Metal deforming – By application of fluent medium – or energy field – Using fixed die
Patent
1975-11-07
1978-04-11
Gilden, Leon
Metal deforming
By application of fluent medium, or energy field
Using fixed die
72DIG31, B21C 2300
Patent
active
040832147
ABSTRACT:
A hydrostatic extrusion process and an apparatus therefor includes a mandrel and a stem which are movable independently of each other, and a seal block which is utilized for increasing the pressure of the pressure medium for performance of the extrusion operation of the billet. A supply device pre-disposes an extrusion die, a billet, pressure medium, and a seal block within a supply unit or sleeve and is capable of being moved from a position exterior of the extrusion apparatus station to a position corresponding to the extrusion station, and in this manner, the time period required for completing extrusion cycles is substantially reduced. Still further, a locking mechanism, including a locking slide and a locking plate, are operatively associated with the mandrel for controlling or limiting the axial movement of the mandrel so as to in turn control the loading and tensioning of the same in order to prevent damage thereto.
REFERENCES:
patent: 3072251 (1963-01-01), Sauve
patent: 3531965 (1970-10-01), Nilsson
patent: 3698220 (1972-10-01), Nilsson et al.
patent: 3702555 (1972-11-01), Larker
patent: 3821888 (1974-07-01), Stewart
Asari Akira
Tsuzuki Hidehiro
(Kobe Steel, Ltd.)
Gilden Leon
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