采用光纤激光器在不锈钢表面进行侧向送丝熔覆修复实验，系统地研究了激光工艺参数对熔覆道形貌影响并确定合适的多道搭接率取值范围，为多道多层送丝激光熔覆修复技术应用提供指导。结果表明：影响熔覆道宏观成形和形貌参数的激光工艺参数主要有激光功率、扫描速度和送丝速度，离焦量的影响相对较小，当激光能量密度为100 J/mm2，熔丝率为39.44×10-6 g/J时，可得到稳定平滑的熔覆道；合适的搭接率变化范围为45%~53%，此时多道单层熔覆层表面平整度在100 μm以下。

Fiber laser cladding repairing is performed on the surface of stainless steel with wire feeding. The effects of laser process parameters on the cladding track geometry are studied. In order to apply on multi-track and multi-layer cladding repairing practice, the best range of overlapping rate is also investigated. The results show that the laser cladding track geometry is mainly attributed to laser power, scanning speed and wire feeding speed, while defocusing distance has relatively small effect on the formation and geometry of cladding track. When the laser energy density is 100 J/mm2 and the wire fusion rate is 39.44×10-6 g/J, the stable and smooth cladding track is obtained. When the overlapping rate varies from 45 % to 53 %, the values of multi-track single-layer cladding surface smoothness are 100 μm or less.