Alloy coated boiler component

Provided is an alloy-coated boiler component which is to be welded at an end thereof, wherein a melted coating (15) with a first alloy material comprising not less than 1.5 % and not more than 2.5 % of B, not less than 3.5 % and not more than 4.0 % of Si, not more than 0.4 % of C, and not less than...

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Bibliographische Detailangaben
Hauptverfasser:	TAKEYA, AKIHIRO, MATSUBARA, YOICHI, SOCHI, YOSHINOBU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS BLASTING CHEMICAL SURFACE TREATMENT CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METHODS OF STEAM GENERATION PERFORMING OPERATIONS SOLDERING OR UNSOLDERING STEAM BOILERS STEAM GENERATION SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	Provided is an alloy-coated boiler component which is to be welded at an end thereof, wherein a melted coating (15) with a first alloy material comprising not less than 1.5 % and not more than 2.5 % of B, not less than 3.5 % and not more than 4.0 % of Si, not more than 0.4 % of C, and not less than 12.0 % and not more than 17.0 % of Cr, and the balance being Ni and incidental impurities, is applied to the metallic base material on an end region including the end and its proximity and, a melted coating (16) of a second alloy material comprising more than 2.5 % and not more than 4.0 % of B, more than 4.0 % and not more than 5.0 % of Si, not less than 0.5 % and not more than 0.9 % of C, and not less than 12.0 % and not more than 17.0 % of Cr, and the balance being Ni and incidental impurities, is applied to the metallic base material on a non-end region other than the end region (percentages are expressed in terms of mass percentages). This alloy-coated boiler component has melted coatings which can be formed by