Surface treatment method of zirconium alloy cladding tube for coating

• Main Authors: HE FEI, HAN NING, WANG CHENYANG, HU XUKUN, ZHAO LINKE, GAO BO, DUAN JUNTING, SHANG YILONG
• Format: Patent
• Language: Chinese; English
• Published: 05.03.2024
• Subjects: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS; 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; DIFFUSION TREATMENT OF METALLIC MATERIAL; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; GRINDING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; POLISHING; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention belongs to the technical field of zirconium alloy processing, and particularly provides a surface treatment method of a zirconium alloy cladding tube for a coating, which is characterized by comprising the following steps of: preparing mixed acid based on a preset acid pickling removal amount of the outer diameter of the zirconium alloy cladding tube; the mixed acid comprises nitric acid, hydrofluoric acid and water; the zirconium alloy cladding tube is subjected to acid pickling through the mixed acid; and the surface of the zirconium alloy cladding pipe is polished through a sand-free pure cork abrasive belt. According to the zirconium alloy cladding pipe surface treatment process, the zirconium alloy cladding pipe surface treatment process is optimized, particles and impurities on the surface are removed through acid pickling, and scratches, particle accumulation and tearing cracks on the surface are reduced through sand-free pure cork abrasive belt polishing; and the conditions of coating cr