Self-sealing extrusion die and die ring and associated extrusion

Details Self-sealing extrusion die and die ring and associated extrusion Self-sealing extrusion die and die ring and associated extrusion

1991-01-11

1992-04-14

Larson, Lowell A.

Metal deforming

By extruding through orifice

Container and/or support therefor

72467, B21C 2502

Patent

active

051036649

ABSTRACT:
The die and die ring and the associated extrusion process of the invention comprises providing an extrusion press including a billet container which holds a billet of material to be extruded and a die assembly which holds a die ring. The die ring is adapted to hold a die. The die ring has a first mating member and the die has a second mating member. The process further includes the step of moving the billet container into contact with the die assembly so that the die ring and die form a seal by means of the first and second mating members. The process further comprises the step of pushing the billet of material through the die assembly such that the extrusion is formed. The die assembly of the invention includes a die ring which contains a die. The die ring has a first mating member and the die has a second mating member. The die has a facing surface having a diameter less than or equal to the diameter of the billet opening of the extrusion press billet container. The die facing surface is co-planar with the entry surface of the die ring and protrudes from the exit surface of the die ring. The force of the billet container on the die assembly causes the die to seal to the die ring by means of the first and second mating members.

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