸处理,研究了不同工艺喷丸后挺柱的表面形貌、表面粗糙度、残余应力、残余奥氏体含量和显微硬度。结果表明:喷丸处理对渗氮X210CrW12钢挺柱的表面粗糙度影响不大,但可以提高表层的残余压应力大小和层深以及硬度,降低残余奥氏体含量。经单一玻璃丸喷丸强化后,挺柱表层残余压应力较低且分布较浅,奥氏体含量较高,硬度较低;相比于单一玻璃丸的喷丸工艺,经陶瓷丸+玻璃丸喷丸强化后,残余压应力及其层深增大,显微硬度升高,残余奥氏体含量降低;经钢丸+陶瓷丸+玻璃丸喷丸强化后,表面残余压应力最大,外圆面和端面的残余压应力分别为1180,1238 MPa,残余压应力层深超过200μm,残余奥氏体含量最低,外圆面和端面的奥氏体体积分数分别为1.34%,2.65%,显微硬度最高,外圆面和端面的硬度分别为1036,1009 HV,该喷丸工艺对挺柱表层的强化作用最佳。Taking steel shot with diameter of 0.3 mm,ceramic shot with diameter of 0.1 mm and glass shot with diameter of 0.1 mm as shots,X210CrW12 steel tappet with overall nitriding was subjected to microparticle shot peening by using glass shot(shot peening intensity of 0.07 mm,measured by A test piece,the same as below),ceramic shot(shot peening intensity of 0.15 mm)+glass shot(shot peening intensity of 0.07 mm),and steel shot(shot peening intensity of 0.30 mm)+ceramic shot(shot peening intensity of 0.15 mm)+glass shot(shot peening intensity of 0.07 mm).The surface morphology,surface roughness,residual stress,residual austenite content and microhardness of the tappet after different process shot peening were studied.The results show that the shot peening had little effect on the surface roughness of nitrided X210CrW12 steel tappet,but could increase the value and depth of residual compressive stress and hardness of the surface and reduce the residual austenite content.After shot peening with a single type of glass shot,the tappet surface layer had relatively low and shallow-distributed residual compressive stress,the relatively high austenite content and the relatively low hardness.Compared with those after shot-peening with a single type of glass shot,after shot peening with ceramic shot+glass shot,the residual compressive stress and its layer depth and hardness increased,and the residual austenite content decreased.After shot peening with steel shot+ceramic shot+glass shot,the surface residual compressive stress was the largest,with the residual compressive stress on the outer circular surface and the end face of 1180,1238 MPa,respectively,and the residual compressive stress layer depth was more than 200μm;the residual austenite content was the lowest,with the austenite volume fraction on the outer circular surface and the end face of 1.34%,2.65%,respectively;the microhardness was the highest,with the hardness on the outer circular surface and the end face of 1036,1009 HV,respectively;this shot-peening process had th

关 键 词：渗氮X210CrW12钢挺柱 微粒子喷丸 残余应力 奥氏体含量 硬度 

分 类 号：TG146.1[一般工业技术—材料科学与工程]