| 摘要 |
PROBLEM TO BE SOLVED: To provide an economical method for producing high strength sintered parts. SOLUTION: Iron powder or iron base alloy powder is added and mixed with Fe-C base water atomizing powder, preferably having <=30μm average grain size and contg. 2 to 5 wt.% C so as to regulate the C content to the prescribed one, which is thereafter pressurized, compacted and sintered, preferably in a low temp. range of 1,100 to 1,200 deg.C. The iron base alloy powder is preferably composed of water atomizing alloy steel powder contg. proper amounts of Cu, Mo, Nb or the like as prealloy components. Moreover, Cu may be partially alloyed by a proper amt.
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