EP 0016846 A1 19801015 - PROCESS FOR PRODUCING HIGH-STRENGTH COLD-ROLLED STEEL PLATE FOR PRESS WORKING.
Title (en)
PROCESS FOR PRODUCING HIGH-STRENGTH COLD-ROLLED STEEL PLATE FOR PRESS WORKING.
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER HOCHFESTERN KALT GEWALZTEN STAHLPLATTE FÜR PRESSFORMEREI.
Title (fr)
PROCEDE DE PREPARATION DE TOLE D'ACIER LAMINEE A FROID A HAUTE RESISTANCE POUR LE TRAVAIL A LA PRESSE.
Publication
Application
Priority
JP 10417278 A 19780826
Abstract (en)
A process for producing a high-strength cold-rolled steel plate for press working having a tensile strength of 35-45 kg/mm<2> and a yield ratio of 0.4-0.6, which comprises hot-rolling steel comprising 0.005-0.080% of C, not more than 0.30% of Si, 1.6-3.5% of Mn, 0.02-0.08% of sol. Al, 0.005-0.020% of N, and balance of Fe and unavoidable impurities, and, after cold-rolling, annealing at 660-750 DEG C for not shorter than 30 minutes.
Abstract (fr)
Procede de preparation de tole d'acier laminee a froid a haute resistance pour le travail a la presse ayant une resistance a la traction de 35-45 kg/m2 et un module d'elasticite de 0,4-0,6 qui comprend un acier lamine a chaud contenant 0,0005-0,080%, de C, pas plus de 0,30% de Si, 1,6-3,5% de Mn, 0,020-0,08% d'A1, 0,005-0,02% de N et le complement en Fe et impuretes inevitables et apres laminage a froid, l'on recuit a 660-750 C pendant au moins 30 minutes.
IPC 1-7
IPC 8 full level
C21D 8/02 (2006.01); C22C 38/00 (2006.01); C21D 9/46 (2006.01); C21D 9/48 (2006.01); C22C 38/04 (2006.01)
CPC (source: EP)
C21D 8/0236 (2013.01); C21D 9/48 (2013.01); C22C 38/04 (2013.01); C21D 8/0226 (2013.01); C21D 8/0273 (2013.01)
Designated contracting state (EPC)
FR
DOCDB simple family (publication)
EP 0016846 A1 19801015; EP 0016846 A4 19801114; EP 0016846 B1 19830817; DE 2953072 C1 19850321; GB 2039951 A 19800820; GB 2039951 B 19821006; IT 1121469 B 19860402; IT 7968708 A0 19790824; JP S5531159 A 19800305; WO 8000456 A1 19800320
DOCDB simple family (application)
EP 79901046 A 19800325; DE 2953072 A 19790825; GB 8013072 A 19790825; IT 6870879 A 19790824; JP 10417278 A 19780826; JP 7900227 W 19790825