LUBRICATING OIL FOR FILM LUBRICATION BEARINGS OF ROLLING MILLS

摘要

FIELD: lubricating agents. SUBSTANCE: the oil comprises (wt %): 0.5-1 4-methyl-2,6-ditert. butylphenol; 0.01-0.03 a nitrogen-containing block copolymer of ethylene and propylene oxides; 0.003-0.005 a polymethylsiloxane liquid; 1.5-2.5 polyisobutylene (mol. weight 9000-15000); 0.05-0.2 octadecylamine; 0.01- 0.05 N-(diethylaminomethyl) benztriazole; and up to 100 petroleum oil. As compared with the prior art oil, the claimed oil is superior in the anticorrosive properties (for steel the degree of corrosion in an aqueous Na₂CO₃ solution for 24 hr is 18-20 % as against 64 %) and in the anti oxidative properties (a variation in viscosity at 100 grad C for 75 hr is 0.3-0.5 % as against 1.5 % and a variation in the acid number is 0.03 mg/KOH/g as against 0.05 mg KOH/g). EFFECT: improved quality of the lubricating oil. 3 tbl