Process of manufacturing as sintered member having at least one

Details Process of manufacturing as sintered member having at least one Process of manufacturing as sintered member having at least one

1992-06-22

1994-05-10

Nelson, Peter A.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Liquid phase sintering

B22F 300

Patent

active

053105192

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.

REFERENCES:
patent: 4678633 (1987-07-01), Osaki et al.
patent: 5069867 (1991-12-01), Zengin

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