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Gear oil composition and applications thereof

A technology of composition and gear oil, applied in lubricating composition, petroleum industry, etc., can solve problems such as unsatisfactory extreme pressure performance, gear wear, low rotating oxygen bomb value, etc.

Active Publication Date: 2014-04-23
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is that the extreme pressure performance of the industrial gear oil in the prior art cannot meet the requirements of some metallurgical industries, resulting in abnormal wear of the gears; at the same time, the oil has poor oxidation stability (rotating oxygen elastic value is relatively low) low) problems, providing a new high-duty industrial gear lubricant composition

Method used

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  • Gear oil composition and applications thereof
  • Gear oil composition and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0024]According to the parts by weight in Table 1, the required amount of antioxidant, metal deactivator, oily agent, rust inhibitor, anti-emulsifier, antifoaming agent, viscosity index improver and pour point depressant were weighed and added to Base oil (220 viscosity grade), heated and stirred at 70°C until completely uniform, then lowered the temperature to 60°C, added extreme pressure anti-wear agent, stirred until completely uniform to obtain the high-load industrial gear oil composition. The type and amount of each component in the composition are specifically shown in Table 1.

[0025] Among them, T321 is sulfurized isobutylene; T307 is phosphorothioate complex ester amine salt; T406 is benzotriazole octadecylamine salt; T501 is 2,6-di-tert-butyl p-cresol; T512 is 3,5-di-tert-butyl -4-Hydroxyphenyl acrylate; T531 is N-phenyl-α-naphthylamine; T534 is alkylated diphenylamine; T552 is benzotriazole, aldehyde and amine condensate; T561 is 2,5-dimercapto- 1,3,4-thiadiazole...

Embodiment 7

[0027] The extreme pressure and anti-wear performance (Timken OK load value, comprehensive wear index (ZMZ), sintering load, wear scar diameter), oxidation stability (rotating oxygen elastic value), anti-wear properties of the compositions in [Examples 1-6] Emulsification, corrosion resistance (copper sheet corrosion), and rust resistance (liquid phase corrosion B method) were tested, and the test results are shown in Table 2.

Embodiment 5

[0028] Extreme pressure and antiwear properties are one of the most important properties of gear oils. For the compositions in [Examples 1-6], the Timken OK load value, comprehensive wear index (ZMZ), sintering load, wear spot diameter and other indicators were tested. Among them, because the Timken OK load value test is expensive, three indicators such as the comprehensive wear index (ZMZ), sintering load, and wear scar diameter are generally tested in the test. The greater the Timken OK load value, comprehensive wear index (ZMZ), sintering load, etc., the better the extreme pressure performance of the gear oil; the smaller the wear scar diameter, the better the extreme pressure performance of the oil. In the extreme pressure and anti-wear performance of each composition in [Examples 1-6], the comprehensive wear index is greater than 441N, the sintering load is greater than 4900N, and the diameter of the wear scar is not greater than 0.35mm, and each of [Examples 3-6] The Ti...

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Abstract

The invention relates to a gear oil composition and applications thereof, mainly solving problems of abnormal gear wear and poor oxidation stability of an oil product which are caused by that the extreme pressure property of industrial gear oil in the prior art fails to satisfy a part of using requirements of the metallurgy industry. According to the technical scheme adopted by the gear oil composition, the gear oil composition comprises following components by weight: a) 100 parts of mineral base oil; b) 0.1-10.0 parts of an anti-wear reagent at extreme pressure; c) 0.01-2.0 parts of an antioxidant; d) 0.01-0.5 part of a metal deactivator and e) 0.01-1.5 parts of an oiliness agent, wherein the anti-wear reagent at extreme pressure is a mixture of sulfurized isobutylene and at least one selected from sulfurized olefin, phenyl sulfide, sulfurized aliphatic ester or amine thiophosphate diester; and the antioxidant is at least one selected from 2,6-di(tertbutyl)-p-cresol, 3.5-di(tertbutyl)-4-hydroxy phenyl acrylate, pentaerythrite tetra[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate], N-phenyl-1-naphthylamine or alkylated diphenylamine. By the technical scheme, the problems are solved well and the gear oil composition can be used for industrial production.

Description

technical field [0001] The present invention relates to a gear oil composition and its application. Background technique [0002] Gear oil is used in various gear transmissions to prevent tooth surface wear, abrasion, sintering, etc., prolong its service life, improve transmission power efficiency, and reduce power loss. Because the gear load is generally above 490MPa, and the hyperbolic tooth surface load is as high as 2942MPa. In order to prevent tooth surface wear and abrasion caused by oil film rupture, extreme pressure antiwear agents are often added to gear oils, and sulfur-phosphorus or sulfur-phosphorus-nitrogen additives are generally used. In addition to good anti-wear, load resistance and suitable viscosity, gear oil should also have good thermal oxidation stability, anti-foaming performance, water separation performance and anti-rust performance. [0003] The gear equipment used in the iron and steel metallurgy industry generally has high workload, long-term ov...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/04C10N30/06C10N30/10C10N30/12
Inventor 何晓瑛俞巧珍周霞晏金灿益梅蓉涂劲松孔吉霞
Owner CHINA PETROLEUM & CHEM CORP
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