高压节流阀的冲蚀磨损机理及其激光熔覆再制造  

Erosion Wear Mechanism and Laser Cladding Remanufacturing of High-pressure Throttle Valves

作　　者：薄纪康[1] 

机构地区：[1]宁波职业技术学院,宁波315800

出　　处：《中国机械工程》2015年第2期255-259,共5页China Mechanical Engineering

基　　金：工业及信息化部2011年国家重大科技成果转化项目(财建[2011]329号);浙江省高职(高专)专业带头人培养计划资助项目(浙教高科[2007]209号)

摘　　要：为获取高压节流阀的冲蚀磨损机理并解决其现场应用中的阀芯局部损伤修复问题,进行了高压节流阀的冲蚀磨损试验。在分析冲蚀磨损现象和形貌的基础上,提出了高压节流阀阀芯的冲蚀磨损机理。为恢复高压节流阀阀芯的服役性能,采用铁基合金粉末进行了阀芯的激光熔覆再制造,恢复了阀芯的形状尺寸。再制造阀芯的冲蚀磨损试验结果表明,激光熔覆再制造可恢复高压节流阀的服役性能。To solve the problem of erosion wear mechanism and the partial damage repair problems of the valve core in the application of high-pressure throttle valves,this paper performed erosion wear experiments of a high-pressure throttle valve.The erosion wear mechanism of the valve core was pres-ented based on the analysis of erosion phenomena and pattern.To recover the service performance of high-pressure throttle valve,laser cladding remanufacturing of the valve core was conducted by using ferroalloy powder,and the shape and size of the valve core was restored.The erosion wear experiments of the remanufactured high-pressure throttle valve were performed,and the experimental results show that laser cladding remanufacturing can restore the service performance of the high-pressure throttle valve.

关 键 词：高压节流阀 冲蚀磨损 激光熔覆再制造 铁基合金粉末 

分 类 号：TH137.5[机械工程—机械制造及自动化]