| 摘要 |
PURPOSE:To prevent the deterioration in corrosion resistance of a joining part by cleaning the surface after welding a base metal, and covering a laminated material part by thermal spraying by using a corrosion-resistant thermal spraying material exceeding the laminated material, in case of joining a clad steel having a thin laminated material. CONSTITUTION:First of all, a joining part of a carbon steel base metal is welded. Subsequently, a part having no stainless steel material on the surface of a clad containing its weld zone is cleaned by blast, etc., and covered by thermal spraying, for instance, SUS316, etc. whose corrosion resistance is larger than that of stainless steel. When the surface is brought to flat processing, carbon transition of the base metal does not occur on the surface material of the joining part and the corrosion resistance is not deteriorated. In this regard, when the hole sealing treatment and the surface coating are executed after the thermal spraying, the corrosion resistance and cleaning property are further improved. |
