| 摘要 |
PURPOSE: To obtain a metal working oil composition which can prolong the tool life, can prevent the corrosion of machine tool parts and the copper or copper alloy members of a work and improves the productivity in metal working. CONSTITUTION: This composition is obtained by blending a base oil comprising a mineral oil and/or a synthetic oil with an inert sulfur compound, an overbased metal sulfonate, and at least one compound selected from primary alkyl and secondary alkyl zinc dithiophosphates. |
