An Influence of the Pulsed Magnetic Field Processing on the Cemented Carbide Cutting Tools Wear

Abstract

An influence of pulsed field processing technology on the cutting performance of cemented carbide cutting tools has been evaluated in this study. The magnetic pulsed field interacts with the metal-cutting tool material, changing its thermal and electromagnetic properties and improving its structure and performance. Improved properties in metal-cutting tools are achieved by directing the free electrons of the material by an external field, resulting in an increase in the thermal and electrical conductivity of the material. For processing of small parts the inductor is established on a horizontal dielectric diamagnetic surface. The products are placed in the middle of the inductor and a processing session lasting 120 s is carried out. Cutting tests when machining hardened steels were performed. Processed parts used for experiments allowed to conduct intermittent machining. This set of tests was conducted to assess the performance of cemented carbide cutting tools processed via pulsed magnetic field method and compare their ability to withstand to intermittent loads during machining of hardened steel. Such type of tests was utilized because the main supposed effect of pulsed magnetic field processing (PMFP) is an increase of bending strength of the material and declination of variance of their mechanical properties. Experimental study of two grades of cemented carbide indexable inserts showed that, other things being equal, processed by PMF method cutting tools demonstrate higher resistance to abrasive wear and higher strength of the cutting edges.