Coal machine cutting pick wear-resistant coating and preparation method thereof

• Main Authors: HUANG GUANGCAN, HU RUIZHANG, XIN GUOSONG, CHEN LINTING, GUO CHUN, LIU CHUNJING, JIANG SHICHUN, WANG CHAO, CHEN FENG, XING FEI
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: ALLOYS; CASTING; 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; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

The invention belongs to the field of advanced materials, and particularly relates to a coal machine cutting pick wear-resistant coating which comprises the following components in percentage by mass: 17-19 wt.% of Cr, 13-15 wt.% of Mn, 9-11 wt.% of Co, 3-5 wt.% of W, 1-3 wt.% of C, 3-5 wt.% of ZrC and the balance of Fe. According to the wear-resistant functional coating, the thickness of the coating is 1.5-3 mm, metallurgical bonding is adopted between the coating and the base material, the bonding strength is larger than or equal to 350 Mpa, the microhardness of the coating is larger than or equal to 600 HV0.2, the internal structure of the coating is compact, the porosity is smaller than or equal to 1%, the friction matching pair wear rate of the coating is smaller than or equal to 1 * 10 <-5 > mm < 3 >/N.m, and the wear-resistant functional coating can remarkably improve the wear resistance of the coal mining machine cutting pick and is mainly used for wear resistance of the coal mining machine cutting pi