Sheet steel having a deterministic surface structure
AssigneeThyssenKrupp Steel Europe AG
InventorsOliver VOGT, Fabian JUNGE, Burak William CENTINKAYA
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Abstract
The invention relates to a sheet steel skin-pass rolled with a deterministic surface structure, and to a method for producing it.
Claims14
A sheet steel skin-pass rolled with a deterministic surface structure, wherein the surface structure is impressed into the sheet steel starting from a surface of the sheet steel, wherein the surface structure has a multiplicity of indentations, wherein each indentation has an encircling flank region which leads, starting from the surface, down to a valley region, wherein, as viewed in a sectional illustration, each indentation has a depth profile which comprises two opposite flank subregions and a valley subregion which runs between the flank subregions and which connects the flank subregions, wherein the depth profile is divided into a left-hand part and a right-hand part of the depth profile,
- wherein the depth profile runs in an asymmetrical manner, wherein the flank subregions and valley subregions of the left-hand part and of the right-hand part of the depth profile differ in at least one of height (h), width (b) and gradient (α).
A method for producing a sheet steel skin-pass rolled with a deterministic surface structure, comprising the following steps:
- providing a sheet steel,
- skin-pass rolling the sheet steel with a skin-pass roll, wherein the surface of the skin-pass roll which acts on the surface of the sheet steel is furnished with a deterministic surface structure such that, after the skin-pass rolling, the surface structure is impressed into the sheet steel starting from a surface of the sheet steel, wherein the surface structure has a multiplicity of indentations, wherein each indentation has an encircling flank region which leads, starting from the surface, down to a valley region, wherein, as viewed in a sectional illustration, each indentation has a depth profile which comprises two opposite flank subregions and a valley subregion which runs between the flank subregions and which connects the flank subregions, wherein the depth profile is divided into a left-hand part and a right-hand part of the depth profile, wherein the depth profile runs in an asymmetrical manner, wherein the flank subregions and valley subregions of the left-hand part and of the right-hand part of the depth profile differ in at least one of height (h), width (b) and/or gradient (α).
Dependencies are inferred from the claim text.