Title:
【発明の名称】引張り成形方法並びに装置
Document Type and Number:
Japanese Patent JP2848701
Kind Code:
B2
Abstract:
A method for stretch shaping an elongated metallic extrusion is disclosed comprising the steps of applying axial tension to an elongated metallic extrusion in an amount sufficient to equal or exceed the yield strength of the extrusion. An external shaping die is applied against a perimetric portion of the outside surface of the extrusion. The die has working faces conforming substantially to a finished cross-sectional shape for the extrusion. While maintaining such tension the die is advanced along a length of the extrusion. An apparatus for stretch shaping an elongated metallic extrusion is also disclosed.
Inventors:
SHIKORA JOSEFU AARU
YAKOBUSU RICHAADO BII
ROTSUDOJOMU TOOMASU JEI
AASAA UIRIAMU AARU
YAKOBUSU RICHAADO BII
ROTSUDOJOMU TOOMASU JEI
AASAA UIRIAMU AARU
Application Number:
JP51190790A
Publication Date:
January 20, 1999
Filing Date:
August 14, 1990
Export Citation:
Assignee:
ARUMINAMU CO OBU AMERIKA
International Classes:
B21D3/00; B21D3/12; B21C35/03; B21D25/00; B21D39/08; (IPC1-7): B21C35/03; B21D3/00
Domestic Patent References:
| JP466220A | ||||
| JP5440267A | ||||
| JP471718A | ||||
| JP481218A |
Attorney, Agent or Firm:
Akira Asamura (3 outside)