GB1089892A - Ferrous sheets and method for improving the magnetic properties of ferrous sheets - Google Patents

Ferrous sheets and method for improving the magnetic properties of ferrous sheets

Info

Publication number
GB1089892A
GB1089892A GB1360/65A GB136065A GB1089892A GB 1089892 A GB1089892 A GB 1089892A GB 1360/65 A GB1360/65 A GB 1360/65A GB 136065 A GB136065 A GB 136065A GB 1089892 A GB1089892 A GB 1089892A
Authority
GB
United Kingdom
Prior art keywords
max
rolled
iron
stock
cold
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
GB1360/65A
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.)
Armco Inc
Original Assignee
Armco Inc
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 Armco Inc filed Critical Armco Inc
Publication of GB1089892A publication Critical patent/GB1089892A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
    • C21D8/1233—Cold rolling
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment

Abstract

A method of improving the magnetic characteristics of ferromagnetic material comprises processing the material to produce sheet at least 10 mils. thick and having a surface smoothness reading on the profilometer of no more than 5 micro-inches. The material is selected from the following: Magnetic ingot iron, low-alloy steel, non-oriented silicon-iron, cube-on-edge silicon-iron, nickel-iron magnetic alloys and aluminium-iron oriented alloys. Examples are, in per cent by weight: .oriented silicon-iron.Si.2-4 ..C.0.15-0.303 ..Mn.0.50-0.15 ..S.0.03 max ..Al.0.01 max .non-oriented silicon-iron.. ..Si.0.5-5.0 ..C.0.03-0.1 ..Mn.0.3 max ..S.0.03 max ..Al.0.5 max .low alloy steel.C.0.05-0.1 ..Mn.0.15-1.0 ..Si.0.1 max ..S.0.03 max ..P.0.15 max .magnetic ingot iron.C.0.15 ..Mn.0.03 ..Si.0.003 ..S.0.025 ..P.0.005 .nickel-iron.Ni.20-80 e.g. 47-49 ..C.0.3 max ..Mn.0.3-1.0 ..Si.0.7 max ..S.0.02 max ..P.0.02 max ..Al.0.05 max The magnetic characteristics improved are permeability and core loss at high induction from about the knee of the magnetization curve up to saturation. Excitation requirements for establishing surface flux are decreased and permeability at high frequencies is improved. The sheet stock may be hot rolled, pickled and cold rolled with a reduction of less than 10% to impart a smooth surface. If the stock is reduced by cold rolling, smooth rolls are used only for the final pass or passes, reductions of less than 5% being sufficient to produce a smooth surface. The stock may be hot rolled and then cold-rolled in one or more stages with or without intermediate annealing. A final heat treatment will normally be given. For non-oriented stock smooth rolls may be used after the magnetic properties have been developed. For cube-on-edge stock the smoothing should be performed before the ultimate heat treatment for perfecting the orientation. In an example a steel is hot-rolled, coiled as rolled at a temperature not above 1150 DEG F, pickled, de-carburized at 1250-1600 DEG F to reduce the carbon content to no more than 0.005% and cold-rolled with a reduction of 40-80%. A smooth surface was then produced by machining. In a further example cube-on-edge stock was hot-rolled, cold-rolled, annealed, cold-rolled between smooth rolls and heat treated.
GB1360/65A 1964-01-20 1965-01-12 Ferrous sheets and method for improving the magnetic properties of ferrous sheets Expired GB1089892A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US338572A US3347718A (en) 1964-01-20 1964-01-20 Method for improving the magnetic properties of ferrous sheets

Publications (1)

Publication Number Publication Date
GB1089892A true GB1089892A (en) 1967-11-08

Family

ID=23325290

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1360/65A Expired GB1089892A (en) 1964-01-20 1965-01-12 Ferrous sheets and method for improving the magnetic properties of ferrous sheets

Country Status (5)

Country Link
US (1) US3347718A (en)
BE (1) BE658357A (en)
DE (1) DE1489620C3 (en)
GB (1) GB1089892A (en)
SE (1) SE325286B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415696A (en) * 1965-08-16 1968-12-10 Jones & Laughlin Steel Corp Process of producing silicon steel laminations having a very large grain size after final anneal
US3837933A (en) * 1971-03-13 1974-09-24 Foundation Res Inst Electric A Heat treated magnetic material
CA954020A (en) * 1971-04-23 1974-09-03 Uss Engineers And Consultants Low-carbon steel sheets with improved magnetic properties
BE790266A (en) * 1971-10-21 1973-02-15 Cspeli Femmu PROCESS FOR MANUFACTURING COLD ROLLED ELECTROMAGNETIC STEEL STRIPS AND SHEETS
US3935038A (en) * 1971-10-28 1976-01-27 Nippon Steel Corporation Method for manufacturing non-oriented electrical steel sheet and strip having no ridging
US3868278A (en) * 1972-02-22 1975-02-25 Westinghouse Electric Corp Doubly oriented cobalt iron alloys
US3892604A (en) * 1972-02-22 1975-07-01 Westinghouse Electric Corp Method of producing normal grain growth (110) {8 001{9 {0 textured iron-cobalt alloys
BE795763A (en) * 1972-02-22 1973-08-22 Westinghouse Electric Corp FERROUS ALLOYS AND METHODS FOR MAKING SUCH ALLOYS
US3881967A (en) * 1972-02-22 1975-05-06 Westinghouse Electric Corp High saturation cobalt-iron magnetic alloys and method of preparing same
US3892605A (en) * 1972-02-22 1975-07-01 Westinghouse Electric Corp Method of producing primary recrystallized textured iron alloy member having an open gamma loop
US3902930A (en) * 1972-03-13 1975-09-02 Nippon Musical Instruments Mfg Method of manufacturing iron-silicon-aluminum alloy particularly suitable for magnetic head core
US3971678A (en) * 1972-05-31 1976-07-27 Stahlwerke Peine-Salzgitter Aktiengesellschaft Method of making cold-rolled sheet for electrical purposes
US3819426A (en) * 1972-07-31 1974-06-25 Nat Steel Corp Process for producing non-silicon bearing electrical steel
JPS5410922B2 (en) * 1972-12-19 1979-05-10
JPS5224499B2 (en) * 1973-01-22 1977-07-01
US3873381A (en) * 1973-03-01 1975-03-25 Armco Steel Corp High permeability cube-on-edge oriented silicon steel and method of making it
AT339940B (en) * 1973-11-05 1977-11-10 Voest Ag PROCESS FOR MANUFACTURING COLD-ROLLED SILICON ALLOY ELECTRIC SHEETS
JPS5423647B2 (en) * 1974-04-25 1979-08-15
US4000015A (en) * 1975-05-15 1976-12-28 Allegheny Ludlum Industries, Inc. Processing for cube-on-edge oriented silicon steel using hydrogen of controlled dew point
KR840000668A (en) * 1981-08-24 1984-02-25 원본미기재 Method for producing oriented silicon steel with improved magnetic properties
CN110819879A (en) * 2019-11-22 2020-02-21 马鞍山钢铁股份有限公司 Non-oriented silicon steel with excellent magnetic property and manufacturing method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1619399A (en) * 1921-02-14 1927-03-01 Westinghouse Electric & Mfg Co Production of thin steel
US3090711A (en) * 1959-07-06 1963-05-21 Armco Steel Corp Procedure for secondary recrystallization

Also Published As

Publication number Publication date
BE658357A (en) 1965-04-30
DE1489620C3 (en) 1973-11-15
SE325286B (en) 1970-06-29
DE1489620A1 (en) 1969-05-14
US3347718A (en) 1967-10-17
DE1489620B2 (en) 1973-04-19

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