METHOD FOR MANUFACTURING SINTERING-DIFFUSION-BONDED COMPONENT

摘要

PROBLEM TO BE SOLVED: To allow the cutting work of a surface layer of an abrasion-resistant material without execution of an annealing step.SOLUTION: A method for manufacturing a sintering-diffusion-bonded component in which an abrasion-resistant material composed of carbon steel having a hardness of Hv 600 or more and a compact composed of an Fe-based metal mainly composed of Fe are mutually bonded by sintering-diffusion-bonding includes: an assembling step 101 of assembling an abrasion-resistant material into a compact containing a ferritized element; a decarburization step 102 of causing decarburization on a surface layer of the abrasion-resistant material to form a ferrite phase by heating the abrasion-resistant material and the compact under a decarburizing atmosphere; a sintering step 103 of diffusion-bonding the abrasion-resistant material to the compact while sintering the compact by heating the abrasion-resistant material and the compact, and further extending the forming range of the ferrite phase by diffusing the ferritized element on the surface layer of the abrasion-resistant material; and a cutting step 104 of cutting the surface layer of the diffusion-bonded abrasion-resistant material.