Production method for sintered machine components
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United States of America Patent
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Issued Date -
Oct 29, 2009
app pub date -
Apr 21, 2009
filing date -
Apr 25, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A production method for sintered machine components, includes preparing an Fe alloy powder A, an Fe alloy powder B, an Fe—P powder, and a graphite powder. The Fe alloy powder A consists of, by mass %, 25 to 45% of Cr, 1.0 to 3.0% of Mo, 1.0 to 3.0% of Si, 0.5 to 1.5% of C, and the balance of Fe and inevitable impurities. The Fe alloy powder B consists of, by mass 15 to 35% of Cr, 15 to 30% of Ni, and the balance of Fe and inevitable impurities, and the Fe—P powder consists of 10 to 30 mass % of P and the balance of Fe and inevitable impurities. The production method further includes mixing 40 to 60 mass % of the Fe alloy powder B, 1.0 to 5.0 mass % of the Fe—P powder, and 0.5 to 3.5 mass % of the graphite powder with the Fe alloy powder A into a mixed powder. The production method further includes compacting the mixed powder into a green compact and sintering the green compact.
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