Sheet steel having a deterministic surface structure
AssigneeThyssenKrupp Steel Europe AG
InventorsOliver Vogt, Fabian Junge, Christine Bischoff, Burak William Cetinkaya
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Abstract
The invention relates to sheet steel, more particularly a coated sheet steel, which is skin-pass rolled with a deterministic surface structure, and to a method for producing this steel.
Claims9
A sheet steel skin-pass rolled with a deterministic surface structure, where the surface structure, is impressed into the sheet steel starting from a surface of the sheet steel, the surface structure having a flank region which runs, starting from the surface, down to a valley region, wherein the valley region has a roughness Ra of less than 300 nm, the sheet steel having a zinc-based coating, and the coated sheet steel is oiled such that capillary forces acting in a direction of the flank region influences local oil distribution wherein the oil wets the valley region only in small parts or not at all and accumulates in the flank region due to the roughness Ra, wherein the valley region has a roughness Ra of less than 250 nm.
Dependencies are inferred from the claim text.