Method and apparatus for making carbonaceous article

Details Method and apparatus for making carbonaceous article Method and apparatus for making carbonaceous article

B - Operations, Transporting

29

C

B29C 35/14 (2006.01) C01B 31/00 (2006.01) C04B 35/532 (2006.01) H05B 6/02 (2006.01) H05B 6/10 (2006.01) H05B 7/09 (2006.01)

Patent

CA 2314262

A carbonaceous article (40) is made by baking paste (28) under continuously applied high pressure. The paste (28) is extruded as it is baked to form the article (40), and the article (40) may be further machined after baking. A force opposing extrusion is applied to the article (40) to allow high pressures to be provided to the paste (28). The location of the baking zone both longitudinally and peripherally is carefully controlled to preclude over or under baking. Longitudinal control of the baking zone is effected by measuring the force required to extrude baked paste (28), and peripheral control is effected by measuring the extent of the baking at several peripheral locations and controlling the baking current at these locations.

L'invention porte sur un article carboné (40) obtenu par cuisson d'une pâte (28) sous une pression appliquée en continu. La pâte (28) est extrudée à mesure de sa cuisson pour former l'article (40) qui peut subir un nouvel usinage après cuisson. Une force s'opposant à l'extrusion est appliquée à l'article pour produire les fortes pressions auxquelles la pâte doit être soumise. La zone de cuisson dans le sens longitudinal, et dans celui de la périphérie, est l'objet d'un contrôle rigoureux pour éviter les excès ou les défauts de cuisson. Le contrôle longitudinal de la zone de cuisson se fait par mesure de la force requise pour extruder la pâte cuite (28), tandis que le contrôle périphérique se fait par mesure du niveau de cuisson en plusieurs points de la périphérie et contrôle du courant de cuisson en ces points.

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