曲轴轴颈损伤表面的激光熔覆再制造修复研究  

Study on Laser Cladding Remanufacturing Repair of Damaged Surface of Crankshaft Journal

作　　者：景奉全 景朔 JING Fengquan;JING Shuo(Shandong Buluoer Intelligent Technology Co.,Ltd.,Jinan 250200)

机构地区：[1]山东布洛尔智能科技有限公司,济南250200

出　　处：《现代制造技术与装备》2021年第7期182-183,共2页Modern Manufacturing Technology and Equipment

摘　　要：要对发动机曲轴的激光熔覆进行再制造修复,可以在曲轴材料钢样板表面制备铁基激光熔覆层方面应用激光熔覆技术,结合熔覆层自身的性能,通过光学显微镜和显微硬度计实施熔覆层金相组织观察和硬度测试工作。相关试验结果表明,熔覆层和基体之间结合性能极佳,熔覆层硬度是基体硬度的3倍左右。同时,要使曲轴基于绕主轴径旋转现状下实施多拐曲轴连杆轴径激光熔覆作业,需要掌握好连杆轴径表面获取连续均匀熔覆层应当符合的基本要点,在满足基本要求的同时,提出激光束和转动轴径的运动轨迹以及相对速度之间的关系模型,并采取试验方式验证轨迹模型的可行性。In order to remanufacture and repair the engine crankshaft by laser cladding,we can apply laser cladding technology to prepare iron-based laser cladding layer on the surface of crankshaft material steel template.Combined with the performance of the cladding layer itself,we can observe the microstructure and test the hardness of the cladding layer by optical microscope and microhardness tester,The hardness of the cladding layer is about three times that of the substrate.At the same time,in order to make the crankshaft rotate around the main shaft diameter,it is necessary to master the basic points of obtaining continuous and uniform cladding layer on the surface of the connecting rod shaft diameter,and put forward the relationship model between the laser beam and the rotating shaft diameter and the relative velocity,The feasibility of the trajectory model is demonstrated by experiments.

关 键 词：曲轴轴径损伤表面 激光熔覆 再制造修复 

分 类 号：TG665[金属学及工艺—金属切削加工及机床] TK403[动力工程及工程热物理—动力机械及工程]