Improvement of properties of oils used in hydraulic systems of road-construction equipment

Abstract This article proposes ways to improve the operational properties of hydraulic oils used in road construction equipment. Hydraulic oils with additives in the form of metal dithiophosphates or orthophosphoric esters can provide reduced wear of hydraulic elements. We research samples of industrial oils MG – 30, and samples with the addition of zinc dithiophosphate additives DC – 40. The antiwear effect of such compounds occurs due to the adsorption of the metal surface with the formation of sufficiently strong compounds with the metal. In the presence of oxygen, the reactivity of sulfur compounds with respect to the metal decreases, but an increase in the antiwear properties of the compounds is observed mainly under moderate friction conditions. The results of laboratory studies of MG-30 hydraulic oils with an additive based on zinc dithiophosphate DC – 7 and recommendations for their use are presented.

Перевод пока недоступен