B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 17/32 (2006.01) B22D 17/00 (2006.01)
Patent
CA 2341264
The invention relates to a method for process monitoring during die casting or vacuum thixoforming of metals in a mold, wherein the time lapse of temperature (T) is continuously measured on at least one point of the system and the temperature progression of the system is calculated in real time using a program. The time lapse of the heat flow (W) is calculated from the temperature progression of the system and the time lapse of the energy (U) of the system and the solidification heat portion (UE) of the metal solidified in the mold are calculated from the heat flow. At a given time, the calculated values are used as monitoring parameters.
L'invention concerne un procédé de surveillance de processus s'utilisant lors du moulage sous pression ou du thixoformage de métaux sous vide, dans un moule, selon lequel la courbe temporelle de la température (T) est mesurée en continu en au moins un point du système et la courbe de température du système est calculée en temps réel à l'aide d'un programme. La courbe temporelle du flux thermique (W) est dérivée de la courbe temporelle du système et la courbe temporelle de l'énergie (U) du système, ainsi que le volume de chaleur de solidification (U¿E?) du métal solidifié dans le moule sont calculés à partir du flux thermique. Des valeurs calculés à un moment déterminé sont utilisées comme paramètres pour la surveillance.
Bagnoud Christophe
Plata Miroslaw
Wahrisch Klaus
Wust Jurgen
Alcan Technology & Management Ag
Alusuisse Technology & Management Ag
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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