A kind of lubricating grease specially used for continuous casting machine in metallurgical industry and preparation method thereof

Abstract

The invention discloses a lubricating grease specially used in a metallurgical industry continuous casting machine, and a preparation method thereof. The lubricating grease comprises the raw materials of, by weight: 30-50 parts of common oil A, 10-20 parts of common oil B, 30-50 parts of calcium petroleum sulfonate, 0.3-0.8 parts of ethanol, 1-1.5 parts of petroleum ether, 0.5-1 part of acetic acid, 2.5-3 parts of fatty acid, 0.5-1 part of boric acid, 1-2 parts of water, 2.5-3 parts of calcium hydroxide, 0.5-1 part of calcium carbonate, 1-2 parts of an antioxidant, 0.5-1 part of an antirust agent, and 0.6-1.5 parts of an extreme-pressure agent. The preparation method comprises the steps that: parts of the raw materials are sequentially added according to the ratio of a formula, such that a saponification reaction is carried out; parts of the raw materials are supplemented, and refining is carried out; the material is delivered into a kettle; rest of the raw materials are added, and process treatment is carried out. The lubricating grease provided by the invention has excellent high-temperature and low-temperature performances, good mechanical stability, good oxidation stability, good water resistance and pumpability, outstanding extreme-pressure wear resistance, and outstanding anti-corrosion and antirust performances. The preparation method is simple and easy to operate. Product application effect is good.

Description

technical field [0001] The invention relates to the field of lubricating grease, in particular to a lubricating grease specially used for continuous casting machines in the metallurgical industry and a preparation method thereof. Background technique [0002] The continuous casting equipment is a double-strand arc-shaped slab continuous casting machine, which is equipped with a grease centralized lubrication system. The lubrication parts include crystallizer vibration and quick table change parts, sector bearings and billet roller tables. The function of continuous casting equipment is mainly to cool the molten steel to form a solid billet. The entire process equipment is in a harsh environment, and its production conditions are characterized by high temperature, dust, water spray, low speed and heavy load, and oxide scales entering. Practice has proved that only high-quality grease can well meet these lubrication conditions. For example, the external temperature of the bea...

AI Technical Summary

Problems solved by technology

The continuous casting of shaped billets is carried out under the condition of low speed and heavy load, which has certain requirements on the extreme pressure performance of grease, but general extreme pressure additives decompose into gases of S, N, P and other elements at high temperature, and lose their original properties. Some extreme pressure performance, not only pollute the environment, but also cause equipment corrosion

Inorganic additives, such as fillers such as borate and light calcium, have good high-temperature performance, but have their fatal disadvantages: high ash content, high-temperature decomposition, and pipeline blockage

Grease is often damaged by continuous casting machine bearings due to high temperature loss, hardening and water loss

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