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AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsShoichi Ando, Yoshihisa Doi, Makoto Otsubo
Estimating the term…
A method of, and an apparatus for extruding a billet of a light metal alloy, wherein the billet has an outer diameter smaller than a maximum configuration width and larger than a minimum configuration width of the die hole at its entry side. The billet is pressurized and extruded by a stem to form a preshaped portion which is larger than the entry side configuration of the die hole, at a frontal end portion of the billet near an entry portion of the die hole. The preshaped portion of the billet is subsequently shaped by the die hole into an extruded shape corresponding to the cross-sectional shape of the die hole and of parts formed from the extruded billet, e.g., of an automobile suspension arm. A reduced resistance and a minimized extrusion pressure upon extrusion of a light metal alloy result from the preshaping of the billet and enable realization of a compact and less expensive arrangement of the production facility.
A method of extruding a billet of a light metal alloy from a die hole in a die, comprising the steps of preshaping, by use of a pushing stem, a billet having an outer diameter which is smaller than a maximum width of an entry side configuration of the die hole, thereby forming a frontal end portion of the billet into a preshaped portion which is larger than said entry side configuration, near an entry portion of the die hole, and subsequently extruding the preshaped portion by said die hole into an extruded shape.
An apparatus for extruding a billet of a light metal alloy, comprising:
A method of extruding a billet of a light metal alloy from a die hole in a die, comprising the steps of:
An apparatus for extruding a billet of a light metal alloy, comprising:
Dependencies are inferred from the claim text.