METAL SHEETS SPOT WELDING WITH INOCULATION AGENTS

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The present invention relates to a method for spot-welding two sheets formed mainly of galvanized steel sheets, including the following steps of : predetermining a position area where a welding spot is formed in two sheets which come in contact with each other; applying materials including inoculation particles onto a surface of at least one of the two sheets in the position area; and spot-welding the two sheets by allowing current to flow through the sheets through a pair of electrodes, wherein the particles include at least one material selected from a group consisting of a (a) C + Ti-B alloy, and (b) Al-Ti-B-Re alloy + C.COPYRIGHT KIPO 2018