Metallurgical apparatus – Means treating solid metal – By cooling of the solid
Reexamination Certificate
2008-02-06
2009-06-16
Kastler, Scott (Department: 1793)
Metallurgical apparatus
Means treating solid metal
By cooling of the solid
C266S251000
Reexamination Certificate
active
07547410
ABSTRACT:
A metal heat treatment method includes quenching a workpiece by blowing an inert gas onto the workpiece, adjusting the temperature of the inert gas to approximately an isothermal holding temperature of the workpiece for transformation of the workpiece, holding the isothermal holding temperature within a margin of error of approximately plus or minus five degrees Celsius for a given period, and performing a metal heat treatment with the isothermal holding temperature kept statically or dynamically by varying the temperature of the hot-gas.
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Carlson & Gaskey & Olds
Kastler Scott
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