High extreme pressure lithium-based lubricating grease

Abstract

The invention relates to high extreme pressure lithium-based lubricating grease. The production process comprises the following steps: adding 1 / 2 of base oil high-viscosity mineral oil, fatty acid, lithium hydroxide and calcium hydroxide according to the stipulated mixture ratio in parts by weight, performing saponification reaction at the temperature of 100 DEG C, then adding the heated oil, namely the remaining 1 / 2 of the base oil high-viscosity mineral oil, heating to 200 DEG C to the greatest extent to perform high-temperature refining, then cooling to 180 DEG C, further cooling to 110 DEG C, adding an antioxidant, an extreme pressure agent, an oily agent and a tackifier, then performing post-treatment by using a homogenizer or a cyclic shearing machine, filtering and packaging. Tests prove that the grease becomes thin when meeting water, the thinness is far less than that of traditional extreme pressure lithium, the grease is less prone to loss and can provide good anti-rust protection for bearings, when the water content in the grease is 15%, the extreme pressure performance is reduced to a smaller extent and higher than the extreme pressure performance of the traditional extreme pressure lithium grease, the bearings are not worn at all, the production is not affected, and the grease is very suitable for high load, high temperature, high speed and much water working conditions of the bearings.

Description

technical field [0001] The invention relates to a lubricating grease made of high-viscosity mineral oil as base oil, fatty acid lithium and calcium soap as thickener, and compound additives, high extreme pressure lithium-based lubricating grease. Background technique [0002] With the development of the metallurgical industry, the working conditions of the equipment in the rolling mill are becoming more and more harsh, especially the bearings of the equipment in the hot-rolled strip mill are mostly operated in the environment of high temperature, high speed, heavy load, water and dust, which is harmful to The performance of lubricating grease used in rolling equipment bearings puts forward higher requirements. [0003] At present, the lubricating grease used for bearings of steel rolling equipment is mainly based on extreme pressure lithium base grease. However, due to the limitation of the soap structure and additives of this type of grease, the grease is often lost or thin...

AI Technical Summary

Problems solved by technology

[0003] At present, the lubricating grease used for bearings of steel rolling equipment is mainly based on extreme pressure lithium base grease. However, due to the limitation of the soap structure and additives of this type of grease, the grease is often lost or thinned by water washing during use, and the grease The extreme pressure performance drops significantly after entering water, which brings a lot of inconvenience to users, such as the viscosity of grease decreases due to water entering, and the bearing is easy to wear due to lack of sufficient grease, or due to the entry of a large amount of water. Rust, so prone to lubrication accidents

This affects normal production, and the economic losses caused by accident maintenance are staggering in rolling mills.