Global Patent Index - EP 1160342 A1

EP 1160342 A1 2001-12-05 - 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

EP 1160342 A1 (FR)

Application

EP 01400953 A

Priority

FR 0006708 A

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 (main, further and additional classification)

C21D 9/56

IPC 8 full level (invention and additional information)

C21D 1/74 (2006.01); C21D 9/56 (2006.01); C21D 9/573 (2006.01)

CPC (invention and additional information)

C21D 9/565 (2013.01); C21D 9/561 (2013.01); C21D 9/573 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE DE ES GB IT NL

EPO simple patent family

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; US 2001045024 A1 20011129; US 6547898 B2 20030415

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2009-06-24 [REG ES PC2A] TRANSFER OF PATENT

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- Owner name: FIVES STEIN SOCIETE ANONYME

2006-09-27 [26N] NO OPPOSITION FILED

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