| 摘要 |
PURPOSE:To prevent flow-out of a molten slag or a molten metal by inserting a molding body into a groove, by forming a section in the lengthwise direction of a cuttable molding body whose main component is a fire resistance solvent, in a similar form to a groove form of downhand welding. CONSTITUTION:Thick steel plates 13, 14 to be welded is tack-welded at a prescribed interval to a reverse metallic strap 15, and in conformity with a prepared groove shape, tab plates 16, 16' are welded and fitted. Subsequently, in conformity with a groove prepared by the tab plates 16, 16', a flow-out preventing agent 12 is inserted, and welding materials 13, 14 are latent arc-welded or MIG-welded. As a result, a molten slag or a molten metal is stopped by the flow-out preventing agent 12, and a bead end part is laminated by making the inside face of the flow-out preventing agent 12 as a boundary. Accordingly, it is unnecessary to use a lng tab material, and the welding material is not wasted. Also, the reciprocating welding decided by a position of the flow-out preventing agent 12 can be executed, and welding of a thick plate can be executed continuously and automatically. |
