| 激光冲击处理对柴油机曲轴圆角残余应力影响 |
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| 引用本文： | 杨兴华,汤小东,薛茂权.激光冲击处理对柴油机曲轴圆角残余应力影响[J].激光技术,2010,34(5):596-599. |
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| 作者姓名： | 杨兴华 汤小东 薛茂权 |
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| 作者单位： | 1.江苏大学, 机械工程学院, 镇江, 212013; |
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| 基金项目： | 常州市科技攻关计划资助项目，江苏省高校科研成果产业化推进工程资助项目 |
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| 摘 要： | 为了研究激光冲击处理对曲轴连杆轴颈圆角残余应力的影响,采用激光冲击波对曲轴连杆轴颈圆角进行了强化处理,通过X射线衍射法测试了圆角处残余应力的分布规律,对其产生机理进行了分析,研究了激光冲击处理对抗疲劳和磨损性能的影响。结果表明,激光冲击处理后曲轴圆角表面硬度达到了600HV以上,冲击区表层残余压应力达到320MPa。这有利于提高曲轴的磨损性能和疲劳寿命。
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| 关 键 词： | 激光技术 激光冲击处理 曲轴圆角 残余应力 |
| 收稿时间： | 2009-10-29 |
| 修稿时间： | 2009-11-12 |
The mechanism of laser shock processing on residual stresses of crankshaft-connecting rod journal chamfer |
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| YANG Xing-hua,TANG Xiao-dong,XUE Mao-quan.The mechanism of laser shock processing on residual stresses of crankshaft-connecting rod journal chamfer[J].Laser Technology,2010,34(5):596-599. |
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| Authors: | YANG Xing-hua TANG Xiao-dong XUE Mao-quan |
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| Abstract: | The surface of crankshaft-connecting rod journal chamfer was processed by laser shock processing, the residual stress distributions of the chamfer were measured with X-ray diffraction method, and the production mechanism of residual stress was analyzed, the effects of laser shock processing on resistance fatigue and resistance wear were investigated. The results shown that micro-hardness of crankshaft-connecting rod journal chamfer by laser shock processing is above 600HV, and compressive residual stress in the shocked zone is attained 320MPa, which is benefit to increase its resistance wear and fatigue life. |
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| Keywords: | laser shock processing |
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