Applying Thermal Coatings to Narrow Walls of the Continuous-Casting Molds

Abstract

Studies on enhancing the service life of continuous casting moulds at their narrow walls of copper M1 before the last repair by means of a heat spraying wear-resistant layer of the chrome-nickel coating have been carried out. Preliminary, the coating`s structure, phase composition, skin hardness and microhardness of chromium-nickel coating were studied. It is established that to obtain the required cleanliness level of the wall surface by making use of their mechanical operation, it is necessary to conduct thickness of the chromium-nickel coating operations. 0.5 – 0.6 mm chrome-nickel thermal coating was applied to the surface of the wall of a thick-walled narrow pair crystallizer. The results indicate the high-quality coating acceptable for application to the working surface of narrow walls of thick-walled moulds.