摘要
采用有限元模型对20CrMnTi齿轮的渗碳过程进行了计算机模拟,建立了齿轮渗碳过程的数学模型,并通过化学剥层法验证了计算机模拟结果的可靠性,对比分析了3种渗碳层测试方法对20CrMnTi渗碳结果的影响。结果表明,采用计算模型得到的渗碳层碳浓度分布计算值与实测值非常吻合,二者之间的误差在5%范围内,表明计算模型可以对20CrMnTi齿轮的渗碳过程进行有效模拟;金相法、有效硬化层法和化学剥层法的渗碳层深度测量结果中,有效硬化层法测得的深度最小,其次为金相法,而化学剥层法测得的深度最大;有效硬化层2.1 mm处对应的化学剥层法测得的含碳量为0.36%,与计算模拟结果非常吻合,验证了渗碳计算模型的准确性。
The finite element model was used to simulate the carburizing process of 20 CrMnTi gear, a mathematical model of gear carburizing process was established, and the reliability of simulation results was verified through chemical stripping method, the effect of the three kinds of test methods on 20 CrMnTi carburized gear carburizing results was comparatively analyzed. The results show that the calculation model of the carbon concentration values in carburized layer is in good agree with the measured values, the error between them is in the range of 5%, which shows that the calculation model can effectively simulate the carburizing process of 20 CrMnTi gear. The measuring results of carburized layer by metallography method, effective hardening method and chemical stripping method show that the depth of hardening layer obtained by effective hardening layer method is minimum, and the measured results by chemical stripping method is the largest. The measured carbon content in the hardening layer 2.1 mm from chemical stripping method is 0.36%, which is very good agree with the simulation results, and the accuracy of the calculation model is verified.
出处
《铸造技术》
北大核心
2017年第5期1047-1050,共4页
Foundry Technology
作者简介
吉燕荣（1982-），女，内蒙古呼和浩特人，讲师．研究方向：计算机模拟与仿真．电话：15391169001．E-mail：412487897@qq．com
