Hydraulic oil combination special for loading machine

A hydraulic oil composition, loader technology, applied in the direction of lubricating composition, petroleum industry, etc., can solve environmental pollution and other problems, and achieve the effect of excellent oxidation resistance

Active Publication Date: 2018-11-13
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydraulic oil used is still mainly commercially available HM hydraulic oil products, which do not have an advantage in performance, and frequent oil changes cause environmental pollution

Method used

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  • Hydraulic oil combination special for loading machine
  • Hydraulic oil combination special for loading machine
  • Hydraulic oil combination special for loading machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add mineral oil HVI 400, ZDDP, fluorine-containing anti-oxidant and anti-wear agent, dioctyl diphenylamine type antioxidant, sodium sebacate anti-rust agent, dispersant according to the ratio in Table 1, and fully Mix and stir for 1 to 2 hours to complete the blending of the hydraulic oil compounding agent. Among them, the structure of the fluorine-containing anti-oxidant and anti-wear agent is:

[0039]

[0040] Table 1 Embodiment 1 hydraulic oil composite agent composition and proportioning ratio

[0041] name

quality%

ZDDP

45

Fluorine-containing antioxidant and anti-wear agent

5

Dioctyldiphenylamine antioxidant

10

Sodium sebacate rust inhibitor

1

Disuccinimide

10

Phosphated polyisobutylene polyoxyethylene ester

5

Mineral oil HVI 400

24

[0042] The physical and chemical values ​​of the hydraulic oil compounding agent in this embodiment are shown in Table 2.

[0043] The physico...

Embodiment 2

[0053] The specific blending substances and ratios of the hydraulic oil compounding agent are shown in Table 5, the content and ratio of the hydraulic oil composition are shown in Table 6, and the specific blending steps are the same as in Example 1. Among them, the structure of the fluorine-containing anti-oxidant and anti-wear agent is:

[0054]

[0055] Table 5 Embodiment 2 hydraulic oil composite agent composition and proportioning ratio

[0056] name

[0057] Table 6 Example 2 hydraulic oil substances and content

[0058] name

[0059] The physical and chemical values ​​of the hydraulic oil compounding agent and the performance data of the hydraulic oil composition are shown in Table 9 and Table 10.

Embodiment 3

[0061] The specific blending substances and ratios of the hydraulic oil compounding agent are shown in Table 7, the content and ratio of the hydraulic oil composition are shown in Table 8, and the specific blending steps are the same as in Example 1. Among them, the structure of the fluorine-containing anti-oxidant and anti-wear agent is:

[0062]

[0063] Table 7 Example 3 hydraulic oil composite agent composition and proportioning ratio

[0064] name

[0065] Table 8 Example 3 hydraulic oil substances and content

[0066] name

[0067] The physical and chemical values ​​of the hydraulic oil compounding agent and the performance data of the hydraulic oil composition are shown in Table 9 and Table 10.

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Abstract

The invention discloses a hydraulic oil combination special for a loading machine. The hydraulic oil combination special for the loading machine is composed of, by weight percentage, 1.1%-1.3% of hydraulic oil complexing agent, 0.6%-0.8% of pour point reducer, 0.01%-0.025% of anti-foaming agent, 0.01%-0.025% of demulsifier, and 97.85%-98.28% of base oil, wherein the hydraulic oil complexing agentis composed of, by weight percentage, 45%-50% of zinc dialkyl dithiophosphate, 0.5%-5% of fluorine-containing antioxidant antiwear agent, 10%-20% of dioctyl diphenylamine antioxygen, 1%-5% of sodium sebacate antirust agent, 2%-15% of dispersing agent, and 0-37% of mineral oil. The hydraulic oil combination special for the loading machine is high in antioxidant and antiwear performance, and being tested through a Denison T6H20C double-pump bench, achieves a service life longer than 3000 hours and is good in compatibility with gear oil.

Description

technical field [0001] The invention relates to a lubricating oil composition, especially a hydraulic oil composition suitable for loaders. Background technique [0002] The loader is the product with the largest sales volume of construction machinery in the world. In order to meet the national non-road construction machinery's implementation of the three-stage emission requirements from April 1, 2016, the loader product has been upgraded accordingly, and the plunger pump is used on the loader. While greatly improving the energy-saving effect, the working temperature of the hydraulic oil is increased from 75°C to an average of 90°C, and the pressure is also increased to more than 25MPa, which puts forward higher requirements for oil products. At the same time, in actual use, gear oil often enters the hydraulic oil. [0003] Patent CN104357182A discloses a hydraulic oil with excellent lubricating, anti-wear and anti-rust properties. The oil has a high viscosity index and goo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/08C10N30/10C10N30/06
CPCC10M169/044C10M2203/1006C10M2203/1025C10M2207/024C10M2207/127C10M2209/084C10M2215/064C10M2215/086C10M2217/044C10M2223/045C10M2225/04C10N2030/06C10N2030/10C10N2040/08C10N2020/02C10N2010/04
Inventor 刘中国李猛杨超苗新峰
Owner PETROCHINA CO LTD
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