基于ANSYS的18CrNi8齿轮激光淬火温度场分析  

Temperature Field Analysis of Laser Hardening of 18CrNi8 Gear based on ANSYS

作　　者：惠英龙 王玉玲[1] 姚翠翠[1] 

机构地区：[1]青岛理工大学机械工程学院,山东青岛266033

出　　处：《机械传动》2015年第1期102-105,134,共5页Journal of Mechanical Transmission

基　　金：山东省自然科学基金(ZR2009FM066);山东省高等学校科技计划项目(J12LB07)

摘　　要：针对重载汽车大模数齿轮的表面激光淬火工序,进行ANSYS有限元温度场分析。主要有三维模型的建立、载荷的施加方法、移动热源命令流编写、纵切面温度分布处理、硬化层深度确定等。综合应用ANSYS的后处理方法,分析了加工中热流的流动情况、热源扫描路线表面的代表性节点和沿深度方向节点的温度变化、以及激光光斑前后表面温度差别较大的原因(暂称为"热流堆积效应")及解决方案。分析结果表明对齿轮齿面进行激光淬火可以达到较好效果,并通过试验验证了模拟结论。An ANSYS finite element analysis of temperature field is carried out aiming at laser quenching process of a large modulus gear used in the overloading car, which involve the establishment of 3D model, load method, command flow of moving heat source , longitudinal section temperature dis- tribution , determination of the hardening layer depth. According to ANSYS Post--processing meth- ods, the case of heat flow in the processing, the temperature variation of typical nodes along the scan ning line of the heat source and the depth direction as well as the cause and the solution of the widely different temperature between the surface before and after the laser speckle （which is caused momenta rily ＂ heat flux accumulation effect＂ ） are analyzed. The analysis results show that laser quenching on the gear tooth surface can achieve good effect, which is validated by the experiment.

关 键 词：齿轮 激光淬火 移动热源 热流堆积效应 

分 类 号：TG156.3[金属学及工艺—热处理]