Metal deforming – By application of fluent medium – or energy field – Using fixed die
Patent
1993-10-15
1995-05-30
Jones, David
Metal deforming
By application of fluent medium, or energy field
Using fixed die
72709, 294211, B21D 2602
Patent
active
054191700
ABSTRACT:
A gas management system for delivering forming gas under a controlled pressure through a first portion of a piping network to a region of a forming die between a die lid and a blank to be formed in a superplastic forming machine includes a gas pressure regulator in the piping network and two control loops. The first control loop has a first pressure transducer communicating with the piping network downstream of the gas pressure regulator and operatively with the gas pressure regulator. The second control loop includes a pulse controller downstream of the first pressure transducer and a second pressure transducer communicating with the piping network downstream of the pulse controller and operatively with the pulse controller. The gas pressure regulator receives signals from a controller to adjust the pressure at which the gas pressure regulator opens to release gas through the pressure regulator. The system delivers inert gas to a superplastic forming die at a predetermined pressure on a predetermined schedule to achieve optimum forming speed and quality.
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Fischer John R.
Sanders Daniel G.
Takayama Chris J.
Jones David
Neary J. Michael
The Boeing Company
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