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A high-speed EMU axlebox bearing grease composition and preparation method thereof

A grease composition and technology for high-speed EMU, applied in the field of grease, can solve the problems of high transportation cost, expensive imported grease and high use cost

Active Publication Date: 2021-08-20
清研高装科技(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lubricating performance of the above-mentioned lubricating grease composition on the axle box bearings of high-speed EMUs needs to be further improved, and the imported grease is expensive, and the transportation cost is high, resulting in high use cost, and at the same time, the operation and maintenance cost remains high

Method used

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  • A high-speed EMU axlebox bearing grease composition and preparation method thereof

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Embodiment 1-3

[0020] Embodiments 1-3 Configure each component according to the formula in Table 1.

[0021] Table 1 Embodiment 1-3 formula table

[0022] components Example 1 (%) Example 2 (%) Example 3 (%) 12-Hydroxystearic acid 5.5 6.3 6.1 stearic acid 2.2 1.9 2 Oleic acid 1 1 1 base oil 86.1 84.6 84.3 antioxidant 0.9 0.7 0.8 Chlorinated paraffin 0.6 0.8 0.7 Molybdenum Phosphate 1.2 1.5 1.1 Thiadiazole Derivatives 0.3 0.4 0.5 Molybdenum carbamate 0.7 0.8 1 Melamine cyanurate 1.4 1.8 2.2 modified graphene 0.1 0.2 0.3

[0023] The specific preparation method is to mix type III hydrogenated mineral oil, polyalphaolefin synthetic oil, and ester oil in a weight ratio of 3.5:5.5:1 as a base oil; to mix alkyl diphenylamine and BHT in a weight ratio of 1:1.5, As an antioxidant; add 12-hydroxystearic acid, stearic acid, and oleic acid to base oil with a weight ratio of 10-40%, heat and stir t...

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Abstract

The present invention creates and provides a high-speed EMU axle box bearing lubricating grease composition and a preparation method thereof. as base oil. Three-component fatty acid lithium soap is used as thickener, and antioxidant, rust inhibitor, extreme pressure and antiwear agent are added. The invention also relates to a preparation method of the high-speed EMU axle box bearing lubricating grease. The method is to heat and stir the compounds of different components according to a certain proportion and a certain order of addition, and homogenize and grind them to obtain the high-speed EMU. Group axle box bearing grease. The lubricating grease created by the invention has excellent lubricating ability and low temperature starting performance, can ensure that the bearing has a small temperature rise when running at a high speed, and has a large protective effect on the bearing.

Description

technical field [0001] The invention belongs to the field of lubricating grease, and in particular relates to a lubricating grease composition and a preparation method thereof for high-speed EMU axle box bearings with a speed of more than 200 km / h. Background technique [0002] The development of foreign high-speed railways was earlier, and the development of corresponding axle box bearings and their lubricating greases was also earlier. France and Japan mainly use SHELL2858, a new generation of lead-free extreme pressure lithium-based grease, which can meet the requirements of higher-speed trains. my country's high-speed EMU axlebox bearings above 200km / h all use imported bearing greases, mainly including SHELL2858, SHELLHV, FAG L218, FAG L55 and other bearing greases. The lubricating performance of the above-mentioned lubricating grease composition for the axle box bearings of high-speed EMUs needs to be further improved, and the imported grease is expensive, and the tran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/00C10M169/06C10N30/06C10N30/08C10N50/10C10N40/02
CPCC10M169/00C10M169/06C10M2201/041C10M2201/085C10M2203/1025C10M2205/0285C10M2207/1265C10M2207/1285C10M2207/2805C10M2211/08C10M2215/04C10M2215/064C10M2215/222C10M2219/106C10N2030/06C10N2030/08C10N2040/02C10N2050/10C10N2010/12
Inventor 夏位松尹维刘艺张清川
Owner 清研高装科技(天津)有限公司
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