Hydraulic oil for construction machinery

Abstract

The invention discloses an oil-pressure operating oil for engineering machineries. Castor-base dioctyl sebacate and alkyl naphthalene are compounded to serve as base oil. The oil-pressure operating oil is composed of the following components in mass ratio: 88-92% of the base oil, 1.0-3.0% of antioxygen taken as an additive, 3.0-6.0% of extreme-pressure and abrasion resistance agent, 0.2-0.5% of anti-rusting agent, 0.002-0.005% of anti-foaming agent, 0.8-1.2% of anti-emulsifying agent and 1.0-2.0% of oiliness agent. The oil-pressure operating oil composite for the engineering machineries has good combination property, anti-corrosion performance, hydrolytic stability, oxidation stability, anti-emulsifying property, foam resistance, corrosion inhibition performance, water separation performance, abrasion resistance and bearing capacity, guarantees the oil film thicknesses of a steering system and a braking system, decreases the dynamic and static friction coefficients of metallic surfaces, improves the working efficiency and prolongs the services lives of the steering system and braking system of engineering machines.

Description

technical field [0001] The invention belongs to the oil pressure operating oil for engineering machinery which can ensure sufficient oil film thickness of the steering and braking system under severe conditions, reduce the friction coefficient of the metal surface, improve work efficiency and prolong the service life of the steering and braking system. Background technique [0002] With the development of construction machinery manufacturing technology, construction machinery has been widely used in various fields; hydraulic transmission is a transmission device commonly used in construction machinery equipment, which uses liquid as the transmission medium and uses the pressure or kinetic energy of the liquid to transmit energy system. Hydraulic transmission has the characteristics of small size, light weight, high power, fast response, high precision, large speed range, smooth movement, and convenient operation; the hydraulic system is basically composed of four parts: powe...

AI Technical Summary

Problems solved by technology

However, the wet steering clutch has the disadvantages of small friction coefficient and greater pressing force; in addition, the steering and braking system generally adopts the form of wet steering clutch and humidified steering brake, and the main function of lubricating oil in this system is to smooth Gentle transmission of power requires lubricating oil to have a higher coefficient of static friction

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