End-quenching experimental curves and simulation calculation of 18CrNiMo7-6 steel for high-speed railway gears

doi:10.13251/j.issn.0254-6051.2022.12.040

Abstract

Abstract: Three prediction models were used to calculate and predict the end-quenching curves of two batches of 18CrNiMo7-6 steel for high-speed railway gears, and then the prediction errors of different models were analyzed by comparing with the end-quenching test results. The results show that the Jin model obtains small error compared with the end-quenching test results, and can be used to predict the end-quenching curves of the tested steels. According to the comparative analysis of the predicted and the measured results of the end-quenching test, and combing with the hardness specification for technical conditions of the high-speed railway gear steels, the controlling method of the smelting composition of 18CrNiMo7-6 steel for high-speed railway gears is proposed.

Key words: high-speed railway gear steel 18CrNiMo7-6, end-quenching curve, chemical composition

CLC Number:

Zhu Yuefeng, Gu Jialin, Zhou Huihua, Wang Zhixiang, Zhang Jinwen. End-quenching experimental curves and simulation calculation of 18CrNiMo7-6 steel for high-speed railway gears[J]. Heat Treatment of Metals, 2022, 47(12): 237-243.

References

[1]张贵. 我国齿轮钢生产技术发展状况[J]. 工业加热, 2015, 44(5): 46-48.
Zhang Gui. The status of technical development of gear steel production in China[J]. Industrial Heating, 2015, 44(5): 46-48.
[2]常曙光. 中国齿轮用钢合金化体系的选用及淬透能力的构成[J]. 金属加工(热加工), 2008(17): 18-20.
Chang Shuguang. Selection of alloying system and composition of hardening capacity for gear steels in China[J]. Metal Processing (Hot Processing), 2008(17): 18-20.
[3]刘锟, 刘浏, 何平, 等. 齿轮钢窄淬透性带控制技术[J]. 钢铁, 2015, 50(3): 73-77.
Liu Kun, Liu Liu, He Ping, et al. Investigation on control technology of narrow hardenability band for gear steel[J]. Iron and Steel, 2015, 50(3): 73-77.
[4]李宝奎, 范乃则, 田华军, 等. 地铁驱动齿轮渗碳淬火畸变控制及性能[J]. 金属热处理, 2017, 42(3): 72-75.
Li Baokui, Fan Naize, Tian Huajun, et al. Distortion control and properties of subway drive gear after carburizing and quenching[J]. Heat Treatment of Metals, 2017, 42(3): 72-75.
[5]张明皓, 韩颢源, 徐跃明, 等. 真空渗碳18CrNiMo7-6钢中碳化物的析出规律[J]. 金属热处理, 2022, 47(5): 171-176.
Zhang Minghao, Han Haoyuan, Xu Yueming, et al. Carbide precipitation law in vacuum carburized 18CrNiMo7-6 steel[J]. Heat Treatment of Metals, 2022, 47(5): 171-176.
[6]胡芳忠, 杨少朋, 金国忠, 等. 淬火温度对Nb微合金化齿轮钢18CrNiMo7-6组织演变及力学性能的影响[J]. 金属热处理, 2022, 47(2): 105-112.
Hu Fangzhong, Yang Shaopeng, Jin Guozhong, et al. Effect of quenching temperature on microstructure evolution and mechanical properties of Nb microalloyed gear steel 18CrNiMo7-6[J]. Heat Treatment of Metals, 2022, 47(2): 105-112.
[7]张宁, 高星, 王芝林, 等. 18CrNiMo7-6钢齿轮组织性能异常分析[J]. 金属热处理, 2022, 47(4): 268-274.
Zhang Ning, Gao Xing, Wang Zhilin, et al. Analysis of abnormal microstructure and properties of 18CrNiMo7-6 steel gear[J]. Heat Treatment of Metals, 2022, 47(4): 268-274.
[8]Grossmann M A. Hardenability calculated from chemical composition[J]. Transactions of the American Institute of Mining and Metallurgical Engineers, 1942, 150: 227-255.
[9]余柏海. 计算淬透性及机械性能的非线性方程[J]. 钢铁, 1985, 20(3): 40-49.
Yu Baihai. Nonlinear equations for calculating hardenability and mechanical property[J]. Iron and Steel, 1985, 20(3): 40-49.
[10]金满, 连建设, 江中浩. 结构钢端淬曲线预测新方法[J]. 金属学报, 2006, 42(4): 405-410.
Jin Man, Lian Jianshe, Jiang Zhonghao. A new method for prediction of Jominy curve of structural steel[J]. Acta Metallurgica Sinica, 2006, 42(4): 405-410.
[11]郭艺勇. 齿轮钢淬透性预报及质量控制研究[D]. 沈阳: 东北大学, 2008.
Guo Yiyong. Study on hardenability prediction of gear steel and quality control[D]. Shenyang: Northeastern University, 2008.
[12]徐兴田, 孙小雨, 李长宏. 基于GRNN神经网络的SAE8620汽车齿轮钢淬透性预测[J]. 云南冶金, 2020, 49(5): 108-112.
Xu Xingtian, Sun Xiaoyu, Li Changhong. The hardenability prediction for SAE8620H automobile gear steel based on GRNN neural network[J]. Yunnan Metallurgy, 2020, 49(5): 108-112.
[13]黄群超, 卢文壮, 李鹏程, 等. 18CrNiMo7-6齿轮钢淬火精确数值模拟[J]. 金属热处理, 2014, 39(2): 125-128.
Huang Qunchao, Lu Wenzhuang, Li Pengcheng, et al. Accurate numerical simulation of quenching process of 18CrNiMo7-6 gear steel[J]. Heat Treatment of Metals, 2014, 39(2): 125-128.