激光熔覆技术在轴类零件再制造过程中的应用现状

Applications of Laser Cladding Technique in Remanufacturing of Shaft Parts

轴类零件在服役过程中易发生摩擦磨损、腐蚀及疲劳等失效,严重影响工程机械装备的正常运行。激光熔覆技术作为轴类零件修复和再制造常用的技术,可有效延长其使用寿命。概述了激光熔覆技术在轴类零件再制造上的应用,重点介绍了激光熔覆工艺参数(激光功率、熔覆速度、搭接率、送粉量等)和熔覆材料选取对轴类零件再修复性能的影响以及仿真模拟软件的辅助应用,并对激光熔覆再制造技术的发展趋势进行了展望。

Shaft parts are prone to failing such as friction,wear,corrosion and fatigue during service,which seriously affect the normal operation of construction machinery equipment.Laser cladding technique,as a common technical means for repairing and remanufacturing shaft parts,can effectively extend service lives of parts.The application of laser cladding technique in the remanufacturing of shaft parts is summarized.The influence of laser cladding process parameters(laser power,cladding speed,overlap rate and powder feeding amount)and cladding material selection on the repairing performance of shaft parts and the auxiliary application of simulation software are focused on.The development trend of laser cladding remanufacturing technique is prospected.