Apparatus for continuous friction-actuated extrusion

Plastic article or earthenware shaping or treating: apparatus – Means for molding powdered metal – Continuous length product formation

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72262, 419 67, 425224, 425374, B22F 302, B21C 2301

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active

044848765

ABSTRACT:
In a modified "Conform" machine for continuous friction-actuated extrusion of metals, especially particulate copper, the abutment at the outlet end of the working passageway does not fully block the end of the wheel groove. Instead a substantial clearance is left, and metal extruding through it adheres to the wheel to re-enter the working passageway at the entry end. Preferably the abutment is of semicircular cross-section. For a given output rate, a significant reduction in torque, and working stresses, is obtained.

REFERENCES:
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patent: 4041745 (1977-08-01), Moreau
patent: 4044587 (1977-08-01), Green et al.
patent: 4055979 (1977-11-01), Hunter et al.
patent: 4101253 (1978-07-01), Etherington
patent: 4217852 (1980-08-01), Nagai et al.
patent: 4362485 (1982-12-01), Slater et al.
"Improvements Relating to Continuous Extrusion Apparatus", PCT International Publication WO83/00452, Feb. 17, 1983.
Research Disclosure, No. 203, Mar. 1981, (Havant, Hampshire, GB), disclosure No. 20342, "Recent developments in `Conform`-continuous extrusion technology", p. 137, right-hand column, lines 61-65.

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