EP2812456B1 - Procédé pour produire une tôle magnétique utilisant un feuillard d'acier laminé à chaud - Google Patents

Procédé pour produire une tôle magnétique utilisant un feuillard d'acier laminé à chaud Download PDF

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Publication number
EP2812456B1
EP2812456B1 EP13709308.4A EP13709308A EP2812456B1 EP 2812456 B1 EP2812456 B1 EP 2812456B1 EP 13709308 A EP13709308 A EP 13709308A EP 2812456 B1 EP2812456 B1 EP 2812456B1
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Prior art keywords
strip
hot
grain
content
casting
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German (de)
English (en)
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EP2812456A1 (fr
Inventor
Zacharias Georgeou
Alexander Redenius
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Salzgitter Flachstahl GmbH
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Salzgitter Flachstahl GmbH
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt
    • 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
    • C21D8/1216—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
    • 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
    • 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
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0064—Uncoiling the rolled product
    • 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
    • C21D2201/00—Treatment for obtaining particular effects
    • C21D2201/05—Grain orientation
    • 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

Definitions

  • the invention relates to a method for producing an electrical steel sheet from a hot strip.
  • Materials for electrical sheets are also from the DE 101 53 234 A1 or DE 601 08 980 T2 known. They usually consist of an iron-silicon or iron-silicon-aluminum alloy, whereby a distinction is made between grain-oriented (KO) and non-grain-oriented (NO) electrical sheets and these are used for different applications. In particular, aluminum and silicon are added to minimize magnetization losses.
  • anisotropic materials materials whose physical properties depend on the direction of stress are referred to as anisotropic. If the properties are equivalent in all stress directions, this is called isotropic materials.
  • the anisotropy of the magnetic properties of electrical steel is based on the crystal anisotropy of the iron. Iron and its alloys crystallize in a cubic structure.
  • the cube edge direction is the most magnetizable direction [100].
  • the direction of the space diagonal [111] in the cube is the most magnetically unfavorable direction.
  • non-grain oriented electrical steel For applications in the electrical engineering, in which the magnetic flux is fixed in any particular direction and therefore equally good magnetic properties in all directions are required, one usually produces electrical steel strip with isotropic properties as possible, which is referred to as non-grain oriented (NO) electrical steel.
  • NO non-grain oriented
  • the ideal structure (microstructure) for a non-grain oriented electrical steel strip is a polycrystalline microstructure with grain sizes between 20 ⁇ m and 200 ⁇ m, whereby the crystallites are randomly aligned in the plane of the sheet with the surface (100).
  • the magnetic properties of real non-oriented electrical steel are in the Sheet metal to a small extent dependent on the magnetization direction.
  • the loss differences between the longitudinal and transverse directions are only max. 10%.
  • the expression of a sufficient isotropy of the magnetic properties in non-grain-oriented electrical steel is substantially influenced by the design of the hot forming, cold forming and final annealing.
  • the magnetic properties in the electrical steel are substantially due to a high degree of purity, the content of silicon and aluminum (up to about 4 mass%), small amounts of other alloying elements, such.
  • the common sheet thicknesses are in the range well below 1 mm, z. B. at 0.18 or 0.35 mm.
  • non-grain-oriented material has as much isotropic magnetic properties in the sheet plane and consequently is preferably used for rotating machines
  • a grain orientation is produced in the grain-oriented material by several successive rolling and annealing treatments.
  • anisotropy in the material, the magnetization losses decrease and the relative permeability number increases with the corresponding direction of magnetization.
  • this textured material can therefore be compared with non-grain oriented Materials Transformers that have a smaller size at higher efficiency.
  • the from the DE 101 53 234 A1 known material for a non-grain oriented electrical steel sheet has an alloy composition with C ⁇ 0.02%, Mn ⁇ 1.2%, Si 0.1-4.4% and Al 0.1-4.4%.
  • a disadvantage of the known material are each with max. 4.4% relatively low Si and Al contents, with which in many applications, the magnetic permeability is not sufficiently high and the magnetization loss is sufficiently low, which adversely affects the efficiency of electric machines and thus their efficiency.
  • Si and Al content With increasing Si and Al content, the electrical resistance of the steel increases, thereby reducing the induced eddy currents and thus also the core losses.
  • the precursor has a very coarse grain and the casting of casting powder is problematic due to the high Al content of the ferritic steel.
  • Casting powder can be from an Al content of Do not use melt of more than approx. 2% since aluminum interacts with the oxygen bound in the casting powder to form aluminum oxides (see above).
  • the object of the invention is to provide a method for producing an electric sheet, with which, compared to known electric sheets, markedly improved magnetic properties, in particular a higher magnetic permeability, can be achieved.
  • Another object is to provide an improved and less expensive manufacturing process for this hot strip.
  • B and / or Zr up to the specified limit can advantageously contribute to the improvement of the hot rolling properties, since the nitrides (BN, ZrN) or carbides (ZrC) which form are attached to the grain boundaries and improve the sliding at high temperatures (hot rolling temperatures).
  • the minimum content for B should be 0.001% and for Zr should be 0.05%. It is also advantageous that the hot crack susceptibility is significantly reduced by these additions.
  • the ductility at room temperature can advantageously be improved without significantly affecting the magnetic properties.
  • the hot strip produced by the method with the alloy composition according to the invention is characterized by significantly improved magnetic properties, in particular by a significantly higher magnetic permeability, through which the field of application of this material under energetic and economic aspects can be significantly increased.
  • significantly improved magnetic properties in particular by a significantly higher magnetic permeability, through which the field of application of this material under energetic and economic aspects can be significantly increased.
  • increased Al content causes a significant increase in the electrical resistance and thus a corresponding reduction in the re-magnetization losses.
  • this scale layer should not exceed a thickness of 100 .mu.m, better 50 .mu.m, so that the layer does not adversely affect the rollability due to chipping scale due to the increasing brittleness with increasing thickness.
  • a further increase in magnetic permeability is achieved by a higher addition of Si ⁇ 0.05%.
  • the addition of Si takes place as a function of the Al contents.
  • Al contents of 4.8 to 8% the Si content must be between 2 and 5%, for Al contents of more than 8 to 15% between 0.05 and 4% and above 15% Al up to 2 %, so that the material remains hot-rollable.
  • a method for quality-assured and economical production of such a hot strip, a method is used according to the invention, in which the melt flow-smoothed and bend-free cast in a horizontal Bandg discernstrom to a Vorband in the range between 6 and 30 mm thickness and then hot strip with a degree of deformation of at least 50% in thicknesses rolled from 0.9 to 6.0 mm. Before hot rolling, an annealing process at 800 to 1200 ° C may be necessary.
  • the hot strip can also be used advantageously as an end product in electromagnetic fields of application.
  • an additional annealing process is necessary so that the grains can align. This process, which involves annealing between 800 and 1200 ° C, can be continuous or discontinuous, lasting up to 30 minutes.
  • the alloy composition according to the invention it is possible with the alloy composition according to the invention to produce both grain-oriented (KO) and non-grain-oriented (NO) electrical tapes, depending on the specification.
  • the hot strip after a reheating annealing process (possibly in a decarburizing atmosphere) and thus adjust final thicknesses of up to 0.1 mm.
  • the annealing after cold rolling should be done at temperatures of 700 and 900 ° C for a maximum of 10 minutes or for KO electrical tapes for several hours in a comparable temperature window.
  • a decarburizing atmosphere is advantageous because it reduces the carbon content in the belt (mainly at the periphery). This leads to an improvement of the magnetic properties, since fewer defects occur in the material, which are caused for example by the carbon atoms.
  • the advantage of the proposed method is the fact that when using a horizontal strip casting Macroseiger Heidelberg and blowholes can be largely avoided due to very homogeneous cooling conditions in the horizontal strip casting. Since no casting powder is used in these plants, eliminates the G confusepulverproblematik also.
  • the strip casting process In terms of process technology, it is proposed for the strip casting process to achieve flow calming by using a follower electromagnetic brake which generates synchronously or with an optimum relative speed to the strip, which ensures that in the ideal case Speed of Schmelzenzulaufs is equal to the speed of the circulating conveyor belt.
  • the considered disadvantageous bending during solidification is avoided in that the underside of the casting tape receiving the melt is supported on a plurality of juxtaposed rollers.
  • the support is reinforced in such a way that in the region of the casting belt, a negative pressure is generated, so that the casting belt is pressed firmly on the rollers.
  • the Al-rich or Si-rich melt solidifies in an almost oxygen-free furnace atmosphere.
  • the Si-rich scale liquefies, which is also extremely difficult to remove. This can be avoided by a corresponding temperature-time guidance in the enclosure and the following process steps.
  • the length of the conveyor belt is selected so that at the end of the conveyor belt before its deflection, the Vorband is largely solidified.
  • a homogenization zone which is used for temperature compensation and possible stress relief.
  • Rolling from pre-strip to hot strip can be done either in-line or separately off-line.
  • the pre-strip Before off-line rolling, the pre-strip may be either directly hot-rolled or sliced into sheets after manufacture prior to cooling. The strip or sheet material is then reheated after eventual cooling and unwound for off-line rolling or reheated and rolled as a sheet.
  • a horizontal strip casting plant consisting of a circulating conveyor belt 2 and two deflection rollers 3, 3 '.
  • a side seal 4 which prevents the discontinued melt 5 can flow down to the right and left of the conveyor belt 2.
  • the melt 5 is transported by means of a pan 6 to the strip casting plant 1 and flows through an opening 7 provided in the bottom into a feed vessel 8.
  • This feed vessel 8 is designed as an overflow vessel.
  • a homogenization zone 10 at. This consists of a thermally insulated housing 11 and a roller table, not shown here.
  • the then following first stand 12 is formed either only as a pure drive unit, possibly with a small puncture or as a roll unit with a predetermined puncture.
  • a pair of scissors 20 is arranged between the end of the cooling section 17 and reel 19, 19 '.
  • This scissors 20 has the task of dividing the hot strip 18 transversely as soon as one of the two reels 19, 19 'is fully wound.
  • the beginning of the subsequent hot strip 18 is then passed to the second vacant reel 19, 19 '. This ensures that the tape tension is maintained over the entire tape length. This is particularly important in the production of thin hot strips.

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

Claims (4)

  1. Procédé de fabrication d'une tôle magnétique à partir d'un feuillard laminé à chaud se composant d'une composition d'alliage suivante en % en poids :
    C : de 0,001 à 0,08
    Al : de 4,8 à 20
    Si : de 0,05 à 5
    B : jusqu'à 0,1
    Zr : jusqu'à 0,1
    Cr : de 0,1 à 4
    le reste du fer et des impuretés inhérentes à la fusion, à la condition que, pour des teneurs en Al de 4,8 à 8 % la teneur en Si est comprise entre 2 et 5 %, pour des teneurs en Al de plus de 8 à 15 % la teneur en Si est de 4 % au maximum et pour plus de 15 à 20 % d'Al la teneur en Si est de 2 % au maximum.
  2. Procédé selon la revendication 1,
    caractérisé par la composition d'alliage suivante en % en poids :
    B : de 0,001 jusqu'à 0,1 et/ou
    Zr : de 0,05 jusqu'à 0,1.
  3. Procédé selon l'une quelconque des revendications 1 à 2,
    présentant au choix une structure à grains orientés (KO) ou à grains non orientés (NO).
  4. Procédé de génération d'un feuillard laminé à chaud selon les revendications 1 à 3, pour lequel une fonte est coulée en un préfeuillard et celui-ci est ensuite laminé en un feuillard laminé à chaud,
    caractérisé en ce
    que la fonte présente un écoulement calme dans une installation de coulage de feuillard horizontale et est coulée sans flexion en un préfeuillard dans la plage entre 6 et 30 mm et est ensuite laminée en un feuillard laminé à chaud avec un degré de formation d'au moins 50 %.
EP13709308.4A 2012-02-08 2013-01-30 Procédé pour produire une tôle magnétique utilisant un feuillard d'acier laminé à chaud Active EP2812456B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012002642A DE102012002642B4 (de) 2012-02-08 2012-02-08 Warmband zur Herstellung eines Elektroblechs und Verfahren hierzu
PCT/DE2013/000084 WO2013117184A1 (fr) 2012-02-08 2013-01-30 Feuillard laminé à chaud utilisé pour produire une tôle magnétique et procédé approprié

Publications (2)

Publication Number Publication Date
EP2812456A1 EP2812456A1 (fr) 2014-12-17
EP2812456B1 true EP2812456B1 (fr) 2019-08-21

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EP13709308.4A Active EP2812456B1 (fr) 2012-02-08 2013-01-30 Procédé pour produire une tôle magnétique utilisant un feuillard d'acier laminé à chaud

Country Status (10)

Country Link
US (1) US20150013845A1 (fr)
EP (1) EP2812456B1 (fr)
JP (2) JP2015513607A (fr)
KR (1) KR102048791B1 (fr)
CN (1) CN104204237B (fr)
BR (1) BR112014019450A8 (fr)
DE (1) DE102012002642B4 (fr)
RU (1) RU2615423C2 (fr)
UA (1) UA112677C2 (fr)
WO (1) WO2013117184A1 (fr)

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DE102013004905A1 (de) * 2012-03-23 2013-09-26 Salzgitter Flachstahl Gmbh Zunderarmer Vergütungsstahl und Verfahren zur Herstellung eines zunderarmen Bauteils aus diesem Stahl
DE102013013407B4 (de) * 2013-08-07 2015-05-28 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung von Schneid- und Zerspanwerkzeugen aus Stahl mit verbesserter Standzeit
DE102013019787A1 (de) * 2013-11-27 2015-05-28 Valeo Schalter Und Sensoren Gmbh Verfahren zum Herstellen eines ferromagnetischen Bauteils für einen Drehmomentsensor einer Fahrzeuglenkwelle und Drehmomentsensor
DE102014005662A1 (de) 2014-04-17 2015-10-22 Salzgitter Flachstahl Gmbh Werkstoffkonzept für einen umformbaren Leichtbaustahl
US11047018B2 (en) 2016-07-29 2021-06-29 Salzgitter Flachstahl Gmbh Steel strip for producing a non-grain-oriented electrical steel, and method for producing such a steel strip
DE102017200731A1 (de) * 2016-11-10 2018-05-17 Sms Group Gmbh Verfahren zum Herstellen eines metallischen Bandes in einer Gießwalzanlage
DE102017123236A1 (de) * 2017-10-06 2019-04-11 Salzgitter Flachstahl Gmbh Höchstfester Mehrphasenstahl und Verfahren zur Herstellung eines Stahlbandes aus diesem Mehrphasenstahl
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RU2014136389A (ru) 2016-03-27
UA112677C2 (uk) 2016-10-10
WO2013117184A1 (fr) 2013-08-15
KR20140129059A (ko) 2014-11-06
EP2812456A1 (fr) 2014-12-17
CN104204237A (zh) 2014-12-10
DE102012002642A1 (de) 2013-08-08
KR102048791B1 (ko) 2020-01-22
RU2615423C2 (ru) 2017-04-04
JP2017197843A (ja) 2017-11-02
BR112014019450A8 (pt) 2017-07-11
CN104204237B (zh) 2017-03-01
BR112014019450A2 (fr) 2017-06-20
DE102012002642B4 (de) 2013-08-14
JP6471190B2 (ja) 2019-02-13
JP2015513607A (ja) 2015-05-14

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