Soft magnetic alloy for clock-making

Details Soft magnetic alloy for clock-making Soft magnetic alloy for clock-making

2007-03-27

2007-03-27

Sheehan, John P. (Department: 1742)

Metal treatment

Stock

Magnetic

C148S306000, C148S307000, C148S309000, C148S310000, C148S315000, C420S094000, C420S095000, C420S096000, C420S097000, C420S098000

Reexamination Certificate

active

10502946

ABSTRACT:
The invention relates to a soft magnetic alloy with the following composition in wt. %: 28%≦Ni≦34%, 0%≦Co≦4%, 0%≦Cu≦4%, 1%≦Cr, 0%≦Mo≦8%, 0%≦Nb≦1%, 0%≦Mn≦2%, 0%≦V≦5%, 0%≦W≦5%, 0%≦Si≦4%, 0%≦Al≦4%, 0%≦C≦0.4%, optionally one or several elements selected from magnesium and calcium the content of which is such as to remain below 0.1%, the rest being iron and impurities from production. The chemical composition furthermore satisfies the following relationships: 180.5≦6×Ni2.5×(Cr+Mo+V+W+Si+Al)+4×(Co+Cu)≦197.5 et Co+Cu≦4%. The invention relates to the use thereof for production of a stator for use in a motor for clock-making.

REFERENCES:
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patent: 6190465 (2001-02-01), Coutu et al.
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Patent Abstracts of Japan, vol. 15, No. 263, Jul. 4, 1991 & JP 03 090545 (Aichi Steel Works Ltd.) Apr. 16, 1991.
Patent Abstracts of Japan, vol. 2000, No. 4, Aug. 31, 2000 & JP 2000 008148 (Daido Steel Co., Ltd; Tohoku Tokushuko KK; Jan. 11, 2000.

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