Graphite-free mandrel bar lubricant
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United States of America Patent
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Apr 20, 1999
Grant Date -
N/A
app pub date -
Sep 16, 1997
filing date -
Sep 17, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention concerns a lubricant for the hot forming of metals with at least one alkali metal phosphate and possibly additionally at least one phosphate of a divalent metal, which has improved lubricating properties in comparison with known high-temperature lubricants and which at the same time does not attack the workpiece and tool or attacks same to a lesser degree than known lubricants as it contains at least one additives which forms a gas upon being heated.
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