▎ 摘　　要

NOVELTY - Preparing wear-resistant coating of safety gear of high-speed elevator involves placing boron oxide powder and graphene powder in a ball mill, and ball-milling for 10-12 hours by taking absolute ethyl alcohol and silicon carbide grinding balls as media; drying the ball-milled materials, and then sintering under a vacuum condition to obtain boron carbide powder. The tungsten-cobalt-based amorphous alloy powder with the granularity of 10-20 microns is prepared by adopting a gas atomization method, and tungsten-cobalt-based amorphous alloy powder is prepared by mixing 40-45 wt.% tungsten (W), 40-45 wt.% cobalt (Co), 4-8 wt.% iron (Fe), 4-6 wt.% nickel (Ni), 2-4 wt.% chromium (Cr), 1-2 wt.% yttrium (Y), 1-2 wt.% carbon (C), and balances unavoidable impurities. The boron carbide powder and the tungsten-cobalt-based amorphous alloy powder are mixed, than added with polyvinyl alcohol binder, and uniformly stirring at the temperature of 100-120 degrees C to obtain mixed slurry. USE - Method for preparing wear-resistant coating of safety gear of high-speed elevator. ADVANTAGE - The method enables to prepare wear-resistant coating of safety gear of high-speed elevator, which has good microscopic structure, good coating performance, and effectively prolongs the service life of the high speed lift safety clamp. DETAILED DESCRIPTION - The mixed slurry is sintered in a vacuum furnace at a high temperature until the mixed slurry is completely solidified, and then mechanically crushing the mixed slurry into powder with the granularity of 10-20 mu m to obtain boron carbide/tungsten-cobalt-based amorphous alloy mixed spraying powder, where mass of the boron carbide powder is 10-30 wt.% of the total mass of the boron carbide powder and tungsten-cobalt-based amorphous alloy powder. The surface rust removal is performed by descaling and oil removal cleaning treatment carried out on the working surface of the safety gear of the high-speed elevator; and according to the gradient requirement of the coating, plasma spraying is carried out on the working surface of the treated high-speed elevator safety gear by adopting the boron carbide/tungsten cobalt-based amorphous alloy mixed spraying powder in the third step, so that the wear-resistant coating is obtained on the working surface of the high-speed elevator safety gear.