EP4048459A1 - Verfahren zur oberflächenbearbeitung eines bleches und oberflächenbearbeitetes blech - Google Patents
Verfahren zur oberflächenbearbeitung eines bleches und oberflächenbearbeitetes blechInfo
- Publication number
- EP4048459A1 EP4048459A1 EP20793578.4A EP20793578A EP4048459A1 EP 4048459 A1 EP4048459 A1 EP 4048459A1 EP 20793578 A EP20793578 A EP 20793578A EP 4048459 A1 EP4048459 A1 EP 4048459A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- depressions
- sheet
- elevations
- rolled
- extension
- 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.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 88
- 239000002184 metal Substances 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 33
- 238000005096 rolling process Methods 0.000 claims abstract description 21
- 239000000314 lubricant Substances 0.000 claims description 44
- 238000007493 shaping process Methods 0.000 claims description 44
- 238000000576 coating method Methods 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000003618 dip coating Methods 0.000 claims description 6
- 238000004381 surface treatment Methods 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 3
- 108090000623 proteins and genes Proteins 0.000 claims 1
- 230000008569 process Effects 0.000 description 28
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 10
- 229910052725 zinc Inorganic materials 0.000 description 10
- 239000011701 zinc Substances 0.000 description 10
- 238000007373 indentation Methods 0.000 description 9
- 238000005461 lubrication Methods 0.000 description 7
- 230000032258 transport Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005755 formation reaction Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005246 galvanizing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000011850 initial investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Definitions
- the present invention is based on a method for the surface treatment of sheet metal, the sheet metal being rolled with a skin pass roller.
- Sheet metal is usually processed into sheet metal products using mechanical forming processes, such as deep drawing.
- the forces introduced into the sheet metal in this way are transmitted into the sheet metal via the surface of the sheet metal.
- the geometry of the sheet metal product and the frictional forces occurring in the forming process result in some very high local stresses on the sheet metal surface. These local stresses, which are made up of normal and shear forces, can be subject to considerable changes during the forming process. For an optimal forming result, it is necessary to be able to control the sheet flow in a targeted manner during the forming process.
- the sheet flow is controlled, for example, by additional lubrication with lubricants to locally reduce frictional forces between the sheet metal surface and the forming tool and thus to reduce the retention forces.
- the retention forces can be increased, for example, by using pulling beads.
- Laser texturing processes are known from the publication DE 10 2012 017 703 A1, with which Dres sierwalzen can be provided with a deterministic, that is, with a geometrically determined texture.
- This texture is transferred to the surface of the sheet as a negative during the skin pass process, i.e. the rolling of the sheet metal with the skin pass roller. Elevations on the roller surface result in depressions in the surface of the sheet.
- the recesses made in this way in the surface of the sheet metal pre-product are used as so-called lubricant pockets, which hold a lubricant applied to the sheet metal surface and carry it with them during the forming process.
- the functionality of the lubricants used is essentially determined by the lubricant and the additives.
- the additives can, for example, cause the formation of a boundary layer through an accumulation of polymer chains or also through chemical reactions on the metallic surfaces of the forming tool and / or sheet metal precursor and prevent direct contact between the surfaces of the forming tool and sheet metal precursor.
- the bond between the polymer chains is based on van der Waals forces. Therefore, they can be moved relative to one another with comparatively little effort.
- the bonding of the polymer chains to the surfaces of the forming tool and sheet metal intermediate is based on a dipole bond.
- the boundary layer is usually a few nanometers thin and can easily be removed from the surfaces of the forming tool and sheet metal pre-product. In order to prevent direct metallic contact and thus wear of the forming tool and damage to the surface of the sheet metal pre-product through adhesion and abrasion, it is therefore necessary to constantly rewet the surface with lubricant.
- the sheet metal surface must be upgraded to absorb the lubricant, transport it with as little loss as possible and release it locally according to the stress that occurs.
- the stress that arises in the individual case also depends on the sheet material used due to the forming work to be performed and the resulting force level. As the strength of the material increases, so do the local stresses on the surface of the sheet, so that the above-mentioned effect can be observed in particular with materials with higher strengths.
- the document DE 10 2012 017 703 A1 proposes an area proportion of the depressions of 35%, which causes a pronounced increase in the deformation force at the beginning of the deformation process.
- the invention is therefore based on the technical problem of providing a method for the surface treatment of a sheet metal and a sheet metal, which do not have the disadvantages of the prior art, but rather make it possible to reduce adhesion between the sheet metal and the forming process at the beginning of the order forming process.
- This object is achieved by a method for the surface treatment of a sheet metal, the sheet metal being rolled with a skin pass roller, with depressions being rolled into at least one surface of the sheet metal during rolling, with material being displaced when the depressions are rolled in, the displaced material during rolling is specifically shaped to elevations.
- the method according to the invention makes it possible, through the elevations, to provide targeted areas of the surface of the sheet metal which ensure sufficient spacing from a forming tool and thus reduce adhesion between the surface of the sheet metal and a surface of the forming tool.
- material is displaced from the depressions.
- the displaced material is advantageously used to shape the elevations.
- the depressions enable the surface of the sheet metal pre-product, for example, to take up a lubricant and to transport it largely without loss. Only at high loads, i.e. where the lubricant is required to lubricate between the surface of the sheet metal and a forming tool, the lubricant is released locally through plastic deformation of the depressions.
- a lubricant is applied to the surface of the sheet metal.
- the surface is sprayed with oil.
- between 0.25 g / m 2 and 1.5 g / m 2 of oil is applied to the surface.
- a skin pass roller is used, onto which a geometric texture has been applied using a laser texturing process.
- the elevations are shaped so as to be superior to a surface roughness of the sheet metal. It is thus advantageously possible for the spacing between the sheet metal and a forming tool to be controlled to a high degree.
- the fact that the raised areas protrude due to the roughness ensures that contact between the surface of the sheet metal and the surface of the forming tool initially takes place largely between the raised areas and the surface of the forming tool.
- the elevations are specifically formed by concave shaping depressions on a roll surface of the skin pass roller, the fleas of the individual elevations preferably being determined by the geometric shape of the shaping depressions, with particular preference for achieving a first flute he first elevation a first shaping depression with a first extension of a length of a fluff extension surface of the roll surface is used and to achieve a second fleas of a second elevation a second shaping depression with a second extension along the fluff extension surface of the roll surface is used, the first being used Fleas is larger than the second fleas and the first dimension is greater than the second dimension. It is thus advantageously possible to specifically control the shaping of the elevations.
- the fleas of the elevations can be controlled by changing the dimensions of the shaping depressions along a surface that is orthogonal to the fleas of the elevations.
- elevations are initially formed in the area of shaping depressions with a large extension along the surface of the roll surface that extends downward. Elevations in the area of shaping depressions with a lesser extent do not form until later. If one now considers the finite duration of the skin pass process per area on the surface of the sheet, high elevations can be formed by shaping depressions with a large extension and low elevations can be formed by shaping depressions with a small extension.
- Shaping depressions within the meaning of the present invention are geometrical formations on the skin-pass roller that are directed towards the interior of the skin-pass roller. According to a preferred embodiment of the present invention it is provided that the height of the individual elevations is determined by the number of depressions surrounding the elevation per area on the surface. In this way, a further possibility is created in an advantageous manner to control the shaping of the elevations.
- the number of depressions surrounding the elevation per area on the surface has an influence on the amount of displaced material. If less material is displaced, elevations with a smaller height are formed. If more material is displaced, elevations with greater height are formed.
- the depressions and the resulting elevations on the surface of the sheet depend, in addition to the geometrical conditions of the surface of the skin-pass roller, in particular on the material properties of the sheet and the forces acting on the skin-pass rollers (skin pass forces).
- skin pass forces skin pass forces
- Raising radii on the sheet metal side for at least two given geometries which, for example, on the roll side by means of shaping indentations with a certain width, in particular the longitudinal extent of the shaping indentation being greater than the width, and depending on the material properties on which the simulation is based, can be used for different Geometries on the roll surface, relative to the previously determined starting radii, are determined analytically and thus contribute to the targeted design of the roll surface.
- a lift height results from the lift radius.
- the smallest clear dimension in each case is decisive for the deformation resistance k w.
- the material properties are taken into account on the basis of the yield stress, which in turn is a function of the degree of deformation (skin-pass forces).
- the deformation resistance of a surface of a sheet metal is thus the sum of all local deformation resistances.
- the width of the shaping recess is therefore decisive, for example, for the flow of material into a shaping recess.
- the material will preferably flow into larger cavities, ie wider molding depressions . Different shape indentation areas can be identified and compared by inscribed circles in the plane or spatially as spheres.
- the ratio of the initial radius to the final radius can be understood as the degree of deformation within a form function q as a measure of the deformation resistance k w .
- the deformation resistance k w can be determined from the product k and q, where g can be determined from the product of In (/ h + i) and C, where i takes into account different geometries locally within a surface.
- C is a factor to be determined empirically, which can be determined by means of simulation and / or experimentally.
- the factor C can also be used to calibrate the simulation using experimental data.
- the elevation radius r is influenced by adjacent shaped elements, with a circle being defined when viewed in cross section, which is assigned to a shaping depression on the roll side and which touches the contour of the shaping depression in at least two points, with a distance b being derivable between the two points and from this as a result, the amount of increase t can be calculated using the following formula:
- the fleas of the individual elevations is determined by the extent of the depressions surrounding the elevation along the surface of the roll surface per area on the surface.
- the extent of the depressions surrounding the elevation along the surface area of the roller surface per area on the surface has an influence on the amount of displaced material. If less material is displaced, bumps are formed with fewer fleas. If more material is displaced, elevations with larger fleas are formed.
- one or more elevations are formed in an orderly manner in a depression in relation to a plane of extension of the surface. It is thus advantageously possible to arrange one or more raised areas as islands or islands in a depression.
- the spacing of the recess, which is preferably filled with lubricant, from a surface of a forming tool is more stable and targeted, which further lowers the adhesion between the surface of the sheet metal and the forming tool in an advantageous manner.
- the depressions are rolled each having a depth profile along the plane of extension of the surface, the formation of the elevations being supported by the depth profile.
- a depth profile in the context of the present invention is a change in the depth of the depression parallel to the plane of the flat surface of the surface of the metal sheet.
- the elevations are formed with a flea of between 0.1 pm and 3.5 pm and preferably between 0.3 pm and 1.8 pm. Extensive simulations and experiments have shown that a flea of between 0.1 pm and 3.5 pm and preferably between 0.3 pm and 1.8 pm is optimal for the design of the elevations.
- the depressions are rolled in as closed depressions based on a main plane of extent of the sheet metal. This advantageously enables a safe and largely loss-free transport of a lubricant in the depressions.
- one or more further depressions are rolled in based on the main plane of extent of the surface and arranged on an elevation, wherein the further depressions are preferably rolled in as closed further depressions with reference to the main plane of extension of the surface, where in which the further depressions are particularly preferably rolled into the elevation with a depth between 0.05 ⁇ m and 2.5 ⁇ m, in particular between 0.1 ⁇ m and 0.8 ⁇ m.
- the further depressions are particularly preferably rolled into the elevation with a depth between 0.05 ⁇ m and 2.5 ⁇ m, in particular between 0.1 ⁇ m and 0.8 ⁇ m.
- the further depressions make it possible to target a lubricant to a point of contact between the upper surface of the sheet metal and a forming tool created by the elevation.
- the shallow depth of the further indentation has the effect that so little lubricant is carried along through the further indentation that the lubricant in the further indentation does not lead to noticeably more adhesion.
- the depth of the further recess in the sense of the present invention is the depth of the further recess after the surface of the metal sheet has been coated.
- the depressions are rolled in I-shaped, rectangular, oval, round and / or square based on the main plane of extent of the surface. This results in trough-shaped depressions, for example. It has been shown that this enables very effective lubricant transport. However, it is also conceivable that the depressions are triangular and / or cross-shaped in relation to the main plane of extent of the surface of the metal sheet.
- the elevations are shaped I-shaped, rectangular, oval, round and / or square in relation to the main plane of extent of the surface.
- the further elevations are triangular and / or cross-shaped in relation to the main plane of extent of the surface of the metal sheet.
- the depressions with a depth of 0.5 pm to 15 pm, preferably 0.5 pm to 6 pm and particularly preferred from 2 mih to 4 mih are rolled in. This enables the volume of the depressions to be well matched to the required volume of lubricant. If the sheet metal is to be coated, the depth of the depression in the context of the present invention is the depth of the depression after the surface has been coated.
- the depressions are rolled in with a ratio of depth to volume of the depression of 1: 3 to 1:15 and preferably 1: 5 to 1:10. A corresponding ratio also has a positive effect on lubricant transport and targeted local wetting with lubricant.
- the volume of the depression in the context of the present invention is the volume of the depression after the surface has been coated.
- the sheet metal is coated by hot-dip coating, in particular hot-dip galvanizing, the sheet metal being coated before rolling.
- Hot-dip coating is well mastered and is already integrated to a large extent in manufacturing processes.
- the surface is preferably coated with a closed coating, the coating not being pierced when the depressions are rolled in.
- the sheet metal is electrolytically coated, the sheet metal being coated after the rolling.
- the coatings follow the uncoated geometrical course of the surface to be coated very precisely. The coating can therefore take place after the depressions have been rolled in. This sequence enables a very uniform coating, even within the depressions.
- zinc is used as the coating. Zinc is ideal as a coating. When processing the zinc accordingly, the yield point of the zinc is exceeded at the highly stressed points in the forming tool, whereby the lubricant is advantageously released in a targeted manner.
- a zinc coating also prevents corrosion of the sheet metal product.
- a lubricant is introduced into the depressions, the lubricant preferably being introduced after coating and / or rolling.
- the surface is sprayed with oil. It is also conceivable that between 0.25 g / m 2 and 1.5 g / m 2 of oil is applied to the surface.
- Another object of the present invention to achieve the object set out above is a sheet, at least one surface of the sheet has been processed with a method according to the invention.
- FIG. 1 schematically shows a method according to an exemplary embodiment of the present invention.
- FIG. 2 shows schematically a section through a sheet metal according to an exemplary embodiment of the present invention during skin passing.
- FIG. 3 schematically shows a section of the surface of a metal sheet according to an exemplary embodiment of the present invention.
- FIG. 4 schematically shows a section of the surface of a metal sheet according to a further exemplary embodiment of the present invention.
- FIG. 5 shows schematically a section through a sheet metal and a roller according to an exemplary embodiment of the present invention during the Dresing.
- FIG. 6 schematically shows a section of the surface of a roller according to an exemplary embodiment of the present invention.
- the method according to an exemplary embodiment of the present invention is shown schematically in FIG.
- the sheet 1 is provided as a strip and rolled with skin-pass rollers 3. Since the skin pass rollers 3 trough-shaped depressions in the surface (see Figure 2) of the sheet 2. The depressions are several micrometers deep, several micrometers long and wide and can be rolled into about 40% of the surface.
- the skin pass rollers 3 have previously been processed with a laser texturing process in such a way that they have a corresponding negative for rolling in the depressions on their roller surface.
- the negative has an elevation for each depression, the elevation being higher than the depression rolled in by the elevation being deep. This is due, among other things, to the fact that the skin pass rolls 3 do not rest over their entire surface on the surface of the sheet metal pre-product 2 during rolling, which would lead to negative effects for the rolling process.
- a skin pass liquid is preferably arranged between sheet metal pre-product 1 and skin pass roller 3. When the depressions are rolled in, material is displaced, from which elevations are specifically formed on the surface of the sheet 1 (see Figure 2).
- the surfaces in the coating system 4 are electrolytically coated with zinc about 7 ⁇ m thick.
- the zinc layer follows the surface geometry of the underlying surface, in particular the rolled-in depressions and the raised elevations.
- the coating with zinc is carried out by means of hot-dip coating or hot-dip galvanizing. In this case, however, the coating would have to be carried out before skin-passing, since a coating applied by hot-dip coating does not follow the surface geometry of the underlying surface of the metal sheet 1, in particular the rolled-in depressions, so well.
- the rolling in of the depressions and shapes of the elevations after the hot-dip galvanizing would, however, compensate for this disadvantage again.
- the lubricant 8.1 is now applied to the coated surface, which, among other things, collects in the depressions on the coated surface. In order to avoid unnecessary costs and in favor of the environment, it must be ensured that only as much lubricant 8 is applied as the depressions can accommodate.
- the rolled and coated and additionally oiled sheet metal 1 in the form of a strip is cut to length to form a blank, which is then reshaped in a forming tool 5 to form a sheet metal product 2.
- Deep drawing is shown as an example here as a possible form of forming.
- the sheet metal 1, which is still in the form of a plate, is inserted into the forming tool 5. Outer edges of the sheet 1 are held down by hold-down devices 5.3 of the forming tool 5 on flanges 5.4 of the forming tool 5, while the punch 5.1 presses the inner area of the sheet 1 into the die 5.2. This creates loads acting on the sheet 1, including on the Niederhal tern 5.3, the flange 5.4 and the punch 5.1. These loads are in the single-digit MPa range.
- Loads also act on sheet metal 1 at pulling edges 5.5.
- the loads here are significantly higher than on hold-down devices 5.3, flange 5.4 and punch 5.1 and lie in an area in which the coating is plastically deformed, i.e. the depressions are destroyed and the lubricant 8.1 contained in the depressions is released for lubrication.
- the sheet flow from the flanges 5.4 in the direction of the drawing edges 5.5 during the deep-drawing process repeatedly transports new depressions to the drawing edges 5.5, which are also destroyed there by plastic deformation and release the lubricant 8.1 contained therein. This enables continuous and very precisely targeted local lubrication.
- the person skilled in the art understands that the method according to the invention can also be used in other forming processes. Bending, twisting, pressing and stretch forming are only mentioned as further examples, although the examples mentioned are not a complete list of the possible forming processes.
- FIG. 2 schematically shows a section through a sheet metal 1 according to an exemplary embodiment of the present invention during skin pass-through.
- a section can be seen orthogonal to the plane of extension of the surface 7 of the sheet 1.
- the skin pass roller 3 with the shaping elevations 11 rolls depressions 6 into the surface 7 of the sheet 1.
- the material displaced from the depressions 6 is in the shaping depressions 10, 10 ', 10 "formed into elevations 9, 9 ', 9".
- the first shaping depression 10 ‘has a large extent along the surface of the surface of the roll surface.
- the first elevation 9 'formed in the first shaping depression 10' is formed quickly and thus grows into a large fleas during the skin-passing process.
- the second shaping depression 10 ′′ has a small extent along the surface of the roll surface that extends downward.
- the second elevation 9 ′′ formed in the second shaping depression 10 ′′ is formed more slowly and thus grows into
- FIG. 3 shows schematically a section of the surface 7 of a metal sheet 1 according to an exemplary embodiment of the present invention.
- Recesses 6 can be seen, the projections of which onto the plane of extension of the surface 7 are I-shaped.
- the recesses 6 have the lubricant (not shown here).
- the surface 7 has the depressions 6 on more than 30% of its area.
- the elevations 9 are arranged on.
- FIG. 4 schematically shows a section of the surface 7 of a metal sheet 1 according to a further exemplary embodiment of the present invention.
- Recesses 6 can be seen. In the recesses 6, the elevations 9 are completely enclosed by the recesses 6.
- The, like the recesses 6, filled with lubricant (not shown here) further recesses 6 'improve the lubrication of the surface 7 of the sheet 1 in the forming tool, but without noticeably increased adhesion between the surface 7 of the sheet 1 and the Contributing forming tool.
- the amount of lubricant in the further depressions 6 ' is too small to disadvantageously increase the adhesion.
- FIG. 5 shows, in section, a geometry of the roll surface which decreases in width or in extent in the form of shaping depressions 10, 10,, 10 ′′ on the roll 3 from left to right.
- the different geometry on the surface of the roller 3 or the decrease in the width has an influence on the formation of the elevations 9, 9, 9 ′′ on the surface 7 of the sheet 1, so that elevations 9, 9 ', 9 ′′ can be adjusted in a targeted manner corresponding structuring of the surface of the roller 3.
- Different shaping depression areas can be identified by inscribed circles in the plane and compared. In this illustration, four circles with four different radii r result, each of which touches the contour of the associated shaping depression at two points, from which the respective distance b can be derived. From this, in turn, the elevation height t can be determined.
- FIG. 6 schematically shows a section of the surface of a roller 3 according to a further exemplary embodiment of the present invention. Shaping depressions 10, 10 ', 10 ", which can be designed differently, can be seen. Elevations 9, 9 ′, 9 ′′, which can have different radii r and different elevation heights t locally, are shown in a circle.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019216338.6A DE102019216338A1 (de) | 2019-10-23 | 2019-10-23 | Verfahren zur Oberflächenbearbeitung eines Bleches und oberflächenbearbeitetes Blech |
| PCT/EP2020/078196 WO2021078524A1 (de) | 2019-10-23 | 2020-10-08 | Verfahren zur oberflächenbearbeitung eines bleches und oberflächenbearbeitetes blech |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4048459A1 true EP4048459A1 (de) | 2022-08-31 |
Family
ID=72964631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20793578.4A Withdrawn EP4048459A1 (de) | 2019-10-23 | 2020-10-08 | Verfahren zur oberflächenbearbeitung eines bleches und oberflächenbearbeitetes blech |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4048459A1 (de) |
| DE (1) | DE102019216338A1 (de) |
| WO (1) | WO2021078524A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022123890B3 (de) | 2022-09-19 | 2023-11-16 | Thyssenkrupp Steel Europe Ag | Lasertexturierte Arbeitswalze für den Einsatz in einem Kaltwalzwerk, Verfahren zum Herstellen einer lasertexturierten Arbeitswalze für den Einsatz in einem Kaltwalzwerk und Kaltwalzwerk |
| CN117900315B (zh) * | 2024-03-19 | 2024-05-31 | 福建宝诚精密机械有限公司 | 一种汽车钣金加工用冷轧装置 |
Family Cites Families (6)
| 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 |
| US4978583A (en) * | 1986-12-25 | 1990-12-18 | Kawasaki Steel Corporation | Patterned metal plate and production thereof |
| JPH02179302A (ja) * | 1988-12-28 | 1990-07-12 | Sumitomo Metal Ind Ltd | 鮮映性とプレス成形性に優れた鋼板およびその製造方法 |
| AU4936993A (en) * | 1993-09-17 | 1995-04-03 | Sidmar N.V. | Method and device for manufacturing cold rolled metal sheets or strips, and metal sheets or strips obtained |
| 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 |
| DE102016102723B3 (de) * | 2016-02-16 | 2017-06-01 | Salzgitter Flachstahl Gmbh | Dressierarbeitswalze, Verfahren zum Dressieren eines Flachproduktes hiermit und Flachprodukt hieraus |
-
2019
- 2019-10-23 DE DE102019216338.6A patent/DE102019216338A1/de active Pending
-
2020
- 2020-10-08 EP EP20793578.4A patent/EP4048459A1/de not_active Withdrawn
- 2020-10-08 WO PCT/EP2020/078196 patent/WO2021078524A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019216338A1 (de) | 2021-04-29 |
| WO2021078524A1 (de) | 2021-04-29 |
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