High speed rotating machinery axle laser cladding repair alloy powder and repair method

• Main Authors: WANG KANGJING, GUO SHUXIANG, FENG XIAOQING, CUI FASHENG, TIAN WEIJUN
• Format: Patent
• Language: Chinese; English
• Published: 16.10.2013
• Subjects: ALLOYS; 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; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WELDING; WORKING BY LASER BEAM

The invention discloses a high speed rotating machinery axle laser cladding repair alloy powder and a repair method. The alloy powder is prepared with the following components by weight: 0.13 percent of C, 13 percent to 17 percent of Cr, 1.3 percent of Si, 4 percent to 6 percent of Ni, less than 0.03 percent of P, and the balancing percent being Fe. According to the method provided by the invention, alloy powder is obtained by strict screen of raw material and matching thereof, can restore the damage part size of the rotating shaft, and is wearproof, so as to enable the degree of wear proof of shaft neck after being repaired by the alloy powder to surpass the substrate, that is, for the degree of wearproof of the shaft neck, the service life of the repaired rotating shaft surpasses that of a newly produced rotating shaft; furthermore, corrosion resistance of the shaft neck of the repaired alloy powder is greatly increased, so as to enable the rotator shaft to be more wear-resisting in the next period, and the