Methods and means for the continuous hydrostatic extrusion...

B - Operations – Transporting – 21 – C

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205/22

B21C 23/00 (2006.01)

Patent

CA 1123382

PRECIS DE LA DIVULGATION: Perfectionnement aux procédés et dispositifs d'extrusion hydrostatique continue. En vue de diminuer les fuites de fluide visqueux par les jeux entre rotor et stator nécessaires au fonctionnement de l'appareil, on utilise dans la saignée du rotor, pour faire avancer l'ébauche, un fluide moteur ayant une viscosité supérieure à celle du fluide situé dans la chambre isostatique où règne la pression d'extrusion. La puissance de pompage est, ce de fait, fortement diminuée, et on peut éviter l'emploi de multiplicateurs de pression coûteux et fragiles. L'invention est applicable à l'extrusion hydrostatique continue de métaux.

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