US PATENT SUBCLASS 419 / 31
.~.~ Heat treatment of powder

Current as of: June, 1999
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419 /   HD   POWDER METALLURGY PROCESSES

1  DF  POWDER METALLURGY PROCESSES WITH HEATING OR SINTERING {16}
30  DF  .~ Powder pretreatment (prior to consolidation or sintering) {6}
31.~.~ Heat treatment of powder

DEFINITION

Classification: 419/31

Heat treatment of powder:

Processes under subclass in which the powder is subjected to a temperature above the ambient temperature.

SEE OR SEARCH CLASS

148, Metal Treatment, particularly

513, for processes of treating loose metal particles (e.g., powder, etc.) to modify or maintain the internal physical structure (i.e., microstructure) or chemical properties of the metal and lacking a sintering or compacting operation.