2639 レーザ・アークハイブリッド法による亜鉛めっき鋼板の高速溶接プロセス(S75-2 先端材料とレーザー加工(2),S75 先端材料とレーザー加工)

概要

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Galvanized steel plates were lap welded by laser-arc hybrid method. The hybrid system was consisted with 2kW YAG laser oscillator and DC pulse MAG arc welding machine. In the present experiment, the arc-welding rod traveled on the specimens following the laser beam with interval of 2mm. The results showed that the hybrid method has some advantages, such as deep welding depth, high welding speed and high-joint gap tolerance, in comparison with only the arc method. High-speed camera observation suggested that the zinc vapor produced by laser ablation stabilized the arc plasma formation. The effect of the incident angle between welding torch and specimens on molten metal flow was also discussed.
2005-09-18