EP0378131A3 - A method of manufacturing a grain-oriented electrical steel strip - Google Patents

A method of manufacturing a grain-oriented electrical steel strip Download PDF

Info

Publication number
EP0378131A3
EP0378131A3 EP19900100231 EP90100231A EP0378131A3 EP 0378131 A3 EP0378131 A3 EP 0378131A3 EP 19900100231 EP19900100231 EP 19900100231 EP 90100231 A EP90100231 A EP 90100231A EP 0378131 A3 EP0378131 A3 EP 0378131A3
Authority
EP
European Patent Office
Prior art keywords
grain
manufacturing
steel strip
electrical steel
oriented electrical
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.)
Granted
Application number
EP19900100231
Other languages
German (de)
French (fr)
Other versions
EP0378131B1 (en
EP0378131A2 (en
Inventor
Nobuyuki c/o R & D Laboratories-III Takahashi
Yasunari c/o R & D Laboratories-III Yoshitomi
Tadashi c/o R & D Laboratories-III Nakayama
Yoshiyuki c/o R & D Laboratories-III Ushigami
Yozo c/o R & D Laboratories-III Suga
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.)
Nippon Steel Corp
Original Assignee
Nippon 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
Priority claimed from JP1001778A external-priority patent/JPH0832929B2/en
Priority claimed from JP1086502A external-priority patent/JPH0684524B2/en
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of EP0378131A2 publication Critical patent/EP0378131A2/en
Publication of EP0378131A3 publication Critical patent/EP0378131A3/en
Application granted granted Critical
Publication of EP0378131B1 publication Critical patent/EP0378131B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
    • C21D3/02—Extraction of non-metals
    • C21D3/04—Decarburising
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • 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
    • C21D8/1216—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
    • C21D8/1222—Hot 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
    • C21D8/1216—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)
  • 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

Provided is a method of manufacturing a grain-­ oriented electrical steel strip having excellent magnetic properties, that is, high magnetic flux density in particular, which is characterized in that the average diameter d of grain (primary recrystallization grain) of a material before final annealing is set to a value greater than 15 µm and the coefficient σ* of deviation in grain diameter is set to a value less than 0.6.
According to the present invention, the aggregation to the {110}<001> orientation of a product can be made to be remarkably high so as to obtain a product having a high magnetic flux density B₈ which is equal to or greater than 1.88 tesla.
EP90100231A 1989-01-07 1990-01-05 A method of manufacturing a grain-oriented electrical steel strip Expired - Lifetime EP0378131B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1778/89 1989-01-07
JP1001778A JPH0832929B2 (en) 1989-01-07 1989-01-07 Method for producing unidirectional electrical steel sheet with excellent magnetic properties
JP1086502A JPH0684524B2 (en) 1989-04-05 1989-04-05 Primary recrystallization annealing method for grain-oriented electrical steel sheet
JP86502/89 1989-04-05

Publications (3)

Publication Number Publication Date
EP0378131A2 EP0378131A2 (en) 1990-07-18
EP0378131A3 true EP0378131A3 (en) 1992-09-30
EP0378131B1 EP0378131B1 (en) 1997-05-28

Family

ID=26335068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100231A Expired - Lifetime EP0378131B1 (en) 1989-01-07 1990-01-05 A method of manufacturing a grain-oriented electrical steel strip

Country Status (2)

Country Link
EP (1) EP0378131B1 (en)
DE (1) DE69030771T2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5472521A (en) * 1933-10-19 1995-12-05 Nippon Steel Corporation Production method of grain oriented electrical steel sheet having excellent magnetic characteristics
JP2519615B2 (en) * 1991-09-26 1996-07-31 新日本製鐵株式会社 Method for producing grain-oriented electrical steel sheet with excellent magnetic properties
JP2620438B2 (en) * 1991-10-28 1997-06-11 新日本製鐵株式会社 Manufacturing method of grain-oriented electrical steel sheet with high magnetic flux density
JP2659655B2 (en) * 1992-09-04 1997-09-30 新日本製鐵株式会社 Thick grain-oriented electrical steel sheet with excellent magnetic properties
US6858095B2 (en) 1992-09-04 2005-02-22 Nippon Steel Corporation Thick grain-oriented electrical steel sheet exhibiting excellent magnetic properties
US5665178A (en) * 1995-02-13 1997-09-09 Kawasaki Steel Corporation Method of manufacturing grain-oriented silicon steel sheet having excellent magnetic characteristics
KR100241167B1 (en) * 1995-04-18 2000-03-02 에모토 간지 Hot-rolling method of steel piece joint during continuous hot-rolling
DE69923102T3 (en) * 1998-03-30 2015-10-15 Nippon Steel & Sumitomo Metal Corporation Process for producing a grain-oriented electrical steel sheet having excellent magnetic properties
KR100501002B1 (en) * 2000-05-24 2005-07-18 주식회사 포스코 A method for manufacturing grain oriented electric steel sheet
KR100501003B1 (en) * 2000-06-16 2005-07-18 주식회사 포스코 A method for manufacturing grain oriented electric steel sheet
DE102011107304A1 (en) * 2011-07-06 2013-01-10 Thyssenkrupp Electrical Steel Gmbh Method for producing a grain-oriented electrical steel flat product intended for electrotechnical applications
CN110457729B (en) * 2019-05-17 2023-04-14 陕西飞机工业（集团）有限公司 Optimization method and device for semi-closed structural steel heat treatment part and shaft part

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2599340A (en) * 1948-10-21 1952-06-03 Armco Steel Corp Process of increasing the permeability of oriented silicon steels
US2867559A (en) * 1956-12-31 1959-01-06 Gen Electric Method for producing grain oriented silicon steel
US3287183A (en) * 1964-06-22 1966-11-22 Yawata Iron & Steel Co Process for producing single-oriented silicon steel sheets having a high magnetic induction
BE688060A (en) * 1966-10-10 1967-04-10
US3932234A (en) * 1972-10-13 1976-01-13 Kawasaki Steel Corporation Method for manufacturing single-oriented electrical steel sheets comprising antimony and having a high magnetic induction
EP0098324A1 (en) * 1982-07-08 1984-01-18 Nippon Steel Corporation Process for producing aluminum-bearing grain-oriented silicon steel strip
US4770720A (en) * 1984-11-10 1988-09-13 Nippon Steel Corporation Method for producing a grain-oriented electrical steel sheet having a low watt-loss
EP0219611B1 (en) * 1985-08-15 1990-05-16 Nippon Steel Corporation Method for producing a grain-oriented electrical steel sheet

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3882502T2 (en) * 1987-11-20 1993-11-11 Nippon Steel Corp Process for the production of grain-oriented electrical steel sheets with high flux density.
DE68916980T2 (en) * 1988-02-03 1994-11-17 Nippon Steel Corp Process for producing grain-oriented electrical steel sheets with high flux density.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2599340A (en) * 1948-10-21 1952-06-03 Armco Steel Corp Process of increasing the permeability of oriented silicon steels
US2867559A (en) * 1956-12-31 1959-01-06 Gen Electric Method for producing grain oriented silicon steel
US3287183A (en) * 1964-06-22 1966-11-22 Yawata Iron & Steel Co Process for producing single-oriented silicon steel sheets having a high magnetic induction
BE688060A (en) * 1966-10-10 1967-04-10
US3932234A (en) * 1972-10-13 1976-01-13 Kawasaki Steel Corporation Method for manufacturing single-oriented electrical steel sheets comprising antimony and having a high magnetic induction
EP0098324A1 (en) * 1982-07-08 1984-01-18 Nippon Steel Corporation Process for producing aluminum-bearing grain-oriented silicon steel strip
US4770720A (en) * 1984-11-10 1988-09-13 Nippon Steel Corporation Method for producing a grain-oriented electrical steel sheet having a low watt-loss
EP0219611B1 (en) * 1985-08-15 1990-05-16 Nippon Steel Corporation Method for producing a grain-oriented electrical steel sheet

Also Published As

Publication number Publication date
EP0378131B1 (en) 1997-05-28
DE69030771D1 (en) 1997-07-03
EP0378131A2 (en) 1990-07-18
DE69030771T2 (en) 1997-09-11

Similar Documents

Publication Publication Date Title
CA1103567A (en) Method of producing non-oriented silicon steel sheets having an excellent electromagnetic property
EP0378131A3 (en) A method of manufacturing a grain-oriented electrical steel strip
CA2146814A1 (en) Transverse magnetic field annealed amorphous magnetomechanical elements for use in electronic article surveillance system and method of making same
US5496419A (en) Wear-resistant high permeability magnetic alloy and method of manufacturing the same
ES2182556T3 (en) METHOD FOR RECOVERING AN AMORFA ALLOY AND METHOD FOR MANUFACTURING A MARKER.
US3849212A (en) Primary recrystallized textured iron alloy member having an open gamma loop
US3892605A (en) Method of producing primary recrystallized textured iron alloy member having an open gamma loop
EP0234790B1 (en) Permanent magnetic alloy comprising gold, platinum and cobalt
US4265681A (en) Method of producing low loss pressed magnetic cores from microlaminations
KR890004781A (en) Hot rolled steel sheet and manufacturing method
US3089795A (en) Method for producing fiber texture and cube-texture sheets of iron-base alloys
JPS6431922A (en) Manufacture of fe-base magnetic alloy
US3868278A (en) Doubly oriented cobalt iron alloys
CA2006292A1 (en) Very thin electrical steel strip having low core loss and high magnetic flux density and a process for producing the same
US3144363A (en) Process for producing oriented silicon steel and the product thereof
JPS5677356A (en) Amorphous alloy for strain gauge material
US3124491A (en) Heavy gauge double oriented magnetic sheet material
EP0034058B1 (en) Method of making permanent magnet of mn-al-c alloy
Nakano et al. Reduction of iron loss in thin grain-oriented silicon steel sheets
EP0074715B1 (en) Method for producing oriented silicon steel having improved magnetic properties
US4608100A (en) Method of producing thin gauge oriented silicon steel
EP0095831A3 (en) Amorphous metals and articles made thereof
ES479337A1 (en) Process for producing Ni-Fe magnetic tape cores
Titorov Permitted Cube-on-Edge Textures in the Fe+ 3% Si Alloy[[Previously Titled: Allowed Cube-on-Edge Textures in the Alloy Fe-3% Si.]]
Dorofeeva The Magnetic Anisotropy of Amorphous Iron Base Metallic Alloys

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

Kind code of ref document: A2

Designated state(s): DE FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT SE

17P Request for examination filed

Effective date: 19921209

17Q First examination report despatched

Effective date: 19940727

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

REF Corresponds to:

Ref document number: 69030771

Country of ref document: DE

Date of ref document: 19970703

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20080128

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090102

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20081231

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20090108

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090113

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20100104

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20100104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20100105