EP 2979772 B1 20180905 - PROCESS FOR PRODUCING STEEL MATERIAL FOR DIE, PROCESS FOR PRODUCING PREHARDENED STEEL PRODUCT FOR DIE, AND PROCESS FOR PRODUCING COLD WORKING DIE
Title (en)
PROCESS FOR PRODUCING STEEL MATERIAL FOR DIE, PROCESS FOR PRODUCING PREHARDENED STEEL PRODUCT FOR DIE, AND PROCESS FOR PRODUCING COLD WORKING DIE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON STAHLMATERIAL FÜR EINE MATRIZE, VERFAHREN ZUR HERSTELLUNG EINES VORGEHÄRTETEN STAHLPRODUKTS FÜR EINE MATRIZE UND VERFAHREN ZUR HERSTELLUNG EINER KALTFORMUNGSMATRIZE
Title (fr)
PROCÉDÉ DE PRODUCTION DE MATÉRIAU D'ACIER POUR MATRICE, PROCÉDÉ DE PRODUCTION DE PRODUIT D'ACIER PRÉDURCI POUR MATRICE, ET PROCÉDÉ DE PRODUCTION DE MATRICE DE FORMAGE À FROID
Publication
Application
Priority
- JP 2013074239 A 20130329
- JP 2014055274 W 20140303
Abstract (en)
[origin: EP2979772A1] A steel raw material applied to manufacture of a cold working die with a hardness of 58HRC or more, is cut for use as a prehardened steel material having a size corresponding to a dimension of the cold working die. The steel raw material is a steel raw material for a die having a quenched and tempered structure and hardness of 58 HRC or more. The steel raw material for a die contains 2% by area or less of primary carbides having a circle-equivalent diameter of 5 µm or more in a cross-sectional structure of the steel raw material. Furthermore, manufacturing method of a steel raw material for a die that is preferable to obtain the steel raw material for a die, a subsequent manufacturing method of a prehardened steel material, and a manufacturing method of a cold working die are provided.
IPC 8 full level
B21D 37/20 (2006.01); B21D 37/01 (2006.01); C21D 1/18 (2006.01); C21D 8/00 (2006.01); C21D 9/00 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/34 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP)
B21D 37/01 (2013.01); C21D 1/25 (2013.01); C21D 9/0068 (2013.01); C22C 38/00 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/34 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/60 (2013.01); C21D 2211/004 (2013.01)
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 2979772 A1 20160203; EP 2979772 A4 20161012; EP 2979772 B1 20180905; JP 2016106176 A 20160616; JP 6032582 B2 20161130; JP 6041231 B2 20161207; JP WO2014156487 A1 20170216; WO 2014156487 A1 20141002
DOCDB simple family (application)
EP 14776113 A 20140303; JP 2014055274 W 20140303; JP 2015227417 A 20151120; JP 2015508213 A 20140303