扫描次数对准同步激光玻璃焊接焊缝成形影响  

Effects of Scanning Times on Weld Formation in Quasi-Simultaneous Laser Welding of Glass

作　　者：殷慧泽 刘亚运 王传洋[1] Yin Huize;Liu Yayun;Wang Chuanyang(School of Mechanical and Electrical Engineering,Soochow University,Suzhou 215137,Jiangsu,China)

机构地区：[1]苏州大学机电工程学院,江苏苏州215137

出　　处：《应用激光》2025年第1期9-15,共7页Applied Laser

基　　金：国家自然科学基金(52075354);江苏省自然科学基金青年项目(BK20210718)。

摘　　要：针对非光学接触的玻璃焊接中许用间隙小和热损伤大的缺点,采用50 W红外皮秒激光器和100 mm焦距扫描振镜,利用高速扫描多次加工的准同步焊接方法,研究扫描次数对焊缝成形的影响规律,获得了石英玻璃的低热损伤区域焊接接头,将其许用间隙拓宽至5μm。实验结果表明:玻璃间隙产生的空腔在熔池中以气泡形式存在,空腔随着扫描次数增加远离原玻璃界面,上下层玻璃熔合而形成强结合力;当采用单脉冲能量24μJ、扫描速度1000 mm/s、离焦量-100μm、扫描次数为5次的工艺参数时,最大焊接强度达到21.42 MPa;并且在5μm的宽间隙下,焊接强度也可达到15.79 MPa。In view of the disadvantages of small allowable gap and large thermal damage in non-optical contact glass welding,a 50 W infrared picosecond laser,equipped with a 100 mm long focal scanning galvanometer,was employed to investigate the influence of laser scanning number on the welding morphologies in this study.The silica glass welding joint with low heat damage zone was obtained via non-optical contact by quasi-simultaneous welding method,and the allowable gap of welded joint was increased to 5μm.The experimental results demonstrate that the cavities produced by the glass gap exist in the form of bubbles in the molten pool.With the increase of scanning times,the cavities are far away from the original glass interface and the upper and lower glasses are fused to form a strong bonding force.The maximum welding strength was improved to 21.42 MPa under the process parameters with single pulse energy of 24μJ,scanning speed of 1000 mm/s,defocusing amount of-100μm and scanning number of 5 times;meanwhile,it still can reach to 15.79 MPa under such large welding gap of 5μm.

关 键 词：超快激光 玻璃焊接 准同步焊接 焊缝成形 非光学接触 

分 类 号：TG456.7[金属学及工艺—焊接]