EP 3533886 A1 20190904 - METHOD FOR PRODUCING STEEL MEMBER, AND STEEL MEMBER
Title (en)
METHOD FOR PRODUCING STEEL MEMBER, AND STEEL MEMBER
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES STAHLELEMENTS UND STAHLELEMENT
Title (fr)
PROCÉDÉ DE PRODUCTION D'ÉLÉMENT EN ACIER, ET ÉLÉMENT EN ACIER
Publication
Application
Priority
JP 2016082222 W 20161031
Abstract (en)
A manufacturing method of a steel component includes: heating a steel sheet in a carburizing atmosphere to form a carburized layer on a surface of the steel sheet, the steel sheet having: a chemical composition represented by: in mass%, C: 0.0005 to 0.1%; Si: 0.01 to 2.0%; Mn: 0.05 to 3.0%; Al: 0.9% or less; P: 0.05% or less; S: 0.01% or less; Ti: 0.0 to 0.2%; Nb: 0.0 to 0.1%; Cr: 0 to 2%; Mo: 0.0 to 0.2%; B: 0.000 to 0.005%; and the balance: Fe and impurities; and a steel structure represented by ferrite with an area fraction of 70% or more; and forming the steel sheet by using metal dies, and performing quenching on the steel sheet in a state of housing the steel sheet in the metal dies to transform the carburized layer into martensite and make a part of the steel sheet on the further inside than the carburized layer to be a steel structure represented by ferrite with an area fraction of 50% or more.
IPC 8 full level
C21D 9/00 (2006.01); B21D 22/20 (2006.01); C21D 1/18 (2006.01); C22C 38/00 (2006.01); C22C 38/38 (2006.01); C23C 8/22 (2006.01); C23C 8/32 (2006.01)
CPC (source: CN EP KR RU US)
B21D 22/20 (2013.01 - CN KR US); C21D 1/06 (2013.01 - EP US); C21D 1/18 (2013.01 - CN EP US); C21D 1/673 (2013.01 - EP); C21D 1/78 (2013.01 - RU); C21D 8/02 (2013.01 - RU); C21D 8/0257 (2013.01 - EP US); C21D 8/0457 (2013.01 - CN); C21D 9/00 (2013.01 - EP KR US); C21D 9/0081 (2013.01 - CN); C22C 38/00 (2013.01 - EP RU US); C22C 38/004 (2013.01 - CN EP US); C22C 38/02 (2013.01 - CN EP US); C22C 38/04 (2013.01 - CN EP US); C22C 38/06 (2013.01 - CN EP US); C22C 38/12 (2013.01 - CN EP US); C22C 38/14 (2013.01 - CN EP US); C22C 38/18 (2013.01 - CN); C22C 38/22 (2013.01 - CN); C22C 38/26 (2013.01 - CN); C22C 38/28 (2013.01 - CN); C22C 38/32 (2013.01 - CN); C22C 38/34 (2013.01 - CN); C22C 38/38 (2013.01 - CN EP KR US); C23C 8/20 (2013.01 - RU); C23C 8/22 (2013.01 - CN EP KR US); C23C 8/32 (2013.01 - CN EP KR US); C21D 2211/005 (2013.01 - CN EP US); C21D 2211/008 (2013.01 - CN EP US)
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)
US 2019218637 A1 20190718; BR 112019005488 A2 20190604; CA 3040634 A1 20180503; CN 109906278 A 20190618; CN 109906278 B 20220315; CN 113881900 A 20220104; CN 113881900 B 20220830; EP 3533886 A1 20190904; EP 3533886 A4 20200401; JP 6835095 B2 20210224; JP WO2018078844 A1 20190624; KR 20190042067 A 20190423; MX 2019004389 A 20190715; RU 2711060 C1 20200115; WO 2018078844 A1 20180503
DOCDB simple family (application)
US 201616332719 A 20161031; BR 112019005488 A 20161031; CA 3040634 A 20161031; CN 201680090225 A 20161031; CN 202111184337 A 20161031; EP 16919933 A 20161031; JP 2016082222 W 20161031; JP 2018547070 A 20161031; KR 20197008511 A 20161031; MX 2019004389 A 20161031; RU 2019111713 A 20161031