Wear-resistant shaft sleeve coating and preparation method thereof

• Main Authors: HAN JIANZENG, QU HAIXIA, YAO SHUN, TANG CHENGLONG, HOU XIAOGUANG, ZHANG QUNLIANG
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2022
• Subjects: ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; 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; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a wear-resistant shaft sleeve coating and a preparation method thereof. The wear-resistant shaft sleeve coating comprises the following chemical components in percentage by weight: 0.1-0.5% of C, 10-17% of Ni, 8-12% of Cr, 3-6% of Mo, 0.1-4.5% of TiN and the balance of WC and inevitable impurities. The coating raw materials are proportioned according to the components, then laser cladding is carried out in a reverse synchronous powder feeding mode, a laser cladding layer is formed on the surface of a shaft sleeve, and the wear-resistant shaft sleeve coating is obtained after annealing heat treatment. By designing the comprehensive proportion of the components of the shaft sleeve coating, the laser cladding process and the heat treatment process, the mechanical property of the shaft sleeve coating is comprehensively improved, the service life of the shaft sleeve is effectively prolonged, and the problems that the shaft sleeve coating is prone to stripping, the service life of the shaft