BR0116245A - Processo para a produção de aço elétrico de grão orientado - Google Patents

Processo para a produção de aço elétrico de grão orientado

Info

Publication number
BR0116245A
BR0116245A BR0116245-4A BR0116245A BR0116245A BR 0116245 A BR0116245 A BR 0116245A BR 0116245 A BR0116245 A BR 0116245A BR 0116245 A BR0116245 A BR 0116245A
Authority
BR
Brazil
Prior art keywords
strip
production
ppm
phases
cold rolling
Prior art date
Application number
BR0116245-4A
Other languages
English (en)
Other versions
BR0116245B1 (pt
Inventor
Stefano Fortunati
Stefano Cicale
Claudia Rocchi
Giuseppe Abbruzzese
Original Assignee
Thyssenkrupp Acciai Speciali
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 Thyssenkrupp Acciai Speciali filed Critical Thyssenkrupp Acciai Speciali
Publication of BR0116245A publication Critical patent/BR0116245A/pt
Publication of BR0116245B1 publication Critical patent/BR0116245B1/pt

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
    • C21D8/1205—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
    • C21D8/1211—Rapid solidification; Thin strip casting
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/004—Dispersions; Precipitations
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
    • C21D8/0426—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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
    • C21D8/0431—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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
    • C21D8/0436—Cold rolling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Soft Magnetic Materials (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Seasonings (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Noodles (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

"PROCESSO PARA PRODUçãO DE TIRAS DE AçO ELéTRICO DE GRãO ORIENTADO". A presente invenção se refere a um processo para produção de tiras de aço elétrico de grão orientado, em que um aço silício compreendendo pelo menos 30 ppm de S é diretamente fundido na forma de uma tira, tendo de 1,5 a 4,5 mm de espessura e laminada a quente para uma espessura final entre 1,0 e 15 mm, caracterizado pelos seguintes estágios: - resfriamento e deformação da tira solidificada para obter uma distribuição das segundas fases, em que 600 cm^ -1^ < Iz < 1500 cm^ -1^ e Iz = 1,9 Fv/r (cm^ -1^), Fv sendo a fração de volume das segundas fases, estável em temperaturas inferiores a 800<198>C e r sendo o raio médio dos precipitados, em cm; - laminação a frio entre a solidificação e o embobinamento da tira, sob uma temperatura não inferior a 750<198>C, com uma taxa de redução entre 15 e 60%; - laminação a frio com taxa de redução de 60 a 92%; - recozimento da tira laminada a quente sob temperatura de 750-1100<198>C, com aumento do teor de nitrogênio de pelo menos 30 ppm em relação à composição inicial no núcleo da tira, em atmosfera de nitruração.
BRPI0116245-4A 2000-12-18 2001-12-17 processo para produção de aço elétrico de grão orientado. BR0116245B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000RM000672A IT1316026B1 (it) 2000-12-18 2000-12-18 Procedimento per la fabbricazione di lamierini a grano orientato.
PCT/EP2001/014879 WO2002050314A2 (en) 2000-12-18 2001-12-17 Process for the production of grain oriented electrical steel strips

Publications (2)

Publication Number Publication Date
BR0116245A true BR0116245A (pt) 2004-01-13
BR0116245B1 BR0116245B1 (pt) 2010-06-01

Family

ID=11455060

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0116245-4A BR0116245B1 (pt) 2000-12-18 2001-12-17 processo para produção de aço elétrico de grão orientado.

Country Status (16)

Country Link
US (1) US6893510B2 (pt)
EP (1) EP1356127B9 (pt)
JP (1) JP2004516381A (pt)
KR (1) KR100830280B1 (pt)
CN (1) CN1242077C (pt)
AT (1) ATE294877T1 (pt)
AU (1) AU2002231713A1 (pt)
BR (1) BR0116245B1 (pt)
CZ (1) CZ20031687A3 (pt)
DE (1) DE60110643T2 (pt)
ES (1) ES2241895T3 (pt)
IT (1) IT1316026B1 (pt)
PL (1) PL199162B1 (pt)
RU (1) RU2285730C2 (pt)
SK (1) SK286629B6 (pt)
WO (1) WO2002050314A2 (pt)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1316029B1 (it) * 2000-12-18 2003-03-26 Acciai Speciali Terni Spa Processo per la produzione di acciaio magnetico a grano orientato.
DE102005052774A1 (de) * 2004-12-21 2006-06-29 Salzgitter Flachstahl Gmbh Verfahren zum Erzeugen von Warmbändern aus Leichtbaustahl
US7736444B1 (en) * 2006-04-19 2010-06-15 Silicon Steel Technology, Inc. Method and system for manufacturing electrical silicon steel
KR100797997B1 (ko) * 2006-12-27 2008-01-28 주식회사 포스코 자성과 생산성이 우수한 방향성 전기강판의 제조방법
KR100817168B1 (ko) * 2006-12-27 2008-03-27 주식회사 포스코 자성이 우수한 방향성 전기강판의 제조방법
IT1396714B1 (it) 2008-11-18 2012-12-14 Ct Sviluppo Materiali Spa Procedimento per la produzione di lamierino magnetico a grano orientato a partire da bramma sottile.
CN102257173B (zh) * 2008-12-16 2013-12-04 新日铁住金株式会社 方向性电磁钢板及其制造方法
KR101614593B1 (ko) * 2009-07-31 2016-04-21 제이에프이 스틸 가부시키가이샤 방향성 전기 강판
US8876990B2 (en) * 2009-08-20 2014-11-04 Massachusetts Institute Of Technology Thermo-mechanical process to enhance the quality of grain boundary networks
JP4840518B2 (ja) * 2010-02-24 2011-12-21 Ｊｆｅスチール株式会社 方向性電磁鋼板の製造方法
DE102011107304A1 (de) * 2011-07-06 2013-01-10 Thyssenkrupp Electrical Steel Gmbh Verfahren zum Herstellen eines kornorientierten, für elektrotechnische Anwendungen bestimmten Elektrostahlflachprodukts
DE102011054004A1 (de) * 2011-09-28 2013-03-28 Thyssenkrupp Electrical Steel Gmbh Verfahren zum Herstellen eines kornorientierten, für elektrotechnische Anwendungen bestimmten Elektrobands oder -blechs
CN102517592A (zh) * 2011-12-13 2012-06-27 武汉钢铁(集团)公司 一种高磁感取向硅钢带渗氮处理方法
KR101625540B1 (ko) * 2012-07-26 2016-05-30 제이에프이 스틸 가부시키가이샤 방향성 전자 강판의 제조 방법
CN104870666B (zh) * 2012-12-28 2017-05-10 杰富意钢铁株式会社 方向性电磁钢板的制造方法和方向性电磁钢板制造用的一次再结晶钢板
KR101633255B1 (ko) 2014-12-18 2016-07-08 주식회사 포스코 방향성 전기강판 및 그 제조방법
CN107630133B (zh) * 2016-07-18 2019-06-28 鞍钢股份有限公司 一种变频特性优良的高牌号电工钢产品的生产方法
KR101947026B1 (ko) * 2016-12-22 2019-02-12 주식회사 포스코 방향성 전기강판 및 이의 제조방법
KR102012319B1 (ko) 2017-12-26 2019-08-20 주식회사 포스코 방향성 전기강판 및 그 제조방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0326912B1 (en) 1988-02-03 1994-07-27 Nippon Steel Corporation Process for production of grain oriented electrical steel sheet having high flux density
US5049204A (en) 1989-03-30 1991-09-17 Nippon Steel Corporation Process for producing a grain-oriented electrical steel sheet by means of rapid quench-solidification process
IT1230313B (it) * 1989-07-07 1991-10-18 Somova Spa Inalatore per medicamenti in capsule.
IT1290978B1 (it) * 1997-03-14 1998-12-14 Acciai Speciali Terni Spa Procedimento per il controllo dell'inibizione nella produzione di lamierino magnetico a grano orientato
IT1290977B1 (it) * 1997-03-14 1998-12-14 Acciai Speciali Terni Spa Procedimento per il controllo dell'inibizione nella produzione di lamierino magnetico a grano orientato
DE69923102T3 (de) 1998-03-30 2015-10-15 Nippon Steel & Sumitomo Metal Corporation Verfahren zur Herstellung eines kornorientierten Elektrobleches mit ausgezeichneten magnetischen Eigenschaften
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

Also Published As

Publication number Publication date
WO2002050314A3 (en) 2002-08-22
DE60110643D1 (de) 2005-06-09
SK7572003A3 (en) 2003-10-07
KR100830280B1 (ko) 2008-05-16
US6893510B2 (en) 2005-05-17
BR0116245B1 (pt) 2010-06-01
CZ20031687A3 (cs) 2004-02-18
DE60110643T2 (de) 2006-02-02
IT1316026B1 (it) 2003-03-26
PL362277A1 (en) 2004-10-18
JP2004516381A (ja) 2004-06-03
PL199162B1 (pl) 2008-08-29
WO2002050314A2 (en) 2002-06-27
RU2285730C2 (ru) 2006-10-20
ATE294877T1 (de) 2005-05-15
EP1356127B9 (en) 2006-01-11
CN1481444A (zh) 2004-03-10
ITRM20000672A1 (it) 2002-06-18
US20040069377A1 (en) 2004-04-15
SK286629B6 (sk) 2009-02-05
EP1356127A2 (en) 2003-10-29
EP1356127B1 (en) 2005-05-04
CN1242077C (zh) 2006-02-15
AU2002231713A1 (en) 2002-07-01
ITRM20000672A0 (it) 2000-12-18
ES2241895T3 (es) 2005-11-01
RU2003122339A (ru) 2005-01-10
KR20030076991A (ko) 2003-09-29

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 17/12/2001, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 14A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2342 DE 24-11-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.