重庆理工大学学报2024，Vol.38Issue(13)：194-203,10.DOI:10.3969/j.issn.1674-8425(z).2024.07.025
9310航空齿轮真空渗碳热处理表面强化数值模拟及工艺参数优化
Numerical simulation and process parameter optimization of surface strengthening for 9310 aviation gear vacuum carburization heat treatment
摘要
Abstract
To improve the fatigue performance of aviation gears,the 9310 aviation gears are strengthened by the vacuum carburizing heat treatment technology.The carbon concentration distribution and depth of the carburized layer on the surface are predicted by employing finite element simulation analysis method.The vacuum carburizing process parameters are optimized based on orthogonal experimental method,and finally the gear vacuum carburizing test is conducted.Our test obtains the optimal optimization process parameter with a carburizing temperature of 960℃and the carbon concentration on the tooth surface at the beginning and end of the strong carburizing pulse reaches 0.84%and 1.80%respectively.After carburizing,the tooth surface is needle-like martensite in microstructure whereas the core is mainly lath-like martensite and some residual austenite in microstructure.The maximum hardness of the surface is 740HV while the maximum hardness of the core is 402HV.Our optimized process parameters effectively improve the depth of the carburized layer and the standard point carbon concentration.Compared with the pre-optimization carburized layer standard point carbon concentration,the optimized process parameters increase the standard point carbon concentration by 21.2%.关键词
9310航空齿轮/真空渗碳/碳浓度/有效渗碳层/工艺参数优化Key words
9310 aviation gears/vacuum carburizing/carbon concentration/effective carburizing layer/process parameter optimization分类
矿业与冶金引用本文复制引用
张治中,张银,胡云波,刘洲成..9310航空齿轮真空渗碳热处理表面强化数值模拟及工艺参数优化[J].重庆理工大学学报,2024,38(13):194-203,10.基金项目
国家自然科学基金项目(52075552) （52075552）
