EP0130674A3 - Process for producing cube-on-edge oriented electromagnetic silicon steel - Google Patents

Process for producing cube-on-edge oriented electromagnetic silicon steel Download PDF

Info

Publication number
EP0130674A3
EP0130674A3 EP84302946A EP84302946A EP0130674A3 EP 0130674 A3 EP0130674 A3 EP 0130674A3 EP 84302946 A EP84302946 A EP 84302946A EP 84302946 A EP84302946 A EP 84302946A EP 0130674 A3 EP0130674 A3 EP 0130674A3
Authority
EP
European Patent Office
Prior art keywords
silicon steel
oriented electromagnetic
electromagnetic silicon
edge oriented
cube
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.)
Withdrawn
Application number
EP84302946A
Other languages
German (de)
French (fr)
Other versions
EP0130674A2 (en
Inventor
Frank Angelo Malagari, Jr.
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.)
Allegheny Ludlum Corp
Original Assignee
Allegheny Ludlum Corp
Allegheny Ludlum Steel 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 Allegheny Ludlum Corp, Allegheny Ludlum Steel Corp filed Critical Allegheny Ludlum Corp
Publication of EP0130674A2 publication Critical patent/EP0130674A2/en
Publication of EP0130674A3 publication Critical patent/EP0130674A3/en
Withdrawn legal-status Critical Current

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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
    • C21D8/1244—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
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing

Landscapes

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

Abstract

A method is provided for producing electromagnetic silicon steel to produce a cube-on-edge grain orientation having lower core losses and higher magnetic permeability. The method includes, during final texture annealing, using a controlled heat­ ing cycle including an isothermal hold at a selected recrystalliza­ tion temperature of about 1650°F (900°C) for 6 to 20 hours to improve secondary recrystallization and the Goss texture (110) [001], then heating the steel from the selected recrystallization temperature to in excess of 2000°F (1093°C).
EP84302946A 1983-07-05 1984-05-02 Process for producing cube-on-edge oriented electromagnetic silicon steel Withdrawn EP0130674A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51084483A 1983-07-05 1983-07-05
US510844 1983-07-05

Publications (2)

Publication Number Publication Date
EP0130674A2 EP0130674A2 (en) 1985-01-09
EP0130674A3 true EP0130674A3 (en) 1985-05-15

Family

ID=24032438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84302946A Withdrawn EP0130674A3 (en) 1983-07-05 1984-05-02 Process for producing cube-on-edge oriented electromagnetic silicon steel

Country Status (3)

Country Link
EP (1) EP0130674A3 (en)
JP (1) JPS6036619A (en)
CA (1) CA1240592A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662954A (en) * 1985-08-13 1987-05-05 Allegheny Ludlum Corporation Method for improving base coating formation on silicon steel by controlling winding tension

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534141A (en) * 1948-01-14 1950-12-12 Gen Electric Heat-treatment of cold rolled silicon steel strip
FR2262703A1 (en) * 1974-02-28 1975-09-26 Kawasaki Steel Co
FR2357660A1 (en) * 1976-07-05 1978-02-03 Kawasaki Steel Co INSULATING FILM OF FORSTERITE FORMED ON THE SURFACE OF A SHEET OF ORIENTED GRAIN SILICON STEEL WITH HIGH MAGNETIC INDUCTION AND PROCESS FOR FORMING THIS FILM
FR2388383A1 (en) * 1977-04-18 1978-11-17 Nippon Steel Corp MAGNETIC SHEET WITH ORIENTED GRAINS HAVING GOOD MAGNETIC PROPERTIES
US4157925A (en) * 1978-04-12 1979-06-12 Allegheny Ludlum Industries, Inc. Texture annealing silicon steel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4213804A (en) * 1979-03-19 1980-07-22 Allegheny Ludlum Industries, Inc. Processing for cube-on-edge oriented silicon steel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534141A (en) * 1948-01-14 1950-12-12 Gen Electric Heat-treatment of cold rolled silicon steel strip
FR2262703A1 (en) * 1974-02-28 1975-09-26 Kawasaki Steel Co
FR2357660A1 (en) * 1976-07-05 1978-02-03 Kawasaki Steel Co INSULATING FILM OF FORSTERITE FORMED ON THE SURFACE OF A SHEET OF ORIENTED GRAIN SILICON STEEL WITH HIGH MAGNETIC INDUCTION AND PROCESS FOR FORMING THIS FILM
FR2388383A1 (en) * 1977-04-18 1978-11-17 Nippon Steel Corp MAGNETIC SHEET WITH ORIENTED GRAINS HAVING GOOD MAGNETIC PROPERTIES
US4157925A (en) * 1978-04-12 1979-06-12 Allegheny Ludlum Industries, Inc. Texture annealing silicon steel

Also Published As

Publication number Publication date
JPH0447010B2 (en) 1992-07-31
JPS6036619A (en) 1985-02-25
EP0130674A2 (en) 1985-01-09
CA1240592A (en) 1988-08-16

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT SE

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): BE DE FR GB IT SE

17P Request for examination filed

Effective date: 19850806

17Q First examination report despatched

Effective date: 19860616

D17Q First examination report despatched (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALLEGHENY LUDLUM CORPORATION

ITF It: translation for a ep patent filed

Owner name: RIT.TO ALL'OEB ALLO STATO DI DOMANDA;FIAMMENGHI -

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19891130

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MALAGARI, FRANK ANGELO, JR.