Supersonic spray coating method of crystallizer copper plate

Abstract

The invention discloses a supersonic spraying method for crystal implement copper plates, which is characterized in that the operation of the method is carried out according to the following steps that: firstly, cleaning and sand blasting treatments are carried out to the surface of a crystal implement copper plate through a conventional cleaning process; secondly, four peripheries of thecrystal implement copper plate are provided with protective plates at an angle of between 90 and 180 degrees with a working surface of the copper plate; thirdly, nickel-base alloy powder spraying paint is put into a supersonic flame spraying device so as to spray the surface of the crystal implement copper plate through a conventional process; fourthly, after spraying, the crystal implement copper plate is insulated at a temperature of between 800 and 950 DEG C for 0.5 to 3 hours for melting-diffusing vacuum heat treatment, and then is cooled through nitrogen, argon or helium; fifthly, the cooled crystal implement copper plate is subject to aging treatment at a temperature of between 400 and 500 DEG C for 1 to 3 hours. The supersonic spraying method is simple in the whole spraying process and uniform in spraying thickness, saves spraying material, and is strong in coating binding capacity and is wearproof.

Description

technical field [0001] The invention belongs to the technical field of spraying, and in particular relates to a supersonic spraying method for a crystallizer copper plate. Background technique [0002] In the known technology, in the past, the crystallizer copper plate was plated with Cr, NiFe, NiCo, CoNi, Ni or Ni+Cr in order to improve the wear resistance of the working surface, so as to improve the service life of the copper plate. Spray wear-resistant coating on the copper plate of the crystallizer, as the patent of the authorized announcement date on November 28, 2007, the authorized announcement number CN 100351420C discloses a method for supersonic flame spraying the copper plate of the crystallizer, which is characterized in that it includes the following method steps: first use The conventional cleaning process cleans and blasts the surface of the crystallizer copper plate; secondly, take 50%-95% of nickel-based alloy particles according to the total mass percentage...

AI Technical Summary

Problems solved by technology

However, the bonding strength of spraying has not been high, and it is easy to fall off, which easily affects the use effect of the crystallizer copper plate

The crystallizer copper plate produced by the above method is still not long enough, the performance and price are relatively low, the copper plate is replaced more frequently, and the continuous casting operation rate is still not high enough

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