Releasing lubricant for use in forging and extrusion processes
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United States of America Patent
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Jul 30, 1985
Grant Date -
N/A
app pub date -
Oct 4, 1983
filing date -
Oct 6, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a releasing lubricant for use in forging and extrusion processes. In one embodiment, the lubricant comprises a mixture of: (a) at least one compound selected from the group consisting of phosphoric acid and its salts, (b) at least one compound selected from the group consisting of boric acid and its salts, (c) at least one compound selected from the group consisting of alkali metal carbonates, nitrates, sulfates and hydroxides, and (d) a phyllosilicate, wherein the amounts of the compounds (a) to (c) (as oxides) are: 14 to 55 molar % of P.sub.2 O.sub.5, 0 to 80 molar % of B.sub.2 O.sub.3 and 30 to 80 molar % of M.sub.2 O (M being an alkali metal) and the total amount of these compounds is 91 to 99.5 wt. % or 0.5 to 39 wt. % based on the solid. In another embodiment, the amounts of the compounds (a) to (c) (as oxides) are: 14 to 39.5 molar % of P.sub.2 O.sub.5, 0 to 80 molar % of B.sub.2 O.sub.3 and 30 to 80 molar % of M.sub.2 O (M being an alkali metal) and the total amount of these compounds is more than 39 wt. % but less than 91 wt. % based on the solid.
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