Process of manufacturing as sintered member having at least one molybdenum-containing wear-resisting layer
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United States of America Patent
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May 10, 1994
Grant Date -
N/A
app pub date -
Jun 22, 1992
filing date -
Jul 2, 1991
priority date (Note) -
Expired
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Abstract
To make a sintered member having a molybdenum-containing wear-resisting layer it is known to compact a low-alloy iron powder for forming the body of said member and a non-alloyed iron-base metal powder, which contains molybdenum and is intended to form the wear-resisting layer, so as to form a shaped member, which is subsequently sintered. In order to reduce the manufacturing costs, it is proposed that in such process the metal powder for forming the wear-resisting layer contains a low-alloy iron powder and 10 to 30% by weight molybdenum and contains a total of 1.5 to 3.0% by weight carbon and phosphorus, carbon and phosphorus are optionally contained as alloying constituents in the iron powder of said metal powder in a total amount of 0.3 to 0.7% by weight, and the shaped member consisting of the body and the wear-resisting layer is subjected to liquid-phase sintering at temperatures from 1070.degree. to 1130.degree. C.
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