EP 3414028 B1 20200408 - METHOD AND DEVICE FOR PRODUCING HARDENED STEEL COMPONENTS
Title (en)
METHOD AND DEVICE FOR PRODUCING HARDENED STEEL COMPONENTS
Title (de)
VERFAHREN UND VORRICHTUNG ZUM ERZEUGEN GEHÄRTETER STAHLBAUTEILE
Title (fr)
PROCÉDÉ ET DISPOSITIF DE FABRICATION DE PIÈCES EN ACIER TREMPÉ
Publication
Application
Priority
- DE 102016102344 A 20160210
- EP 2017052605 W 20170207
Abstract (en)
[origin: WO2017137379A1] The invention relates to a method for hot stamping steel sheet metal components, wherein a sheet metal blank is cut from a steel sheet metal strip made of a hardenable steel alloy and the sheet metal blank is then austenitized in that it is heated to a temperature of more than Ac3 and is then placed into a forming tool and formed in the forming tool and, during forming, is cooled at a rate above the critical cooling rate, characterized in that oxygen is supplied to the sheet metal blank to be formed, adjacent to positive radii and/or drawing edges, during the forming and hardening process in order to prevent microcracks of the second type. The invention also relates to a device therefor.
IPC 8 full level
B21D 22/02 (2006.01); B21D 22/06 (2006.01); C21D 1/673 (2006.01)
CPC (source: EP KR US)
B21D 22/022 (2013.01 - EP US); B21D 22/06 (2013.01 - EP US); B21D 22/20 (2013.01 - KR); B21D 22/208 (2013.01 - EP US); B21D 37/16 (2013.01 - EP KR US); C21D 1/613 (2013.01 - EP US); C21D 1/673 (2013.01 - EP KR US); C21D 9/46 (2013.01 - EP US); C21D 2211/001 (2013.01 - EP KR 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
DOCDB simple family (publication)
DE 102016102344 A1 20170810; DE 102016102344 B4 20200924; CN 109070173 A 20181221; CN 109070173 B 20210427; EP 3414028 A1 20181219; EP 3414028 B1 20200408; ES 2786781 T3 20201013; JP 2019504772 A 20190221; JP 6692911 B2 20200513; KR 102224344 B1 20210309; KR 20180114104 A 20181017; US 2019047032 A1 20190214; WO 2017137379 A1 20170817
DOCDB simple family (application)
DE 102016102344 A 20160210; CN 201780010625 A 20170207; EP 17703744 A 20170207; EP 2017052605 W 20170207; ES 17703744 T 20170207; JP 2018541172 A 20170207; KR 20187025953 A 20170207; US 201716076975 A 20170207