论文部分内容阅读
激光加工是激光应用最有光明前景的领域之一,而激光焊接则是激光加工的一个重要方面。目前国内外激光焊接技术已从探索实验阶段走向较为广泛的工业应用,就中小功率YAG固体激光焊接而言,在电子、仪器、仪表、机械、航空等工业和科学研究中,发挥了一定的作用,取得了明显的经济和技术效果。同电阻焊、电子束(或离子束)焊、真空钎焊等焊接技术相比,激光焊接有如下特点:1.输出功率密度高。激光焦点的功率密度可达10~5～10~(13)瓦/厘米~2,能使许多高熔点金属熔化焊接;2.非接触焊,焊件机械变形小,还可透过透明体进行隔离焊接(如玻璃真空管内的金属器件焊接);3.热影响区小,焊件热变形小;4.能在任意环境里加工,环境清洁度要求
Laser processing is one of the most promising areas of laser applications, and laser welding is an important aspect of laser processing. At present, the laser welding technology at home and abroad has gone from exploration experiment stage to a wider range of industrial applications. For small and medium-power YAG solid laser welding, it plays a certain role in the industrial and scientific research of electronics, instruments, instruments, machinery and aviation , Has achieved significant economic and technological results. Compared with resistance welding, electron beam (or ion beam) welding, vacuum brazing and other welding technology, laser welding has the following characteristics: 1. High output power density. Laser focus of the power density of up to 10 ~ 5 ~ 10 ~ (13) W / cm ~ 2, can make many high melting point metal melting welding; 2. Non-contact welding, welding mechanical deformation, but also through the transparent body Isolation welding (such as glass vacuum tube welding of metal parts); 3 heat-affected zone, welding small thermal deformation; 4 can be processed in any environment, environmental cleanliness requirements