Investigation of the Technology of Restoration of the Eccentric Sleeve of a Cone Crusher by Electric Arc Metallization

Abstract

A solution of two problems is proposed. The first task was technological, in which one of the ways of repairing and restoring the involved part was considered – the restoration of the eccentric sleeve of the GP 500 cone crusher for fine and fine crushing of ores by electric arc metallization. The second task is mathematical. A computational and theoretical analysis of the choice of optimal EDM modes for obtaining a high-quality coating with antifriction properties on the surface of an eccentric sleeve is carried out.Conclusion on research work: - a decrease in the purge flow rate leads to an increase in the influence of the aerodynamic drag coefficient of the air on the movement of the parts of the molten particle, i.e. the time during which the molten metal is collected into the spherical part of the particle increases, therefore the diameter of the sprayed particles increases; - materials selected from copper and steel wire make it possible to obtain a coating of the surface of the sprayed part with high antifriction properties, which increases the strength and service life of the eccentric sleeve restored in the operation of the cone crusher; - in this paper, an alloy consisting of two metals is presented and studied, but today there are a huge number of possibilities in choosing various modern coatings used for parts operating under conditions of intense abrasive wear, significant shock loads, pressure, rolling, friction, sliding of metal surfaces. As an innovation in electroplating technology, it is proposed to continue research on a larger scale with further determination of stronger alloys.