EP 2135961 B1 20141001 - Method and device for heat treating metallic materials in a protective atmosphere
Title (en)
Method and device for heat treating metallic materials in a protective atmosphere
Title (de)
Verfahren und Einrichtung zur Wärmebehandlung von metallischen Werkstoffen unter Schutzgasatmosphäre
Title (fr)
Procédé et dispositif destinés au traitement à chaud de matières métalliques sous atmosphère protectrice
Publication
Application
Previously filed application
102008029001 20080620 DE
Priority
DE 102008029001 A 20080620
Abstract (en)
[origin: CN101608294A] The present invention includes a protective gas recirculation system for carburizing material gas in an industrial furnace (1), and a method and a device thereof, wherein components of carbon dioxide, oxygen and water vapour are reacted with an input reacting gas to generate carbon monoxide and hydrogen, such that the ''used'' protective gas is used as the protective gas recovered in a recoveringspace (3) to be supplied for one or more positions (2.2) in a processing space (2.1) to form a real cyclic process, and the gas carburization may be implemented continuously by saving the protective gas.
IPC 8 full level
C21D 1/76 (2006.01); C21D 1/773 (2006.01); C21D 11/00 (2006.01); C23C 8/20 (2006.01)
CPC (source: EP US)
C21D 1/763 (2013.01 - EP US); C21D 1/773 (2013.01 - EP US); C21D 11/00 (2013.01 - EP US); C23C 8/20 (2013.01 - EP US)
Designated contracting state (EPC)
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 TR
DOCDB simple family (publication)
DE 102008029001 B3 20090917; CN 101608294 A 20091223; CN 101608294 B 20131023; EP 2135961 A2 20091223; EP 2135961 A3 20130213; EP 2135961 B1 20141001; JP 2010001567 A 20100107; PL 2135961 T3 20150331; RU 2009123209 A 20101227; US 2009314388 A1 20091224; US 8313586 B2 20121120
DOCDB simple family (application)
DE 102008029001 A 20080620; CN 200910146224 A 20090622; EP 09007348 A 20090603; JP 2009139871 A 20090611; PL 09007348 T 20090603; RU 2009123209 A 20090618; US 48734009 A 20090618