GB571676A - Improvements in or relating to the manufacture of magnetic articles - Google Patents

Improvements in or relating to the manufacture of magnetic articles

Info

Publication number
GB571676A
GB571676A GB1937443A GB1937443A GB571676A GB 571676 A GB571676 A GB 571676A GB 1937443 A GB1937443 A GB 1937443A GB 1937443 A GB1937443 A GB 1937443A GB 571676 A GB571676 A GB 571676A
Authority
GB
United Kingdom
Prior art keywords
per cent
alloy
per
temperatures
magnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1937443A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1937443A priority Critical patent/GB571676A/en
Publication of GB571676A publication Critical patent/GB571676A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0433—Nickel- or cobalt-based alloys

Abstract

571,676. Alloys. STANDARD TELEPHONES & CABLES, Ltd., GRACE, B. B., and MILLS, E. Nov. 19, 1943, No. 19374. [Classes 72 and 82 (i)] [Also in Group XXII] Magnetic articles are made of an alloy of 30-70 per cent iron and 30-70 per cent cobalt, by pressing the powdered alloy or the mixed finely-divided constituents to shape under pressures of from 10-30 tons per square inch at temperatures of from 400‹ C. to 800‹ C. and sintering. Manganese up to 0.75 per cent, vanadium up to 2.75 per cent, silicon and carbon up to 0.2 and 0.8 per cent respectively, may also be included. The density of the product can be increased by cold forging or by hot forging at temperatures of from 500‹ C. to 900‹ C. Heat treatment at 850‹-940‹ C. for about 5 minutes followed by quenching improves the magnetic properties of the product. After quenching the article may be annealed at 780‹-810‹ C. The heat treatment may be carried out in a 50 cycles per second magnetic field which is applied in the same direction as the field to be applied during the use of the article. An atmosphere of towns gas, hydrogen or ammonia may be used to protect the alloy during the heating operations. Specification 404,011 is referred to.
GB1937443A 1943-11-19 1943-11-19 Improvements in or relating to the manufacture of magnetic articles Expired GB571676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1937443A GB571676A (en) 1943-11-19 1943-11-19 Improvements in or relating to the manufacture of magnetic articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1937443A GB571676A (en) 1943-11-19 1943-11-19 Improvements in or relating to the manufacture of magnetic articles

Publications (1)

Publication Number Publication Date
GB571676A true GB571676A (en) 1945-09-04

Family

ID=10128282

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1937443A Expired GB571676A (en) 1943-11-19 1943-11-19 Improvements in or relating to the manufacture of magnetic articles

Country Status (1)

Country Link
GB (1) GB571676A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166408A (en) * 1961-11-16 1965-01-19 Westinghouse Electric Corp Magnetic alloys
US5067993A (en) * 1987-08-19 1991-11-26 Mitsubishi Materials Corporation Magnetic core material made of fe-co base alloy for high frequencies
CN114058798A (en) * 2021-11-26 2022-02-18 上海大学 Flash annealing process and device for La-Fe-Si series alloy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166408A (en) * 1961-11-16 1965-01-19 Westinghouse Electric Corp Magnetic alloys
US5067993A (en) * 1987-08-19 1991-11-26 Mitsubishi Materials Corporation Magnetic core material made of fe-co base alloy for high frequencies
CN114058798A (en) * 2021-11-26 2022-02-18 上海大学 Flash annealing process and device for La-Fe-Si series alloy

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