利用激光清洗技术对不锈钢表面进行清洗试验，研究不同激光功率(300 W、400 W、500 W)对清洗效果的影响。通过SEM和EDS分析不锈钢表面清洗前后的表面形貌及成分分布；利用白光干涉仪检测不锈钢表面粗糙度及清洗厚度。结果表明，随着激光功率的增加，不锈钢表面氧化物逐渐分解剥落，清洗厚度不断加深，在500 W时达到50 μm，并且造成基体部分损伤；粗糙度值先降低后增加，在400 W时达到最低值0.38 μm。激光清洗的清洗阈值近似为3.96×10³W/cm²，基体损伤阈值在5.52×10³W/cm²左右，不锈钢表面氧化层在400 W时达到最佳激光清洗效果。

Laser cleaning technology was used to clean the surface of stainless steel, and the influence of dif-ferent laser power (300 W, 400 W, 500 W) on cleaning effect was studied. The surface morphology and composi-tion distribution of stainless steel were analyzed by SEM and EDS. The surface roughness and cleaning thick-ness were detected by White Light Interferometer. The results show that, with the increase of laser power, the ox-ide of stainless steel decomposes and flakes gradually, and the cleaning thickness keeps deepening and reach-es 50 μm at 500 W, which causes partial damage to the matrix. The roughness value decreases firstly and then increases. It reaches a minimum value of 0.38 μm at 400 W. Laser cleaning threshold is approximately 3.96×10³W/cm², and damage threshold is about 5.52×10³W/cm². The best laser cleaning effect of stainless steel is ob-tained when the power is 400 W.