CUBIC BORON NITRIDE GRINDING WHEEL

摘要

It is an object of the present invention to provide a cubic boron nitride grinding wheel especially suitable for a rough grinding. A CBN grinding particle included in a CBN grinding wheel has a single crystal CBN grinding particle having a tetrahedron construction and a multi crystal CBN grinding particle. The single crystal CBN grinding particle is blended with a ratio of equal to or more than 50% to a total summed volume of the single and multi CBN grinding particles.