EP 2679697 A4 20161123 - MANUFACTURING METHOD FOR COLD-WORKING DIE
Title (en)
MANUFACTURING METHOD FOR COLD-WORKING DIE
Title (de)
HERSTELLUNGSVERFAHREN FÜR EINE KALTBEARBEITUNGSMATRIZE
Title (fr)
PROCÉDÉ DE FABRICATION DE MATRICE POUR FORMAGE À FROID
Publication
Application
Priority
- JP 2011034188 A 20110221
- JP 2012053929 W 20120220
Abstract (en)
[origin: EP2679697A1] A manufacturing method for a cold-working die in which steel ingots of a cold-work tool steel are hot worked and made into a base material, the base material is quenched and tempered to a hardness of 58-62 HRC, and then machined into a die shape. The cold-work tool steel comprises, in mass%: 0.6 - 1.2% of C; 0.8 - 2.5% of Si; 0.4 - 2.0% of Mn; 0.03 - 0.1% of S; 5.0 - 9.0% of Cr; 0.5 - 2.0% of Mo and W independently or as a complex (Mo+1/2W); 0.04 - less than 0.3% of Al; and iron and unavoidable impurities as the remainder. The hardness after tempering is preferably at least 60 HRC. The cold-work tool steel may further contain: 1.0% or less of Ni; 1.0% or less of Cu; 1.0% or less of V; and 0.5% or less ofNb.
IPC 8 full level
C21D 6/00 (2006.01); C21D 10/00 (2006.01); C22C 1/02 (2006.01); C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/34 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP)
C21D 6/002 (2013.01); C21D 10/00 (2013.01); C22C 1/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/34 (2013.01)
Citation (search report)
- [X] JP 2006152356 A 20060615 - HITACHI METALS LTD
- [A] US 2010074792 A1 20100325 - MURAKAMI SHOGO [JP], et al
- [A] US 2010135844 A1 20100603 - MURAKAMI SHOGO [JP], et al
- [A] JP 2006169624 A 20060629 - HITACHI METALS LTD
- [A] US 2006157163 A1 20060720 - SHIMIZU TAKAYUKI [JP], et al
- See references of WO 2012115025A1
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
DOCDB simple family (publication)
EP 2679697 A1 20140101; EP 2679697 A4 20161123; EP 2679697 B1 20180627; CN 103403207 A 20131120; CN 103403207 B 20160615; JP 5843173 B2 20160113; JP WO2012115025 A1 20140707; TW 201250010 A 20121216; TW I440726 B 20140611; WO 2012115025 A1 20120830
DOCDB simple family (application)
EP 12749111 A 20120220; CN 201280009869 A 20120220; JP 2012053929 W 20120220; JP 2013501016 A 20120220; TW 101105391 A 20120220