Indirect metal extrusion and tube press and a sealing plate...

Details Indirect metal extrusion and tube press and a sealing plate... Indirect metal extrusion and tube press and a sealing plate...

B - Operations, Transporting

21

C

205/19

B21C 23/21 (2006.01) B21C 25/06 (2006.01) B21C 27/00 (2006.01)

Patent

CA 1099666

ABSTRACT "Indirect metal extrusion and tube press and a sealing plate and a pressure plate therefor" In order to prevent heat loss by conduction from the billet and billet container in an indirect extrusion press, the sealing plate, which closes off one end of the billet container bore, is made in two parts which are spaced apart when an extrusion stroke is not taking place so that an air gap appears between the two parts to interrupt the path of heat conduction through the sealing plate to the rest of the extrusion press. The air gap may be produced in the pressure plate, between the sealing plate and the moving cross- head, instead of or in addition to the gap in the sealing plate.

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