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METHOD FOR IMPROVING FATIGUE STRENGTH OF LAP-WELDED JOINT, LAP-WELDED JOINT MANUFACTURING METHOD, AND LAP-WELDED JOINT
METHOD FOR IMPROVING FATIGUE STRENGTH OF LAP-WELDED JOINT, LAP-WELDED JOINT MANUFACTURING METHOD, AND LAP-WELDED JOINT
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机译:搭接焊缝的疲劳强度的提高方法,搭接焊缝的制造方法以及搭接焊缝
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摘要
The fatigue strength of a lap-welded joint, wherein an overlapping portion of a first steel material and an overlapping portion of a second steel material overlap with each other, and an edge portion of the first steel material is welded to a front face of the second steel material with a weld zone extending along the edge portion, is improved. First, when a direction perpendicular to an extending direction X of the weld zone and parallel to a front face of the second steel material is defined as a reference direction Y, the lap-welded joint is restrained from moving in the reference direction Y, and the first steel material and the second steel material are restrained from moving in their sheet-thickness directions. In this state, a portion of the second steel material is heated such that a melted portion is formed in the portion of the second steel material.
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