Indirect metal extrusion and tube press and a sealing plate and

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

1978-08-29

1980-07-15

Husar, Francis S.

Metal deforming

By extruding through orifice

72273, 72342, B21C 2600, B21C 2900

Patent

active

042121825

ABSTRACT:
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.

REFERENCES:
patent: 3112828 (1963-12-01), Zipf
patent: 3919873 (1975-11-01), Biswas et al.

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