EP4208577A1 - Produit métallique plat à grains non orientés, son procédé de production et son utilisation - Google Patents

Produit métallique plat à grains non orientés, son procédé de production et son utilisation

Info

Publication number
EP4208577A1
EP4208577A1 EP21730216.5A EP21730216A EP4208577A1 EP 4208577 A1 EP4208577 A1 EP 4208577A1 EP 21730216 A EP21730216 A EP 21730216A EP 4208577 A1 EP4208577 A1 EP 4208577A1
Authority
EP
European Patent Office
Prior art keywords
flat product
content
temperature
weight
flat
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.)
Pending
Application number
EP21730216.5A
Other languages
German (de)
English (en)
Inventor
Olaf Fischer
Karl Telger
Anton Vidovic
Nina Maria WINKLER
Julia DAAMEN
Aleksander Matos COSTA
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.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Steel Europe AG
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 Steel Europe AG filed Critical ThyssenKrupp Steel Europe AG
Publication of EP4208577A1 publication Critical patent/EP4208577A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01F1/16—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 in the form of sheets
    • 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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—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
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following 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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273—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
    • 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
    • C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
    • 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
    • C21D8/1233—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
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties

Definitions

  • Non-oriented metallic flat product process for its manufacture and use
  • the invention relates to a non-grain-oriented metallic flat product, a method for producing a flat product and also a use.
  • the term “metallic flat product” includes in particular rolled products, such as steel strips or steel sheets, blanks or blanks produced by casting.
  • the invention relates to flat products which are in the form of electrical steel and flat products which are in the form of electrical steel.
  • Non-grain-oriented flat products in particular non-grain-oriented electrical strip or sheet, are required in many electrotechnical applications.
  • NGO Non Grain Oriented
  • the non-grain oriented metallic flat product is used to control and amplify the course of electromagnetic fields.
  • Typical fields of application for such strips and sheets are rotors and stators in electric motors and electric generators.
  • non-grain-oriented metallic flat products in particular non-grain-oriented electrical strip and non-grain-oriented electrical steel sheet, are required which combine comparatively low core losses at comparatively high frequencies with comparatively high magnetic polarization and induction and comparatively high permeability.
  • the invention is based on the object of providing alternatives to known flat steel products which, with regard to their magnetic properties, remain the same or have better properties meet the requirements.
  • the flat products to be provided should also be usable with very low final thicknesses of, for example, less than 0.35 mm.
  • the invention is solved with a flat product with the features of claim 1.
  • the invention is also solved with a method with the features of claim 7.
  • the invention also includes a flat product with the features of claim 13 and a use with the features of claim 15 .
  • a non-grain-oriented metallic flat product which consists of a steel with the following alloy components, the elements given in weight percent, in short: weight %:
  • Ni, Cu, Sn, Co, Zr, Nb, V and Mo can be present as optional components, as long as the sum of the parts by weight of these elements does not exceed the limit specified above.
  • Mg and Ca can have a proportion between
  • a decisive measure for providing a flat product with a property combination of advantageous magnetic properties and advantageous mechanical properties could be achieved by significantly reducing the Mn content and the Cr content of the flat product with the alloy specification according to the invention compared to known compositions of electrical strips or sheets is increased .
  • the materials according to the invention combine a comparatively high magnetic polarization with comparatively low core losses.
  • the non-grain-oriented flat product is preferably non-grain-oriented electrical strip or non-grain-oriented electrical steel sheet, each made of a steel with an alloy composition according to the invention.
  • Preferred flat products according to the invention have polarization and core losses, for which the following relationships apply alternatively or cumulatively:
  • the relation P 1(O; 4oo ⁇ 16 W/kg indicates that core losses in W/kg in an alternating electromagnetic field with a core frequency of 400 Hz and a magnetic flux density of 1.0 T in the material are less than 16 W/kg.
  • the relation P 1(O; iooo ⁇ 16 W/kg indicates that core losses in W/kg in an alternating electromagnetic field with a core core frequency of 1000 Hz and a magnetic flux density of 1.0 T in the material are less than 70 W/kg.
  • the following preferably applies:
  • J2oo;iooo > 1.0, i.e. the magnetic polarization at a magnetic field strength of 200 A/m in an alternating electromagnetic field with 1000 Hz is greater than 1.0 T.
  • Preferred flat products can alternatively or additionally be characterized in that at a temperature between 18 °C and 28 °C inclusive, which also includes 18 and 28 °C, preferably at any temperature between 20 °C and 24 °C inclusive , the following relation is maintained:
  • [Mn] dimensionless value of the Mn content in % by weight
  • a particularly preferred flat product can alternatively or additionally be characterized by the surprisingly found property of the flat product that an increased content of Mn and Cr in the surface layers is set by annealing the production process.
  • Mn and Cr are enriched compared to the inside of the flat product.
  • the flat product preferably has a surface layer, ie a border area to the surface, with an Mn and Cr content which, integrated over the volume of this border area, has a value of 0.2 or higher in relation to the Al and Si content.
  • the flat product has a content of Mn and Cr in the top 0.95 micrometers below its surface, integrated over the volume of this boundary region, which has a value of 0. 2 or higher.
  • the surface layer from 0 to 0.95 ⁇ m, i.e. to a depth of 0.95 micrometers below the surface, after the final annealing, that the ratio of the sum of the mass occupancy of the volume integral of Mn and Cr to the sum of the mass occupancy of the volume integral of Si and Al is greater than or equal to 0.2.
  • [Mn] dimensionless value of the Mn content in % by weight
  • Al dimensionless value of the Al content in % by weight
  • Si dimensionless value of the Si content in % by weight, the limits of the integral indicate the depth in micrometers below the surface and the integral symbol symbolizes that up to a depth of 0.95 ⁇ m and over the entire surface of the flat product preferred according to the invention, the ratio of the sum of the Mn content and Cr content to the sum of the Al content and Si content is greater than 0.2.
  • a flat product according to the invention can alternatively or additionally be characterized in that the specific electrical resistance at a temperature of 28° C. has a value between 0.60 mm 2 /m and 0.70 mm 2 /m, more preferably between 0. 60 square mm 2 /m and 0.65 square mm 2 /m.
  • a specific electrical resistance with this proviso correlates with the good magnetic properties obtained.
  • the flat product is particularly preferably present with a maximum thickness of less than 0.35 mm, with a thickness between 0.19 mm and 0.31 mm being particularly preferred.
  • the flat product is sheet metal or strip, the thickness of which satisfies the specified criterion at every point.
  • the flat product is preferably present in the low thicknesses mentioned, since the core losses are lower with these low thicknesses than with greater thicknesses.
  • the improved processability of the flat product according to the invention unfolds its particular advantages as a result of the expected excellent cold-rollability.
  • final annealing is understood as meaning the annealing of the flat product according to the invention at the end of the production process, ie as the last process step before the insulating varnish coating.
  • Step D) takes place after Step C)
  • the hot strip is coiled after step C) or, if carried out, after step D) before, if carried out, step E) and/or before step F) with a coiling temperature between 500° C. and 750 °C
  • the hot strip annealing of step E) is carried out at a temperature between 700°C and 790°C. It is preferable that the hot strip annealing is carried out for not less than 12 hours and not more than 36 hours.
  • step F leads to particularly advantageous properties of the flat product obtained at a total degree of cold rolling of between 75% and 90%. It is particularly preferred if the flat product is rolled to a thickness of between 0.19 mm and 0.31 mm. Particularly preferably, no more than four stitches are carried out.
  • Properties have proven to be advantageous for the final annealing when it is carried out at a preferred temperature between 930° C. and 1070° C., with the duration of the final annealing particularly preferably not exceeding 300 seconds amounts to .
  • the minimum duration of the final anneal is preferably 50 seconds.
  • the final annealing preferably takes place in a continuously operated furnace through which the flat product has to pass, for example in a horizontal continuous furnace.
  • Steps A) to G) are particularly preferably carried out in their alphabetically specified order.
  • a further aspect of the present application is a flat product which can be obtained using one of the aforementioned methods or its developments.
  • a further aspect of the present application is the use of a section punched out of one of the aforementioned flat products as a lamella of a rotating electrical machine.
  • variant 1, variant 2 and variant 3 electrical strips according to the invention were produced, referred to below as variant 1, variant 2 and variant 3.
  • the compositions of variants 1, 2 and 3 are listed in Table 1. More variants, denoted as Variant Ref . 1 , variant ref . 2 and variant Ref. 3 serve as comparison samples not according to the invention, the alloy compositions of which are also listed in Table 1.
  • Low sulfur and nitrogen contents were adjusted from the specified alloys using a ladle furnace and slabs were produced using continuous casting or thin slab casting. A strip was then produced from each of these by means of hot rolling, pickling, hot strip annealing, cold rolling and final annealing. In the examples, the material was heated to a maximum of 1200° C. before hot rolling, rolled to a hot strip thickness of 1.3-1.9 mm up to a final rolling temperature of 820 °C-890 °C and a coiling temperature of 500 °C-750 °C.
  • the hot strips produced are pickled and then annealed at 700-790° C. for 24 hours, with this step not necessarily being part of the invention, it is therefore optional.
  • the annealed hot strip was formed with a total degree of cold rolling of 75-90% to a final thickness of 0.19-0.31 mm (+/- 8%) with a maximum of 4 passes.
  • the final annealing takes place at a maximum temperature between 930-1070°C.
  • the electrical resistivity of the samples was measured after the final anneal.
  • a Wheatstone measuring bridge according to DIN EN 60404-13:2015-01 was used for this.
  • the magnetic values P at 1.0 T and 1000 Hz and J at 200 A/m and 1000 Hz were determined using a 60 ⁇ 60 mm 2 table in accordance with IEC404-3, with a mean value being formed from a longitudinal and a transverse value.
  • Table 4 shows the following properties of the prepared samples 1.1, 2.1, 2.2, 2.3, 3.1 from analyzes 1-3 and samples ref. 1.1, 1.2, 2.1, 3.1 to 3.5 from analyzes ref. 1-3, where the digits after the point refer to the fact that several samples were randomly produced from one sample for the optical analysis in order to underpin the reliability of the tests carried out. For example, five samples were produced from the reference materials 3, which were numbered 3.1 to 3.5. The peculiarity of the element enrichment of Mn and Cr in the surface layers of the flat product was determined by means of glow discharge spectroscopy according to test specification ISO 11505:2012-12. The measurement is made on the top (US) and bottom (US) of the samples.

Landscapes

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

Abstract

L'invention concerne un produit métallique plat à grains non orientés, qui présente entre autres des proportions en poids comparativement élevées de Mn et de Cr. L'invention concerne également un procédé de production et une utilisation associée.
EP21730216.5A 2020-09-01 2021-06-04 Produit métallique plat à grains non orientés, son procédé de production et son utilisation Pending EP4208577A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20193920.4A EP3960886B1 (fr) 2020-09-01 2020-09-01 Produit plat métallique à grains non orientés, son procédé de fabrication ainsi que son utilisation
PCT/EP2021/064998 WO2022048803A1 (fr) 2020-09-01 2021-06-04 Produit métallique plat à grains non orientés, son procédé de production et son utilisation

Publications (1)

Publication Number Publication Date
EP4208577A1 true EP4208577A1 (fr) 2023-07-12

Family

ID=72322399

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20193920.4A Active EP3960886B1 (fr) 2020-09-01 2020-09-01 Produit plat métallique à grains non orientés, son procédé de fabrication ainsi que son utilisation
EP21730216.5A Pending EP4208577A1 (fr) 2020-09-01 2021-06-04 Produit métallique plat à grains non orientés, son procédé de production et son utilisation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20193920.4A Active EP3960886B1 (fr) 2020-09-01 2020-09-01 Produit plat métallique à grains non orientés, son procédé de fabrication ainsi que son utilisation

Country Status (5)

Country Link
US (1) US20230287544A1 (fr)
EP (2) EP3960886B1 (fr)
JP (1) JP2023538317A (fr)
CN (1) CN116057196A (fr)
WO (1) WO2022048803A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3399726B2 (ja) * 1995-11-07 2003-04-21 新日本製鐵株式会社 高磁束密度低鉄損無方向性電磁鋼板の製造方法
JP4622162B2 (ja) * 2000-06-19 2011-02-02 Ｊｆｅスチール株式会社 無方向性電磁鋼板
US7011139B2 (en) * 2002-05-08 2006-03-14 Schoen Jerry W Method of continuous casting non-oriented electrical steel strip
JP5839778B2 (ja) * 2010-04-06 2016-01-06 新日鐵住金株式会社 高周波鉄損の優れた無方向性電磁鋼板、及びその製造方法
KR20150073800A (ko) * 2013-12-23 2015-07-01 주식회사 포스코 무방향성 전기강판 및 그 제조방법
JP6651759B2 (ja) * 2015-09-16 2020-02-19 日本製鉄株式会社 無方向性電磁鋼板およびその製造方法
KR102227328B1 (ko) * 2016-08-05 2021-03-12 닛폰세이테츠 가부시키가이샤 무방향성 전자 강판, 무방향성 전자 강판의 제조 방법 및 모터 코어의 제조 방법
DE102017208146B4 (de) * 2017-05-15 2019-06-19 Thyssenkrupp Ag NO-Elektroband für E-Motoren
KR102120276B1 (ko) * 2018-09-27 2020-06-08 주식회사 포스코 무방향성 전기강판 및 그 제조방법

Also Published As

Publication number Publication date
US20230287544A1 (en) 2023-09-14
EP3960886A1 (fr) 2022-03-02
EP3960886B1 (fr) 2024-07-03
JP2023538317A (ja) 2023-09-07
CN116057196A (zh) 2023-05-02
WO2022048803A1 (fr) 2022-03-10

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