Method of manufacturing cast-iron bonded diamond wheel

摘要

A method of manufacturing a cast-iron bonded diamond wheel, by using a cast iron as a bond for holding diamond particles together. After a powder mixture consisting of the diamond particles and the cast iron is molded into a desired formed body, a core tube of a heating furnace is loaded with the formed body. The core tube is maintained in a fluid-tight condition, and a flow of pure H2 gas is introduced into the core tube, so as to maintain the atmosphere within the core tube such that a dew point of the atmosphere is -50 DEG C. or lower. In this condition, the core tube is heated from the outside, whereby the formed mass of diamond abrasive and cast iron bond is sintered into the diamond wheel.