Rotary metal extrusion apparatus

Details Rotary metal extrusion apparatus Rotary metal extrusion apparatus

1976-09-24

1977-10-18

Keenan, Michael J.

Metal deforming

By extruding through orifice

By rotating impeller means

B21C 2300

Patent

active

040540480

ABSTRACT:
A rotary metal extrusion apparatus comprises a rotatable drum having a circumferential groove around its outer edge. A shoe, fixed relative to the drum, projects into the groove to form an elongated passageway having one end blocked by an abutment mounted in fixed relation to the shoe. The abutment has an extrusion orifice or die therein or adjacent thereto. The extrusion material is fed into the other end of the passageway and is drawn toward the die and abutment by frictional forces of the drum's groove. The pressure on the extrusion material causes its yield point to be exceeded so that the material is extruded through the die orifice. The portion of the shoe which is in sliding contact with the drum comprises a bearing material to allow sliding contact with the drum surface and reduction of flash through the space between the shoe and the drum.

REFERENCES:
patent: 2754544 (1956-07-01), Bicher, Jr.
patent: 3765216 (1973-10-01), Green
patent: 3872703 (1975-03-01), Green
patent: 3922898 (1975-12-01), Voorhes

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