Title:
中空金属物品を成形する方法及び装置
Document Type and Number:
Japanese Patent JP5073481
Kind Code:
B2
Abstract:
In hydroforming of hollow metal articles in a die, such as pressure-ram-forming procedures, a method of decreasing cycle time of the forming process, while ensuring acceptable product properties and avoiding failures, by modeling the process using finite element analysis to establish a pressure-time history that optimizes the forming operation and applies failure limits to selected variables such as minimum wall thickness or maximum strain rate, and transferring this pressure-time history to a computer controlling the forming process. Thermocouple and/or continuity sensors are incorporated into the die wall and connected to the computer so as to provide active feedback from the die to the control of the process.
Inventors:
Stuart Earl Mayswen
Ihai Shi
Peter Hamstra
Robert William Mallory
James Di Moulton
Ihai Shi
Peter Hamstra
Robert William Mallory
James Di Moulton
Application Number:
JP2007511814A
Publication Date:
November 14, 2012
Filing Date:
May 12, 2005
Export Citation:
Assignee:
NOVELIS INC.
International Classes:
B21D26/041; B21D22/00; B21D26/047; B21D26/049; B21D51/24
Domestic Patent References:
| JP7236923A |
Foreign References:
| WO2002087802A1 |
Attorney, Agent or Firm:
Takuji Yamada
Mitsuo Tanaka
Kawabata Junichi
Mitsuo Tanaka
Kawabata Junichi