EP1662010A1 - Warmgewalztes Stahlband zur Herstellung von gestapelten magnetischen Kernblechen - Google Patents

Warmgewalztes Stahlband zur Herstellung von gestapelten magnetischen Kernblechen Download PDF

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Publication number
EP1662010A1
EP1662010A1 EP04425877A EP04425877A EP1662010A1 EP 1662010 A1 EP1662010 A1 EP 1662010A1 EP 04425877 A EP04425877 A EP 04425877A EP 04425877 A EP04425877 A EP 04425877A EP 1662010 A1 EP1662010 A1 EP 1662010A1
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EP
European Patent Office
Prior art keywords
steel strip
strip according
fact
parallelism
silicon
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
EP04425877A
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English (en)
French (fr)
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EP1662010B1 (de
Inventor
Giovanni Arvedi
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Individual
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Individual
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34932906&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1662010(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to PT04425877T priority Critical patent/PT1662010E/pt
Priority to AT04425877T priority patent/ATE420214T1/de
Priority to DK04425877T priority patent/DK1662010T3/da
Priority to PL04425877T priority patent/PL1662010T3/pl
Priority to RSP-2009/0056A priority patent/RS51272B/sr
Priority to EP04425877A priority patent/EP1662010B1/de
Priority to DE602004018942T priority patent/DE602004018942D1/de
Priority to ES04425877T priority patent/ES2316949T3/es
Priority to SI200431016T priority patent/SI1662010T1/sl
Application filed by Individual filed Critical Individual
Publication of EP1662010A1 publication Critical patent/EP1662010A1/de
Publication of EP1662010B1 publication Critical patent/EP1662010B1/de
Application granted granted Critical
Priority to HR20090096T priority patent/HRP20090096T3/xx
Anticipated expiration legal-status Critical
Revoked 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the working steps
    • C21D8/1238—Flattening; Dressing; Flexing
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1205—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving particular fabrication steps or treatments of ingots or slabs
    • 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties characterised by the working steps
    • C21D8/1222—Hot rolling
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C21D2211/005—Ferrite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14766—Fe-Si based alloys
    • H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust

Definitions

  • the present invention relates to a low carbon hot rolled steel strip having such features that it can replace, in producing cut lamination packs, such as stators and rotors of electric motors, the cold rolled strips till now used for these utilizations.
  • WO2004/013365 and EP1411138 disclose non-oriented grain magnetic strips provided with special chemical-physical features that, upon cold rolling and annealing treatment, render the same suitable to be used for producing, after cutting, lamination packs such as stators and rotors of electric motors.
  • the strip according to the present invention is preferably, although not exclusively, manufactured by means of in-line systems of the "thin-slab" type, like the one described in the international publication WO 2004/026497 in the name of the same applicant, as schematically represented in Fig. 5, and this characterized, as set forth in claim 1, by a low silicon content (lower than 0.03 %) and a structure the fineness of which is higher than grade 9 of the ASTM E 112 standard, with a thickness comprised between 0.65 and 1.5 mm, a parallelism rate ⁇ 0.02 mm and a roughness ⁇ 1.3 ⁇ m.
  • the mean thickness is preferably of 0.65 - 1.0 mm with strict tolerances of ⁇ 0.05 mm, whereas the parallelism is preferably even less than 0.01 mm.
  • the hardness of the strip according to the present invention can reach values of HRB 55/70 or HV110/140.
  • the particular roughness ⁇ 1.3 ⁇ m of the strip is helpful to prevent the cut pieces from closely joining together when packed to form a multilayer, thanks to the air being present in the gaps caused by the roughness, and in general the above-described features make this type of hot rolled strip particularly suitable to a fine cutting without any need of having to trim and straighten the cut pieces, thereby rendering them ready for the subsequent packing steps, which in general are carried out in-line and automatically, thus eliminating the trimming and straightening operations which are required in the traditional systems.
  • the hot rolled steel strip according to the present invention can replace, without annealing treatment, the cold rolled strips for producing, upon cutting, lamination packs of magnetic sheets.
  • the thickness of said steel strip is of 0.65-1.5 mm, preferably 0.65-1.0 mm with strict tolerances of ⁇ 0.05 mm and parallelism rate ⁇ 0.02, preferably 0.01 mm.
  • the strip according to the prior art is characterized by a silicon content > 0.5 % and a ferritic grain with fineness lower than grade 7 of ASTM E 112 standard to enhance the magnetic permeability
  • the strip according to the invention shows magnetic features comparable with those of non-oriented grain silicon-based strips being hot rolled and subsequently annealed to increase the size of the ferritic grain. This appears to be due to the substantial uniformity of the ferritic grain, wherein the 70% of the grains show a fineness grade comprised between levels 9 and 12 of the above-mentioned ASTM standard, thus rendering particularly permeable the magnetism of the same strip.
  • the grain size plays a basic role concerning the magnetic permeability of the steel, experimental tests have in fact shown that in this respect the feature of the grain uniformity is also very important, irrespective of its size.
  • the feature of uniformity of the ferritic grain which is fine and particularly homogeneous, descends also in particular from the microphotograph magnified one thousand times as represented in figure 2.
  • packing factor which is defined as a ratio between the weight of a multilayer packet of regular shape (P) and that of a solid steel block having the same size (P').
  • the strip according to the present invention is produced in a plant such as the one schematically illustrated in figure 5, for the continuous hot rolling, such as of the type being the object of publication WO2004/026497, from which the strip according to the present invention can be obtained with the above indicated features.
  • the lower portion of the lay-out relates to the possible operations of pickling and skinpassing to which the strip from the rolling step can be subjected, thus being able to reach hardness values corresponding to HRB 55/70 or HV 110/140.
  • Another advantage of the steel according to the invention is that of avoiding the critical state of the traditional non-oriented grain silicon steel, the slabs of which must be heated at temperatures higher (by about 200°C) than requested by the other steels which do not include silicon and must be cooled more slowly with a controlled process before the subsequent rolling step to avoid cracks on the slab itself.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Soft Magnetic Materials (AREA)
  • Hard Magnetic Materials (AREA)
EP04425877A 2004-11-24 2004-11-24 Warmgewalztes magnetisches Stahlband zur Herstellung von gestapelten magnetischen Kernblechen Revoked EP1662010B1 (de)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE602004018942T DE602004018942D1 (de) 2004-11-24 2004-11-24 Warmgewalztes magnetisches Stahlband zur Herstellung von gestapelten magnetischen Kernblechen
DK04425877T DK1662010T3 (da) 2004-11-24 2004-11-24 Magnetisk varmvalset st lb nd, som er s rligt velegnet til fremstilling af elektromagnetiske udvalsede pakker
PL04425877T PL1662010T3 (pl) 2004-11-24 2004-11-24 Walcowana na gorąco taśma ze stali magnetycznej, szczególnie nadająca się do produkcji elektromagnetycznych elementów uwarstwionych
RSP-2009/0056A RS51272B (sr) 2004-11-24 2004-11-24 Toplo valjane magnetne čelične trake posebno pogodne za proizvodnju elektromagnetnih slojevitih paketa
EP04425877A EP1662010B1 (de) 2004-11-24 2004-11-24 Warmgewalztes magnetisches Stahlband zur Herstellung von gestapelten magnetischen Kernblechen
ES04425877T ES2316949T3 (es) 2004-11-24 2004-11-24 Chapa de acero megnetico laminada en caliente particularmente adecuada para la fabricacion de paquetes de chapas electromagneticas.
PT04425877T PT1662010E (pt) 2004-11-24 2004-11-24 Banda de aço magnética laminada a quente particularmente apropriada para a produção de pactotes de laminação electromagnética
SI200431016T SI1662010T1 (sl) 2004-11-24 2004-11-24 Magnetni toplo valjani jekleni trak, predvsem uporaben za izdelavo elektromagnetnih lamelnih paketov
AT04425877T ATE420214T1 (de) 2004-11-24 2004-11-24 Warmgewalztes magnetisches stahlband zur herstellung von gestapelten magnetischen kernblechen
HR20090096T HRP20090096T3 (en) 2004-11-24 2009-02-16 Magnetic hot rolled steel strip particularly suited for the production of electromagnetic lamination packs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04425877A EP1662010B1 (de) 2004-11-24 2004-11-24 Warmgewalztes magnetisches Stahlband zur Herstellung von gestapelten magnetischen Kernblechen

Publications (2)

Publication Number Publication Date
EP1662010A1 true EP1662010A1 (de) 2006-05-31
EP1662010B1 EP1662010B1 (de) 2009-01-07

Family

ID=34932906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04425877A Revoked EP1662010B1 (de) 2004-11-24 2004-11-24 Warmgewalztes magnetisches Stahlband zur Herstellung von gestapelten magnetischen Kernblechen

Country Status (10)

Country Link
EP (1) EP1662010B1 (de)
AT (1) ATE420214T1 (de)
DE (1) DE602004018942D1 (de)
DK (1) DK1662010T3 (de)
ES (1) ES2316949T3 (de)
HR (1) HRP20090096T3 (de)
PL (1) PL1662010T3 (de)
PT (1) PT1662010E (de)
RS (1) RS51272B (de)
SI (1) SI1662010T1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007086087A1 (en) * 2006-01-26 2007-08-02 Giovanni Arvedi Hot steel strip particularly suited for the production of electromagnetic lamination packs
WO2007086088A1 (en) * 2006-01-26 2007-08-02 Giovanni Arvedi Hot rolled dual phase steel strip having features of a cold rolled strip
WO2009012963A1 (de) * 2007-07-21 2009-01-29 Sms Siemag Ag Verfahren ukd vorrichtung zum warmwalzen von bändern aus silizium-stahl oder mehrphasenstahl
CN103028599A (zh) * 2012-05-25 2013-04-10 宝钢集团新疆八一钢铁有限公司 一种用于热轧带肋钢筋钢盘条的生产方法
WO2013051042A1 (en) 2011-10-05 2013-04-11 Centro Sviluppo Materiali S.Pa. Process for the production of grain-oriented magnetic sheet with a high level of cold reduction
JP2016047943A (ja) * 2014-08-27 2016-04-07 Ｊｆｅスチール株式会社 無方向性電磁鋼板およびその製造方法
CN107962075A (zh) * 2017-11-27 2018-04-27 武汉钢铁有限公司 高牌号无取向硅钢热轧酸洗不剪边的冷轧方法
CN109097535A (zh) * 2018-09-27 2018-12-28 长春工业大学 一种基于累积叠轧焊制备高强度无取向硅钢的方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1192864A (ja) * 1997-09-19 1999-04-06 Kawasaki Steel Corp 超微細粒を有する加工用熱延鋼板及びその製造方法
JP2000273577A (ja) * 1999-03-19 2000-10-03 Nkk Corp 伸びフランジ加工性と材質安定性に優れた高張力熱延鋼板およびその製造方法
JP2001073096A (ja) * 1999-09-01 2001-03-21 Sumitomo Metal Ind Ltd パワーステアリングモータ用無方向性電磁鋼板およびその製造法
JP2001192788A (ja) * 2000-01-12 2001-07-17 Sumitomo Metal Ind Ltd 加工性の優れた無方向性電磁鋼板とその製造方法
EP1170390A1 (de) * 1999-09-28 2002-01-09 Nkk Corporation Heissgewalztes stahlblech mit hoher zugfestigkeit und verfahren zu dessen herstellung
WO2004013365A1 (ja) 2002-08-06 2004-02-12 Jfe Steel Corporation 無方向性電磁鋼板、回転機用部材および回転機
WO2004026497A1 (en) 2002-09-19 2004-04-01 Giovanni Arvedi Process and production line for manufacturing ultrathin hot rolled strips based n the thin slab technique
EP1411138A1 (de) 2001-06-28 2004-04-21 JFE Steel Corporation Nicht orientiertes elektromagnetisches stahlblech

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1192864A (ja) * 1997-09-19 1999-04-06 Kawasaki Steel Corp 超微細粒を有する加工用熱延鋼板及びその製造方法
JP2000273577A (ja) * 1999-03-19 2000-10-03 Nkk Corp 伸びフランジ加工性と材質安定性に優れた高張力熱延鋼板およびその製造方法
JP2001073096A (ja) * 1999-09-01 2001-03-21 Sumitomo Metal Ind Ltd パワーステアリングモータ用無方向性電磁鋼板およびその製造法
EP1170390A1 (de) * 1999-09-28 2002-01-09 Nkk Corporation Heissgewalztes stahlblech mit hoher zugfestigkeit und verfahren zu dessen herstellung
JP2001192788A (ja) * 2000-01-12 2001-07-17 Sumitomo Metal Ind Ltd 加工性の優れた無方向性電磁鋼板とその製造方法
EP1411138A1 (de) 2001-06-28 2004-04-21 JFE Steel Corporation Nicht orientiertes elektromagnetisches stahlblech
WO2004013365A1 (ja) 2002-08-06 2004-02-12 Jfe Steel Corporation 無方向性電磁鋼板、回転機用部材および回転機
WO2004026497A1 (en) 2002-09-19 2004-04-01 Giovanni Arvedi Process and production line for manufacturing ultrathin hot rolled strips based n the thin slab technique

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 09 30 July 1999 (1999-07-30) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 13 5 February 2001 (2001-02-05) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 20 10 July 2001 (2001-07-10) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 24 11 May 2001 (2001-05-11) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007086087A1 (en) * 2006-01-26 2007-08-02 Giovanni Arvedi Hot steel strip particularly suited for the production of electromagnetic lamination packs
WO2007086088A1 (en) * 2006-01-26 2007-08-02 Giovanni Arvedi Hot rolled dual phase steel strip having features of a cold rolled strip
WO2009012963A1 (de) * 2007-07-21 2009-01-29 Sms Siemag Ag Verfahren ukd vorrichtung zum warmwalzen von bändern aus silizium-stahl oder mehrphasenstahl
US8137485B2 (en) 2007-07-21 2012-03-20 Sms Siemag Aktiengesellschaft Process and device for producing strips of silicon steel or multiphase steel
WO2013051042A1 (en) 2011-10-05 2013-04-11 Centro Sviluppo Materiali S.Pa. Process for the production of grain-oriented magnetic sheet with a high level of cold reduction
CN103028599A (zh) * 2012-05-25 2013-04-10 宝钢集团新疆八一钢铁有限公司 一种用于热轧带肋钢筋钢盘条的生产方法
CN103028599B (zh) * 2012-05-25 2014-11-05 宝钢集团新疆八一钢铁有限公司 一种用于热轧带肋钢筋钢盘条的生产方法
JP2016047943A (ja) * 2014-08-27 2016-04-07 Ｊｆｅスチール株式会社 無方向性電磁鋼板およびその製造方法
CN107962075A (zh) * 2017-11-27 2018-04-27 武汉钢铁有限公司 高牌号无取向硅钢热轧酸洗不剪边的冷轧方法
CN107962075B (zh) * 2017-11-27 2019-07-09 武汉钢铁有限公司 高牌号无取向硅钢热轧酸洗不剪边的冷轧方法
CN109097535A (zh) * 2018-09-27 2018-12-28 长春工业大学 一种基于累积叠轧焊制备高强度无取向硅钢的方法

Also Published As

Publication number Publication date
PT1662010E (pt) 2009-03-03
DE602004018942D1 (de) 2009-02-26
DK1662010T3 (da) 2009-04-27
ES2316949T3 (es) 2009-04-16
HRP20090096T3 (en) 2009-05-31
RS51272B (sr) 2010-12-31
EP1662010B1 (de) 2009-01-07
SI1662010T1 (sl) 2009-04-30
ATE420214T1 (de) 2009-01-15
PL1662010T3 (pl) 2009-06-30

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