High-temperature extreme-pressure bentonite grease lubricant

A bentonite grease, extreme pressure technology, applied in the field of grease, can solve the problems of poor stability, easy thinning of bentonite grease, affecting use, etc., to achieve good high temperature performance and prolong service life.

Inactive Publication Date: 2012-08-08
SUZHOU HUIFENG LUBRICANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 3) The structural particles of bentonite grease are more resistant to shearing than soap fibers. However, since bentonite has been treated with surfactants, the mechanical stability of bentonite grease varies with the performance of different surfactants. Used in rolling bearings, bentonite grease tends to become thinner and flow out
[0007] 4) The corrosion resistance of bentonite grease to the metal surface is not good, and an effective antirust agent must be added to improve
[0008] 5) Bentonite grease is firmly combined with the base oil. On the one hand, it shows excellent colloidal stability. On the other hand, it shows that the base oil is dif...

Method used

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  • High-temperature extreme-pressure bentonite grease lubricant
  • High-temperature extreme-pressure bentonite grease lubricant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] First add 138Kg of base oil (viscosity of 20.2mm2 / s at 100°C) into the fat-making kettle, start stirring, then add 15Kg of tungsten disulfide, continue stirring and mixing evenly, then slowly add 12Kg of organic bentonite into the material system, and stir thoroughly Disperse the organic bentonite evenly in the oil, then add 36Kg active dispersant to the system, and stir rapidly for 0.5h, then discharge, grind, disperse and degas to obtain extreme pressure bentonite grease.

Embodiment 2

[0041] First add 136.5Kg of base oil (viscosity of 29.5mm2 / s at 100°C) into the fat-making kettle, start stirring, then add 14Kg of molybdenum disulfide, continue stirring and mixing evenly, then slowly add 13.5Kg of organic bentonite into the material system, Stir fully to disperse the organic bentonite evenly in the oil, then add 30Kg active dispersant to the system, and stir rapidly for 1.0h, then discharge, grind, disperse and degas to obtain extreme pressure bentonite grease.

Embodiment 3

[0043] First add 139.5Kg base oil (viscosity 34mm2 / s at 100°C) into the fat-making kettle, start stirring, then add 8Kg talc powder and 8Kg nano-calcium carbonate, continue to stir and mix evenly, and then slowly add 10.5Kg organic bentonite to the material In the system, stir fully to disperse the organic bentonite evenly in the oil, then add 25Kg of active dispersant to the system, and stir rapidly for 0.25h, then discharge, grind, disperse and degas to obtain extreme pressure bentonite grease.

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Abstract

The invention relates to a high-temperature extreme-pressure bentonite grease lubricant. The grease lubricant comprises the following components, by weight 80-95% of base oil, 5-15% of a thickener, 5-20% of an extreme pressure additive and 10-30% of an active dispersant, wherein the base oil is one of a mineral oil and a synthetic oil or a mixture of the two oils, and the extreme pressure additive is a solid lubricant. A preparation method of the grease lubricant comprises the following steps: fully stirring the base oil and the extreme pressure additive to uniformly mix them, adding the thickener, continuously fully stirring to uniformly mix, adding the active dispersant, stir-mixing for a certain amount of time, and grinding to uniformly disperse to obtain the grease lubricant. The grease lubricant of the invention has good high temperature performances, a good colloid stability, and a good mechanical stability, and is especially suitable for mechanical lubrication parts working under high-temperature heavy-load high-pollution conditions.

Description

technical field [0001] The invention relates to the technical field of lubricating grease, in particular to an extreme pressure bentonite lubricating grease. Background technique [0002] Grease is a grease-like semi-solid with a certain viscosity, which is mainly prepared from mineral oil (or synthetic lubricating oil) and a thickener. It can be divided into soap-based grease and non-soap based grease according to the thickener. There are two types of base grease. Bentonite grease belongs to non-soap base grease. It is made of organic bentonite thickened medium-viscosity or high-viscosity mineral oil after surfactant treatment. It is widely used in mining, metallurgy, casting and steel rolling, etc. Heavy-duty machinery and equipment in the industry, as well as heavy-duty vehicles, paper machinery, cement production equipment, high-temperature tunnel kiln cars, aircraft wheel bearings, railway diesel locomotives and other equipment lubrication parts. [0003] Bentonite gre...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10N30/06C10N30/04C10N40/02C10N50/10
Inventor 诸国建惠进德
Owner SUZHOU HUIFENG LUBRICANT
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