Apparatus for metal extrusion

Details Apparatus for metal extrusion Apparatus for metal extrusion

1976-01-15

1977-11-08

Lanham, C.W.

Metal deforming

By extruding through orifice

Indirect extrusion

72255, 72263, 72270, 72272, B21C 2304, B21C 2700, B21C 3300, B21C 3506

Patent

active

040569640

ABSTRACT:
An improved apparatus for metal extrusion comprises a main container for receiving a billet as a material to be extruded, a press stem with a splitting disc in the front thereof for pushing the billet, a die assembly retaining a die for extruding the product, and a holding means such as a sub-container located between the main container and the die-assembly for retaining extrusion remnant or butt. An improved extrusion method is also disclosed comprising feeding the billet to the rear end of the main container by means of a billet loading means, inserting the billet into the container by means of the stem provided with a detachable disc or undetachable one in the front thereof, extruding the billet through the die by moving the stem toward the die while longitudinally splitting apart billet "shell" or crust produced during the extrusion into a plurality of strips or pieces, and retracting the stem to the original position. Each of the metal extrusion steps are repeated sequentially in the preset order.

REFERENCES:
patent: 2858017 (1958-10-01), Kent et al.
patent: 2894624 (1959-07-01), Leonard
patent: 3369384 (1968-02-01), Beneke et al.
patent: 3736786 (1973-06-01), Wagner

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