DE69615429T2 - Process for the production of grain-oriented electrical steel sheets for transformers - Google Patents

Process for the production of grain-oriented electrical steel sheets for transformers

Info

Publication number
DE69615429T2
DE69615429T2 DE69615429T DE69615429T DE69615429T2 DE 69615429 T2 DE69615429 T2 DE 69615429T2 DE 69615429 T DE69615429 T DE 69615429T DE 69615429 T DE69615429 T DE 69615429T DE 69615429 T2 DE69615429 T2 DE 69615429T2
Authority
DE
Germany
Prior art keywords
electrical steel
transformers
grain
production
steel sheets
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 - Lifetime
Application number
DE69615429T
Other languages
German (de)
Other versions
DE69615429D1 (en
Inventor
Jean-Claude Bavay
Luc Poissonnet
Jacques Castel
Freddy Messeant
Nadine Blanchot
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.)
UGO ISBERGUES
Original Assignee
UGO ISBERGUES
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 UGO ISBERGUES filed Critical UGO ISBERGUES
Application granted granted Critical
Publication of DE69615429D1 publication Critical patent/DE69615429D1/en
Publication of DE69615429T2 publication Critical patent/DE69615429T2/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
    • 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
    • C21D8/1205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular fabrication or treatment of ingot or slab
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C21D8/1255—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
    • C21D8/1244—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
    • 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
    • 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
    • C21D8/1227—Warm 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
    • C21D8/1266—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 between cold rolling steps
    • 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
    • C21D8/1283—Application of a separating or insulating coating

Landscapes

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

Abstract

Electrical steel sheet is made by concasting steel of composition in wt. %:- 0.02-0.09 C; 2.5-4 Si; 0.027-0.17 Mn; 0.007-0.02 S; 0.01-0.03 Al; 0.004-0.012 N; 0.06-5 Cu; balance Fe and impurities. The concast slab or strip is reheated to 1200-1300 deg. C before being hot rolled to a thickness of 1-5 mm and then coiled at 500-700 deg. C. The strip is then cold rolled to below 0.5 mm, annealed to produce a primary recrystallisation and a decarburisation in a moist atmosphere and then coated with MgO. Finally it is annealed to produce a secondary recrystallisation and coated with an insulation layer which is fired.
DE69615429T 1995-03-14 1996-03-08 Process for the production of grain-oriented electrical steel sheets for transformers Expired - Lifetime DE69615429T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9502916A FR2731713B1 (en) 1995-03-14 1995-03-14 PROCESS FOR THE MANUFACTURE OF A SHEET OF ELECTRIC STEEL WITH ORIENTED GRAINS FOR THE PRODUCTION OF MAGNETIC TRANSFORMER CIRCUITS IN PARTICULAR

Publications (2)

Publication Number Publication Date
DE69615429D1 DE69615429D1 (en) 2001-10-31
DE69615429T2 true DE69615429T2 (en) 2002-06-20

Family

ID=9476993

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69615429T Expired - Lifetime DE69615429T2 (en) 1995-03-14 1996-03-08 Process for the production of grain-oriented electrical steel sheets for transformers

Country Status (13)

Country Link
EP (1) EP0732413B1 (en)
JP (1) JPH10500454A (en)
KR (1) KR970702932A (en)
CN (1) CN1148411A (en)
AT (1) ATE206171T1 (en)
BR (1) BR9605937A (en)
CZ (1) CZ284873B6 (en)
DE (1) DE69615429T2 (en)
ES (1) ES2161988T3 (en)
FR (1) FR2731713B1 (en)
PL (1) PL317155A1 (en)
PT (1) PT732413E (en)
WO (1) WO1996028576A1 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19628137C1 (en) * 1996-07-12 1997-04-10 Thyssen Stahl Ag Grain-oriented electrical steel sheet prodn.
DE19628136C1 (en) * 1996-07-12 1997-04-24 Thyssen Stahl Ag Production of grain-orientated electrical sheets
IT1290171B1 (en) * 1996-12-24 1998-10-19 Acciai Speciali Terni Spa PROCEDURE FOR THE TREATMENT OF SILICON, GRAIN ORIENTED STEEL.
IT1290978B1 (en) * 1997-03-14 1998-12-14 Acciai Speciali Terni Spa PROCEDURE FOR CHECKING THE INHIBITION IN THE PRODUCTION OF GRAIN ORIENTED MAGNETIC SHEET
IT1290977B1 (en) * 1997-03-14 1998-12-14 Acciai Speciali Terni Spa PROCEDURE FOR CHECKING THE INHIBITION IN THE PRODUCTION OF GRAIN ORIENTED MAGNETIC SHEET
FR2761081B1 (en) * 1997-03-21 1999-04-30 Usinor METHOD FOR MANUFACTURING AN ELECTRIC STEEL SHEET WITH ORIENTED GRAINS FOR THE MANUFACTURE, IN PARTICULAR OF MAGNETIC CIRCUITS OF TRANSFORMERS
AU2698897A (en) * 1997-04-16 1998-11-11 Acciai Speciali Terni S.P.A. New process for the production of grain oriented electrical steel from thin slabs
AU2701197A (en) * 1997-04-24 1998-12-11 Acciai Speciali Terni S.P.A. New process for the production of high-permeability electrical steel fr om thin slabs
DE19816158A1 (en) * 1998-04-09 1999-10-14 G K Steel Trading Gmbh Process for the production of grain-oriented anisotropic, electrotechnical steel sheets
KR100658408B1 (en) * 1998-10-27 2006-12-15 제이에프이 스틸 가부시키가이샤 An electromagnetic steel sheet having superior formability and magnetic properties and a process for the production of the same
EP1162280B1 (en) * 2000-06-05 2013-08-07 Nippon Steel & Sumitomo Metal Corporation Method for producing a grain-oriented electrical steel sheet excellent in magnetic properties
IT1316029B1 (en) * 2000-12-18 2003-03-26 Acciai Speciali Terni Spa ORIENTED GRAIN MAGNETIC STEEL PRODUCTION PROCESS.
CN100389222C (en) * 2005-12-13 2008-05-21 武汉钢铁(集团)公司 Production method for improving electromagnetic performance and bottom layer quality of copper containing orientation silicium steel
CN101545072B (en) * 2008-03-25 2012-07-04 宝山钢铁股份有限公司 Method for producing oriented silicon steel having high electromagnetic performance
CN101643881B (en) * 2008-08-08 2011-05-11 宝山钢铁股份有限公司 Method for producing silicon steel with orientedgrain including copper
IT1396714B1 (en) * 2008-11-18 2012-12-14 Ct Sviluppo Materiali Spa PROCEDURE FOR THE PRODUCTION OF MAGNETIC SHEET WITH ORIENTED GRAIN FROM THE THIN BRAMMA.
JP5353234B2 (en) * 2008-12-26 2013-11-27 Ｊｆｅスチール株式会社 Method for producing grain-oriented electrical steel sheet
JP5434438B2 (en) * 2009-09-30 2014-03-05 Ｊｆｅスチール株式会社 Manufacturing method of unidirectional electrical steel sheet
BR112012031466B1 (en) * 2010-06-10 2019-07-09 Tata Steel Ijmuiden Bv METHOD OF PRODUCING AN EXCELLENT AUSTENTIC STEEL SHEET IN RESISTANCE TO DELAYED FRACTURE AND STRIP OR SHEET
CN102071303B (en) * 2011-01-30 2012-11-21 中冶南方(武汉)威仕工业炉有限公司 Strip threading method of strip steel in silicon steel continuous annealing drying furnace
CN103667602B (en) * 2013-11-26 2015-04-08 山西太钢不锈钢股份有限公司 Method for increasing nitrogen for RH refined molten steel of grain-oriented electrical steel
CZ305521B6 (en) * 2014-05-12 2015-11-11 Arcelormittal Ostrava A.S. Strip of oriented transformer steel and process for producing thereof
CN106048411A (en) * 2016-06-27 2016-10-26 马鞍山钢铁股份有限公司 Cold-rolled oriented electrical steel for transformer and production method of cold-rolled oriented electrical steel
CN111020140A (en) * 2019-12-17 2020-04-17 无锡晶龙华特电工有限公司 Magnesium oxide annealing separant for oriented silicon steel with excellent magnetism and coating process thereof
CN112522609B (en) * 2020-11-18 2021-12-14 武汉钢铁有限公司 High magnetic induction oriented silicon steel containing composite inhibitor and production method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3671337A (en) * 1969-02-21 1972-06-20 Nippon Steel Corp Process for producing grain oriented electromagnetic steel sheets having excellent magnetic characteristics
US3855018A (en) * 1972-09-28 1974-12-17 Allegheny Ludlum Ind Inc Method for producing grain oriented silicon steel comprising copper
AR208355A1 (en) * 1975-02-13 1976-12-20 Allegheny Ludlum Ind Inc PROCEDURE FOR PRODUCING SILICONE ELECTROMAGNETIC STEEL
GB2130241B (en) * 1982-09-24 1986-01-15 Nippon Steel Corp Method for producing a grain-oriented electrical steel sheet having a high magnetic flux density
JPS60197819A (en) * 1984-03-22 1985-10-07 Nippon Steel Corp Production of thin grain-oriented electrical steel sheet having high magnetic flux density
KR930004849B1 (en) * 1991-07-12 1993-06-09 포항종합제철 주식회사 Electrcal steel sheet having a good magnetic property and its making process
DE4311151C1 (en) * 1993-04-05 1994-07-28 Thyssen Stahl Ag Grain-orientated electro-steel sheets with good properties

Also Published As

Publication number Publication date
KR970702932A (en) 1997-06-10
PT732413E (en) 2002-03-28
EP0732413A1 (en) 1996-09-18
FR2731713A1 (en) 1996-09-20
WO1996028576A1 (en) 1996-09-19
CZ284873B6 (en) 1999-03-17
JPH10500454A (en) 1998-01-13
CZ368496A3 (en) 1997-04-16
EP0732413B1 (en) 2001-09-26
DE69615429D1 (en) 2001-10-31
CN1148411A (en) 1997-04-23
ES2161988T3 (en) 2001-12-16
PL317155A1 (en) 1997-03-17
BR9605937A (en) 1997-08-12
ATE206171T1 (en) 2001-10-15
FR2731713B1 (en) 1997-04-11

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Legal Events

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8328 Change in the person/name/address of the agent

Representative=s name: HAFT - KARAKATSANIS PATENTANWALTSKANZLEI, 80802 MU