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Open gear lubricant combination and preparation method thereof

A lubricating oil composition and open gear technology, applied in the field of lubricating oil, can solve the problems of unfavorable site cleaning and sanitation, limited operating temperature range, poor low-temperature fluidity, etc., and achieve excellent low-temperature fluidity, safe use, and high viscosity index. Effect

Active Publication Date: 2012-11-14
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But traditional open gear lubricant products contain solid lubricants that are black in appearance, and this black solid lubricant brings a lot of inconvenience in the maintenance of open gears, which is unfavorable to the cleaning and sanitation of the scene; secondly, the prior art The lubricating oil composition needs to add a viscosifier; again, in order to maximize the production efficiency of the open gear, it also puts forward new requirements for its low temperature operation, thus requiring the lubricating oil composition to have good low temperature flow properties
However, the low-temperature fluidity of traditional high-viscosity open gear lubricating oil compositions is poor, so the operating temperature range is greatly limited, which leads to challenges in the wide adaptability of traditional open gear lubricating oil compositions

Method used

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  • Open gear lubricant combination and preparation method thereof
  • Open gear lubricant combination and preparation method thereof
  • Open gear lubricant combination and preparation method thereof

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Effect test

preparation example Construction

[0027] In addition, the present invention also provides a preparation method of an open gear lubricating oil composition, which includes the following steps: adding a high-viscosity synthetic base oil with a weight ratio of (55-93): (5-25): (2-20) , synthetic ester base oil and additives are mixed, heated to 70-120° C., and cooled to obtain an open gear lubricating oil composition.

[0028] Wherein, the high-viscosity synthetic base oil is preferably one or more of olefin copolymerized base oil, polyester base oil and natural gas synthetic base oil. As a preference, the olefin copolymer base oil has a viscosity grade of 40~1000mm 2 / s polyalphaolefin, the viscosity grade is 40~2000mm 2 / s ethylene α-olefin copolymer base oil or viscosity grade 40~2000mm 2 / s polybutene base oil; the viscosity grade of the polyester base oil is 100~1000mm 2 / s; the viscosity grade of the natural gas synthetic base oil is preferably 26 ~ 30mm 2 / s. The synthetic ester base oil is preferably...

Embodiment 1

[0034] Ethylene α-olefin copolymer base oil 2000: 77.95g

[0035] Trimethylolpropane fatty acid ester: 15g

[0036] Extreme pressure antiwear agent sulfurized isobutylene: 3g

[0037] Extreme pressure antiwear agent ammonium thiophosphate: 1g

[0038] Extreme pressure antiwear agent Thiophosphoric acid nitrogen-containing derivative: 0.5g

[0039] Benzotriazole fatty acid ammonium salt: 0.3g

[0040] Sulfurized Olefin Cottonseed Oil: 1g

[0041] Benzotriazole derivatives: 0.05g

[0042] Rust inhibitor alkenyl succinic acid: 0.1g

[0043] Rust inhibitor calcium sulfonate: 0.1g

[0044] Phenolic antioxidant T501: 0.5g

[0045] Amine antioxidant T531: 0.5g

[0046] The production process is as follows: mix ethylene α-olefin copolymer base oil and trimethylolpropane fatty acid ester according to the above weight parts, heat up to 120°C to remove moisture, cool down to 60~80°C, add extreme pressure antiwear agent vulcanized isobutylene , extreme pressure antiwear agent amm...

Embodiment 2

[0051] Ethylene α-olefin copolymer base oil 1100: 75.35g

[0052] Pentaerythritol complex ester: 15g

[0053] Extreme pressure antiwear agent Sulfurized isobutylene: 4g

[0054] Extreme pressure antiwear agent tricresyl phosphate: 0.9g

[0055] Extreme pressure antiwear agent ammonium thiophosphate: 1g

[0056] Extreme pressure antiwear agent aminothioester: 1g

[0057] Benzotriazole fatty acid ammonium salt: 0.5g

[0058] Sulfurized Olefin Cottonseed Oil: 0.8g

[0059] Benzotriazole derivatives: 0.05g

[0060] Thiadiazole derivatives: 0.1g

[0061] Rust inhibitor alkenyl succinic acid: 0.15g

[0062] Rust inhibitor calcium sulfonate: 0.15g

[0063] Phenolic antioxidant T501: 0.5g

[0064] Amine antioxidant T531: 0.5g

[0065] Production technology is identical with embodiment 1.

[0066] The properties of the open gear lubricating oil composition prepared in this example were measured, and the results are shown in Table 2.

[0067] The performance result of the op...

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Abstract

The invention discloses an open gear lubricant combination which comprises high-viscosity synthetic base oil, synthetic ester base oil and an additive having a weight ratio of (55-93):(5-25):(2-20). Because the high-viscosity synthetic base oil has the characteristics of high viscosity index, better high-temperature and low-temperature performance and lower friction coefficient, and the synthetic ester base oil has the characteristics of low pour point and excellent solubility and perceptibility of the additive, the high-viscosity synthetic base oil and the synthetic ester base oil are matched in the invention, and a proper amount of additive is added, thus ensuring that the lubricant combination has the following characteristics: the lubricant combination has higher viscosity and excellent viscosity-temperature performance, and is beneficial to formation and maintenance of a lubricant film in the process of using oil products; under the condition of the same viscosity range, the open gear lubricant has excellent low-temperature flowing performance, thereby enlarging in use temperature range; and in use, the low-fluid friction of a gear pair in a load region can be caused, the operation temperatures of a gear and a gear transmission device are lowered, and the efficiency of the gear is increased.

Description

technical field [0001] The invention relates to the technical field of lubricating oil, in particular to an open gear lubricating oil composition and a preparation method thereof. Background technique [0002] The transmission form of the open gear transmission mechanism belongs to the involute gear transmission. Among them, the open gear is mainly used in the ball mill in the steel mill, the rotary kiln in the cement plant and the rotary ring gear of the large electric shovel in the mine. At the same time, it is widely used in the gear Rails, chains, cables, rollers, rails and slide rail grooves and other components. The main characteristics of open gear transmission are: heavy load, low speed, large structure size, high tooth surface roughness, and harsh working conditions. Due to the high torques that can be transmitted by open gears, they are often in a state of mixed friction during start-up, normal operation and shutdown, resulting in extremely high stress on the toot...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N20/02C10N20/00C10N30/12C10N30/06
Inventor 李姝金承华赵玉贞马宏陈士香曹毅罗玉兰
Owner CHINA PETROLEUM & CHEM CORP
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