【摘要】 采用半导体泵浦YAG可倍频激光器,在灰铸铁摩擦副表面进行微观几何形貌的加工试验研究。本文分析了脉冲激光与金属材料相互作用的机理,系统研究了激光束功率密度、重复频率、扫描速度、脉冲宽度、辅助气体和表面涂层等因素对金属表面微加工质量影响,得到了优化的激光工艺参数组合,获取了较好的表面微造型加工质量。更多还原

【Abstract】 A diode pumped frequency-doubled YAG laser is used to study the micro-surface-structure on the surface friction units made from grey cast iron.In this paper,the interaction mechanism between the pulsed laser and metallic materials is analyzed.The influence of the laser beams’ power density,repetition frequency,cutting speed,pulse duration,accessorial gas and surface coating to the micro-processed surface quality.The optimal combination of laser technical parameters was acquired,resulting in well surface micromachining quality.更多还原