EP 1445338 B1 20090527 - Process for heat-treating of metal pieces under protective gas
Title (en)
Process for heat-treating of metal pieces under protective gas
Title (de)
Verfahren zum Wärmebehandeln von Metallteilen unter Schutzgas
Title (fr)
Procédé de traitement thermique de piéces metalliques sous une atmosphère inerte
Publication
Application
Priority
DE 10304945 A 20030206
Abstract (en)
[origin: EP1445338A1] A blower rotates continuously at constant speed in the protective gas atmosphere, driven by an electric motor. The current supplied to the motor is measured. During the holding phase (B) at constant high temperature, variation of current consumption by the motor forms a signal for control of the heat treatment process and/or for controlling the replacement rate of protective gas atmosphere.
IPC 8 full level
C21D 1/767 (2006.01); C21D 1/76 (2006.01); C21D 11/00 (2006.01); F27B 9/40 (2006.01); F27B 11/00 (2006.01); F27B 13/14 (2006.01); F27D 7/04 (2006.01); F27D 19/00 (2006.01)
CPC (source: EP)
C21D 1/767 (2013.01); C21D 11/00 (2013.01); F27B 11/00 (2013.01); F27D 7/04 (2013.01); F27D 19/00 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1445338 A1 20040811; EP 1445338 B1 20090527; AT E432368 T1 20090615; DE 10304945 A1 20040819; DE 502004009515 D1 20090709
DOCDB simple family (application)
EP 04002129 A 20040202; AT 04002129 T 20040202; DE 10304945 A 20030206; DE 502004009515 T 20040202