| 摘要 |
PURPOSE:To eliminate the crack due to the residue of an oxide and improve the quality of a weld zone with a simple method by performing a welding by coating the grease specifying the consistency and adhesive amount on the butt part of the material to be welded. CONSTITUTION:An electrode 1 is fitted to a stationary platen and electrode 2 to a mobile platen and a pair of the materials W, W' to be welded abutted by these electrodes 1, 2 are clamped. And after coating the grease that the JIS consistency No. is >=No.100 and adhesion amount >=20g/m<2> as the substance 3 generating a gas while under welding in the vicinity of the butt part, a butt welding is performed. As a result, the oxidation of a manganese, silica, chrome, etc. around the heating part is prevented by the vapor pressure of the gas generated from the grease and the crack by the oxide is prevented, so the quality of the weld zone is improved with a simple method.
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