METHOD OF MANUFACTURING SINTERED MACHINE PART

摘要

PROBLEM TO BE SOLVED: To efficiently and economically manufacture an iron sintered machine part with different material and mechanical properties part by part in one component. SOLUTION: The green compact comprises a portion 12 of a composition having a low appropriate sintering temperature and a portion 11 of a composition having a high appropriate sintering temperature, and a regular sintering is performed to the entire green compact at the low appropriate sintering temperature, and the partial sintering at a predetermined high temperature by the induction heating is performed only to a portion requiring the high temperature sintering. Compared with the high temperature regular sintering of the entire green compact, the time required for this manufacturing method is considerably short, and the machine part with each portion having a desired characteristic can be obtained inexpensively.