Process for continuous hydrostatic extrusion of metals therefor

Details Process for continuous hydrostatic extrusion of metals therefor Process for continuous hydrostatic extrusion of metals therefor

1979-10-01

1982-08-10

Larson, Lowell A.

Metal deforming

With cleaning, descaling, or lubrication of work or product

Lubricating

72 60, 72262, B21C 2332, B21C 2900

Patent

active

043431690

ABSTRACT:
An improved continuous hydrostatic extrusion process and apparatus for metals is disclosed. In order to reduce the leaks of viscous fluid through the clearances between the rotor and the stator, which clearances are necessary for operation of the apparatus, the drive fluid used in the groove of the rotor to cause forward movement of the blank is of a higher viscosity than the fluid in the isostatic chamber in which extrusion pressure is present. The pumping power is acccordingly greatly reduced and it is possible to avoid the use of expensive and delicate pressure multiplying means.

REFERENCES:
patent: 3731509 (1973-05-01), Fuchs
patent: 3738138 (1973-06-01), Fuchs
patent: 3926023 (1975-12-01), Hayashi et al.
patent: 3967485 (1976-07-01), Oguchi et al.
patent: 4041745 (1977-08-01), Moreau
patent: 4111023 (1978-09-01), Moreau
patent: 4163377 (1979-08-01), Moreau

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