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| 球铁曲轴激光淬火强化技术研究 | |
| 引用本文： | 周建忠,花银群,杨继昌,张永康.球铁曲轴激光淬火强化技术研究[J].农业机械学报,2001,32(3):109-112. |
| 作者姓名： | 周建忠 花银群 杨继昌 张永康 |
| 作者单位： | 1. 江苏理工大学机械工程学院副教授, 2. 江苏理工大学机械工程学院副教授 3. 江苏理工大学机械工程学院教授博士生导师 4. 江苏理工大学激光技术研究所教授博士生导师 |
| 基金项目： | 江苏省应用基金资助项目! (项目编号 :BJ980 11) |
| 摘 要： | 介绍了曲轴激光淬火强化系统，采用千瓦级快速轴流激光器对球铁曲轴进行激光淬火强化试验，探讨了曲轴激光淬火强化时轴颈和圆角的激光扫描轨迹方式、功率密度及扫描速度等工艺参数对球铁激光强化性能的影响，指出了曲轴激光强化工程应用所要解决的主要问题。研究结果表明，球铁曲轴经激光淬火强化后，能获得较高的表面硬度和残余压应力，因而能有效的提高和改善曲轴的使用寿命。 |
| 关 键 词： | 激光淬火 球墨铸铁 曲轴 硬度 寿命 强化技术 |
Study on the Laser Hardening Technology for a Crankshaft of Nodular Iron |
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| Zhou Jianzhong,Hua Yinqun,Yang Jichang,Zhang Yongkang.Study on the Laser Hardening Technology for a Crankshaft of Nodular Iron[J].Transactions of the Chinese Society of Agricultural Machinery,2001,32(3):109-112. | |
| Authors: | Zhou Jianzhong Hua Yinqun Yang Jichang Zhang Yongkang |
| Institution: | Jiangsu University of Science and Technology |
| Abstract: | The laser hardening system which used for crankshafts was introduced, and the investigation on the surface hardening of a nodular iron crankshaft was carried out by using a kW CO 2 laser system. The key technologies, mechanism of strengthening, laser processes, as well as laser beam scanning pattern were analyzed. The effects of laser hardening processing parameters,such as power density, scanning speed, etc. on the properties of nodular iron hardening were studied. The results showed that under the condition of optimum process, high hardness and residual compressive stresses at the specimen surface were obtained so that the fatigue life of crankshafts could be improved. Finally, the key problem that affected engineering application of laser hardening for crankshafts was indicated. |
| Keywords: | Laser hardening Nodular iron Crankshaft Hardness Life |
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