Metalworking with a lubricant composition comprising mineral oil and alkoxyalkyl ester

摘要

A metalworking method that includes a step of applying to a metal object a lubricant composition comprising a major proportion of mineral oil and a minor proportion of an alkoxyalkyl ester having the general formula R2COO(CH2CH2O)nR1 wherein n=1 or 2, R1 is a C1 to C8 alkyl group and R2 is a C7 to C19 alkyl or alkenyl group. A particularly preferred composition comprises about 30 wt % butoxyethyl stearate dissolved in about 70 wt % mineral oil. A metalworking lubricant emulsion is formed by emulsifying about 2-10 wt % of the composition in about 90-98 wt % water. A particularly preferred emulsion comprises about 5 wt % of the composition emulsified in about 95 wt % water. The method is particularly suitable for hot rolling and cold rolling aluminum and aluminum alloys.