Method and apparatus for the extrusion of tubes of easily oxidiz

Details Method and apparatus for the extrusion of tubes of easily oxidiz Method and apparatus for the extrusion of tubes of easily oxidiz

1980-02-12

1982-02-23

Gilden, Leon

Metal deforming

With cleaning, descaling, or lubrication of work or product

Lubricating

72 38, 72264, 72273, B21B 4502

Patent

active

043163734

ABSTRACT:
A tube extrusion press extrudes tubes through the annular space formed when a mandrel projects into the aperture of an extrusion die. In order to prevent oxidation of the extruded product, the outside of the tube passes into a cooling section immediately downstream of the die, and a protective gas is blown into the interior of the tube through the mandrel which is hollow and has an opening in its tip. Both the inside and the outside of the tube may be coated with a liquid emulsion, and the hollow mandrel can have internal channels for the passage of a cooling liquid.

REFERENCES:
patent: 1741815 (1929-12-01), Boynton
patent: 1995258 (1935-03-01), Stockfeth
patent: 2025666 (1935-12-01), Hanfl
patent: 2252365 (1941-08-01), Fisher
patent: 2865502 (1958-12-01), Ancher
patent: 3157282 (1964-11-01), Hoendele
patent: 3225508 (1965-12-01), Simon
patent: 3362208 (1968-01-01), Murphy et al.
patent: 3767748 (1973-10-01), Rosette

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