COMPOSITE WELDING METHOD OF ZINC-BASED PLATED STEEL SHEET

• Main Authors: NOBUTOKI TOMOKAZU, IENARI TORU, TOMIMURA HIROKI, ASADA HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 13.06.2019
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

To provide a composite welding method for forming an excellent weld bead, in which generation of a weld defect is suppressed.SOLUTION: In a composite welding method by laser welding for performing butt welding of a zinc-based plated steel sheet and by arc welding, the laser welding is performed in advance of the arc welding, and either means between pulse arc-welding means for applying a welding-current in a pulsed manner and wire feed control means for repeating regular sending and reverse sending of a welding wire is used, as the arc welding.SELECTED DRAWING: Figure 1 【課題】溶接欠陥の発生が抑制された、良好な溶接ビートを形成するための複合溶接法を提供する。【解決手段】亜鉛系めっき鋼板を突合せ溶接するレーザ溶接及びアーク溶接による複合溶接方法であって、前記レーザ溶接を前記アーク溶接に先行させて溶接するとともに、前記アーク溶接として、溶接電流をパルス状に印加するパルスアーク溶接手段、または、溶接ワイヤの正送及び逆送を繰り返すワイヤ送給制御手段のいずれかの手段を用いる。【選択図】図１