Hot forming process
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United States of America Patent
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Dec 9, 1997
Grant Date -
N/A
app pub date -
Apr 20, 1993
filing date -
Apr 20, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process is provided for forming a metallic edge having a three dimensional internal configuration by preparing a metallic edge blank having a two dimensional internal configuration; attaching a flange to the sides of the blank; preheating the blank, forming mandrel and receiver dies to a temperature at which the metal is in a malleable state, with the forming mandrel having an external surface which corresponds to the three dimensional internal configuration of the formed metallic edge; and hot forming the metallic edge by securing the blank within the receiver dies and advancing the mandrel into the inner cavity of the blank through use of a drive means which rotates the mandrel as it advances into the blank while maintaining the blank, mandrel and receiver dies at the malleable temperature.
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