| abstract |
When machining metals, lubricants are needed to ensure optimum metal slip between the processing tools at high processing temperatures. The object of the present invention is to provide a graphite-containing lubricant which, despite its undiminished lubricating effect, minimizes the coking effect in the tool, protects the tool and substantially increases tool life. The present invention relates to a high-temperature lubricant, in particular die lubricant, based on water-dispersed graphite or based on graphite in mineral oil, which contains 0.01 to 5 weight percent (wt .-%) of at least one oxidation catalyst, preferably a cerium compound, and a method of hot working metals using the high temperature lubricant of the present invention. |