调Q脉冲YAG激光器表面微观造型的控制研究

二极管泵浦固体激光器具有脉冲宽度窄、峰值功率高等特点,特别适合用于摩擦副工件表面微观造型。微观造型的几何形貌主要有微坑、槽及其组成的网纹等,它们能有效地改善润滑,起到减少磨损的作用。由于单个激光脉冲的加工能量十分有限,有时需要在工件的同一个位置打出若干个激光脉冲,才能满足特定的加工需求。通过对调Q脉冲信号的控制,实现了控制单个激光脉冲输出的要求,提高了在发动机气缸缸套内壁表面和活塞环外表面进行微造型处理的效率,拓宽了激光微造型加工的应用范围。

Study on Control of Surface Micro-Texturing with Q-Switched Nd: YAG Laser

LD pumped solid laser is characterized with many capabilities such as narrow pulse duration,short wavelength and high peak power.Therefore,it is quiete suitable to treat micro-surface-structures,such as micropores,microgrooves and combinations of them,which can efficiently maintain hydrodynamic effects and reduce abrasion.Because of limited energy of a single laser pulse,in order to meet a specific processing demand,it is sometimes necessary to shoot a series of laser pulses on the same place.How to control and coordinate the mechanical and the laser system is the focal point of in this paper.