| 摘要 |
PROBLEM TO BE SOLVED: To provide a water-cooling type steel-made tubular structure constituting a converter exhaust gas cooling facility, etc., wherein a film having excellent high-temperature corrosion resistance, high-temperature wear resistance, moisture condensation corrosion resistance, and film peeling resistance is formed, a facility lifetime is long, the maintenance cost and the updating cost are reduced, and the rate of operation of the facility is enhanced, and to provide a method for manufacturing the same. SOLUTION: The water-cooling type steel-made tubular structure is constituted so that Cr alloy of 22-60 mass% effective for high-temperature wear and high-temperature corrosion is covered on a surface of the water-cooling type steel-made tubular structure, and the heating and diffusion treatment is performed for improving the peeling resistance of a film and reducing pores, and a joining layer is formed and an oxidation preventive layer is formed depending on a heating condition so that a layer of Cr alloy of 22-60 mass% is not peeled, and the method for manufacturing the same is provided. COPYRIGHT: (C)2006,JPO&NCIPI |
