Method for the manufacture of tools, machines or parts thereof b

Details Method for the manufacture of tools, machines or parts thereof b Method for the manufacture of tools, machines or parts thereof b

1978-04-20

1980-04-15

Schafer, Richard E.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

294205, 75200, 75208R, 75221, 75226, 428565, B22F 706

Patent

active

041982339

ABSTRACT:
Described herein is a method for the manufacture of materials such as tools, machines or parts thereof composed of at least two sections joined together by composite sintering from sintered alloys with an iron, nickel or cobalt base wherein at least two powdered metallic mixtures having differing metal carbide contents are separately prepared and poured, one after the other, into a mold and then formed into a pressed body; the pressed body is then sintered at the lowest temperature sufficient to cause alloy formation in the mixture having the lowest sintering temperature, and then hot-pressed to complete alloy formation in the pressed body and achieve maximum density.

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patent: 3837068 (1974-09-01), Dunn
patent: 3999954 (1976-12-01), Kolaska et al.
patent: 4049876 (1977-09-01), Yamamoto et al.

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