EP 2449138 B1 20130327 - PROCESS OF MANUFACTURING A PART FROM AN AIR HARDENABLE STEEL AND THE PART MANUFACTURED BY THE PROCESS
Title (en)
PROCESS OF MANUFACTURING A PART FROM AN AIR HARDENABLE STEEL AND THE PART MANUFACTURED BY THE PROCESS
Title (de)
VERFAHREN ZUM HERSTELLEN EINES BAUTEILS AUS EINEM LUFTHÄRTBAREN STAHL UND EIN DAMIT HERGESTELLTES BAUTEIL
Title (fr)
PROCÉDÉ DE FABRICATION D'UN PART D'UN ACIER AUTOTREMPANT ET UN PART PRODUIT SELON CETTE PROCÉDÉ
Publication
Application
Priority
- DE 2010000721 W 20100621
- DE 102009031570 A 20090629
- DE 102010024664 A 20100618
Abstract (en)
[origin: WO2011000351A1] The invention relates to a method for producing a component of an air-hardenable steel. The steel is composed of the following elements (contents in mass %): C < 0.20; Al < 0.08; Si < 1.00; Mn 1.20 to < 2.50; P < 0.020; S < 0.015; N < 0.0150; Cr 0.30 to < 1.5; Mo 0.10 to < 0.80; Ti 0.010 to < 0.050; V 0.03 to < 0.20; B 0.0015 to < 0.0060; the remainder being iron including the usual elements present in steel. According to the invention, a hot- or cold-rolled sheet steel or steel pipe section is heated to a temperature of dblank = 800 to 1050 °C and is subsequently formed in a shaping tool into a component. After removal from the tool, it is cooled in air wherein, after the removal from the shaping tool, the component still has a temperature above dremoval = 200 °C and below 800 °C and achieves the required mechanical properties during the air-cooling process.
IPC 8 full level
CPC (source: EP KR US)
C21D 1/02 (2013.01 - EP KR US); C21D 1/673 (2013.01 - EP KR US); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0236 (2013.01 - EP KR US); C21D 9/48 (2013.01 - EP KR US); C22C 38/22 (2013.01 - KR); C22C 38/24 (2013.01 - KR); C22C 38/28 (2013.01 - KR); C22C 38/32 (2013.01 - KR); C22C 38/38 (2013.01 - KR); Y10T 428/12229 (2015.01 - 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 SE SI SK SM TR
DOCDB simple family (publication)
WO 2011000351 A1 20110106; DE 102010024664 A1 20110217; EP 2449138 A1 20120509; EP 2449138 B1 20130327; KR 101685514 B1 20161212; KR 20120099361 A 20120910; RU 2012102993 A 20130810; RU 2539883 C2 20150127; US 2012107632 A1 20120503; US 8404061 B2 20130326
DOCDB simple family (application)
DE 2010000721 W 20100621; DE 102010024664 A 20100618; EP 10739473 A 20100621; KR 20127001049 A 20100621; RU 2012102993 A 20100621; US 201013381128 A 20100621