Alloy coating for crystallizer surface laser cladding and preparation method thereof

• Main Authors: GONG MINGHUI, HOU DANHUI, ZHANG YIFEI, XING FEI
• Format: Patent
• Language: Chinese; English
• Published: 10.02.2010
• Subjects: 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; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention relates to the field of laser cladding, in particular to an alloy coating for crystallizer surface laser cladding and a preparation method thereof. The componenst of the alloy coating are prepared according to the mechanical property and effectiveness condition of the crystallizer and the characteristics of crystallizer surface laser cladding. The alloy coating is prepared from nickel-based self-melt alloy powder comprising the following elements in percentage by mass: Ni 55-57, Cr 16-19, W 8-10, Mo 8-10, Al 0.8-1.0, Ti 2.5-3.5, C 0.2-0.3, Si 2.5-3.5 and B 2-2.5. After being cladby laser, the crystallizer surface has a high-quality coating, thereby meeting the requirements of a crystallizer on a basic performance of quick heat conduction on one hand and increasing the wear resistance and hot erosion resistance of the crystallizer surface.