US 12,121,945 B2
Sheet steel having a deterministic surface structure
Oliver Vogt, Dortmund (DE); Fabian Junge, Düsseldorf (DE); and Burak William Cetinkaya, Dortmund (DE)
Assigned to ThyssenKrupp Steel Europe AG, Duisburg (DE)
Appl. No. 17/641,695
Filed by ThyssenKrupp Steel Europe AG, Duisburg (DE)
PCT Filed Sep. 8, 2020, PCT No. PCT/EP2020/075056
§ 371(c)(1), (2) Date Jun. 14, 2022,
PCT Pub. No. WO2021/052812, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 10 2019 214 136.6 (DE), filed on Sep. 17, 2019.
Prior Publication US 2023/0201899 A1, Jun. 29, 2023
Int. Cl. B32B 15/01 (2006.01); B21B 1/22 (2006.01); B21B 27/00 (2006.01); B21B 27/02 (2006.01); B32B 3/02 (2006.01); B32B 3/26 (2006.01); B32B 3/30 (2006.01); B32B 15/04 (2006.01); B32B 15/08 (2006.01); B32B 15/18 (2006.01); C21D 7/04 (2006.01); C21D 9/48 (2006.01); C22C 18/00 (2006.01); C22C 18/04 (2006.01); C23C 2/02 (2006.01); C23C 2/04 (2006.01); C23C 2/06 (2006.01); C23C 2/26 (2006.01); C23C 2/36 (2006.01); C23C 2/40 (2006.01); C23C 28/02 (2006.01); C23C 30/00 (2006.01); C25D 3/22 (2006.01); C25D 7/06 (2006.01)
CPC B21B 1/22 (2013.01) [B21B 1/227 (2013.01); B21B 27/005 (2013.01); B21B 27/02 (2013.01); B21B 27/021 (2013.01); B32B 3/02 (2013.01); B32B 3/26 (2013.01); B32B 3/263 (2013.01); B32B 3/30 (2013.01); B32B 15/012 (2013.01); B32B 15/013 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/08 (2013.01); B32B 15/18 (2013.01); C21D 7/04 (2013.01); C21D 9/48 (2013.01); C22C 18/00 (2013.01); C22C 18/04 (2013.01); C23C 2/02 (2013.01); C23C 2/04 (2013.01); C23C 2/06 (2013.01); C23C 2/26 (2013.01); C23C 2/36 (2013.01); C23C 2/40 (2013.01); C23C 28/021 (2013.01); C23C 28/025 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); C25D 3/22 (2013.01); C25D 7/0614 (2013.01); B21B 2001/228 (2013.01); B21B 2261/14 (2013.01); B21B 2263/02 (2013.01); C21D 2221/00 (2013.01); Y10T 428/12229 (2015.01); Y10T 428/12389 (2015.01); Y10T 428/12396 (2015.01); Y10T 428/12556 (2015.01); Y10T 428/12569 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01); Y10T 428/12993 (2015.01); Y10T 428/2495 (2015.01); Y10T 428/24967 (2015.01); Y10T 428/263 (2015.01); Y10T 428/264 (2015.01); Y10T 428/265 (2015.01); Y10T 428/27 (2015.01); Y10T 428/273 (2015.01)] 11 Claims
OG exemplary drawing
 
1. 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 the flank region has a roughness Ra of greater than 20 nm to less than 300 nm wherein the steel sheet further comprises a zinc-based metallic coat which is applied by hot-dip coating, wherein the coat contains in addition to zinc and unavoidable impurities, additional elements including at least one of aluminum with a content of up to 5% by weight and magnesium with a content of up to 5% by weight in the coat, wherein the steel sheet is additionally provided with a process medium with an applied amount of up to 2 g/m2.