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Heavy-duty self-repairing open gear grease

A gear grease, self-healing technology, applied in the field of grease, can solve the problem that the grease does not have self-healing performance, and achieve the effect of good metal adhesion performance, small friction coefficient and preventing excessive wear

Active Publication Date: 2012-12-26
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this type of grease does not have self-healing properties

Method used

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  • Heavy-duty self-repairing open gear grease
  • Heavy-duty self-repairing open gear grease
  • Heavy-duty self-repairing open gear grease

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Open gear grease composition comprising:

[0018] Table 1 Example 1

[0019]

[0020] Experimental conditions: Mix and stir for not less than 60 minutes at a temperature of 80-110°C.

[0021] The specific measurement data are shown in Table 4

Embodiment 2

[0022] Example 2: An open gear lubricant composition comprising:

[0023] Table 2 Example 2

[0024]

[0025]

[0026] Experimental conditions: Mix and stir for not less than 60 minutes at a temperature of 80-110°C.

[0027] The specific measurement data are shown in Table 4

Embodiment 3

[0028] Example 3: An open gear lubricant composition comprising:

[0029] Table 3 Example 3

[0030]

[0031] Experimental conditions: Mix and stir for not less than 60 minutes at a temperature of 80-110°C.

[0032] The specific measurement data are shown in Table 4

[0033] The polyurea base grease component of above embodiment 1, embodiment 2, embodiment 3 is shown in table 4

[0034] Table 4 Polyurea Grease Components

[0035]

[0036] After testing, the performance indicators of the above three heavy-duty self-repairing open gear greases are shown in Table 4.

[0037] Table 4 Performance of heavy-duty self-repairing open gear grease

[0038]

[0039] Note: The self-repairing test method adopts SRV-IV fretting friction and wear testing machine (Optimol Grease Company of Germany), MicroXAM interferometric non-contact surface profiler (ADE Company of the United States), MH-5-VM microhardness tester, and surface roughness measurement The frequency of the fixed fr...

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Abstract

The invention discloses a clean-type heavy-duty open gear grease with self-repairing function. The product is composed of a lubricating grease base grease prepared from an organic compound thickening mineral oil containing carbamido in molecules or synthetic oil, and additives. A base grease thickener is composed of an MDI and organic amine in a molar ratio of 1:1-3; and the base oil is mineral oil or poly alpha olefin synthetic oil. The heavy-duty open gear grease comprises the following components, calculated by the weight of the base grease: 50-60wt% of base grease, 4-8wt% of a extreme pressure antiwear agent, 1-4wt% of an oily agent, 6-8wt% of a solid additive, 0.5-1.5wt% of an antirust agent, 25-35wt% of a tackifier, 2-4wt% of a self-repairing additive, and 0.3-1.0wt% of an antioxidant. The invention adopts borate as the extreme pressure antiwear agent added with an extreme pressure agent containing a small amount of sulfur phosphorus, so as to improve the extreme pressure anti-wear performance of the lubricating grease, as well as realize low toxicity, tastelessness and environment-friendliness of the grease. Besides, soft metal Cu nanoparticles employed by the invention endow good self-repairing performance on the grease. Compared with a traditional open gear lubricant product, the heavy-duty open gear grease provided by the invention has characteristics of excellent lubrication performance, self repairing, tastelessness and environment-friendliness, and can be widely used for lubricating of open gears.

Description

technical field [0001] The present invention relates to a lubricating grease, in particular to a lubricating grease used in a heavy-duty open gear transmission system. Background technique [0002] Open gear is the most common transmission mode in the raw material processing industry. It is widely used in large-scale equipment in cement, mining, power plant, steel, chemical, papermaking and other industries, such as: rotary kiln, tube mill, sintering kiln, rod mill, Coal mill, dryer, granulator, drum pulper, drying furnace, etc. Large open gear transmission usually plays the role of transmitting huge power. Its long-life and safe operation not only depends on the design of the gear and the materials used in the gear, but also depends more on correct assembly, efficient lubrication maintenance and high-quality lubricants . According to industry statistics: In addition to improper design, manufacture, installation, operation and maintenance, nearly 20% of gear damage is caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10N40/04C10N50/10C10N30/06
Inventor 张熊冯乐刚秦俪萍强永席刘丽君马丽张丽娟宋翃彬王晓波王俊明
Owner PETROCHINA CO LTD
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