| 摘要 |
PURPOSE:To obtain metal-processing oil used for metal processing such as machining, grinding, drawing and wire drawing having excellent machinability, resistance to putrefaction and resistance to deterioration without odor containing specific amounts of a specific dicarboxylic acid (salt) and a sulfur-based extremepressure agent. CONSTITUTION:The aimed processing oil contains 1-40wt.%, preferably 3-35wt.% dicarboxylic acid expressed by the formula (R1 is COOH or H; R2 is H for R1 is COOH or R2 is COOH for R1 is H), amine salt of said acid or alkali metallic salt of said acid and 1-30wt.%, preferably 5-20wt.% sulfur-based extreme-pressure agent (preferably tertiary dodecyl polysulfide or di-tertiary nonyl polysulfide, etc.). |
