ARC WELDING METHOD OF MOLTEN Zn TYPE PLATED STEEL PLATE, MANUFACTURING METHOD OF WELDED MEMBER AND WELDED MEMBER

• Main Authors: NOBUTOKI TOMOKAZU, HOSOMI KAZUAKI, NAKAKO TAKEFUMI
• Format: Patent
• Language: English; Japanese
• Published: 28.12.2017
• Subjects: ALLOYS; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; FERROUS OR NON-FERROUS ALLOYS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WELDING; WORKING BY LASER BEAM

PROBLEM TO BE SOLVED: To provide an arc welding method of a molten Zn type plated steel plate, a manufacturing method of a welded member and the welded member excellent in welded part appearance and welded strength.SOLUTION: An arc welding method includes a process of welding molten Zn type plated steel plates with each other according to a pulse arc welding method which generates an arc by supplying a peak current and a base current alternately. Therein, a distance from a tip of a welding wire 2 to a welding object part on a part abutted to each other of molten Zn type plated steel plates 1, 1' as welding object is such a length that the welding wire 2 and a molten pool 3 produced on the abutted part are not short-circuited with each other and the welding is performed in such a length that the arc does not put out.SELECTED DRAWING: Figure 2 【課題】溶接部外観と溶接強度に優れた溶融Ｚｎ系めっき鋼板のアーク溶接方法、溶接部材の製造方法および溶接部材を提供する。【解決手段】ピーク電流とベース電流とを交互に供給することによってアークを発生させるパルスアーク溶接法により溶融Ｚｎ系めっき鋼板同士を溶接するアーク溶接方法であって、溶接ワイヤ２の先端から、溶接対象である溶融Ｚｎ系めっき鋼板１・１'同士の当接部における溶接対象部までの距離が、溶接ワイヤ２と当接部に生じた溶融池３とが互いに短絡しない長さであり、かつアークが消灯しない長さにて溶接する。【選択図】図２