某重型车辆侧减速器主动齿轮在使用过程中因严重的点蚀与剥落而早期失效.通过化学成分检验、硬度检测、断口分析和金相分析等方法研究该齿轮的失效机理,并采用有限元建模进行失效齿轮的接触应力分析.分析结果证明渗碳层中存在白色网状碳化物、渗碳层深度不足以及齿轮接触应力较大是造成失效齿轮接触疲劳的主要原因.
Early failure due to pitting and spalling occurred in the master gear of the side-reducer of a certain heavy vehicle. The failure mechanism was studied by means of chemical composition analysis, hardness test, fracture surface analysis and metallographic examination. Contact stress analysis of the gear was also done by the finite element method. Result shows that the existence of carbide network microstructure in the carburized layer, the shallow depth of carburized layer and high contact stress are the primary causes leading to contact fatigue failure of the gear.
参考文献
| [1] | 郭秀文;栾复信;李和歧.金相技术问答[M].北京:国防工业出版社,1987:361-363. |
| [2] | 韩文政;谭俊;姜温厚 .坦克金属材料及热处理[D].北京:中国人民解放军装甲兵工程学院,1998. |
| [3] | 周尚臣,钟国欣,吴辉.渗碳齿轮的接触疲劳与渗碳层深度[J].一重技术,2002(04):36-38. |
| [4] | 徐滨士 等.坦克零件表面工程学[D].北京:中国人民解放军装甲兵工程学院,1991. |
| [5] | 刘家浚.材料磨损原理及其耐磨性[M].北京:清华大学出版社,1993:148-150. |
| [6] | 徐滨士;朱绍华;刘世参.表面工程与维修[M].北京:机械工业出版社,1996:188. |
| [7] | FERNANDES P J L;McDULING C .Surface contact fatigue failure in gears[J].Engineering Failure Analysis,1997,4(02):99-107. |
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