| 桑车20MnCr5钢主动轴螺旋齿断裂分析 |
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| 引用本文： | 孔铭.桑车20MnCr5钢主动轴螺旋齿断裂分析[J].热处理,2006,21(4):58-60. |
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| 作者姓名： | 孔铭 |
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| 作者单位： | 上海汽车股份有限公司汽车齿轮总厂,上海,201822 |
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| 摘 要： | 某大众试验车行驶8．6万公里后其主动轴螺旋齿断裂。采用宏观检验、金相分析、化学成分分析、应力测试等手段对失效件取样分析，结果表明，螺旋齿断裂是由于轴向定位松动，造成齿轮局部受力集中，在疲劳源基础上发展成裂纹，裂纹进一步扩展导致断裂。
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| 关 键 词： | 20MnCr5钢 裂纹 疲劳 轴向定位 |
| 文章编号： | 1008-1690（2006）04-0058-003 |
| 收稿时间： | 2006-02-06 |
| 修稿时间： | 2006年2月6日 |
Analysis on Fracture of Drive Shaft Spiral Tooth of 20MnCr5 Steel for the Santana Car |
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| KONG Ming.Analysis on Fracture of Drive Shaft Spiral Tooth of 20MnCr5 Steel for the Santana Car[J].Heat Treatment,2006,21(4):58-60. |
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| Authors: | KONG Ming |
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| Affiliation: | Automobile Glear Works, Shanghai Automotive Co., Ltd., Shanghai 201822 |
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| Abstract: | After a tested Santana Car ran over 86000krn its drive shaft skew tooth broke. An investigation on the broke part by the use of macroscopic inspection, metallographic examination, chemical analysis and stress detection revealed the reason that axial direction of the drive shaft had become less crowded, consequently external force had been concentrated on some areas of the spiral bevel gear and fatigue source had extended and had become crack and finally broken. |
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| Keywords: | 20MnCr5 steel crack fatigue axial location |
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