	US 12,104,218 B2
	Sheet metal component and method for producing same
Jennifer Schulz, Unna (DE); Maria Köyer, Dortmund (DE); and Manuela Ruthenberg, Dortmund (DE)
Assigned to ThyssenKrupp Steel Europe AG, Duisburg (DE)
Appl. No. 18/027,201
Filed by ThyssenKrupp Steel Europe AG, Duisburg (DE)
PCT Filed Sep. 17, 2021, PCT No. PCT/EP2021/075671 § 371(c)(1), (2) Date Mar. 20, 2023, PCT Pub. No. WO2022/058531, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 10 2020 124 488.6 (DE), filed on Sep. 21, 2020.
Prior Publication US 2023/0366057 A1, Nov. 16, 2023
Int. Cl. C21D 9/46 (2006.01); C21D 1/18 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C22C 21/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/22 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C23C 2/12 (2006.01); C23C 2/26 (2006.01); C23C 2/28 (2006.01); C23C 2/40 (2006.01)

CPC C21D 9/46 (2013.01) [C21D 1/18 (2013.01); C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 8/0263 (2013.01); C21D 8/0278 (2013.01); C22C 21/02 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/22 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C23C 2/12 (2013.01); C23C 2/26 (2013.01); C23C 2/28 (2013.01); C23C 2/40 (2013.01)]

12 Claims

1. A sheet metal component,

which is made of a hot-formed flat steel product comprising a steel substrate which, in mass. %, consists of:

C: 0.1-0.4%,

Mn: 0.5-3.0%,

Si: 0.05-0.5%,

Cr: 0.005-1.0%,

B: 0.0005-0.01%,

and optionally one or more of alloy elements selected from the group consisting of V, Ti, Nb, Al, Ni, Cu, Mo, and W, with the proviso that the contents of the respective optionally present alloy element are to be measured as follows:

V: 0.001-0.2%,

Ti: 0.001-0.1%,

Nb: 0.001-0.1%,

Al: 0.01-0.2%,

Ni: 0.01-0.4%,

Cu: 0.01-0.8%,

Mo: 0.002-1.0%,

W: 0.001-1.0%,

and the remainder of iron and unavoidable impurities, wherein the unavoidable impurities include contents of less than 0.1% P, less than 0.05% S, and less than 0.01% N,

and

a corrosion protection layer based on aluminum applied to the steel substrate,

wherein the component is optionally hardened,

wherein an adhesive section is provided on an outer surface of the corrosion protection coating, which adhesive section is intended for applying an adhesive for adhering the sheet metal component to another component; and

wherein the outer surface of the corrosion protection coating has an SDR value of 3-30%, determined according to ISO 25178, at least in a region of the adhesive section.