| 轴承齿圈开裂原因分析 |
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| 引用本文： | 王春亮,陈华锋,沙菲.轴承齿圈开裂原因分析[J].理化检验(物理分册),2012(7):468-471. |
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| 作者姓名： | 王春亮 陈华锋 沙菲 |
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| 作者单位： | [1]上海材料研究所,上海200437 [2]上海重型机器厂有限公司,上海200245 [3]上海市纳米技术孵化基地,上海200237 |
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| 摘 要： | 使用了约4a（年）的轴承齿圈在服役过程中发生开裂。为查明其开裂的原因，通过化学成分分析、力学性能测试、宏观及微观检验对轴承齿圈进行了分析。结果表明：轴承齿圈开裂的原因是孔内壁表面腐蚀坑处产生微裂纹，加之齿圈本身强度低于技术要求值，在交变应力的作用下发生了疲劳断裂。
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| 关 键 词： | 轴承齿圈 腐蚀 疲劳 |
Analysis on Cracking Reason of Bearing Gear Ring |
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| WANG Chun-liang,CHEN Hua-feng,SHA Fei.Analysis on Cracking Reason of Bearing Gear Ring[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2012(7):468-471. |
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| Authors: | WANG Chun-liang CHEN Hua-feng SHA Fei |
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| Affiliation: | 1. Shanghai Research Institute of Materials, Shanghai 200437, China; 2. Shanghai Heavy Machinery Plant Co. , Ltd. , Shanghai 200245, China; 3. Shanghai Nanotechnology Incubator, Shanghai 200237, China) |
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| Abstract: | A bearing gear ring was broken after using about four years. By means of chemical composition analysis, mechanical property testing, macro and micro examination, the cracking reason of the bearing gear ring was analyzed. The results showed that the microcrack was formed at the etch pit of bolt hole inner surface, and the yield strength of gear ring was lower than specification, and the alternate stresses existed in the service process which caused the fatigue failure. |
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| Keywords: | bearing gear ring corrosion fatigue |
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