| 摘要 |
The present invention relates to a non-water-soluble cutting oil and, more particularly, to a non-water-soluble cutting oil which is comparable in performance to fresh oil by a polymerized synthetic lubricating additive and a sulfuric extreme pressure additive being added to regenerated recycled oil. The cutting oil of the present invention includes: 87 to 95 wt% of mineral oil-based regenerated recycled oil; 0 to 8 wt% of a polymerized synthetic lubricating additive formed of oleic acid, trimethylolpropane (TPM), and phosporic acid catalyst; 0 to 3 wt% of a sulfuric extreme pressure additive; 0 to 1 wt% of an antioxidant; and 0 to 1 wt% of a corrosion inhibitor, in which the raw materials are agitated for 30 to 120 minutes in a state where a reaction temperature of 45 to 80°C is maintained. The regenerated recycled oil satisfies a viscosity of 15 to 25 cst by hydraulic working fluid and non-water-soluble cutting oil refining. The polymerized synthetic lubricating additive has an oleic acid and TMP mixing weight ratio of 1:1. The sulfuric extreme pressure additive is fatty acid ester in which vegetable oleic acid and alcohol react to each other with 3 to 10 wt% of sulfur added. According to the present invention, the regenerated refined oil is used as base oil, and thus manufacturing costs can be reduced by at least 30% compared to the fresh oil. At the same time, the present invention has a lubricating performance comparable to that of the fresh oil. When a mixing ratio of the polymerized synthetic lubricating additive and sulfuric extreme pressure additive is appropriately regulated in the refined oil, the present invention can be utilized in press oil and metallic processing oil as well as cutting oil. |
