Press for hydrostatic extrusion of tubes

Details Press for hydrostatic extrusion of tubes Press for hydrostatic extrusion of tubes

1978-11-17

1980-04-01

Gilden, Leon

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72272, B21D 2210

Patent

active

041955056

ABSTRACT:
In a press for the hydrostatic extrusion of tubes, including a mandrel unit permanently inserted in the pressure chamber of the press and being movable between two axial positions, the unit comprising a mandrel and a tubular sleeve which during the extrusion transmits forces acting on the mandrel to a force-absorbing unit in the press, the sleeve being so constructed as to form an annular gap between the sleeve and the pressure chamber wall, and a stop ring in the gap forming an interference fit with the pressure chamber wall, the sleeve having stop faces thereon designed to cooperate with end faces of the stop ring so as to determine the limit positions of the axially movable mandrel unit.

REFERENCES:
patent: 3751958 (1973-08-01), Nilsson
patent: 3914981 (1975-10-01), Nilsson
patent: 3934442 (1976-01-01), Larker
patent: 4016737 (1977-04-01), Gustafsson
patent: 4081984 (1978-04-01), Gustafsson

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