Process for producing articles for magnetic use

Details Process for producing articles for magnetic use Process for producing articles for magnetic use

1988-05-25

1990-08-21

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148103, 148108, C21D 104

Patent

active

049503359

ABSTRACT:
A process and apparatus for producing articles for magnetic use consisting of a metal alloy in the form of a continuous strip (3) from which the articles (33) are cut out, the alloy being subjected to a heat treatment comprising at least one annealing operation carried out in the presence of a magnetic field. The annealing operation is divided into at least two successive phases, respectively a first, initiating phase in the presence of a magnetic field, carried out on the alloy in the form of a continuous strip (3) as it unwinds, and a second phase of ageing carried out on the separated articles (33) obtained from the strip (3) which has undergone the first phase. The invention enables the production of articles, in particular, for the electrotechnical industry.

REFERENCES:
patent: 4093477 (1978-06-01), Iwata et al.
patent: 4194932 (1980-03-01), Iwata
patent: 4311537 (1982-01-01), Chin et al.
Jin, S., et al., "Low Cobalt Cr-Co-Fe Magnet Alloys Obtained by Slow Cooling under Magnetic Field", IEEE Transactions on Magnetics, vol. MAG. 16, No. 3, May 1980, pp. 526-529.

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