PYAIIC. PRODUCTION OF ABRASIVE MATERIALS FOR SURFACE PREPARATION FOR PLASMA SPRAYING

Abstract

Within the framework of the state import substitution program, the issues of developing and using low-cost, environmentally friendly, highly efficient, simple and universal technologies for producing abrasive materials with the predefined fractional composition are relevant. (Research purpose) The research purpose is investigating the process of producing an abrasive material of a predefined fractional composition for sandblasting of the part before its plasma spraying. (Materials and methods) An experimental installation with fluidization and gas flow stabilization devices used to separate multicomponent material into dimensional fractions was used to obtain coatings. (Results and discussion) The article presents the technological process of separation of quartz sand and an experimental installation for producing abrasive material of specified fractions. Using the described process, which includes equations for the separation of abrasive particles of quartz sand, increases the accuracy of obtaining the material of the necessary granulation for sandblasting the part before plasma spraying. (Conclusions) The ways of solving the problem of separation of multicomponent materials (quartz sand and possible impurities) were described for sandblasting the surfaces of parts before applying plasma spraying technology to specified size fractions, which directly improves the quality of the coating applied during further processing of the surfaces of parts. In the method described in this paper, the deviation of the particle size from the calculated value is no more than 2-3 percent, with other methods for obtaining a material with a given size fraction, the deviation of the particle size from the calculated value reaches 10 percent.