MANUFACTURING METHOD OF SINTERED DIAMOND TOOL BY METAL POWDER INJECTION MOLDING PROCESS AND SINTERED DIAMOND TOOL MANUFACTURED THEREBY

摘要

The present invention relates to a method for producing a diamond tool sintered body by powder injection molding which can produce a product by further sintering together with diamond particles in molding and sintering a mixture of metal powder and ceramic powder by powder injection molding. In the manufacture of the tool sintered body by the powder injection molding method including a molding step, a degreasing step, and a sintering step, (1) the mixture of the sintered powder and the binder is homogeneously as 0.1 to 25% by volume of diamond particles and the remaining amount. Mixing to obtain a molding mixture by mixing; (2) a molding step of injection molding the molding mixture obtained in the mixing step by a conventional injection molding method; (3) a degreasing step of degreasing the binder and the like from the molded article formed in the forming step; And (4) a sintering step of sintering the molded product subjected to the degreasing process at a temperature in the range of 700 to 1,300 ° C.