EP 3625049 A1 20200325 - METHOD FOR PRODUCING STEEL COMPOSITE MATERIALS
Title (en)
METHOD FOR PRODUCING STEEL COMPOSITE MATERIALS
Title (de)
VERFAHREN ZUM ERZEUGEN VON STAHLVERBUNDWERKSTOFFEN
Title (fr)
PROCÉDÉ DE PRODUCTION DE MATÉRIAUX COMPOSITES À BASE D'ACIER
Publication
Application
Priority
- DE 102017110851 A 20170518
- EP 2018063000 W 20180517
Abstract (en)
[origin: WO2018211039A1] The invention relates to a method for producing a steel composite, according to which at least two steel sheets consisting of different steel stocks are placed one on top of the other and hot-rolled together and subsequently optionally cold-rolled. Following the rolling, the composite material produced thereby, consisting of at least two layers with different steel compositions, is diffusion-annealed, the annealing temperature being controlled such that the chemical potential of the steel materials is selected such that the following equation is true: μC, material 1 > μC,material 2, material 1 having a lower carbon content than material 2, such that a carbon uphill diffusion takes place between material 1 and material 2.
IPC 8 full level
B32B 15/01 (2006.01); C21D 8/00 (2006.01); C22C 38/00 (2006.01)
CPC (source: EP US)
B21B 47/00 (2013.01 - US); B32B 15/011 (2013.01 - EP US); C21D 1/26 (2013.01 - EP US); C21D 1/673 (2013.01 - EP US); C21D 8/0205 (2013.01 - EP US); C21D 8/0226 (2013.01 - US); C21D 8/0236 (2013.01 - US); C21D 8/0257 (2013.01 - US); C21D 8/0273 (2013.01 - US); C21D 9/0062 (2013.01 - US); C22C 38/00 (2013.01 - EP US); C22C 38/02 (2013.01 - EP); C22C 38/04 (2013.01 - EP); C22C 38/06 (2013.01 - EP); C22C 38/28 (2013.01 - EP); C22C 38/32 (2013.01 - EP); C23C 2/06 (2013.01 - US); C23C 2/12 (2013.01 - US); C23C 10/00 (2013.01 - EP US); B32B 2250/02 (2013.01 - US); B32B 2250/03 (2013.01 - US); B32B 2250/04 (2013.01 - US); B32B 2250/05 (2013.01 - US); B32B 2311/30 (2013.01 - US); C21D 2211/001 (2013.01 - US); C22C 38/001 (2013.01 - US); C22C 38/002 (2013.01 - US); C22C 38/02 (2013.01 - US); C22C 38/04 (2013.01 - US); C22C 38/06 (2013.01 - US); C22C 38/22 (2013.01 - US); C22C 38/28 (2013.01 - US); C22C 38/32 (2013.01 - US)
Citation (search report)
See references of WO 2018211039A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102017110851 B3 20180802; EP 3625049 A1 20200325; US 11801663 B2 20231031; US 2020094524 A1 20200326; WO 2018211039 A1 20181122
DOCDB simple family (application)
DE 102017110851 A 20170518; EP 18730228 A 20180517; EP 2018063000 W 20180517; US 201816614485 A 20180517