Influence of macrostructure of diamond-containing composite materials on cutting capacity of the tool

Abstract

The abrasive ability of composite materials with monocrystals and granules of polycrystalline diamond is investigated. The wear of monocrystals and granules of polycrystalline diamond when processing concrete and steel is defined. The wear of monocrystals is followed by destruction the main cracks, granules of polycrystalline diamond – fragile destruction of diamond grains and a skalyvaniye of separate diamond grains from granules. More, the abrasive ability of composite materials is defined by a large-scale factor – the size of the cutting element. Increase in the sizes of the cutting element of diamond-bearing composite material changes the nature of interaction of the processed material with a matrix, reducing the speed of its wear, and at the same time provides the big durability of his fixing in a matrix