EXTRUSION DIE

PROBLEM TO BE SOLVED: To prevent deflective deformation of an extrusion die and to suppress the deterioration of strength of the extrusion die by reducing an extrusion load applied to the extrusion die at extrusion.SOLUTION: The extrusion die 1 has a plurality of metal holes 6 and a bridge 7 which i...

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Bibliographische Detailangaben
Hauptverfasser:	KITAMURA TAKAYA, TSUTSUI TOSHIMITSU, KUMAMOTO OSAMU
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To prevent deflective deformation of an extrusion die and to suppress the deterioration of strength of the extrusion die by reducing an extrusion load applied to the extrusion die at extrusion.SOLUTION: The extrusion die 1 has a plurality of metal holes 6 and a bridge 7 which is arranged between two adjacent metal holes 6, 6. At least the upstream side portion of the metal hole 6 is formed so that the cross-sectional area increases toward the upstream direction.