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High-pressure anti-wear hydraulic oil

An anti-wear hydraulic oil and extreme pressure anti-wear agent technology, applied in the field of hydraulic oil, can solve problems such as difficulty in meeting oil properties, achieve good demulsibility, prevent wear and sintering, and have low hydrolysis acid value.

Inactive Publication Date: 2020-07-03
无锡中石油润滑脂有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional single ashless extreme pressure antiwear agent is difficult to meet the requirements of oil performance, so it is necessary to use multiple extreme pressure antiwear agents in combination

Method used

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  • High-pressure anti-wear hydraulic oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: 98% of 150SN base oil, 0.5% of sulfurized isobutylene, 0.5% of phosphorothioate complex ester amine salt, 0.1% of benzotriazole octadecyl ammonium salt, 0.1% of 2,6-di-tert-butyl p-cresol, Alkyl diphenylamine 0.1%, thiadiazole derivatives 0.5%, dodecenyl succinic acid 0.03%, perbasic calcium petroleum sulfonate 0.03%, simethicone 0.001%, condensation of amine and ethylene oxide matter 0.1%.

Embodiment 2

[0025] Example 2: 98.1% of 500SN base oil, 0.35% of sulfurized isobutylene, 0.5% of phosphorothioate double ester amine salt, 0.1% of benzotriazole octadecyl ammonium salt, 0.1% of 2,6-di-tert-butyl p-cresol, Alkyl diphenylamine 0.1%, thiadiazole derivatives 0.4%, barium dinonyl naphthalene sulfonate 0.06%, high base value sulfurized alkylphenate calcium 0.05%, acrylate and ether copolymer 0.001%, amine and ethylene oxide Condensate of alkanes 0.1%.

Embodiment 3

[0026] Example 3: 64% of 150SN base oil, 34% of 500SN base oil, 0.4% of sulfurized isobutylene, 0.6% of phosphorothioate complex ester amine salt, 0.1% of benzotriazole octadecyl ammonium salt, 2,6-di-tert-butylphenol 0.15%, dialkyl diphenylamine 0.15%, thiadiazole derivatives 0.5%, barium dinonyl naphthalene sulfonate 0.05%, high base value sulfurized alkylphenate calcium 0.03%, simethicone 0.0015%, amine and cyclic Condensate of oxyethane 0.1%.

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Abstract

The invention discloses high-pressure anti-wear hydraulic oil, and belongs to the hydraulic oil field. The hydraulic oil comprises the following components in percentage by mass: 95-99% of base oil, 1.0%-1.5% of an extreme pressure anti-wear agent, 0.1-0.3% of a friction modifier; 0.4-1.0% of an antioxidant, 0.1-0.5% of an antirust agent, 0.1-0.5% of a metal deactivator, 0.02-0.1% of a detergent dispersant, 0.001-0.005% of an anti-foaming agent, and 0.1-0.5% of a demulsifying agent. Compared with the prior art, the hydraulic oil has the advantages of good viscosity-temperature performance, extreme pressure abrasion resistance, oxidation resistance stability, hydrolysis stability and thermal stability, and is not prone to aging and deterioration; the service life is prolonged, a friction pair can be normally lubricated under high-pressure and high-speed harsh conditions, and abrasion is reduced. The foam generated under the condition of violent mechanical stirring in the operation process can be quickly eliminated; air mixed in the oil can be released in a short time, and a static pressure can be accurately, sensitively and stably transmitted.

Description

technical field [0001] The invention relates to the field of hydraulic oil, in particular to a high-pressure anti-wear hydraulic oil. Background technique [0002] With the increase of pressure, speed and compactness of hydraulic equipment, higher requirements are placed on hydraulic oil. Hydraulic oil is the hydraulic medium used in the hydraulic system that utilizes liquid pressure energy. It plays the role of energy transmission, system lubrication, anti-corrosion, rust prevention, cooling, etc. in the hydraulic system. [0003] At present, the commonly used anti-wear hydraulic oils are divided into two types according to the base oil, that is, HM, HR, HV of refined mineral base oil and HS of synthetic base oil; according to the type of additive, there are zinc-type formula containing ZDDP as the main agent and sulfur, Ashless formula with phosphorus and nitrogen as the main agent; according to the viscosity index, there are anti-wear hydraulic oil and high-viscosity ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/04C10N30/06C10N30/10C10N30/18C10N30/12C10N40/08
CPCC10M169/048C10M2207/026C10M2207/127C10M2209/084C10M2215/04C10M2215/064C10M2215/223C10M2217/06C10M2219/022C10M2219/046C10M2219/106C10M2223/047C10M2229/041C10M2209/103
Inventor 施江波杨晓钧张宇东李进宝牛燕江徐皓
Owner 无锡中石油润滑脂有限责任公司
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