Metal deforming – By application of fluent medium – or energy field – Using fixed die
Patent
1996-09-27
1997-12-02
Jones, David
Metal deforming
By application of fluent medium, or energy field
Using fixed die
72709, 294211, B21D 2602
Patent
active
056924062
ABSTRACT:
An improved die for a superplastic formation process and the process that uses an interface for pressurized gas that is part of the forming die so that tube welding to the forming pack can be eliminated. In one embodiment, the interface is fixed to the die and in a second, for use to pressurize the interior volume of finished parts with inert gas when the finished parts are to be removed from the die hot (1400.degree. F.), the interface becomes welded to the pack during the forming process so that the interior of the part can be flooded with inert gas during the cool down process.
REFERENCES:
patent: 2998622 (1961-09-01), Renoux
patent: 3934441 (1976-01-01), Hamilton et al.
patent: 4331284 (1982-05-01), Schulz et al.
patent: 4420958 (1983-12-01), Shultz et al.
patent: 4534196 (1985-08-01), Kiyota
Jones David
McDonnell Douglas Corporation
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