Extrusion press container and liner for same, and method
AssigneeExco Technologies Limited
InventorPaul H. Robbins
Life of this patent
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Abstract
A container for use in a metal extrusion press comprises: a mantle having an elongate body comprising an axial bore; an elongate liner accommodated within the axial bore. The liner comprises a longitudinally extending passage through which a billet is advanced, and an elongate slot adjoining the passage. The container also comprises a vacuum conduit in fluid communication with the passage for removal of gases from the passage during extrusion.
Claims17
A container for use in a metal extrusion press, the container comprising:
- a mantle having an elongate body comprising an axial bore;
- an elongate liner accommodated within the axial bore, the liner comprising:
- a longitudinally extending passage through which a billet is advanced, and
- an elongate slot adjoining the passage, the slot extending from a longitudinal end of the liner and having a width that is less than a circumference of the passage;
- and
- a vacuum conduit in fluid communication with the passage for removal of gases from the passage during extrusion, wherein the vacuum conduit is accommodated within the slot.
A method of operating a metal extrusion press, the extrusion press having an extrusion container and an extrusion die, the method comprising:
- delivering a heated billet to the container;
- advancing the billet into the container and through the extrusion die using an extrusion ram, the container having an elongate liner comprising a longitudinally extending passage through which the billet is advanced;
- and
- applying suction to the container during said delivering and said advancing, wherein said suction is applied via a vacuum conduit accommodated within a slot adjoining the liner, the slot extending from a longitudinal end of the liner and having a width that is less than a circumference of the longitudinally extending passage.
Dependencies are inferred from the claim text.