摘要
以1 mm厚有机玻璃作为实验材料,使用光纤激光器进行振镜扫描焊接实验,实验采用单一因素法详细研究了振镜扫描间距及扫描速度对焊接强度的影响。结果表明,光纤激光器可以很好地实现有机玻璃的激光焊接;采用振镜扫描方式焊接塑料可以方便控制焊缝的宽度,焊接效率较高;随扫描间距的增加,焊接强度先增大后减小,当扫描间距为0.02 mm,即两扫描线恰好相接时达到最大值;随扫描速度的增加,焊缝强度也是呈现先增大后减小趋势,存在一个最佳速度。拉伸实验时,部分试样在热影响区断裂,为提高焊接强度,应严格控制热量的输入,减小热影响区。
With 1 mm thick plexiglass as experimental material, fiber laser for galvanometer scanning welding experiments, using single factor method, studied the effect of galvanometer scanning space and scan- ning speed on weld strength. The results showed that the fiber laser could achieve very good laser welding of plexiglass; using galvanometer scanning, welding plastic could easily control the gap width of weld, got good welding efficacy; with an increase of scanning space, weld strength increased first and then decreased when the scan space was 0. 02 mm, that was precisely the two-phase scan line reached the maximum; with the in- crease of scanning speed, weld strength was increased and then decreased, there was an optimum speed. In tensile test, some specimens parted in heat affected zone, to enhance the welding strength, the heat input should be strictly controlled to reduce the heat-affected zone.
出处
《塑料工业》
CAS
CSCD
北大核心
2009年第9期43-45,共3页
China Plastics Industry
基金
科技型中小企业创新基金项目(国家科技部07C26214401791)
关键词
塑料焊接
聚甲基丙烯酸甲酯
光纤激光
振镜扫描
焊接强度
Plastic Welding
Polymethylmethacrylate
Fiber Laser
Galvanometer Scanning
Welding Strength
