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Turbine worm lubricating grease composition and preparation method thereof

A grease composition and a technology for a worm gear, applied in the field of grease, can solve problems such as poor lubrication and poor performance, and achieve outstanding water resistance, low oil separation rate, and small evaporation loss.

Inactive Publication Date: 2017-03-15
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problems of poor performance and poor lubrication of the above-mentioned worm grease, and propose a grease composition for worm and its preparation method. The grease has outstanding water resistance and oxidation resistance. Good, good mechanical stability, good extreme pressure resistance, high and low temperature performance and excellent anti-corrosion protection effect

Method used

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  • Turbine worm lubricating grease composition and preparation method thereof
  • Turbine worm lubricating grease composition and preparation method thereof
  • Turbine worm lubricating grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: each component comprises by the total weight of composition:

[0030] PAO 100: PAO 40 = 4:1 85%;

[0031] 12-Hydroxy:Sebacic acid=5:1 15%;

[0032] According to the total amount of the above two components, add the following additive mass percentages:

[0033]

[0034] Mix 125g of 12-hydroxystearic acid, 25g of sebacic acid and 510 base oil (the freezing point is -30°C, the viscosity at 100°C is 20mm 2 / s) Put it into the reaction kettle, heat until it is completely melted, then add 170g of base oil to lower the temperature in the kettle to 85-92°C, add 7.66g of lithium hydroxide monohydrate and 3.83g of calcium hydroxide for saponification After the saponification is completed, the temperature is raised to 100-110°C, and the remaining 15.32g of lithium hydroxide (1:5 water) solution is added dropwise. Cool down, add 170g of base oil when the temperature reaches about 180°C, add 10g of antioxidant when the temperature drops to 160-170°C, add 20g of e...

Embodiment 2

[0038] Embodiment 2: each component comprises by the total weight of composition:

[0039] PAO 100: PAO 40 = 4:1 86%;

[0040] 12-hydroxyl:sebacic acid=5:1 14%;

[0041] According to the total amount of the above two components, add the following additive mass percentages:

[0042]

[0043] Mix 117g 12-hydroxystearic acid, 23g sebacic acid and 520 base oil (the freezing point is -30°C, the viscosity at 100°C is 20mm 2 / s) into the reaction kettle, heated until completely melted, then added 170g of base oil to lower the temperature in the kettle to 85-92°C, added 7.15g of lithium hydroxide monohydrate and 3.57g of calcium hydroxide for saponification After the saponification is completed, the temperature is raised to 100-110°C, and the remaining 14.30g of lithium hydroxide (1:5 water) solution is added dropwise. Cool down, add 170g of base oil when the temperature reaches about 180°C, add 10g of antioxidant when the temperature drops to 160-170°C, add 20g of extreme press...

Embodiment 3

[0047]Embodiment 3: each component comprises by the total weight of composition:

[0048] PAO 100: PAO 40 = 4:1 87%;

[0049] 12-hydroxyl:sebacic acid=5:1 13%;

[0050] According to the total amount of the above two components, add the following additive mass percentages:

[0051]

[0052] Mix 108g of 12-hydroxystearic acid, 22g of sebacic acid and 520 base oil (the freezing point is -30°C, the viscosity at 100°C is 20mm 2 / s) into the reaction kettle, heated until completely melted, then added 180g of base oil to lower the temperature in the kettle to 85-92°C, and added 6.64g of lithium hydroxide monohydrate and 3.32g of calcium hydroxide for saponification After the saponification is completed, the temperature is raised to 100-110°C, and the remaining 13.27g of lithium hydroxide (1:5 water) solution is added dropwise. Cool down, add 170g of base oil when the temperature is around 180°C, add 10g of antioxidant when the temperature drops to 160-170°C, add 10g of extreme ...

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Abstract

The invention relates to a turbine worm lubricating grease composition and a preparation method. The turbine worm lubricating grease composition is prepared from 85-90% of base oil, 10-15% of thickener, 0.5-1% of antioxidant, 0.05-0.1% of antirust agent, 0.5-2% of extreme-pressure abrasion-resisting agent and 0.5-1% of tackifier. The thickener is generated through reaction of fatty acid and an alkaline water solution, wherein the fatty acid is a mixture of 12-hydroxy stearic acid and sebacic acid, and alkali is the mixture of lithium hydroxide and calcium hydroxide. The lubricating grease is of a unique mixed thickener type, so that the water-resistant and shearing properties of the lubricating grease are remarkable, and the usage requirement for the 30-70 DEG C wide temperature range of a turbine worm accessory itself can be well met. The colloid stability, water resistance and oxidation resistance of the lubricating grease are effectively improved, meanwhile the lubricating grease composition has the advantages of being low in oil separation rate, small in evaporation loss, high in shear stability, good in high and low temperature performance and corrosion protection effect and the like, and the usage temperature range of the lubricating grease is 30-150 DEG C.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to a worm gear lubricating grease composition and a preparation method. Background technique [0002] The common worm gear transmission is a steel worm gear meshed with a copper worm to transmit motion and power. The common worm gear transmission is a steel worm meshed with a copper worm wheel to transmit motion and power. In addition to the advantages of small size, large speed ratio, smooth operation, low noise and high load capacity, the main defect of this transmission form is that it is not easy to lubricate. The relative sliding velocity between the worm and the tooth surface of the worm gear is large, but the velocity component in a specific direction used to form the lubricating oil wedge is relatively small. As a result, the grease is not easy to enter the meshing area between the teeth, resulting in friction loss. Therefore, compared with other gear transmiss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M129/38C10N30/06C10N30/08C10N30/10C10N30/12C10N50/10C10N40/04C10N30/02C10N20/02
CPCC10M129/38C10M169/06C10M2205/022C10M2205/024C10M2207/023C10M2215/223C10M2219/068C10M2290/04C10N2020/02C10N2030/02C10N2030/06C10N2030/08C10N2030/10C10N2030/12C10N2040/04C10N2050/10C10N2010/12
Inventor 李聪石俊峰曾俊康军
Owner CHINA PETROLEUM & CHEM CORP
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