摘要
齿轮及其传动装置是现代机械装备的核心基础零部件,齿轮残余应力分布状态是影响其服役寿命的重要因素。文章以18CrNiMo7-6渗碳钢为研究对象,采用数值模拟与试验研究相结合的方法,研究了静压力、超声振幅和超声频率等超声滚压强化加工参数对试样表面残余应力的影响。结果表明超声滚压强化加工有效地改善了18CrNiMo7-6渗碳钢试样表面的残余应力,且随着静压力和超声振幅的增加,18CrNiMo7-6渗碳钢试样表面残余压应力、最大残余压应力和残余压应力场深度均得到显著提高。
Gears and their transmission devices are the core basic components of modern mechanical equipment,and the residual stress distribution state of gears is an important factor affecting their service life.Taking 18CrNiMo7-6 carburized steel as the research object,the influence of ultrasonic rolling strengthening processing parameters such as static pressure,ultrasonic amplitude and ultrasonic frequency on the residual stress of the specimen surface was studied by combining numerical simulation and experimental research.The results show that ultrasonic rolling strengthening effectively improves the residual stress on the surface of 18CrNiMo7-6 carburized steel,and with the increase of static pressure and ultrasonic amplitude,the residual compressive stress,maximum residual compressive stress and residual compressive stress layer thickness of 18CrNiMo7-6 carburized steel specimen are significantly improved.
作者
吴鲁纪
吕永鑫
张亚龙
WU Luji;LV Yongxin;ZHANG Yalong(Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,CHN;School ofMechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,CHN)
出处
《制造技术与机床》
北大核心
2023年第9期34-38,51,共6页
Manufacturing Technology & Machine Tool
基金
齿轮表面超声滚压改性层形成机制及寿命保障方法研究,中国博士后科学基金(2022M702920)。
