Dependence of abrasive ability of truing diamond tools on mechanical properties of metal matrices

Abstract

The present work is devoted to the study of hardness, density, wear resistance of metal matrix samples and the abrasive ability of truing diamond tool. Diamond-containing and diamond-free samples of 14 mm in diameter and 7 mm high of the following compositions: W–Cu, W–C–Cu, W–C–Co–Cu have been produced with the use of the infiltration method at temperatures of 1100–1150 °C for 15 min in the hydrogen environment. Synthetic dia- monds of SDB 1100 40/50 grade were used in the experiments. It has been established during the investigation that the increase in abrasive resis- tance of metal matrices leads to elevation of abrasive ability of the truing diamond tool. It is proved by the experiments that the porosity (up to 4 %) of the diamond tool matrices exercises strong impact on their abrasive resistance and weak one on their hardness.