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首页> 外文会议>International Congress on Applications of Lasers and Electro-Optics >LASER KEYHOLE WELDING OF GALVANIZED HIGH-STRENGTH STEEL IN A GAP-FREE LAP JOINT CONFIGURATION
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LASER KEYHOLE WELDING OF GALVANIZED HIGH-STRENGTH STEEL IN A GAP-FREE LAP JOINT CONFIGURATION

机译：镀锌高强度钢的激光钥匙孔焊接在无间隙圈关节配置中

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摘要

The use of high-strength galvanized steels has increased significantly in various industries. However, welding of galvanized steels in a gap-free lap joint configuration presents a difficulty in dealing with the highly-pressurized zinc vapor resulting from the lower boiling point of zinc as compared to the melting point of steel. When failing to vent the highly-pressurized zinc vapor, a large amount of spatter and blowholes are produced in the weld during the welding process, which leads to significant degradation of the mechanical properties of the weld. In order to vent the zinc vapor, it is common for the industries to set up a small gap at the faying surface of two metal sheets prior to the welding process. This gap is costly to ensure the dimensional integrity of the flanges. Industry is continuously seeking for a single laser beam welding technique without the pre- or post weld processing.
机译：在各个行业中使用高强度镀锌钢的使用显着增加。然而，在无间隙的钢圈接头配置中镀锌钢的焊接具有与钢的熔点相比处理由锌的较低沸点导致的高压锌蒸气。当未能排出高压锌蒸气时，在焊接过程中焊接中产生大量的飞溅和吹风机，这导致焊缝的机械性能显着降低。为了排出锌蒸气，在焊接过程之前，该行业在两个金属板的卸料表面中建立小间隙。这种差距昂贵，以确保法兰的尺寸完整性。工业不断寻求单一激光束焊接技术而无需预先或焊接处理。

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