EP 1842930 A1 20071010 - Process for heat treatment
Title (en)
Process for heat treatment
Title (de)
Verfahren zur Wärmebehandlung
Title (fr)
Procédé de traitement thermique
Publication
Application
Priority
DE 102006015739 A 20060404
Abstract (en)
In a heat treatment process work pieces are placed within an oven in which the existing hot atmosphere is circulated by the jet injection of a further gas e.g. nitrogen to drive the circulation process. The injected gas is introduced essentially transverse to the oven longitudinal axis at a speed above 50 m/s, preferably above the speed of sound and at a pressure of 2 to 10 bar. The gas is injected in pulses together with a gaseous or liquid hydrocarbon agent at a pressure above 100 bar.
Abstract (de)
Die Erfindung betrifft ein Verfahren zur Wärmebehandlung von Werkstücken in einem Wärmebehandlungsofen, wobei die Behandlungsatmosphäre in dem Wärmebehandlungsofen umgewälzt wird. Erfindungsgemäß wird ein Treibgas so in den Wärmebehandlungsofen eingedüst, dass die Behandlungsatmosphäre im Wesentlichen durch das eingedüste Treibgas umgewälzt wird.
IPC 8 full level
C21D 1/767 (2006.01); C21D 9/00 (2006.01); F27B 9/30 (2006.01); F27D 7/02 (2006.01)
CPC (source: EP)
C21D 1/767 (2013.01); C21D 9/0056 (2013.01); F27B 9/3011 (2013.01); F27D 7/02 (2013.01)
Citation (search report)
- [XA] US 4191525 A 19800304 - SALLMAN CHARLES M [US]
- [X] US 5795146 A 19980818 - ORBECK GARY A [US]
- [DX] EP 0355520 A2 19900228 - LINDE AG [DE]
- [X] EP 1004837 A1 20000531 - PLANA QUEROL JOAQUIN [ES]
- [A] EP 0075438 A1 19830330 - BRITISH OXYGEN CO LTD [GB]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1842930 A1 20071010; DE 102006015739 A1 20071011; ES 2462543 T3 20140523
DOCDB simple family (application)
EP 06015702 A 20060727; DE 102006015739 A 20060404; ES 07006603 T 20070329