High-detergency hydraulic oil composition

A technology of hydraulic oil composition and detergency, applied in lubricating compositions, petroleum industry, etc., can solve the problems of rising operating temperature, poor heat transfer effect, affecting valve response speed, etc., and achieve the effect of keeping clean

Active Publication Date: 2013-05-08
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sticky valve in the hydraulic system will affect the response speed of the valve and reduce the flow rate of oil
Varnish and sludge also lead to poor heat transfer, higher operating temperatures (sludge, varnish act like insulators) and, moreover, shorten the life of components such as valves, filters, pumps
[0003] Traditional hydraulic oils te

Method used

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  • High-detergency hydraulic oil composition
  • High-detergency hydraulic oil composition
  • High-detergency hydraulic oil composition

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] The components of the hydraulic oil composition of this embodiment are: 55 kg of type I oil, 45 kg of type II oil, 1 kg of PMA viscous agent, 1.4 kg of LZ6776, 0.01 kg of pour point depressant, and 0.050 g of antifoaming agent.

[0033] Among them, Type I oil uses 150SN; Type II oil uses II4 base oil produced by Shanghai Gaoqiao; PMA type viscosity index improver uses LZ7720C; Pour point depressant is LZ7749B; Produced by Borun Company.

[0034] The preparation process is as follows: mixing the components according to the above-mentioned ratio, heating, keeping the temperature at 45 DEG C, stirring at the same time, and controlling the stirring time at 2 hours.

Example Embodiment

[0035] Example 2

[0036] The components of the hydraulic oil composition of this embodiment are: 100 kg of type II oil, 1 kg of PMA viscous agent, 1.2 kg of LZ6776, and 0.050 g of antifoaming agent.

[0037] Among them, the II type oil uses the II6 base oil produced by Shanghai Gaoqiao; the PMA type viscosity index improver is Viscoplex 8-200; the pour point depressant is Empicryl PPT148; the antifoaming agent is 1# composite antifoaming agent.

[0038] The preparation process is as follows: mixing the components according to the above-mentioned ratio, heating, keeping the temperature at 50 DEG C, stirring at the same time, and controlling the stirring time at 1.5 hours.

Example Embodiment

[0039] Example 3

[0040] The components of the hydraulic oil composition of this embodiment are: 55 kg of type I oil, 45 kg of type II oil, 0.5 kg of PMA viscous agent, 1.0 kg of LZ6776, 0.01 kg of pour point depressant, and 0.050 g of antifoaming agent.

[0041] Among them, type I oil uses 500SN, type II oil uses II6 base oil produced by Shanghai Gaoqiao; PMA type viscosity index improver is Viscoplex 8-310; pour point depressant is Viscoplex 1-156; anti-foaming agent is T921 composite anti-foam Foaming agent.

[0042] The preparation process is as follows: mixing the components according to the above-mentioned ratio, heating, keeping the temperature at 50 DEG C, stirring at the same time, and controlling the stirring time at 1.5 hours.

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Abstract

The invention provides a high-detergency hydraulic oil composition. The composition comprises the following components by weight percent: base oil: 0-55 % of I-class oil and 45-100 % of II-class oil; and additives: 0.1-3 % of a PMA-type viscosity index improver, 1.0-1.6 % of an extreme pressure, clean, anti-wear complex agent, 0-0.01 % of a coagulation reducing agent, and 0-55 ppm of anti-bubble, wherein the amount of the additives is based on the amount of the base oil. The hydraulic oil composition has characteristics of wear resistance, anticorrosion, anti-oxidation and demulsification existing in traditional hydraulic oil, and further has detergency, and can reduce generation of paint film and greasy filth and maintain cleaning of the hydraulic system.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a high-cleaning hydraulic oil composition. Background technique [0002] The development trend of the hydraulic system is that the pressure is getting higher and higher, the fuel tank is getting smaller and smaller, and the power density of the oil is getting higher and higher. Such changes in the hydraulic system bring about an increase in the operating temperature, which in turn leads to oxidation of the hydraulic oil. and thermal degradation to produce products such as sludge or paint film. Over time, the resulting varnish or sludge leads to poor lubricity, increased friction within the valve, and can cause sticking, especially in tight tolerance hydraulic components such as servo valves and proportional valves. The sticky valve in the hydraulic system will affect the response speed of the valve and reduce the flow rate of oil. Varnish and sludge also lead to poor heat transf...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/08C10N30/04
Inventor 陈惠卿汤涛李万英王向阳刘继勇韦安柱贾睿薛玉苓艾立雯水琳
Owner CHINA PETROLEUM & CHEM CORP
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