Process for manufacturing a soft magnetic body of an iron-nickel

Details Process for manufacturing a soft magnetic body of an iron-nickel Process for manufacturing a soft magnetic body of an iron-nickel

1992-03-30

1992-09-15

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Controlled cooling after sintering

419 36, 419 37, 419 38, 419 57, 419 58, 419 60, G22F 100

Patent

active

051476010

ABSTRACT:
A composition comprising a powder of iron and nickel and a binder (e.g. wax) is injection molded. The powder contains 0.5 to 10% by weight of nickel and has an average particle diameter not exceeding 45 microns. The binder is removed from the molded product. The molded product is sintered, and the sintered product is cooled to room temperature slowly at a rate of 2.degree. C. to 50.degree. C. per minute. The sintered product is of an iron-nickel alloy, has a high density and a high level of soft ferromagnetic properties, and may be complicated in shape.

REFERENCES:
patent: 4325895 (1982-04-01), Morris
patent: 4615734 (1986-10-01), Spriggs
patent: 4968347 (1990-11-01), Ramish

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