摘要
以20CrMoH钢重载行星齿轮为研究对象,利用Abaqus有限元软件及其二次开发功能,建立多场耦合渗碳淬火有限元模型并进行了验证,采用该模型对渗碳淬火(碳势1%,渗碳温度880℃,淬火油温度110℃)时齿轮残余应力、硬度、碳含量、物相以及变形量分布进行预测和分析。结果表明:渗碳淬火后齿轮的残余应力和硬度模拟结果与测试结果的相对误差均在10%以内,证明建立的多场耦合渗碳淬火有限元模型可靠;渗碳淬火后齿轮表面轴向应力为残余拉应力,约为430 MPa,心部为残余压应力,约为126 MPa;碳含量自表面向心部逐渐降低,渗碳层深度约为1.1 mm;齿轮自表面至心部的马氏体含量均最高,表面马氏体体积分数接近100%;渗碳淬火过程中,齿轮x,y,z方向变形量变化趋于一致,在齿轮完全奥氏体化且温度达到880℃时,变形量达到最大,x,y,z方向分别约为0.239,0.025,0.206 mm,渗碳淬火结束后,x,y,z方向变形量分别约为0.117,0.017,0.089 mm。
With the heavy-load planetary gear made of 20CrMoH steel as the research object,and was verified a multi-field coupled carburizing and quenching finite element model was established by using the Abaqus finite element software and its secondary development functions.The residual stress,hardness,carbon content,phase composition and deformation amount distribution of the gears in carburizing and quenching(carbon potential of 1%,carburizing temperature of 880℃,quenching oil temperature of 110℃)was predicted and analyzed.The results show that the relative errors of residual stress and hardness simulation with the test results of the gear after carbonizing quenching were all within 10%,proving that the established multi-field coupled carbonizing and quenching finite element model was reliable.The axial stress on the surface of the gear was residual tensile stress,approximately 430 MPa,and that of the core part was residual compressive stress,approximately 126 MPa.The carbon content of the gear gradually decreased from the surface to the core,and the depth of the carbonizing layer was approximately 1.1 mm.The martensite content from surface to core in the gear was the highest,and the volume fraction of martensite on the surface was close to 100%.During the carbonizing and quenching process,the deformation amounts in the x,y,and z directions of the gear tended to be consistent.The deformation amount reached the maximum when the gear was completely austenitized and the temperature reached 880℃,which were approximately 0.239,0.025,0.206 mm in x,y,z directions.After carbonizing and quenching was completed,the deformation amounts in x,y,z directions were approximately 0.117,0.017,0.089 mm.
作者
于津伟
汪舟
马蓉
王晓丽
林博
汤盈
刘家文
赵圆圆
冯祎彤
李柳全
YU Jinwei;WANG Zhou;MA Rong;WANG Xiaoli;LIN Bo;TANG Ying;LIU Jiawen;ZHAO Yuanyuan;FENG Yitong;LI Liuquan(School of Automotive Engineering,Wuhan University of Technology,Wuhan,430070,China;Hubei Key Laboratory of Advanced Technology for Automotive Components,Wuhan University of Technology,Wuhan 430070,China;School of Smart Transportation,Xinjiang Vocational University,Urumqi 830013,China;Guangxi Liugong Machinery Co.,Ltd.,Liuzhou 545007,China)
出处
《机械工程材料》
北大核心
2025年第7期64-73,共10页
Materials For Mechanical Engineering
基金
装载机铲斗主切削刃热处理模拟仿真与工艺参数优化资助项目(LGC-22-068)
新疆职业大学校内科研课题资助项目(XJZD24ZKZ01)。
关键词
重载行星齿轮
渗碳淬火
有限元仿真
相变模拟二次开发
heavy-load planetary gear
carburizing and quenching
finite element simulation
secondary development of transformation simulation
