激光清洗在再制造行业、微机电系统(MEMS)和超精密加工行业具有重要的应用前景。采用低频YAG脉冲激光器对FV520B基体的表面漆层进行激光除漆实验和机理研究。实验结果表明，激光除漆机制因实验条件的改变而不同。当吹氩气时，激光除漆机制主要是烧蚀效应；当采用约束层水时，激光除漆机制主要是烧蚀效应和振动效应，而且约束层水不但能提高表面漆层的去除率还能极大地提高基体的临界损伤阈值。同时实验验证了理论计算得到的搭接率的除漆效果，即在激光扫描速度为249 mm/min、扫描道间的搭接量为0.6 mm时，实现了整个漆层的完全去除，激光除漆效率达15.5 mm2/s。

Laser cleaning technology, which is environment-friendly, has a wide range of application prospects in remanufacturing, micro-electro-mechanical system (MEMS) and ultra-precision machining. The mechanism and experimental research of removing paint layer from FV520B substrate with low frequency pulsed YAG laser is carried out. The experimental results show that, the removal mechanism differs under different experimental conditions, which is mainly ablation effect when blowing argon but transfers into vibration effect and ablation effect when water as a transparency overlay is used. The overlay water can not only increase the removal rate but also enlarge the damage threshold of laser. The removing effect of overlapping ratio is also calculated, that is, with the laser scanning speed of 249 mm/min and the overlap value between two traces of 0.6 mm, the whole paint layer can be removed completely with the removal rate of 15.5 mm2/s.