EP4041467A1 - Stahlblech mit einer deterministischen oberflächenstruktur - Google Patents
Stahlblech mit einer deterministischen oberflächenstrukturInfo
- Publication number
- EP4041467A1 EP4041467A1 EP20785704.6A EP20785704A EP4041467A1 EP 4041467 A1 EP4041467 A1 EP 4041467A1 EP 20785704 A EP20785704 A EP 20785704A EP 4041467 A1 EP4041467 A1 EP 4041467A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel sheet
- depth profile
- flank
- surface structure
- subregions
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 94
- 239000010959 steel Substances 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims description 41
- 239000011248 coating agent Substances 0.000 claims description 33
- 238000000576 coating method Methods 0.000 claims description 33
- 238000003618 dip coating Methods 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 238000009713 electroplating Methods 0.000 claims 2
- 238000005496 tempering Methods 0.000 claims 1
- 238000007493 shaping process Methods 0.000 description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 238000004630 atomic force microscopy Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000000089 atomic force micrograph Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B1/227—Surface roughening or texturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/005—Rolls with a roughened or textured surface; Methods for making same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
- B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates
-
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B2001/228—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 plates, strips, bands or sheets of indefinite length skin pass rolling or temper rolling
Definitions
- the invention relates to a sheet steel dressed with a deterministic surface structure.
- the invention also relates to a method for producing a steel sheet dressed with a deterministic surface structure.
- each depression has a circumferential flank area, which based on the The surface opens into a valley area, each depression having a depth profile, viewed in a sectional view, comprising two opposing flank sub-areas and a valley sub-area running between the flank sub-areas and connecting the flank sub-areas, the depth profile being divided into a left part and a right part of the depth profile , wherein the depth profile runs asymmetrically, wherein the flank sub-areas and valley sub-areas of the left part and the right part of the depth profile differ at least in terms of fleas, width and / or slope.
- resulting fleas have accumulated and are thus available to the process-relevant area, whereby the resistance can be reduced so that the unfavorable ratio of the deformation can be compensated by the targeted influence on the local process medium distribution.
- process media collect in particular on wide and steep flank sub-areas and valley sub-areas.
- the fleas is particularly relevant since the fleas defines the area of the flank portion from which the capillary effect emanates.
- the amount of the process medium is constant, an excessively high level of fleas can have a detrimental effect on the forming process, as the medium would have to travel a longer distance from the valley (partial) area in order to get to the process-relevant area.
- a deterministic surface structure is understood to mean recurring surface structures which have a defined shape and / or configuration, cf.
- EP 2 892 663 Bl also includes surfaces with a (quasi-) stochastic appearance, which are applied by means of a deterministic texturing process and are thus composed of deterministic form elements.
- Sheet steel is generally to be understood as a flat steel product which can be provided in sheet form or in the form of a plate or in the form of a strip.
- the flank area surrounding the depression, together with the valley area connected in one piece to the flank area, defines a closed volume of the surface structure embossed in the steel sheet by means of skin-passaging.
- the closed volume the so-called empty volume, can be adapted to a process medium to be applied, in particular oil, for later processing by means of a forming process.
- the depth profile is viewed in and / or transversely to the skin-pass rolling direction.
- a targeted asymmetry of the depressions can be set by the shaping elements of the skin-pass roller, preferably in the skin-pass direction, but also alternatively or additionally transversely to the skin-pass direction act on the surface of the steel sheet, dip into the surface of the steel sheet and create the indentations.
- the geometric design (size and depth) of a deterministic surface structure (negative shape) on a tempered steel sheet depends in particular on how the corresponding geometric structure (positive shape, shaping elements) is / will be designed on a skin pass roller.
- Laser texturing processes are preferably used. fertilizer in order to be able to set specific structures (positive shape) on the surface of a skin pass roller by removing material.
- targeted control of the energy, the pulse duration and the selection of a suitable wavelength of a laser beam acting on the surface of the drier roller can have a positive influence on the design of the structure (s); fs, ps and ns pulses are all together suitable for material removal, but the type of energy input and removal on a solid surface is significantly different, as is the size of the heat-affected zone (HAZ).
- the longer the pulse the more the radiant energy is coupled into or reflected from the plasma that is already forming, so it cannot be coupled directly into the skin pass roller surface.
- a pulse leaves an essentially circular crater on the skin-pass roller surface, which, if there are several craters, depicts the surface or the area of the elevations (surface) on the steel sheet and thus the contact area between the steel sheet and the shaping tool after the skin-pass process.
- a reduction in the pulse duration has an influence on the formation of a crater; in particular, the diameter of the crater can be reduced.
- flank (partial) areas can be set to any desired height, width and / or slope (angle of the flank area).
- the depression viewed in the plane of the surface, has an area which has a center of gravity through which the depth profile is viewed in and / or across the skin-pass rolling direction.
- the depth profile running through the center of gravity, which area of the depression viewed in the plane of the surface, can be shown, for example, in or alternatively or additionally transversely to the skin pass rolling direction, an asymmetry, in particular the Differences in the flank sub-areas and valley sub-areas of the left part and the right part of the depth profile in terms of fleas, in width and / or in slope.
- the left part of the depth profile runs from the highest point to the lowest point and the right part of the Tiefenpro fils from the highest point to the lowest point, the depth profile having a symmetry factor A ⁇ 0.9, where A dem Corresponds to quotients of the integrals of the left and right parts of the depth profile, with the integral with the larger value in the denominator of the quotient.
- the depth profile has a symmetry factor A ⁇ 0.85, preferably A ⁇ 0.8, preferably A ⁇ 0.75, more preferably A ⁇ 0.7, particularly preferably A ⁇ 0.67. The smaller the symmetry factor is set, the more the sheets are conditioned along a given direction, so that, for example, better friction properties and / or better flow resistance properties (laminar or turbulent of fluids) can be achieved along this direction compared to the opposite direction.
- the steel sheet is coated with a metallic coating, in particular with a zinc-based coating which is applied by hot-dip coating.
- the coating can preferably contain additional elements such as aluminum with a content of up to 5% by weight and / or magnesium with a content of up to 5% by weight in the coating.
- Steel sheets with a zinc-based coating have very good cathodic corrosion protection, which has been used in automobile construction for years. If improved corrosion protection is provided, the coating also has magnesium with a content of at least 0.3% by weight, in particular at least 0.6% by weight, preferably at least 0.9% by weight.
- aluminum can be present with a content of at least 0.3% by weight, in particular to improve the bonding of the coating to the steel sheet and in particular a diffusion of iron from the steel sheet into the coating during a heat treatment of the essentially to prevent coated steel sheet so that the positive corrosion properties are retained.
- the thickness of the coating can be between 1 and 15 pm, in particular between 2 and 12 pm, preferably between 3 and 10 pm. Below the minimum limit, no adequate cathodic corrosion protection can be guaranteed and above the maximum limit, joining problems can occur when connecting the inventive If sheet steel or a component made from it occur with another component; in particular, if the maximum limit specified for the thickness of the coating is exceeded, no stable process during thermal joining or welding can be ensured.
- hot-melt exchange coating the steel sheets are first coated with an appropriate coating and then passed to the skin pass. The skin pass takes place after the hot-dip coating of the steel sheet.
- the steel sheet is coated with a metallic coating, in particular a zinc-based coating, which is applied by electrolytic coating.
- the thickness of the coating can be between 1 and 10 ⁇ m, in particular between 1.5 and 8 ⁇ m, preferably between 2 and 5 ⁇ m.
- the steel sheet can first be skin-passed and then electrolytically coated. Depending on the thickness of the coating, the roughness in the flank area can essentially be retained even after the electrolytic coating.
- an electrolytic coating with subsequent skin-passing is also conceivable.
- no coating for example no metallic coating
- the steel sheet is / is coated with a non-metallic coating, for example, in a coil coating system, the steel sheet being coated with a non-metallic coating before or after the coating.
- the particularly coated steel sheet is additionally provided with a process medium, in particular with an oil, with the process medium in particular being incorporated in the surface structure with a layer of up to 2 g / m 2. Due to the dimensioning of the surface structure, there is little need for process medium, so that the layer can be up to 2 g / m 2 , in particular up to 1.5 g / m 2 , preferably up to 1 g / m 2 , preferably up to 0, 6 g / m 2 , more preferably up to 0.4 g / m 2 .
- the process medium is deposited after application essentially in the depressions locally in the flank subareas and valley subareas with a steeper slope, higher height and / or greater width and represents further processes, such as for example shaping processes, preferably for Deep drawing processes, closer to or adjacent to areas relevant to the forming process to improve the lubrication and the friction and thus the wear of the shaping means, such as shaping devices, preferably (deep-drawing) presses, to reduce.
- the process medium is deposited after application essentially in the depressions locally in the flank subareas and valley subareas with a steeper slope, higher height and / or greater width and represents further processes, such as for example shaping processes, preferably for Deep drawing processes, closer to or adjacent to areas relevant to the forming process to improve the lubrication and the friction and thus the wear of the shaping means, such as shaping devices, preferably (deep-drawing) presses, to reduce.
- the invention relates to a method for producing a steel sheet tempered with a deterministic surface structure, comprising the following steps: - providing a steel sheet, - skin-passing the steel sheet with a skin-pass roller, the surface of the skin-pass roller acting on the surface of the steel sheet , is set up with a deterministic surface structure in such a way that after the skin pass the surface structure is embossed into the steel sheet starting from a surface of the steel sheet, the surface structure having a plurality of depressions, each depression having a circumferential flank area which, starting from the surface opens into a valley area, each depression having a depth profile, viewed in a sectional view, which has two opposing flank subareas and one that runs between the flank subareas and the flank subareas r binding valley sub-area, the depth profile being divided into a left part and a right part of the depth profile, the depth profile running asymmetrically, the flank sub-areas and valley sub-areas of the left part and the
- the surface (positive shape) of the skin pass roller forms a surface structure through the action of force on the surface of the steel sheet, which defines depressions with respective valley and flank areas (negative shape) and essentially corresponds to the surface (positive shape) of the skin pass roller.
- the skin pass roller for the formation of a deterministic surface structure can be processed with suitable means, for example by laser, cf. also EP 2 892 663 Bl.
- other removal methods can also be used to adjust a surface on a skin pass roller, for example cutting manufacturing processes with geometrically specific or indefinite cutting edge, chemical see or electrochemical, optical or plasma-induced processes which are suitable for implementing a steel sheet to be dressed with a surface structure and a corresponding asymmetry.
- the steel sheet before the steel sheet is provided, the steel sheet is coated by hot-dip coating.
- the melt for hot-dip coating can preferably contain additional elements such as aluminum with a content of up to 5% by weight and / or magnesium with a content of up to 5% by weight.
- the skin-passed steel sheet is coated by electrolytic coating.
- the steel sheet is additionally provided with process medium, preferably with oil, after skin-passing, the process medium with a layer of up to 2 g / m 2 , more preferably with a layer up to 0.4 g / m 2 is applied.
- FIG. 1 shows in FIG. 1)) an AFM image of a section of a coated steel sheet dressed with a deterministic surface structure according to an exemplary embodiment according to the invention
- FIG. 2 a partial sectional illustration according to section X in FIG. 1, FIG. 3) a partial sectional illustration according to section Y in FIG. 1 and FIG. 4) a partial sectional illustration according to section Z in FIG. 1.
- FIG 1 an atomic force microscopy (AFM) recording of a section of a beschich ended, with a deterministic surface structure (2) dressed steel sheet (1,) ge according to an embodiment of the invention is shown.
- the steel sheet (1) can be an uncoated steel sheet (1), that is to say it has no, in particular, metallic coating or non-metallic coating, or it can be a steel sheet (G) coated with a metallic coating (1.2).
- the deterministic surface structure (2) shows a recurring I-shaped indentation as a depression (2.1).
- the center of gravity (S) in the plane of the surface (1.1) can be determined relatively quickly and easily in the case of an essentially rectangular depression.
- the surface structure (2) was embossed by means of a skin-pass roller (not shown), the surface of the skin-pass roller having been structured by means of a laser, cf. EP 2 892 663 Bl.
- Each depression (2.1) has a circumferential flank area (2.3) which, starting from the surface (1.1), opens into a valley area (2.2).
- the scanning area of atomic force microscopy had an area of 90 x 90 pm 2 , with three areas (framed in white) within the scanning area with an area of 25 x 60 pm 2 each being examined more closely.
- the depth profiles (2.11) determined from the three areas (X, Y, Z) were each combined into an averaged depth profile (2.11) X, Y, Z (shown in dashed lines) and the depth profiles (2.11) determined therefrom in the partial section in the figures 2 to 4 shown enlarged.
- a mean value can be formed from several depth profiles.
- each depression (2.1) has a depth profile (2.11), wel ches two opposite flank subregions (2.31) and one between the flank part io areas (2.31) extending and the flank subareas (2.31) connecting valley subarea (2.21), the depth profile (2.11) being divided into a left part and a right part of the depth profile (2.11), the depth profile (2.11) running asymmetrically, wherein the flank subregions (2.31) and valley subregions (2.21) of the left part and the right part of the depth profile (2.11) differ at least in terms of fleas (h), width (b) and / or incline (a).
- the sectional view (Y) runs, for example, through the center of gravity (S) of the recess (2.1), the depth profile (2.1) being able to run in the rolling direction or across the rolling direction.
- the width (b) is understood to mean the width between the respective highest assigned point (PI, P2) and the lowest point (P3).
- the fleas (h) are determined between the respective highest point (PI, P2) and the lowest point (P3).
- the depth profile (2.11) can thus be divided into a left part and a right part of the depth profile (2.11), with the left part of the depth profile (2.11) starting from the highest point (PI) runs to the lowest point (P3) and the right part of the depth profile (2.11) runs from the highest point (P2) to the lowest point (P3).
- the depth profile (2.11) has an asymmetry factor A ⁇ 0.9, where A corresponds to the quotient of the integrals (Int) of the left and right parts of the depth profile (2.11), the integral (Int) with the larger value in the denominator of the Quotient stands.
- the integrals between the points (PI, P3), left part, and between points (P3, P2), right part correspond to the left and right areas (shown hatched) of the depth profile (2.11) below the depth profile function.
- the three examined areas are compared with their parameters:
- a process medium in the form of a forming oil was applied to the steel sheet (1,) according to the invention, in particular coated with a metallic coating and dresed with a deterministic surface structure (2), and it was able to do so It can be shown that the process medium has collected due to the specifically set asymmetry along a preferred direction of the steel sheet in part of the depth profile (2.11) within the recess (s) (2.1), so that it is necessary in a further deep-drawing test in the Forming process-relevant points can be stocked.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Coating With Molten Metal (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019215580.4A DE102019215580A1 (de) | 2019-10-10 | 2019-10-10 | Stahlblech mit einer deterministischen Oberflächenstruktur |
PCT/EP2020/077098 WO2021069247A1 (de) | 2019-10-10 | 2020-09-28 | Stahlblech mit einer deterministischen oberflächenstruktur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4041467A1 true EP4041467A1 (de) | 2022-08-17 |
EP4041467B1 EP4041467B1 (de) | 2024-02-21 |
Family
ID=72717850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20785704.6A Active EP4041467B1 (de) | 2019-10-10 | 2020-09-28 | Stahlblech mit einer deterministischen oberflächenstruktur sowie verfahren zu dessen herstellung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4041467B1 (de) |
JP (1) | JP2022551479A (de) |
CN (1) | CN114555251A (de) |
DE (1) | DE102019215580A1 (de) |
WO (1) | WO2021069247A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020207561A1 (de) | 2020-06-18 | 2021-12-23 | Thyssenkrupp Steel Europe Ag | Dressiertes und beschichtetes Stahlblech sowie Verfahren zu seiner Herstellung |
DE102022113809A1 (de) | 2022-06-01 | 2023-12-07 | Thyssenkrupp Steel Europe Ag | Metallflachprodukt und Bauteil daraus |
DE102022132638A1 (de) * | 2022-12-08 | 2024-06-13 | Thyssenkrupp Steel Europe Ag | Deterministisch texturierte Arbeitswalze für den Einsatz in einem Kaltwalzwerk, Verfahren zum Herstellen einer deterministisch texturierten Arbeitswalze für den Einsatz in einem Kaltwalzwerk und Kaltwalzwerk |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2659853B2 (ja) * | 1990-07-16 | 1997-09-30 | 三菱重工業株式会社 | 圧延方法 |
EP1136574A1 (de) * | 2000-03-21 | 2001-09-26 | SM Schweizerische Munitionsunternehmung AG | Herstellung eines Prägwerkzeugs und dessen Anwendung |
DE10134506A1 (de) * | 2001-07-04 | 2003-01-30 | Blanco Gmbh & Co Kg | Verfahren zum Herstellen eines Metallblechs, Metallblech und Vorrichtung zum Aufbringen einer Oberflächenstruktur auf ein Metallblech |
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 |
-
2019
- 2019-10-10 DE DE102019215580.4A patent/DE102019215580A1/de active Pending
-
2020
- 2020-09-28 WO PCT/EP2020/077098 patent/WO2021069247A1/de unknown
- 2020-09-28 JP JP2022521367A patent/JP2022551479A/ja active Pending
- 2020-09-28 CN CN202080071225.XA patent/CN114555251A/zh active Pending
- 2020-09-28 EP EP20785704.6A patent/EP4041467B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
WO2021069247A1 (de) | 2021-04-15 |
DE102019215580A1 (de) | 2021-04-15 |
CN114555251A (zh) | 2022-05-27 |
JP2022551479A (ja) | 2022-12-09 |
EP4041467B1 (de) | 2024-02-21 |
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