摘要:
为了提高激光无铅钎焊的速度,对影响激光无铅钎焊速度的因素(如激光的参数、所用钎料和基体的特性、钎焊的系统结构等)进行了分析研究.研究认为,在激光器、钎料及基体等已定的情况下,相对于那些受到机械惯性制约的移动激光加工头或移动工作台的激光钎焊系统,一种配备了振镜扫描系统和f-theta聚焦透镜的激光钎焊系统具有更高的钎焊速度.另外,对激光钎焊过程中激光束的扫描路径进行了优化,这种优化能在不增加硬件成本的基础上大大缩短总扫描路程,较大程度地提高激光钎焊速度.最后通过实例对激光钎焊的快速性进行了验证.
Abstract:
In order to increase the lead-free laser soldering speed,the laser parameters,properties of solder and substrate,laser soldering system and other influencing factors of the lead-free laser soldering are studied.The research shows that once the laser,the solder and the substrate are given,a laser soldering system equipped with two galvanometer scanners and an f-theta lens has obvious advantages in soldering speed as compared with the traditional laser soldering system with moving worktable or laser head,because the reflection of the laser beam through the scanning galvanometers overcomes the restriction of the mechanical inertia of the laser head and worktable.In addition,the path that laser beam has scanned in the process of soldering is optimized.The optimization can greatly shorten the total scanning distance and improve the soldering speed without any additional hardware cost.
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