Method of lubricating a die cavity and method of making metal-based components using an external lubricant
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United States of America Patent
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May 28, 2002
Grant Date -
Feb 28, 2002
app pub date -
May 24, 2001
filing date -
May 31, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is provided for lubricating a die cavity that includes applying a lubricant composition containing a high melting point polymeric wax lubricant to the wall of a die cavity. Preferably, the lubricant is a polyamide lubricant that has a melting temperature greater than the temperature of the die wall during use. The present invention also provides a method of making a compacted metal part that includes applying the lubricant composition to an internal wall of a die cavity, introducing a metal-based powder composition into the die cavity; and compacting the powder composition at a pressure sufficient to form a compacted part from the metal powder composition.
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