EP 4296385 A1 20231227 - METHOD FOR MANUFACTURING STEEL SHEET
Title (en)
METHOD FOR MANUFACTURING STEEL SHEET
Title (de)
VERFAHREN ZUR HERSTELLUNG VON STAHLBLECH
Title (fr)
PROCÉDÉ DE FABRICATION DE TÔLE EN ACIER
Publication
Application
Priority
- JP 2021036228 A 20210308
- JP 2021204254 A 20211216
- JP 2022008962 W 20220302
Abstract (en)
A method for manufacturing a steel sheet according to the present invention includes a step of annealing a steel raw material having an Si content of 1.0 mass% or more and a Cr content of 1 mass% or less, under a condition satisfying: a following formula 1A if the Cr content of the steel raw material is 0.2 mass% or more and 0.6 mass% or less; a following formula 1B if the Cr content of the steel raw material is less than 0.2 mass%; or a following formula 1C if the Cr content of the steel raw material is more than 0.6 mass% and 1.0 mass% or less (in the formulas 1A, 1B, and 1C, T is 500°C or higher and represents a soaking temperature (°C) during annealing, t represents a soaking time (seconds) during annealing, and Cr [%] represents the Cr content (mass%) of the steel raw material).
IPC 8 full level
C21D 9/46 (2006.01); C21D 1/26 (2006.01); C21D 1/74 (2006.01); C21D 1/76 (2006.01); C21D 9/52 (2006.01); C22C 38/00 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP KR US)
C21D 1/26 (2013.01 - EP); C21D 6/008 (2013.01 - EP); C21D 8/0226 (2013.01 - KR); C21D 8/0236 (2013.01 - KR US); C21D 8/0273 (2013.01 - KR US); C21D 9/46 (2013.01 - EP KR US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP); C22C 38/06 (2013.01 - EP KR); C22C 38/18 (2013.01 - US); C22C 38/34 (2013.01 - EP KR); C22C 38/38 (2013.01 - EP KR); C23C 2/06 (2013.01 - EP); C23G 1/00 (2013.01 - US); C23G 1/08 (2013.01 - EP KR); C21D 1/76 (2013.01 - EP); C21D 8/0226 (2013.01 - EP); C21D 8/0273 (2013.01 - EP)
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4296385 A1 20231227; KR 20230145590 A 20231017; MX 2023010443 A 20230912; US 2024182998 A1 20240606; WO 2022191006 A1 20220915
DOCDB simple family (application)
EP 22766965 A 20220302; JP 2022008962 W 20220302; KR 20237031385 A 20220302; MX 2023010443 A 20220302; US 202218548260 A 20220302