LUBRICATING OIL COMPOSITION FOR METAL WORKING

摘要

A lubricating oil composition for metal working, including a base oil composed of one or more selected from mineral oils and synthetic oils and having a kinematic viscosity at 40° C. of 50 to 300 mm2/s, and 0.01 to 10% by mass, based on the total amount of the composition, of a glycerin derivative (A) represented by general formula (I);;[wherein R1 represents an alkyl group, alkenyl group or arylalkyl group, R2 and R3 each independently represent a hydrogen atom or a methyl group, A1O and A2O each independently represent an oxyalkylene group, n is 0, 1 or 2, p and q each represent the average number of added moles, and p+q is a value of 0 to 5] is used to provide a lubricating oil composition for metal working which can improve metal workability and suppress the generation of metal abrasion powder and surface damage when used in working of a metal or an alloy thereof, in particular, in deep drawing of a non-ferrous metal such as aluminum or an aluminum alloy and therefore enables the production of a product with high surface quality.

主权项

1. A lubricating oil composition for metal working, comprising at least one base oil selected from a mineral oil and a synthetic oil, said base oil having a kinematic viscosity at 40° C. of from 50 to 300 mm2/s, and from 0.01 to 10% by mass, based on the total amount of the composition, of a glycerin derivative (A) represented by general formula (I): wherein R1 represents an alkyl group, alkenyl group or arylalkyl group, R2 and R3 each independently represent a hydrogen atom or a methyl group, A1O and A2O each independently represent an oxyalkylene group, n is 0, 1 or 2, p and q each represent the average number of added moles, and p+q is a value of from 0 to 5.