EP 1160342 A1 20011205 - Method for securing a controlled atmosphere heat treating chamber
Title (en)
Method for securing a controlled atmosphere heat treating chamber
Title (de)
Verfahren zum Sichern eines Gefässes für die thermische Behandlung in Schutzatmosphäre
Title (fr)
Procédé de mise en sécurisation d'une enceinte de traitement thermique fonctionnant sous atmosphère contrôlée
Publication
Application
Priority
FR 0006708 A 20000525
Abstract (en)
Heat treatment enclosure operating under a gas atmosphere is made safe by filling a cooling chamber with a controlled atmosphere with a high hydrogen content, confining a metal strip within the cooling chamber, and balancing the pressures of the gas atmospheres between the chambers. Making safe a heat treatment enclosure operating under a gas atmosphere, in which the enclosure includes a cooling chamber (5) for rapidly cooling a metal strip (1) running from an upstream chamber (2) to a downstream chamber (7) by means of guide rollers (3), involves filling the cooling chamber with a controlled atmosphere with a high hydrogen content, confining the strip within the cooling chamber by means of a pressure-balancing duct(s) (6) and of gas locks placed between the various chambers, and balancing the pressures of the gas atmospheres between the chambers by means of ducts controlling the flow rates of the gas flowing through the gas locks. An Independent claim is also included for a plant for implementing the invented method, including a pressure-balancing duct between the entry and the exit of the cooling chamber.
IPC 1-7
IPC 8 full level
C21D 1/74 (2006.01); C21D 9/56 (2006.01); C21D 9/573 (2006.01)
CPC (source: EP KR US)
C21D 1/74 (2013.01 - KR); C21D 9/561 (2013.01 - EP KR US); C21D 9/565 (2013.01 - EP KR US); C21D 9/573 (2013.01 - KR); C21D 9/573 (2013.01 - EP US)
Citation (search report)
- [Y] WO 9950464 A1 19991007 - KAWASAKI STEEL CO [JP], et al & EP 1069193 A1 20010117 - KAWASAKI STEEL CO [JP]
- [Y] FR 2769696 A1 19990416 - STEIN HEURTEY [FR]
- [AD] EP 0795616 A1 19970917 - STEIN HEURTEY [FR]
- [A] EP 0311030 A1 19890412 - LINDE AG [DE]
- [A] US 3158507 A 19641124 - IRENE ALEXANDER
- [A] US 1987577 A 19350108 - KURT MOERS
Designated contracting state (EPC)
BE DE ES GB IT NL
DOCDB simple family (publication)
EP 1160342 A1 20011205; EP 1160342 B1 20051019; CN 1249256 C 20060405; CN 1327144 A 20011219; DE 1160342 T1 20020523; DE 60114085 D1 20051124; DE 60114085 T2 20060713; ES 2165342 T1 20020316; ES 2165342 T3 20060301; FR 2809418 A1 20011130; FR 2809418 B1 20030516; JP 2002003954 A 20020109; JP 4988096 B2 20120801; KR 100756589 B1 20070910; KR 20010107710 A 20011207; US 2001045024 A1 20011129; US 6547898 B2 20030415
DOCDB simple family (application)
EP 01400953 A 20010412; CN 01118972 A 20010525; DE 01400953 T 20010412; DE 60114085 T 20010412; ES 01400953 T 20010412; FR 0006708 A 20000525; JP 2001156293 A 20010525; KR 20010028595 A 20010524; US 85452001 A 20010515