Chemische Fabrik Budenheim Rudolf A. Oetker

Norbert Aurin

Thomas Roth

The invention relates to a lubricant which can be used as a mandrel lubricant with a content of 75 to 90 wt. % of graphite and contains 1 to 10 wt. % of a phosphate. Said lubricant can also contain 1 to 4 wt % alkali silicate, 1 to 10 wt. % bentonite, 0.5 to 1 wt. % silico-phosphate and common solid lubricants. Said lubricant is preferably used as an aqueous suspension with a solid content of 20 to 40 wt. %.

Lubricant and use thereof

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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Ockenheim, Germany

Norbert Aurin