激光熔覆工艺修复轧辊技术研究

近年来,激光表面处理技术在轧辊表面处理上应用广泛,文中以轧辊为主要对象,研究激光熔覆工艺在棒材轧辊表面的应用,并对激光熔覆工艺参数进行了讨论。针对激光修复轧辊加工过程中,熔覆质量难以控制的问题,采用改变激光功率、扫描速度、送粉率等激光熔覆工艺参数的方法,通过试验得出工艺参数在激光功率3.7 kW、扫描速度6 mm·s^-1、送粉量19 g·min^-1、搭接系数在40%时,激光的熔覆效果最好。对修复好的轧辊跟踪作业,单槽轧钢量较熔覆前提高了近1倍,经济效益可观。

Research of Laser Cladding Repairing Technology of Roller

In recent years,application of laser surface treatment technology on the roller surface treatment widely,the main object of this paper is roll,research on laser cladding technology used in bar roll surface,and the laser cladding process parameters are explored.For the laser repair roll processing process,it is difficult to control the cladding quality problem,by changing the laser power,scanning speed,powder feed rate parameters of laser cladding method,through experiments the process parameters in laser power 3.7 kW,scanning speed,powder feed rate of 6 mm·s^-1 19 g·min^-1,the overlapping coefficient in 40%,the best fusion effect of laser cladding,the final tracking operations on roller repairing is well,single groove rolling cladding before the amount is increased nearly 1 times,it creates considerable economic benefits for the enterprise.