Metal deforming – By application of fluent medium – or energy field – With actuated tool engaging work
Reexamination Certificate
2008-03-21
2010-02-16
Jones, David B (Department: 3725)
Metal deforming
By application of fluent medium, or energy field
With actuated tool engaging work
C072S060000, C072S342700, C072S342800, C072S342940, C072S342960
Reexamination Certificate
active
07661282
ABSTRACT:
Magnesium and other metal alloy sheet materials are deformed at hot forming temperatures into vehicle body panels and other articles. Many such hot forming operations are improved in speed and product quality by predetermining a static recrystallization temperature of the sheet material. As the sheet material is being heated to its hot forming temperature, deformation is commenced below the static recrystallization temperature. As heating and deformation are continued, dynamic recrystallization of the workpiece occurs and deformation may proceed faster and to a greater extent.
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Carter Jon T.
Krajewski Paul E.
Lasceski Joshua D.
Verma Ravi
GM Global Technology Operations Inc.
Jones David B
Reising Ethington P.C.
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