Title:
金属中空体のストレッチ成形方法
Document Type and Number:
Japanese Patent JP4307585
Kind Code:
B2
Abstract:
A process for stretch forming hollow metal bodies, such as aluminum alloy extrusions. The extrusions are stretched longitudinally, bent transversely of the pulling direction, and then subjected to pressure from an incompressible fluid in a hollow interior. In a preferred embodiment, the incompressible fluid is water at a pressure sufficient to deform at least part of the extrusion outwardly of its hollow interior. The incompressible fluid reduces dimensional distortions in the shaped product.
Inventors:
Blairty. Allison
Thomas Jay Van Samaren
Robert P. Evert
John S. Schultz
Thomas Jay Van Samaren
Robert P. Evert
John S. Schultz
Application Number:
JP6871998A
Publication Date:
August 05, 2009
Filing Date:
March 18, 1998
Export Citation:
Assignee:
ALUMINUM COMPANY OF AMERICA
International Classes:
B21D53/86; B21D11/02; B21D26/033; B21D26/041; B21D26/047; B21D51/16; B21D53/88
Domestic Patent References:
| JP61245920A | ||||
| JP55077934A | ||||
| JP6262268A | ||||
| JP53092368A | ||||
| JP8243667A | ||||
| JP62021426A | ||||
| JP58212814A |
Foreign References:
| WO1996012578A1 |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Sadafumi Kobori
Yukihiro Ikeda
Hajime Asamura
Sadafumi Kobori
Yukihiro Ikeda