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High extreme pressure lithium base lubricating grease

A lithium-based lubricating grease and extreme pressure technology, applied in the field of lubricating grease, can solve the problems of grease extreme pressure performance degradation, easy lubrication accidents, wear and other problems, and achieve the effects of less loss, excellent water resistance and high extreme pressure performance

Active Publication Date: 2008-01-02
辽宁海华科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the lubricating grease used for bearings of steel rolling equipment is mainly based on extreme pressure lithium base grease. However, due to the limitation of the soap structure and additives of this type of grease, the grease is often lost or thinned by water washing during use, and the grease The extreme pressure performance drops significantly after entering water, which brings a lot of inconvenience to users, such as the viscosity of grease decreases due to water entering, and the bearing is easy to wear due to lack of sufficient grease, or due to the entry of a large amount of water. Rust, so prone to lubrication accidents
This affects normal production, and the economic losses caused by accident maintenance are staggering in rolling mills.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The high extreme pressure lithium-based grease is characterized in that the weight ratio of each component is as follows:

[0030] High viscosity mineral oil: 78 of which 150BS 34 400SN 44

[0031] Fatty acids: 7

[0032] Lithium hydroxide: 0.9

[0033] Calcium hydroxide: 0.3

[0034] Diphenylamine: 0.5

[0035] Phosphite compounds: 3

[0036] Benzotriazole fatty amine salt compounds: 2

[0037] Atactic polypropylene: 2

[0038] The production process of high extreme pressure lithium-based grease is as follows: add 1 / 2 of base oil and high-viscosity mineral oil according to the specified weight ratio, saponify fatty acid, lithium hydroxide and calcium hydroxide at 100°C, then add The remaining 1 / 2 of oil base oil high-viscosity mineral oil is heated up to 200°C for high-temperature refining, then cooled to 180°C, and then cooled to 110°C to add antioxidants, extreme pressure agents, oily agents, and tackifiers, and then Use a homogenizer or circular shear for pos...

Embodiment 2

[0040] The high extreme pressure lithium-based grease is characterized in that the weight ratio of each component is as follows:

[0041] High viscosity mineral oil: 79.5 of which 150BS 30 400SN 49.5

[0042] Fatty acids: 8.5

[0043] Lithium hydroxide: 1

[0044] Calcium hydroxide: 0.4

[0045] Diphenylamine: 1

[0046] Phosphite compounds: 5

[0047] Benzotriazole fatty amine salt compounds: 4

[0048] Atactic polypropylene: 4

[0049] The production process of the high extreme pressure lithium-based grease is the same as in Example 1.

Embodiment 3

[0051] The high extreme pressure lithium-based grease is characterized in that the weight ratio of each component is as follows:

[0052] High viscosity mineral oil: 81 of which 150BS 41 400SN 40

[0053] Fatty acids: 10

[0054] Lithium hydroxide: 1.5

[0055] Calcium hydroxide: 0.5

[0056] Diphenylamine: 1.5

[0057] Phosphite compounds: 6

[0058] Benzotriazole fatty amine salt compounds: 5

[0059] Atactic polypropylene: 5

[0060] The production process of the high extreme pressure lithium-based grease is the same as in Example 1.

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PUM

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Abstract

A high-extreme-pressure Li-base lubricating grease with high water-proofing performance is prepared through proportionally mixing part of high-viscosity mineral oil with fatty acid and lithium (or calcium) hydroxide, saponifying reaction, adding rest of said mineral oil, heating to 200 deg.C, high-temp refining, cooling, adding antioxidizing agent, extreme-pressure agent, oily agent and viscosity increaser, homogenizing and filter.

Description

technical field [0001] The invention relates to a lubricating grease made of high-viscosity mineral oil as base oil, fatty acid lithium and calcium soap as thickener, and compound additives, high extreme pressure lithium-based lubricating grease. Background technique [0002] With the development of the metallurgical industry, the working conditions of the equipment in the rolling mill are becoming more and more harsh, especially the bearings of the equipment in the hot-rolled strip mill are mostly operated in the environment of high temperature, high speed, heavy load, water and dust, which is harmful to The performance of lubricating grease used in rolling equipment bearings puts forward higher requirements. [0003] At present, the lubricating grease used for bearings of steel rolling equipment is mainly based on extreme pressure lithium base grease. However, due to the limitation of the soap structure and additives of this type of grease, the grease is often lost or thin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M137/04C10M101/00
Inventor 刘德明刘鹏
Owner 辽宁海华科技股份有限公司
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