GB997339A - Production of thin goss-oriented magnetic iron-silicon alloy sheets - Google Patents

Production of thin goss-oriented magnetic iron-silicon alloy sheets

Info

Publication number
GB997339A
GB997339A GB47883/63A GB4788363A GB997339A GB 997339 A GB997339 A GB 997339A GB 47883/63 A GB47883/63 A GB 47883/63A GB 4788363 A GB4788363 A GB 4788363A GB 997339 A GB997339 A GB 997339A
Authority
GB
United Kingdom
Prior art keywords
sheet
silicon alloy
iron
silicon
goss
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
GB47883/63A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB997339A publication Critical patent/GB997339A/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
    • 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
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/1255—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest with diffusion of elements, e.g. decarburising, nitriding
    • 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
    • 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
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/1272—Final recrystallisation annealing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

Iron-silicon alloy magnetic sheet, 0.0001-0.006 inch thick and composed of secondary recrystallized cube-on-edge oriented grains having an average diameter exceeding twice the sheet thickness, is produced by cold reducing, e.g. rolling, a thick sheet of an iron-silicon alloy containing 2-8% silicon with a reduction of at least 40%, open annealing the surface cleaned and oxide-free cold reduced sheet at 1100-1400 DEG C. in a non-oxidizing atmosphere, such as dry hydrogen or argon, or vacuum such that during recrystallization, the maximum oxygen and sulphur contents in the sheet at least on the surface are 0.001% and 0.00003% respectively. The alloy preferably contains not more than 0.1% Al and less than 0.01% C, and may contain one or more of Mn, Ni, Mo, Cr, Co, Cu totalling 0.1-1.0%. The anneal temperature may be established by passing an electric current through the sheet in a furnace, the walls of which are cooler than the sheet. Alternatively, the sheet may be subjected to an electron beam. Intermediate anneals of 700-1000 DEG C. may be carried out during the cold rolling. U.S.A. Specification 2,473,156 is referred to.
GB47883/63A 1962-12-27 1963-12-04 Production of thin goss-oriented magnetic iron-silicon alloy sheets Expired GB997339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US247531A US3165428A (en) 1962-12-27 1962-12-27 Production of thin goss oriented magnetic materials

Publications (1)

Publication Number Publication Date
GB997339A true GB997339A (en) 1965-07-07

Family

ID=22935257

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47883/63A Expired GB997339A (en) 1962-12-27 1963-12-04 Production of thin goss-oriented magnetic iron-silicon alloy sheets

Country Status (3)

Country Link
US (1) US3165428A (en)
FR (1) FR1397944A (en)
GB (1) GB997339A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374948A2 (en) * 1988-12-22 1990-06-27 Nippon Steel Corporation Very thin electrical steel strip having low core loss and high magnetic flux density and a process for producing the same
US7273952B2 (en) 2000-09-29 2007-09-25 Gruenenthal Gmbh Substituted C-cyclohexylmethylamine derivatives

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2024525B1 (en) * 1970-05-11 1971-12-30 Mannesmann Ag Process for the production of intermediate products from iron-silicon alloys with 4.5 to 7.5% by weight silicon, which are sufficiently ductile for cold working
US3873380A (en) * 1972-02-11 1975-03-25 Allegheny Ludlum Ind Inc Process for making copper-containing oriented silicon steel
US4231818A (en) * 1972-03-30 1980-11-04 Allegheny Ludlum Industries, Inc. Methods of producing silicon steel strip
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
US4608100A (en) * 1983-11-21 1986-08-26 Allegheny Ludlum Steel Corporation Method of producing thin gauge oriented silicon steel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473156A (en) * 1944-11-16 1949-06-14 Armco Steel Corp Process for developing high magnetic permeability and low core loss in very thin silicon steel
GB639252A (en) * 1946-09-24 1950-06-28 Transformer Steels Ltd Heat treatment of magnetic alloys containing iron
US2535420A (en) * 1947-09-10 1950-12-26 Armco Steel Corp Process of producing silicon steel of high-directional permeability
US2765246A (en) * 1955-01-25 1956-10-02 Allegheny Ludlum Steel Process of treating silicon iron strip
BE563544A (en) * 1956-12-31

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374948A2 (en) * 1988-12-22 1990-06-27 Nippon Steel Corporation Very thin electrical steel strip having low core loss and high magnetic flux density and a process for producing the same
EP0374948A3 (en) * 1988-12-22 1993-06-23 Nippon Steel Corporation Very thin electrical steel strip having low core loss and high magnetic flux density and a process for producing the same
US7273952B2 (en) 2000-09-29 2007-09-25 Gruenenthal Gmbh Substituted C-cyclohexylmethylamine derivatives

Also Published As

Publication number Publication date
FR1397944A (en) 1965-05-07
US3165428A (en) 1965-01-12

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