SUBSTRATE FOR ROTARY CUTTING EDGE, ROTARY CUTTING EDGE AND ROTARY CUTTER FOR CUTTING HARD MATTER USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a substrate for a rotary cutting edge to be used for the rotary cutting edge for cutting hard matter including ceramics and metal without generating deflection in a ring-shaped disc part, even if rotating the rotary cutting edge at high speed. SOLUTION: This substrate for the rotary cutting edge has the ceramics ring-shaped disc part 2 showing a melting phenomenon by absorbing laser beam and an abrasive grain binding layer fixing region for fixing an abrasive binding layer 6 stipulated on an outer peripheral part 4 of the ring-shaped disc part 2 and made of metal or resin including abrasive grain.