Lubricating oil for metal working

摘要

A lubricating oil for metal working comprises a base oil and a diester of a branched aliphatic dicarboxylic acid having from 12 to 28 carbon atoms and a straight chain aliphatic alcohol having from 1 to 6 carbon atoms. The lubricating oil is excellent in rolling properties and causes no heat scratching, and permits the production of rolled plates having good gloss. These properties are further improved by adding a monoester compound having from 13 to 48 carbon atoms to the above oil.