US20230002910A1 - Metal sheet having a deterministic surface structure and method for producing a formed and coated sheet-metal component - Google Patents
Metal sheet having a deterministic surface structure and method for producing a formed and coated sheet-metal component Download PDFInfo
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- US20230002910A1 US20230002910A1 US17/779,700 US202017779700A US2023002910A1 US 20230002910 A1 US20230002910 A1 US 20230002910A1 US 202017779700 A US202017779700 A US 202017779700A US 2023002910 A1 US2023002910 A1 US 2023002910A1
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- sheet metal
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- coating
- surface structure
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 90
- 239000002184 metal Substances 0.000 title claims abstract description 90
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000000576 coating method Methods 0.000 claims description 58
- 239000011248 coating agent Substances 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 38
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 15
- 229910052725 zinc Inorganic materials 0.000 claims description 15
- 239000011701 zinc Substances 0.000 claims description 15
- 229910019142 PO4 Inorganic materials 0.000 claims description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 13
- 239000010452 phosphate Substances 0.000 claims description 13
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 9
- 229910000077 silane Inorganic materials 0.000 claims description 9
- 239000003929 acidic solution Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 description 21
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 9
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 8
- 229910000165 zinc phosphate Inorganic materials 0.000 description 8
- 239000013078 crystal Substances 0.000 description 7
- 230000036961 partial effect Effects 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000004630 atomic force microscopy Methods 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000003618 dip coating Methods 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction 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
- 238000005304 joining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910001463 metal phosphate Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
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- 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
-
- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/10—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form into a peculiar profiling shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets
- B21H8/005—Embossing sheets or rolls
-
- 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
- C23C2/06—Zinc or cadmium 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
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
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- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/12—Orthophosphates containing zinc cations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/14—Roughness
-
- 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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
Definitions
- the invention relates to a sheet metal having a deterministic surface structure, the surface structure being impressed into the sheet metal, the surface structure having at least one peak region and at least one valley region, the peak region and the valley region being joined by a flank region.
- the invention further relates to a method for producing a formed and coated sheet-metal component.
- Zinc phosphate layers are used for the surface finishing of coated (galvanized, hot-dip aluminized) and uncoated sheet metals in order to achieve significant improvements in surface-relevant properties. This includes in particular increasing the corrosion resistance and also improving the formability and coating-material adhesion.
- Zinc phosphate coats are inorganic crystalline metal phosphate layers which are deposited from an aqueous phase. Rather than being continuous layers, they constitute an accumulation of individual zinc phosphate crystals, with a whole host of production factors determining the position, size, distribution, composition, and chemical and mechanical properties of these crystals. These factors include in particular the composition of the phosphating solution, the preparation of the substrate, and the process parameters during phosphating.
- the phosphating process is a multistage process which as well as multistage rinsing steps is made up in particular of a pretreatment step, an activation step, and at least one phosphating step.
- the crystals serve, furthermore, as an ideal adhesion base for coating materials.
- a defined surface structure on a skin-pass-roll sheet metal is essential for further processes particularly in the further-processing industry for the manufacture of sheet-metal components in the automobile segment.
- process media used such as oil and/or lubricants, for example, to be present uniformly and in the required surface weight at areas relevant to the forming process.
- the sheet metal is subjected to a rolling procedure (skin-pass rolling) in which, among other things, a roughness is established on the sheet metal using textured skin-pass rolls.
- the skin-pass rolling it is for example possible to eliminate and/or compensate strip corrugation, among other adverse factors, if the sheet metal has been subjected in particular beforehand to a thermal treatment (annealing, etc.).
- Another effect of the skin-pass rolling is to reduce the thickness and/or extent of the length between incoming and outgoing sheet/strip (degree of skin-pass rolling), thereby making it possible to tailor qualities including the mechanical properties of the sheet metal.
- sheet metals having a deterministic surface structure can be produced which not only combine the aforesaid advantages but are also able to replace entirely or at least partly a conventional zinc phosphating, by creating an artificial increase in the surface area, such that the peak region and/or the valley region has a substructure which is configured in such a way that the substructure has a surface greater by at least 3% in comparison to a flat projection face of the peak region and/or of the valley region, or has an Sdr of at least 3%.
- the increase in surface area is generated no longer by a zinc phosphating or by zinc phosphate crystals, but rather by a larger surface area, which can be custom-tailored.
- the custom-tailored surface area enlargement not only serves as an optimal adhesion base for a coating of material, but may also consequently promote the suitability for adhesion, by means of a larger interface provided, with the adhesive able to be offered a corresponding reaction area.
- the substructure has more particularly a surface area which is greater by at least 7%, preferably by at least 10%, preferably by at least 15%, more preferably by at least 20%, in comparison to the flat projection face of the peak region and/or of the valley region, more particularly as determined by atomic force microscopy (AFM), which enables, for example, a resolution with an area of up to 90 ⁇ 90 ⁇ m 2 .
- AFM atomic force microscopy
- a flat projection face of the peak region or valley region refers to a planar face which can be viewed and/or determined in plan view, parallel to the sheet metal plane.
- the greater surface area generated by the substructure in the peak region or valley region corresponds to the actual, determinable three-dimensional surface/face.
- the Sdr relates to a developed boundary value ratio and is also a measure of the surface enlargement, indicating the percentage of the additional area of a definition region that is attributable to a texture (substructure), in comparison to the absolutely planar definition region, with the definition region (resolution) being able to be directed at a part of the valley region or at a valley region and/or at a part of the peak region or at a peak region.
- the substructure more particularly has an Sdr of at least 7%, preferably of at least 10%, preferably of at least 15%, more preferably of at least 20%.
- a flat surface has an Sdr of zero.
- the Sdr for example is also determinable by or by means of atomic force microscopy (AFM).
- a deterministic surface structure is understood to refer to recurring structures (at least one valley region or valley regions and at least one peak region) which have a defined shape and/or configuration; cf. EP 2 892 663 B1. This also includes, in particular, surfaces having a (quasi-)stochastic appearance, which, however, are applied by means of a deterministic texturing method and which therefore are composed of deterministic shape elements.
- the surface structure implemented is more particularly a continuous peak region with a plurality of recurring valley regions, each joined to the peak region by flank regions.
- a sheet metal is to be understood as referring generally to a flat metal product, which may be provided in sheet form or in blank form or in strip form.
- the substructure is configured in a crystal-like manner in the peak region and/or in the valley region.
- the crystal-like configuration may be implemented lengthwise and/or spherically and/or ovally as an elevation and/or an indentation in the peak region and/or valley region, with the establishment more particularly of a length, width or diameter of the crystal-like configuration of between 0.5 and 20 ⁇ m, more particularly between 0.9 and 15 ⁇ m, preferably between 1.2 and 10 ⁇ m.
- the sheet metal is coated with a metallic coating.
- the sheet metal may be coated with a zinc-based coating which is applied by hot-dip coating. More particularly the sheet metal is a sheet steel.
- the coating may preferably comprise elements such as aluminum with an amount of up to 5 wt % and/or magnesium with an amount of up to 5 wt % in the coatings.
- Sheet steels with zinc-based coating exhibit very good cathodic corrosion resistance, which has been used in automobile construction for years.
- the coating additionally comprises magnesium with an amount of at least 0.3 wt %, more particularly of at least 0.6 wt %, preferably of at least 0.9 wt %.
- Aluminum may be present alternatively or additionally to magnesium, with an amount of at least 0.3 wt %, in order in particular to improve attachment of the coating to the sheet steel and more particularly substantially to prevent diffusion of iron from the sheet steel into the coating when the coated sheet steel is heat-treated, so that the positive corrosion properties continue to be maintained.
- the thickness of the coating in this case may be between 1 and 15 ⁇ m, more particularly between 2 and 12 ⁇ m, preferably between 3 and 10 ⁇ m.
- the sheet steel of the invention below the minimum limit, adequate cathodic corrosion resistance may not be ensured, and above the maximum limit, there may be joining problems when the sheet steel of the invention or a component fabricated from it is joined to another component; in particular, if the maximum limit indicated for the thickness of the coating is exceeded, it is not possible to ensure a stable process during thermal joining or welding.
- the sheet steels are initially coated with such a coating and then passed on for skin-pass rolling. The skin-pass rolling takes place after the hot-dip coating of the sheet steel.
- the sheet metal may be coated with a metallic coating, more particularly a zinc-based coating, applied by electrolytic coating.
- the thickness of the coating may be between 1 and 10 ⁇ m, more particularly between 1.5 and 8 ⁇ m, preferably between 2 and 5 ⁇ m.
- the sheet steel can first be skin-pass rolled and then coated electrolytically. Depending on the thickness of the coating, the roughness in the flank region can be substantially retained even after the electrolytic coating.
- An alternative possibility is initially an electrolytic coating with subsequent skin-pass rolling.
- no coating such as no metallic coating, for example.
- the sheet metal it is also conceivable for the sheet metal to have been/be coated with a nonmetallic coating, in a coil coating facility, for example, with the sheet metal being skin-pass rolled before or after it is coated with a nonmetallic coating.
- the sheet metal is coated with a phosphate coating or silane-based coating, more particularly the thickness of the phosphate coating or silane-based coating being less than 500 nm.
- a phosphate coating or silane-based coating more particularly the thickness of the phosphate coating or silane-based coating being less than 500 nm.
- the sheet metal may be coated with a phosphate coating or with a silane-based coating.
- the thickness of the phosphate coating or silane-based coating may be established at less than 500 nm, more particularly less than 200 nm, preferably less than 100 nm, more preferably less than 50 nm, very preferably less than 25 nm.
- Conventional zinc phosphating forms a coating on the surface of the sheet metal that has a thickness of at least 500 nm and that is insulating, electrically nonconducting, and may therefore have a process-disrupting effect in the case of a welding process, particularly a resistance welding process. Reducing an insulating, electrically nonconducting phosphate coating or silane-based coating to a thickness below 500 nm does not represent a process-disrupting factor.
- the invention relates to a method for producing a formed and coated sheet-metal component, the method comprising the following steps:
- the skin-pass roll with which the surface structure has been impressed into the sheet metal, during the impressing in the peak region and/or in the valley region, has generated a substructure such that a substructure has been generated that has a surface area greater by at least 3% in comparison to a flat projection face of the peak region and/or of the valley region or that has an Sdr of at least 3%.
- a corresponding sheet metal is provided more particularly that is cut before, during and/or after the forming.
- the forming takes place with conventional tools according to implementation.
- the coating of the formed sheet-metal component takes place in a conventional way.
- At least one valley region may be configured as an open structure on a skin-pass roll.
- Peak regions on the skin-pass roll therefore define local and recurring elevations on the surface of the skin-pass roll.
- the peak regions of the skin-pass roll are impressed into the surface of the sheet metal and form a surface structure having a substantially closed structure (closed volume).
- the peak regions of the skin-pass roll therefore generate pocketlike structures on the surface of the sheet metal.
- the closed volume referred to as the empty volume, is able to accommodate a process medium applied for later processing by means in particular of forming processes, such as forming oil, for example.
- a (negative) substructure is formed which by action on the surface of the sheet metal generates a (positive) substructure having a surface area greater by at least 3% in comparison to a flat projection face of the peak region and/or of the valley region, or having an Sdr of at least 3%.
- the generation of a deterministic surface topography with at least one peak region or peak regions and at least one valley region, including (negative) substructure, on the surface of the skin-pass roll may be accomplished in a targeted way by means of a laser texturing process—cf. EP 2 892 663 B1.
- the geometric configuration (size and depth) of the deterministic surface topography in the form of at least one peak region or peak regions and at least one valley region, including (negative) substructure may be brought about individually through the use of a pulsed laser, as a result of depletion of material on the surface of the skin-pass roll. It is possible in particular through targeted actuation of the energy and of the pulse duration of a laser beam acting on the surface of the skin-pass roll to exert influence positively on the design of the structure or structures. With a high or higher pulse duration, the time of interaction between laser beam and skin-pass roll surface goes up, and more material can be ablated on the surface of the skin-pass roll.
- a pulse leaves behind a substantially circular, more particularly concave, crater, which after skin-pass rolling models the surface of the sheet steel.
- a reduction in the pulse duration has an influence on the formation of a crater; more particularly, the diameter of the crater can be reduced.
- no zinc phosphating has been carried out prior to the forming of the sheet metal.
- the costly and inconvenient step of conventional zinc phosphating for the purpose of generating a greater surface area by means of zinc phosphate crystals can be substantially omitted.
- the sheet metal was coated with a phosphate coating or silane-based coating before the sheet metal was provided, more particularly the thickness of the coating being less than 500 nm.
- the phosphating encompasses, in particular, the deposition/laying-down of surfactants, a conversion chemistry or pickling with phosphoric acid, for example.
- the sheet metal has been treated with an acidic solution before or after the surface structure was introduced.
- an “acidic” solution which has a pH of less than 3, more particularly less than 2, preferably less than 1, is used preferably for the cleaning of the surface and/or for the removal of oxide adhesions (oxide coat) on the surface of the sheet metal.
- the sheet-metal component is an outer skin component of a vehicle.
- Outer skin components in particular are subject to stringent requirements in terms of forming suitability and coating-material appearance.
- corresponding outer skin parts can be produced inexpensively.
- the sheet-metal component is a structural part of a vehicle.
- FIG. 1 shows a schematic view in partial section of one embodiment from the prior art
- FIG. 2 shows a schematic view in partial section of one embodiment according to the invention
- FIG. 3 shows a schematic view in partial section of another embodiment according to the invention.
- FIG. 4 shows a schematic sequence of one embodiment according to a method of the invention.
- FIG. 1 shows a schematic view in partial section of one embodiment from the prior art.
- the embodiment may correspond, for example, to the embodiment according to EP 2 892 663 B1.
- a sheet metal ( 1 ) is represented which has a deterministic surface structure ( 2 ), the surface structure ( 2 ) being impressed into the sheet metal ( 1 ), with the surface structure ( 2 ) having at least one peak region ( 1 . 1 ) and at least one valley region ( 1 . 2 ), the peak region ( 1 . 1 ) and the valley region ( 1 . 2 ) being joined by a flank region ( 1 . 3 ).
- the sheet metal ( 1 ) is preferably a sheet steel.
- FIG. 2 shows a schematic view in partial section of one embodiment according to the invention.
- the peak region ( 1 . 1 ) and/or the valley region ( 1 . 2 ) has a substructure ( 1 . 11 , 1 . 21 ) which is configured such that the substructure ( 1 . 11 , 1 . 21 ) has a surface area greater by at least 3% in comparison to a flat projection face (P) of the peak region ( 1 . 1 ) and/or of the valley region ( 1 . 2 ), or has an Sdr of at least 3%.
- the substructure ( 1 . 11 , 1 . 21 ) may be configured in a crystal-like manner in the peak region ( 1 .
- the crystal-like configuration being implemented lengthwise and/or spherically as an elevation and/or indentation, shown as an indentation in this embodiment, in the peak region ( 1 . 1 ) and/or valley region ( 1 . 2 ); it is possible in particular to set a length, width or diameter of the crystal-like configuration of between 0.5 and 20 ⁇ m.
- FIG. 3 shows a schematic view in partial section of another embodiment according to the invention.
- the sheet metal ( 1 ) is coated with a metallic coating ( 3 ), preferably with a zinc-based coating.
- the sheet metal ( 1 ) is coated with a phosphate coating ( 4 ), in which case the thickness of the phosphate coating ( 4 ) may be less than 500 nm.
- a sheet metal ( 1 ) of the invention is provided for the purpose of producing a formed and coated sheet-metal component not shown, (A).
- the sheet metal ( 1 ) provided is formed into a formed sheet-metal component, (B).
- the formed sheet-metal component is coated, (C).
- FIG. 4 shows schematically a corresponding sequence of the method of the invention.
- the formed and coated sheet-metal component not shown may be used as an outer skin part or structural part in the vehicle.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating With Molten Metal (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019219651.9A DE102019219651A1 (de) | 2019-12-16 | 2019-12-16 | Metallblech mit einer deterministischen Oberflächenstruktur und Verfahren zur Herstellung eines umgeformten und lackierten Blechbauteils |
| DE102019219651.9 | 2019-12-16 | ||
| PCT/EP2020/084888 WO2021122106A1 (de) | 2019-12-16 | 2020-12-07 | Metallblech mit einer deterministischen oberflächenstruktur und verfahren zur herstellung eines umgeformten und lackierten blechbauteils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20230002910A1 true US20230002910A1 (en) | 2023-01-05 |
Family
ID=73793190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/779,700 Pending US20230002910A1 (en) | 2019-12-16 | 2020-12-07 | Metal sheet having a deterministic surface structure and method for producing a formed and coated sheet-metal component |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20230002910A1 (de) |
| EP (1) | EP4076777B1 (de) |
| CN (1) | CN114829029A (de) |
| DE (1) | DE102019219651A1 (de) |
| WO (1) | WO2021122106A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021119589A1 (de) | 2021-07-28 | 2023-02-02 | Thyssenkrupp Steel Europe Ag | Metallblech mit einer deterministischen Oberflächenstruktur |
| DE102022102111A1 (de) | 2022-01-31 | 2023-08-03 | Thyssenkrupp Steel Europe Ag | Unbeschichtetes kaltgewalztes Stahlblech für die Warmumformung, Verfahren zur Herstellung eines warmumgeformten Stahlblechbauteils und warmumgeformtes Stahlblechbauteil |
| DE102022123741A1 (de) * | 2022-09-16 | 2024-03-21 | Thyssenkrupp Steel Europe Ag | FAL-beschichtetes Stahlblech für die Warmumformung |
| DE102023106688A1 (de) | 2023-03-17 | 2024-09-19 | Thyssenkrupp Steel Europe Ag | Geklebte Bauteilgruppe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4798772A (en) * | 1986-01-17 | 1989-01-17 | Kawasaki Steel Corporation | Steel sheets for painting and a method of producing the same |
| US20110008644A1 (en) * | 2008-03-17 | 2011-01-13 | Taisei Plas Co., Ltd. | Bonded body of galvanized steel sheet and adherend, and manufacturing method thereof |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4241146A (en) * | 1978-11-20 | 1980-12-23 | Eugene W. Sivachenko | Corrugated plate having variable material thickness and method for making same |
| JPS60133905A (ja) * | 1983-12-23 | 1985-07-17 | Sumitomo Metal Ind Ltd | 塗装外観性の優れた冷延鋼板及びその製造方法 |
| US4841611A (en) * | 1986-07-14 | 1989-06-27 | Kawasaki Steel Corporation | Work roll with dulled surface having geometrically patterned uneven dulled sections for temper rolling |
| DE59005109D1 (de) * | 1990-01-17 | 1994-04-28 | Hjl Projects & Dev | Verfahren zur Bearbeitung von Oberflächen auf Gebilden und nach diesem Verfahren hergestellte Gebilde. |
| US20030079811A1 (en) * | 1992-03-27 | 2003-05-01 | The Louis Berkman Company, An Ohio Corporation | Corrosion-resistant coated metal and method for making the same |
| WO1995007774A1 (en) * | 1993-09-17 | 1995-03-23 | Sidmar N.V. | Method and device for manufacturing cold rolled metal sheets or strips, and metal sheets or strips obtained |
| JP3744964B2 (ja) * | 1995-04-06 | 2006-02-15 | 株式会社アルバック | 成膜装置用構成部品及びその製造方法 |
| CN2851805Y (zh) * | 2005-10-15 | 2006-12-27 | 鞍钢集团新钢铁有限责任公司 | 圆弧边尖头扁豆花纹板 |
| DE102009003508B4 (de) * | 2009-02-19 | 2013-01-24 | Thyssenkrupp Steel Europe Ag | Verfahren zur Herstellung eines pressgehärteten Metallbauteils |
| 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 |
| KR101839245B1 (ko) * | 2016-12-14 | 2018-03-15 | 주식회사 포스코 | 압연롤 및 이에 의해 제조된 도금강판 |
| EP3583239B1 (de) * | 2017-02-17 | 2021-05-19 | voestalpine Stahl GmbH | Verfahren zum herstellen von stahlblechen, stahlblech und dessen verwendung |
| CN209094172U (zh) * | 2018-11-13 | 2019-07-12 | 中冶京诚工程技术有限公司 | 一种用于热轧薄带轧机工作辊的上辊切水板和下辊切水板 |
-
2019
- 2019-12-16 DE DE102019219651.9A patent/DE102019219651A1/de not_active Withdrawn
-
2020
- 2020-12-07 CN CN202080087503.0A patent/CN114829029A/zh active Pending
- 2020-12-07 EP EP20823757.8A patent/EP4076777B1/de active Active
- 2020-12-07 US US17/779,700 patent/US20230002910A1/en active Pending
- 2020-12-07 WO PCT/EP2020/084888 patent/WO2021122106A1/de unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4798772A (en) * | 1986-01-17 | 1989-01-17 | Kawasaki Steel Corporation | Steel sheets for painting and a method of producing the same |
| US20110008644A1 (en) * | 2008-03-17 | 2011-01-13 | Taisei Plas Co., Ltd. | Bonded body of galvanized steel sheet and adherend, and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114829029A (zh) | 2022-07-29 |
| WO2021122106A1 (de) | 2021-06-24 |
| EP4076777A1 (de) | 2022-10-26 |
| EP4076777B1 (de) | 2023-11-15 |
| DE102019219651A1 (de) | 2021-06-17 |
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