Synthetic high-temperature lubricating grease and preparation method thereof

Abstract

The invention relates to synthetic high-temperature lubricating grease and a preparation method thereof, in particular to lubricating grease generated by taking high-base number compound calcium sulfonate as a thickening agent and high-viscosity synthetic oil as base oil. The synthetic high-temperature lubricating grease comprises the following components in percentage by mass: 30%-80% of the synthetic base oil, 15%-30% of high-base number compound calcium sulfonate, 2%-10% of 12-hydroxyl stearic acid, 1%-5% of boric acid, 1%-4% of acetic acid, 0.5%-2% of water, 1%-3% of calcium hydroxide and0.1%-0.5% of antioxidants. The produced high-temperature lubricating grease has the advantages of excellent high temperature and water spraying resistance, very well extreme pressure abrasion resistance, cutting safety, rust protection, and the like and is very suitable for the production parts of steel mills, cement plants, power plants, and the like, which have high temperature, heavy loads andlarge quantities of cooling water.

Description

technical field [0001] The invention relates to a synthetic high-temperature lubricating grease and a preparation method thereof, which are suitable for use in steel plants, cement plants, power plants, and other production sites where high temperatures, heavy loads, and a large amount of cooling water are poured. Background technique [0002] There are many high-temperature parts in steel plants, cement plants, and power plants, such as furnace mud guns and cast iron machines in iron-making workshops in iron and steel plants, roll bearings in steel rolling workshops, and coke quenching car bearings in coking plants. The ambient temperature of these devices is as high as 800-1200°C. In order to reduce the temperature of these devices, a large amount of cooling water is usually showered continuously to cool down, resulting in high temperature of the lubricating parts of these devices, heavy loads, and severe water showers. Therefore, the lubricating parts of these equipments ...

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Problems solved by technology

However, these greases have the following problems: the use temperature is low, generally not exceeding 150°C, these greases will quickly become thinner at high temperatures, and even cause the structure of the grease to be damaged; the extreme pressure and wear resistance are not good, and the bearing capacity is poor; especially These lubricating greases have poor water resistance and are prone to emulsification when exposed to water. The structure of the grease is significantly damaged under the shearing action of the bearing, resulting in serious loss of lubricating grease and greatly increasing the amount of lubricating grease.

These shortcomings of several existing high-temperature lubricating greases have caused the following adverse effects on the lubricating parts of the equipment: due to the high temperature and the presence of water, the lubricating grease will quickly lose and become thinner, making the lubrication status of the equipment unstable, and it is easy to cause the equipment to be lubricated without oil Or the lack of oil lubrication will lead to increased wear of the equipment, and in severe cases, it will also cause damage to the equipment and production stoppage; and a large amount of grease loss also makes the equipment need to be greased frequently, and the labor intensity of the workers is greatly increased; finally with the grease The continuous loss of lubricating grease needs to be replenished constantly, resulting in a very large consumption of lubricating grease

[0004] It can be seen from the above that the current existing lubricating grease cannot meet the lubrication conditions of equipment under high temperature, heavy load, and a large amount of water.

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