Method and apparatus for lubricated forward extrusion with radia

Details Method and apparatus for lubricated forward extrusion with radia Method and apparatus for lubricated forward extrusion with radia

1986-05-02

1988-04-05

Larson, Lowell A.

Metal deforming

With cleaning, descaling, or lubrication of work or product

Mechanical cleaning

72254, B21C 4300, B21C 2300

Patent

active

047350709

ABSTRACT:
This invention relates to a method and an apparatus for lubricated forward extrusion of metals and alloys with radial forward removal of an outer shell or sheath. The method according to the invention consists of forming a gap in the form of a plane or slightly truncated cone-shaped circular outer ring having a constant thickness (j) and span (h) and open to the atmosphere between the end of the container adjacent to its bore and the assembly of extrusion tools situated opposite thereto. To facilitate the formation and especially the extraction of the outer shell, the extrusion apparatus comprises several knives situated in the above described gap, having their cutting edge directed towards the axis of the container and dividing the outer shell into as many "petals" in the course of extrusion.

REFERENCES:
patent: 2688400 (1954-09-01), Ansel
patent: 3034642 (1962-05-01), Graham
patent: 3736786 (1973-06-01), Wagner
patent: 4208897 (1980-06-01), Akeret

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