Antiseptic wearable coat and coating method thereof

Abstract

The invention discloses a corrosion and abrasion resistant coating and a coating method thereof, comprising: firstly, weight percentage of compositions of coating materials adopted is that: carbon: less than or equal to 0.5 percent; chromium: 16 to 26 percent; nickel: 3.5 to 9.5 percent; molybdenum: 1.0 to 4.0 percent; boron: 0.5 to 4.5 percent; silicon: 0.5 to 4.5 percent; copper: 1.0 to 4.0 percent; manganese: 0 to 2.0 percent; rare earth - rhenium: 0.01 to 1.5 percent; the residual is ferrum and inevitable impurities; secondly, pretreatment of the surface of a metallic matrix reaches technological demand; thirdly, thermal spraying is adopted on the matrix surface; a plurality of air cooling nozzles surrounding a spray gun which are in parallel with spraying flame velocity are arranged on the spray gun; travel rate of the spray gun is 150 to 400 millimeters per second; surface temperature of workpieces is controlled to be less than 150 DEG C; an amorphous stainless steel protective coating is formed on the matrix surface finally; fourthly, sundries on the coating surface are cleaned, and the coating is performed sealing treatment. The invention solves the protective problem of erosion-corrosion under the condition of acid humid environment and that Cl<-> ions and dust particles exist.

Description

technical field [0001] The invention relates to the surface strengthening treatment technology of metal parts, in particular to an anti-corrosion and wear-resistant coating and a coating method thereof. Background technique [0002] Blast furnace top gas pressure energy recovery turbine (TRT for short), when the wet dust removal method is used for gas purification, the existence of near-saturated humidity will form a local water film on the metal parts, and the enrichment of chloride ions will occur. The interaction between solid particle scouring wear and chloride ions causes more serious scouring and corrosion phenomena, and large areas of corrosion pits and scouring occur in turbine rotor shafts, moving blades, stationary blades and their roots. Wear and groove marks affect the expected service life of the equipment and shorten the maintenance cycle of the equipment. [0003] The existing technologies to solve this kind of corrosion and wear problems in acidic and humid ...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of anticorrosion wear-resisting coating and coating method thereof, solve the problem in acidic humid environment, especially in the presence of Cl - Protection against erosion corrosion in the presence of ions and dust particles