中国机械工程2024，Vol.35Issue(3)：394-404,11.DOI:10.3969/j.issn.1004-132X.2024.03.002
含Ni量、渗氮层深度及喷丸强化对42CrMo齿轮弯曲疲劳性能影响研究
Study on Influences of Ni Content,Nitriding Hardening Depth,and Shot Peening on Bending Fatigue Performance of 42CrMo Gears
摘要
Abstract
Single tooth bending fatigue tests were conducted on 42CrMo gears with different com-binations of Ni content,nitriding hardening depth,and shot peening.The effectiveness of different process combinations on improving the bending fatigue limit of gears was investigated,providing process guidance for gear fatigue resistance manufacturing.Additionally,the contribution of surface hardness,nitriding hardening depth,surface residual stress,and Ni content to the bending fatigue limit of gears with different process combinations was analyzed using the random forest algorithm.A multiple regression model considering surface hardness,nitriding hardening depth,surface residual stress,and Ni content was established to predict the bending fatigue limit of gears.Comparing the predicted values with experimental values,the maximum error is controlled within 7.80％,providing a theoretical basis for the rapid and low-cost assessment of gear bending fatigue limit in engineering applications.关键词
弯曲疲劳/含镍量/渗氮层深度/喷丸/疲劳极限预测Key words
bending fatigue/Ni content/nitriding hardening depth/shot peening/fatigue limit prediction分类
机械制造引用本文复制引用
武忠睿,陈地发,吴吉展,杨玉典,刘怀举..含Ni量、渗氮层深度及喷丸强化对42CrMo齿轮弯曲疲劳性能影响研究[J].中国机械工程,2024,35(3):394-404,11.基金项目
国家重点研发计划(2022YFB3402801) （2022YFB3402801）
重庆市杰出青年科学基金(CSTB2023NSCQ-JQX0016) （CSTB2023NSCQ-JQX0016）
