EP 3420111 B1 20240124 - PROCESS FOR TARGETED HEAT TREATMENT OF INDIVIDUAL COMPONENT ZONES
Title (en)
PROCESS FOR TARGETED HEAT TREATMENT OF INDIVIDUAL COMPONENT ZONES
Title (de)
VERFAHREN ZUR GEZIELTEN BAUTEILZONENINDIVIDUELLEN WÄRMEBEHANDLUNG
Title (fr)
PROCÉDÉ DE TRAITEMENT THERMIQUE CIBLÉ SUR LES ZONES D'UNE PIÈCE
Publication
Application
Priority
- DE 102016202766 A 20160223
- EP 2017051511 W 20170125
Abstract (en)
[origin: WO2017144217A1] The invention relates to a method and a device for the heat treatment of a steel component directed specifically at individual zones of the component. In one or more first regions of the steel component, a primarily austenitic microstructure can be produced from which a mainly martensitic microstructure can be brought about by means of a quenching process. In one or more second regions of the steel component, a mainly ferritic-pearlitic microstructure can be brought about. In one or more third regions, a mainly bainitic microstructure can be brought about. For this purpose, the steel component is first heated to a temperature below the AC3 temperature in a first furnace, and the steel component is then transferred into a treatment station, wherein the steel component can be cooled during the transfer process. In the following treatment station, the one or more first regions and the one or more third regions of the steel component are brought to a temperature above the austenitization temperature within a dwell time t151. Then, only the one or more third regions are cooled to a cooling stop temperature ϑS. The steel component is then transferred into a second furnace, the temperature of which lies below the AC3 temperature. There, the temperatures of the three different regions approximate one another.
IPC 8 full level
C21D 8/00 (2006.01); C21D 1/19 (2006.01); C21D 1/34 (2006.01); C21D 1/673 (2006.01); C21D 9/00 (2006.01); C21D 1/62 (2006.01); C21D 1/667 (2006.01)
CPC (source: EP KR US)
C21D 1/19 (2013.01 - EP KR US); C21D 1/34 (2013.01 - EP KR US); C21D 1/673 (2013.01 - EP KR US); C21D 8/005 (2013.01 - EP KR US); C21D 9/0062 (2013.01 - EP KR US); C21D 9/0068 (2013.01 - EP KR US); C21D 1/62 (2013.01 - EP US); C21D 1/667 (2013.01 - EP US); C21D 2211/002 (2013.01 - EP KR US); C21D 2211/005 (2013.01 - EP KR US); C21D 2211/008 (2013.01 - EP KR US); C21D 2211/009 (2013.01 - EP KR US); C21D 2221/00 (2013.01 - EP KR US)
Citation (examination)
- "22nd IFHTSE Congress and European Conference on Heat Treatment 2015 Venice", 16 April 2015 (2015-04-16), Retrieved from the Internet <URL:https://me-kono.eu/conferences/22nd-ifhtse-congress-european-conference-on-heat-treatment-2015-venice> [retrieved on 20210215]
- H. ALTENA ET AL: "Process technology and plant design for bainite hardening", LA METALLURGIA ITALIANA -N. 3 2016, 1 March 2016 (2016-03-01), XP055698902, Retrieved from the Internet <URL:http://www.aimnet.it/allpdf/pdf_pubbli/mar16/Altena.pdf> [retrieved on 20200527]
- ALTENA H ET AL: "Process technology and plant design for bainite hardening", 20 May 2015 (2015-05-20), pages 1 - 9, XP009525676, ISBN: 978-88-98990-03-0, Retrieved from the Internet <URL:http://www.proceedings.com/35082.html>
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 102016202766 A1 20170824; BR 112018016740 A2 20181226; BR 112018016740 B1 20230321; CN 109072326 A 20181221; CN 109072326 B 20210319; EP 3420111 A1 20190102; EP 3420111 B1 20240124; EP 3420111 C0 20240124; JP 2019509401 A 20190404; JP 2022166196 A 20221101; JP 7437466 B2 20240222; KR 102592707 B1 20231020; KR 20180118158 A 20181030; MX 2018009922 A 20190121; US 11118239 B2 20210914; US 2019024199 A1 20190124; WO 2017144217 A1 20170831
DOCDB simple family (application)
DE 102016202766 A 20160223; BR 112018016740 A 20170125; CN 201780013124 A 20170125; EP 17704171 A 20170125; EP 2017051511 W 20170125; JP 2018562405 A 20170125; JP 2022129738 A 20220816; KR 20187026941 A 20170125; MX 2018009922 A 20170125; US 201716078968 A 20170125