NEW TECHNOLOGY FOR HARDENING READY-MADE TOOLS IN AQUAEOUS DISPERSED MEDIA

Abstract

The new method for hardening ready-made steels, hard alloys and diamond tools is developed: low-temperature process for producing thin-film solid lubricant coatings by hydro chemical treatment in specially prepared aqueous media of nanosized hard refractory compounds and subsequent tempering. The main advantages of the method over known processes are presented. The principles for dispersion of refractory materials are formulated. The structure and properties of the obtained coatings are examined. The fields of high compression strains (180-470 МPа) are created in tool materials subjected to hydro chemical treatment. The new process permits decreasing the friction coefficient of tools surface in 3.8-12.1 and increasing the service life of steel, carbide and diamond tools by the factor of 1.5-8 as compared with untreated materials.