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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 20CrMnTi gear, the mathematical model of gear carburization was established, and the reliability of the computer simulation was verified by chemical peel method. Three kinds of carburized test Effect of Methods on Carburizing Results of 20CrMnTi. The results show that the calculated values of carbon concentration distribution in carburized layer obtained by the calculation model are in good agreement with the measured values, and the error between the two is within 5%. This indicates that the calculation model can effectively simulate the carburizing process of 20CrMnTi gears. , The effective hardening layer method and chemical peel layer depth measurements of carburized layer, the effective depth of the hardened layer method to determine the minimum, followed by the metallographic method, and the chemical peel the maximum depth measured; effective hardened layer at 2.1 mm The corresponding chemical peel method has a carbon content of 0.36%, which is in good agreement with the calculated simulation results, which verifies the accuracy of the carburizing calculation model.