Metal deforming – By application of fluent medium – or energy field – Using fixed die
Patent
1995-10-31
1997-05-20
Jones, David
Metal deforming
By application of fluent medium, or energy field
Using fixed die
72 58, B21D 915
Patent
active
056303343
ABSTRACT:
A metal tube is cold formed into a stamped member by tube is cold formed into a stamped member by sealing a tube containing liquid at approximately atmospheric pressure and then stamping the liquid-filled tube in a die. The pressure within the tube increases during the stamping step to force the walls of the tube to conform to the die cavity, eliminating the need to pressurize the tube prior or subsequent to stamping.
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Sanjay Shah et al., Tube Hydroforming: Process Capability and Production Applications, Body Assembly & Manufacturing Proceedings, Internal Body Engineering Conference (Sep. 1994).
William L. Christensen, Hydroforming of Tubular Sections, MetalForming (Oct. 1995).
Greenville Tool & Die Company
Jones David
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