Lubricating grease composition for heavy-loading roller press bearing and preparation method thereof

A grease composition, a technology of a loaded roller press, applied in the directions of lubricating compositions, petroleum industry, etc., can solve the problems of increasing production difficulty and cost, numerous raw materials, complicated processes, etc., and achieve excellent extreme pressure and wear resistance, product The effect of stable performance and simple preparation process

Active Publication Date: 2013-09-04
SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lithium-calcium-based grease takes into account the advantages of lithium-based grease and calcium-based grease, and has good extreme pressure and anti-wear properties, colloidal stability, high temperature resistance, water resistance and rust resistance. There are broad application prospects in various harsh working conditions such as water and high loads. Therefore, there are many researches on lithium-calcium-based greases at home and abroad, but the extreme pressure, anti-wear and load-bearing capabilities of most greases are still not enough. Meet the working condition requirements of roller press bearings
[0004] Chinese patent application CN101792689A discloses a high-performance lithium-calcium composite grease composition and its preparation method. The grease composition has the characteristics of good shear stability, high dropping point and outstanding oxidation resistance, but its four-ball test PD value is 620Kg, unable to withstand heavy load for a long time
[0005] Chinese patent application CN1364859A discloses a high extreme pressure mixed thickener grease composition and its preparation method, that is, adding polyurea thickener and complex calcium-based thickener to mineral oil prepared by mixing high and low viscosity , and then adding molybdenum disulfide and antimony trioxide as extreme pressure antiwear agent, a high extreme pressure grease composition with excellent high temperature and extreme pressure and antiwear properties can be prepared. The PD value of the four-ball test can reach more than 800Kg, but It needs two kinds of thickeners as the base grease, the process is complicated, and the raw materials are various, which increases the difficulty and cost of industrial production

Method used

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  • Lubricating grease composition for heavy-loading roller press bearing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Add 90 parts of lauryl hydroxystearic acid and 26.5 parts of sebacic acid to 640 parts of 150BS base oil (Jiangsu Yinglong Petrochemical Co., Ltd., the same below), stir, heat up to 80°C, and then add 12.2 parts of lithium hydroxide (Lithium hydroxide is diluted with deionized water in advance, the quality of deionized water is 13.42 parts, and the quality of deionized water is not included in the total mass of lithium-calcium complex grease) and 4 parts of calcium hydroxide (calcium hydroxide is used in advance Dilute with deionized water, the quality of deionized water is 4.4 parts, and the quality of deionized water is not included in the total mass of lithium-calcium complex grease), continue to stir and heat up to 110°C, dehydrate for 30 minutes, heat up to 210°C, add 227.3 parts 150BS base oil, cooled, homogenized and degassed to obtain complex lithium-calcium grease.

[0046] Add 100 parts of the above-mentioned lithium-calcium complex grease to the pre-cleaned n...

Embodiment 2

[0052] Add 100 parts of complex lithium-calcium-based grease (same as Example 1) into the pre-cleaned normal pressure reactor, heat up and stir, mix well, add 13 parts of ethylene-propylene polymer T612, 1.5 parts of potassium triborate neutral Oil dispersion Octopol PTB, 1.5 parts zinc diamyl dithiocarbamate Vanlube AZ, 2 parts vulcanized olefin cottonseed oil T405 (Jinzhou Kangtai Lubricating Oil Additive Co., Ltd.), 0.5 parts butyl / octyl diphenylamine Vanlube961, 13 parts Colloidal graphite 00#, mixed and stirred, then heated to 70°C, stirred at constant temperature for 2 hours, cooled out of the kettle, homogeneously ground and packaged to obtain bearing grease composition IV for heavy-duty roller presses.

[0053] Table 1 shows the performance test data of the above grease compositions I, II, III and IV.

[0054] Table 1 heavy-duty rolling machine bearing grease composition I, II, III and IV performance test data

[0055]

[0056] As can be seen from Table 1, grease c...

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Abstract

The invention provides a lubricating grease composition for a heavy-loading roller press bearing and a preparation method thereof. The composition has prominent extreme-pressure anti-wear property, lubricating property and water resistance. The lubricating grease composition contains the following ingredients: (a) complex lithium and calcium-based lubricating grease, (b) a tackifier, (c) an oiliness additive, (d) an extreme-pressure anti-wear agent, (e) an antioxidant and (f) a graphite additive.

Description

technical field [0001] The invention relates to a lubricating grease composition and a preparation method thereof, in particular to a lubricating grease composition suitable for heavy-duty roller press bearings and a preparation method thereof. The composition has outstanding extreme pressure and antiwear performance, excellent mechanical shear stability and lubricating performance. Background technique [0002] The main bearings of the two rollers of the roller press are the key parts of the roller press. Its extreme pressure bearing capacity and lubrication performance are directly related to the operating rate of the equipment and the service life of the bearings. Long life extreme pressure greases have become extremely important. [0003] Lithium-calcium-based grease takes into account the advantages of lithium-based grease and calcium-based grease, and has good extreme pressure and anti-wear properties, colloidal stability, high temperature resistance, water resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/06C10N40/02
Inventor 王瑞兴范海粉
Owner SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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