Indirect extrusion press with billet piercing

  • Inventors:
  • Assignees: Sutton Eng Co
  • Publication Date: June 30, 1982
  • Publication Number: GB-2089704-A

Abstract

A billet container 4 behind the platen 1 of an indirect extrusion press has a billet-receiving passage 5 through it and is movable toward and away from the platen. A billet-piercing mandrel 8 is slidably mounted in a tubular extrusion stem 6 behind the container. During upsetting and piercing of a billet 20 a stationary plug 17 fills the front end of the container passage. As the mandrel pierces the billet the container is free to be moved rearwardly by billet metal tightly engaging it and moving rearwardly around the mandrel, after which the plug is replaced by an extrusion die 12, through which the pierced billet is extruded around the mandrel by the extrusion stem to form a forwardly moving extruded tube. <IMAGE>

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    US-4785652-ANovember 22, 1988Stewart Charles LIndirect extrusion press with ram-mounted turret supporting tooling
    WO-8800502-A1January 28, 1988Stewart Charles LIndirect extrusion press with ram-mounted turret supporting tool