高功率密度柴油机缸套激光渗硫复合处理技术研究  

Investigation of Laser Quenching and Ion Sulphidizing Complex Treatment Technology for Cylinder of High Power Engine

作　　者：蔡志海[1] 曾庆强[1] 赵军军[1] 张平[1] 

机构地区：[1]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072

出　　处：《中国表面工程》2009年第5期75-78,84,共5页China Surface Engineering

基　　金：装备再制造技术国防科技重点实验室预研基金资助(9140C8502070703)

摘　　要：为提高大功率密度柴油机缸套的抗高温粘着磨损性能,文中采用高能量密度的激光束对柴油机缸套内壁进行网格化淬火处理,然后用低温离子渗硫技术在缸套内壁外层生成固体润滑的FeS相。采用扫描电子显微镜、能谱仪、X射线衍射仪、显微硬度计等分析设备对缸套内壁的强化层进行表征分析,采用T11高温摩擦磨损试验机对处理前后缸套内壁的抗高温磨损性能进行了比较研究,研究结果表明:缸套内壁经过激光渗硫复合处理后,抗高温粘着性能大大提高,同时渗硫层能够防止发动机刚启动时机油润滑不良导致的异常磨损和改善摩擦副之间的润滑效果。探讨了缸套内壁复合处理强化前后的摩擦磨损失效机理。The laser quenching and ion sulphidizing complex treatment technology were operated on the cylinder wall surface of high power disel engine to decrease the wear of both ring and cylinder and increase the service life for cylinder. The structure, composition, surface morphology, hardness and tribological properties at high temperature of the composite coatings are tested by XRD, EDS, SEM, hardness tester and T11 tribological tester, respectively. The experimental results show that the wear resist ability was improved obviously after the complex treatment of laser quenching and ion sulphidizing. And the sulphidized coatings can improve the lubrication effects and can protect the ahnormity wear when the oil was deficiency at the time of start-up. The wear mechanisms of the composite coatings for the cylinder wall were discussed.

关 键 词：气缸套 激光网格化 渗硫 复合处理 摩擦学性能 

分 类 号：TG45[金属学及工艺—焊接]