METHOD FOR REPAIRING WELDED PORTION OF HOT DIPPED ZINC-ALUMINUM ALLOY COATED STEEL MATERIAL, AND WELDED STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a method for repairing a welded portion, which provides excellent adhesion of a repairing material and excellent corrosion resistance of a bonded portion and its surrounding portions, and to provide a welded structure subjected to the repair.

SOLUTION: The method for repairing a welded portion of a hot dipped zinc-aluminum alloy coated steel material is characterized in that: a first sprayed layer is formed by spraying an Al-Si alloy on the upper layer of a welded portion of a hot dipped zinc-aluminum alloy coated steel material; a second sprayed layer is formed by spraying a Zn-Al alloy on the first sprayed layer; and preferably, the sprayed layers and portions surrounding the sprayed layers are further coated with an inorganic and/or organic antirust treatment layer.

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