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US 2023/0201899 A1Published application
Sheet steel having a deterministic surface structure
AssigneeThyssenKrupp Steel Europe AG
InventorsOliver VOGT, Fabian JUNGE, Burak William CETINKAYA
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Abstract
The invention relates to a steel sheet skin-pass rolled with a deterministic surface structure, and to a method for producing it.
Claims11
A steel sheet skin-pass rolled with a deterministic surface structure, wherein the surface structure is impressed into the steel sheet starting from a surface of the steel sheet, wherein the surface structure comprises a flank region that runs from the surface to a trough region, wherein
- at least the flank region has a roughness Ra of greater than 20 nm.
A method for producing a steel sheet skin-pass rolled with a deterministic surface structure, comprising the following steps:
- providing a steel sheet, and
- skin-pass rolling the steel sheet by means of a skin-pass roller, wherein the surface of the skin-pass roller acting on the surface of the steel sheet is configured with a deterministic surface structure in such a way that, after the skin-pass rolling operation, the surface structure is impressed into the steel sheet starting from a surface of the steel sheet, wherein the surface structure comprises a flank region which runs from the surface to a trough region and wherein at least the flank region has a roughness Ra of greater than 20 nm.
Dependencies are inferred from the claim text.