WO2024056591A1 - Tôle d'acier ayant un revêtement aluminisé par immersion à chaud pour formage à chaud - Google Patents

Tôle d'acier ayant un revêtement aluminisé par immersion à chaud pour formage à chaud Download PDF

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Publication number
WO2024056591A1
WO2024056591A1 PCT/EP2023/074871 EP2023074871W WO2024056591A1 WO 2024056591 A1 WO2024056591 A1 WO 2024056591A1 EP 2023074871 W EP2023074871 W EP 2023074871W WO 2024056591 A1 WO2024056591 A1 WO 2024056591A1
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WO
WIPO (PCT)
Prior art keywords
coating
fal
weight
steel sheet
hot
Prior art date
Application number
PCT/EP2023/074871
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German (de)
English (en)
Inventor
Hendrik Henke
Sebastian STILLE
Dirk Rosenstock
Original Assignee
Thyssenkrupp Steel Europe Ag
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Filing date
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Application filed by Thyssenkrupp Steel Europe Ag filed Critical Thyssenkrupp Steel Europe Ag
Publication of WO2024056591A1 publication Critical patent/WO2024056591A1/fr

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/012—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/12—Aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips

Definitions

  • the invention relates to a steel sheet coated with a FAL coating made of a hardenable steel material for hot forming, the surface of the FAL coating having an Sdr value of at least 3.0%.
  • FAL manganese-boron steels
  • FAL manganese-boron steels
  • These offer effective scale protection during the annealing process before hot forming and thus ensure that the press-hardened component can be processed further without the need for a further process step to remove scale deposits.
  • metallurgical transformations of the FAL layer occur as the annealing time increases. Since the typical process temperatures during hot forming are around 900 °C, well above the melting temperature of the FAL layer, the coating melts. However, this effect is mitigated by the fact that iron diffusing from the substrate significantly increases the melting point of the coating. If the annealing process is completed successfully, a multi-layer structure is usually formed, which has a good range of properties during subsequent pressing and subsequent further processing.
  • This annealing period is made up of two temporal phases: First, some time passes in the oven until the previously cold sheet material has reached the desired target temperature. The second phase then consists of keeping the blank at the target temperature - until the layer has undergone the transformations described above.
  • the first phase (heating up) is particularly important because as long as the material is not yet at the target temperature, the diffusion processes involved in the conversion are also significantly slower.
  • Steels or steel sheets with FAL coatings for hot forming are disclosed, for example, in EP 1 013 785 Al.
  • a stochastic tempering process for FAL-coated steel sheets for hot forming is described in EP 3 239 337 Bl.
  • WO 2020/130401 A1 discloses a deterministically textured temper roll for FAL-coated steel sheets in order to obtain an optically good surface with an excellent paint appearance.
  • the teaching of the invention relates to a steel sheet coated with a FAL coating made of a hardenable steel material for hot forming, the surface of the FAL coating having an Sdr value of at least 3.0%, the FAL coating having a deterministic surface structure.
  • the Sdr value refers to a developed limit ratio or is also a measure of surface enlargement, which indicates the percentage of the additional area of a definition area that is attributable to a structure compared to the absolutely flat definition area.
  • Methods for determining or determining the Sdr value are familiar to those skilled in the art, in particular based on DIN EN ISO 25178.
  • the Sdr value can be determined by or using atomic force microscopy (AFM).
  • AFM atomic force microscopy
  • psurf An available technology for determining/capturing surface parameters is called known as “psurf”. Details are available at the link: www.nanofocus.de/technologie/messnicien/usurf-technoloqie/.
  • the deterministic surface structure of the FAL coating in particular has an Sdr value of at least 3.5%, 4.0%, 4.3%, 4.6%, 5.0%, preferably at least 5.5%, 6.0 %, 6.5%, 7.0%, 7.5%, 8.0%, preferably at least 9.0%, 10.0%, 11.0%, 12.0%, 13.0% especially preferably at least 14.0%, 15.0%.
  • the Sdr value can be limited to a maximum of 35.0%, in particular a maximum of 32.0%.
  • a flat surface has or would have an Sdr value of 0%.
  • Sheet steel is, among other things, to understand a flat steel product as a strip or sheet or blank.
  • the steel sheet has a longitudinal extent (length), a transverse extent (width) and a height extent (thickness).
  • the steel sheet may be hot rolled or preferably cold rolled. Hot and optionally preferred cold rolling are known to those skilled in the art.
  • the thickness of the coated steel sheet can be, for example, 0.50 to 6.0 mm, in particular 0.60 to 4.0 mm, preferably 0.70 to 3.50 mm.
  • Deterministic surface structure means recurring structures, for example embossings, which have a defined shape and/or design, cf. EP 2 892 663 Bl. In particular, this also includes surfaces with a (quasi-) stochastic appearance, which are, however, applied using a deterministic texturing process and are therefore composed of deterministic form elements.
  • FAL coating means an aluminum-based coating.
  • the FAL coating is conventionally applied to the steel sheet in known devices or by known methods.
  • a deterministic surface structure is introduced after the FAL coating has been applied and solidified using deterministically textured temper rollers.
  • the surface enlargement does not take place in the cold rolling process on an uncoated steel sheet, but according to the invention only after the FAL coating has been applied in order to ensure reproducibility and thereby specifically a deterministic surface structure introduced into the FAL coating.
  • the deterministic surface structure has an average roughness Ra between 1.0 and 6.0 pm.
  • the average roughness Ra can be at least 1.30 pm, preferably at least 1.50 pm, preferably at least 1.70 pm.
  • the roughness Ra can be a maximum of 5.0 pm, preferably a maximum of 4.0 pm, preferably a maximum of 3.0 pm.
  • the deterministic surface structure has a peak number RPc between 100 and 250 1/cm.
  • the peak number RPc can be at least 110 1/cm, preferably at least 130 1/cm.
  • the peak number RPc can be a maximum of 220 1/cm, preferably a maximum of 200 1/cm, preferably a maximum of 180 1/cm.
  • the average roughness Ra in pm and the peak number RPc in 1/cm can be determined along a defined measuring section, see DIN EN ISO 4287.
  • the deterministic surface structure has a structure depth Rz between 4.0 and 25.0 pm, in particular between 5.0 and 22.0 pm, preferably between 6 and 18.0 pm, preferably a maximum of 15 pm.
  • the structure depth Rz in pm is the maximum distance between the highest peak and the lowest point of the deterministic surface structure along a defined measuring section, cf. DIN EN ISO 4287.
  • the setting of the roughness Ra and/or the number of peaks RPc on the surface of the steel sheet depends, on the one hand, on the roughness Ra and the number of peaks RPc of the surface of the roll and, on the other hand, on the transmission rate, which is dependent on the degree of rolling and/or on the rolling force , and can therefore be controlled specifically.
  • the deterministic surface structure has a skewness Rsk between + 1.0 and - 2.0.
  • the skewness can be between + 1.0 and > 0.
  • Rsk is used to evaluate the asymmetry of the amplitude density, with positive values identifying profiles with a high proportion of peaks, cf. DIN EN ISO 4287.
  • deterministic Surface structure has a positive skew Rsk in the undirected state.
  • the skewness Rsk can alternatively be between -0.8 and -2.0, with the deterministic surface structure having a negative skewness Rsk, for example in the directed state.
  • straightened means the use of a straightening machine, which is known to those skilled in the art, and this effect on the surface of the FAL coating in particular due to contact between the sheet/strip and bending rollers and thus leads to a change in the parameters compared to “non-aligned”.
  • Hardenable steel materials are state of the art. Examples to be mentioned are preferably manganese-boron steels or in particular other steels for hot forming, such as microalloyed concepts, with tensile strengths in the hardened state of at least 500 MPa, in particular at least 600 MPa, preferably at least 1200 MPa, preferably at least 1500 MPa and higher. Depending on the alloy or the carbon content of the hardenable steel, a maximum tensile strength of up to 2500 MPa or higher can be achieved, in particular a maximum of 2300 MPa, preferably a maximum of 2200 MPa.
  • the hardenable steel material can have the following chemical composition in% by weight:
  • N to 0.1, and optionally one or more alloying elements from the group (Al, Ti, V, Nb, B, Cr, Mo, Cu, Ni, Ca):
  • V to 0.5
  • Nb to 0.5
  • the FAL coating has the following chemical composition in% by weight: optionally one or more alloying elements from the group (Si, Fe, Mg, Zn):
  • the FAL coating can contain additional elements such as silicon with a content of up to 15.0% by weight and/or iron with a content of up to 5.0% by weight and/or magnesium with a content up to 5.0% by weight and/or zinc with a content of up to 30.0% by weight.
  • Si can in particular be present at at least 0.1% by weight, preferably at least 2.0% by weight, preferably at least 4.0% by weight, the content being in particular at a maximum of 12.0% by weight. , preferably can be limited to a maximum of 11.0% by weight.
  • Si in the coating can contribute to improved processability during hot-dip coating.
  • Fe can be present in particular at least 0.1% by weight, preferably at least 0.5% by weight, preferably at least 1.0% by weight, the content being in particular at a maximum of 4.0% by weight .-%, preferably limited to a maximum of 3.5% by weight.
  • Fe in the coating can increase the melting temperature of the coating, which can be an advantage when austenitizing.
  • Mg can be present in particular at least 0.1% by weight, preferably at least 0.2% by weight, the content being in particular at a maximum of 3.0% by weight, preferably at a maximum of 1.5% by weight .-%, preferably can be limited to a maximum of 0.8% by weight.
  • Mg can lead to a reduction in the uptake of diffusible hydrogen in the coating contribute the substrate.
  • Zn can be present in particular at least 0.1% by weight, preferably at least 0.2% by weight, the content being in particular at a maximum of 20.0% by weight, preferably at a maximum of 10.0% by weight .-%, preferably can be limited to a maximum of 5.0% by weight.
  • Zn in the coating can help improve corrosion resistance.
  • the Si content in the FAL coating is either 0.2 to 4.5% by weight or 7 to 13% by weight, in particular 8 to 11% by weight.
  • the optional Fe content in the FAL coating can comprise 0.2 to 4.5% by weight, in particular 1 to 4% by weight, preferably 1.5 to 3.5% by weight.
  • the optional content of Mg in the FAL coating comprises 0.01 to 1.0% by weight of Mg, in particular 0.1 to 0.7% by weight of Mg, preferably 0.1 to 0.5% by weight .-% Mg.
  • the FAL coating may contain 2.0 to 24.0 wt.% Zn, 1.0 to 7.0 wt.% Si, optionally 1.0 to 8.0 wt.% Mg, if the content of Si should be between 1.0 and 4.0% by weight, optionally up to 0.3% by weight in total of Pb, Ni, Zr or Hf and in particular impurities whose total content is at most 2, 0% by weight are limited, and the remainder is aluminum.
  • the thickness of the FAL coating is 3.0 to 40.0 pm (before hot forming), in particular 10.0 to 40.0 pm, preferably 11.0 to 35.0 pm, preferably 12.0 to 30.0 pm , more preferably 13.0 to 27.0 pm.
  • a cold-rolled steel sheet of grade 22MnB5 with a thickness of 1.50 mm coated with a FAL coating (Si: 7%, Fe: 2%, balance Al and unavoidable impurities, thickness 25 pm) was tempered on both sides with different textured temper rolls, whereby a stochastic surface structure has been embossed into the surface of the FAL coating in a first coated steel sheet (VI).
  • the temper rolls were textured in a known manner using the EDT process, see EP 2 006 037 B1.
  • Another coated steel sheet (2) was tempered with a deterministic surface structure with a double I structure, see EP 2 892 663 Bl.
  • Another cold-rolled steel sheet of grade 22MnB5 with a thickness of 1.40 mm coated with a FAL coating (Si: 7%, Fe: 2%, balance Al and unavoidable impurities, thickness 25 pm) was skin-passed on both sides with different textured temper rolls, wherein a stochastic surface structure has been embossed into the surface of the FAL coating in a second to fourth coated steel sheet (V2) to (V4).
  • Further coated steel sheets (4) to (10) and (13) were each treated with a deterministic surface structure, with double-I structures of different sizes being chosen.
  • Samples VI to 13 were provided with a thermocouple and then heated at an oven temperature of 920 ° C. The time required to heat the FAL-coated steel sheet up to 910°C is also listed in Table 1.
  • Samples VI to V4 are reference samples and were provided with a stochastic surface structure using EDT-textured temper rolls.
  • Samples 2, 4 to 10 and 13 are samples according to the invention and were provided with a deterministic surface structure, with all samples being provided in the non-directional state.
  • both deterministic surface structures according to the invention in the FAL coating have significantly improved heating behavior compared to the stochastic reference.
  • the time saving is approx. 6 - 53 s.
  • this leads to significant savings in energy requirements as well as the option of carrying out the annealing process with reduced furnace capacities, i.e., for example, a shorter roller hearth furnace or fewer furnace chambers, etc.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne une tôle d'acier constituée d'un matériau d'acier durcissable et revêtue d'un revêtement aluminisé par immersion à chaud pour formage à chaud, la surface du revêtement aluminisé par immersion à chaud ayant une valeur SDR d'au moins 3,0 %, le revêtement aluminisé par immersion à chaud ayant une structure de surface déterministe.
PCT/EP2023/074871 2022-09-16 2023-09-11 Tôle d'acier ayant un revêtement aluminisé par immersion à chaud pour formage à chaud WO2024056591A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022123741.9A DE102022123741A1 (de) 2022-09-16 2022-09-16 FAL-beschichtetes Stahlblech für die Warmumformung
DE102022123741.9 2022-09-16

Publications (1)

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WO2024056591A1 true WO2024056591A1 (fr) 2024-03-21

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1013785A1 (fr) 1998-12-24 2000-06-28 Sollac Procédé de réalisation d'une pièce à partir d'une bande de tôle d'acier laminée et notamment laminée à chaud
EP2006037B1 (fr) 2007-06-22 2010-08-11 ThyssenKrupp Steel Europe AG Produit plat en métal, en particulier en acier, utilisation d'un tel produit plat tout comme presse et procédé de fabrication de tels produits plats
DE102012017703A1 (de) * 2012-09-07 2014-03-13 Daetwyler Graphics Ag Flachprodukt aus Metallwerkstoff, insbesondere einem Stahlwerkstoff, Verwendung eines solchen Flachprodukts sowie Walze und Verfahren zur Herstellung solcher Flachprodukte
EP3239337B1 (fr) 2014-12-24 2019-12-25 Posco Élément de moulage hpf présentant une excellente résistance au délaminage et son procédé de fabrication
WO2020130401A1 (fr) 2018-12-19 2020-06-25 주식회사 포스코 Cylindre d'écrouissage de feuille d'acier aluminiséé par immersion à chaud présentant un très bel aspect superficiel et une parfaite netteté d'image après peinture, procédé de fabrication de feuille d'acier aluminisée par immersion à chaud à l'aide d'un tel cylindre d'écrouissage, et feuille d'acier aluminisée par immersion à chaud
DE102019219651A1 (de) * 2019-12-16 2021-06-17 Thyssenkrupp Steel Europe Ag Metallblech mit einer deterministischen Oberflächenstruktur und Verfahren zur Herstellung eines umgeformten und lackierten Blechbauteils
DE102020201451A1 (de) * 2020-02-06 2021-08-12 Thyssenkrupp Steel Europe Ag Stahlblech für die Warmumformung, Verfahren zur Herstellung eines warmumgeformten Stahlblechbauteils und warmumgeformtes Stahlblechbauteil
DE102020124488A1 (de) 2020-09-21 2022-03-24 Thyssenkrupp Steel Europe Ag Blechbauteil und Verfahren zu seiner Herstellung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1013785A1 (fr) 1998-12-24 2000-06-28 Sollac Procédé de réalisation d'une pièce à partir d'une bande de tôle d'acier laminée et notamment laminée à chaud
EP2006037B1 (fr) 2007-06-22 2010-08-11 ThyssenKrupp Steel Europe AG Produit plat en métal, en particulier en acier, utilisation d'un tel produit plat tout comme presse et procédé de fabrication de tels produits plats
DE102012017703A1 (de) * 2012-09-07 2014-03-13 Daetwyler Graphics Ag Flachprodukt aus Metallwerkstoff, insbesondere einem Stahlwerkstoff, Verwendung eines solchen Flachprodukts sowie Walze und Verfahren zur Herstellung solcher Flachprodukte
EP2892663B1 (fr) 2012-09-07 2016-11-09 Daetwyler Graphics AG Produit plat constitué d'un matériau métallique, en particulier d'un matériau acier, utilisation dudit produit plat, ainsi que cylindre et procédé de fabrication dudit produit plat
EP3239337B1 (fr) 2014-12-24 2019-12-25 Posco Élément de moulage hpf présentant une excellente résistance au délaminage et son procédé de fabrication
WO2020130401A1 (fr) 2018-12-19 2020-06-25 주식회사 포스코 Cylindre d'écrouissage de feuille d'acier aluminiséé par immersion à chaud présentant un très bel aspect superficiel et une parfaite netteté d'image après peinture, procédé de fabrication de feuille d'acier aluminisée par immersion à chaud à l'aide d'un tel cylindre d'écrouissage, et feuille d'acier aluminisée par immersion à chaud
DE102019219651A1 (de) * 2019-12-16 2021-06-17 Thyssenkrupp Steel Europe Ag Metallblech mit einer deterministischen Oberflächenstruktur und Verfahren zur Herstellung eines umgeformten und lackierten Blechbauteils
DE102020201451A1 (de) * 2020-02-06 2021-08-12 Thyssenkrupp Steel Europe Ag Stahlblech für die Warmumformung, Verfahren zur Herstellung eines warmumgeformten Stahlblechbauteils und warmumgeformtes Stahlblechbauteil
DE102020124488A1 (de) 2020-09-21 2022-03-24 Thyssenkrupp Steel Europe Ag Blechbauteil und Verfahren zu seiner Herstellung

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