A kind of grease specially used for construction machinery and preparation method thereof

Abstract

The invention provides a grease for engineering machinery, which comprises the following raw materials by weight proportion: 4-6 parts of 12 hydroxystearic acid, 2-4 parts of boric acid, 2-4 parts of lithium hydroxide, 10-12 parts of water, 70-80 parts of base oil A, 20-30 parts of base oil B, 0.2-0.4 parts of anti-oxidant A, 1.5-2.5 parts of anti-oxidant B, 0.3-0.4 parts of antirust agent, and 1.5-3 parts of an anti-wear reagent at extreme pressure. The invention also provides a method of the grease for engineering machinery. The grease has the advantages of good anti-oxidizability, low temperature fluidity, high temperature resistance, lubricity, abrasion resistance at extreme pressure, shearing stability, water-resistance and anti-rust property, artificial charging and machine charging requirements can be simultaneously satisfied, and usage life is long.

Description

technical field [0001] The invention relates to a preparation method of lubricating grease, in particular to a kind of lubricating grease specially used for construction machinery and a preparation method thereof. Background technique [0002] my country is a big country producing construction machinery in the world, but it is far away from a powerful country in construction machinery. Although after years of market economy guidance, through the introduction of technology, joint ventures and cooperative production with multinational companies, and striving to implement the ISO quality management system standards in terms of technical requirements, the overall product quality level of the entire industry has improved, but the quality level of my country's construction machinery products It is still unsatisfactory, resulting in a large gap between the share of construction machinery products in the international market and developed countries. In recent years, my country's con...

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Problems solved by technology

[0007] The operating conditions of construction machinery vary greatly, the load changes greatly, start and stop, and the impact vibration is large. The lubricating grease used must have good oiliness and extreme pressure performance; there are many open-air operations in the field, and they are often attacked by wind, rain and dust. The changes are large, so the lubricating grease used must have good viscosity-temperature performance and water resistance, and the anti-oxidation performance is better; the operation of construction machinery is complicated, the speed of the machine changes greatly, and the start and stop are frequent, and the lubricating grease is required to have good anti-wear performance; Generally, the construction site is far away from the base, and the maintenance is also inconvenient, so the grease is required to have a long life and good lubricating performance; the construction site is generally narrow in space, resulting in inconvenient activities and limited operation, requiring the service life of the grease Long, convenient replacement and filling; machine filling and manual filling coexist, requiring good low-temperature fluidity and high-temperature adhesion; there are many workers and obstacles on the construction site, and there is a certain degree of difficulty in safe work, which requires very precise movements. Flexible and reliable; there are many types of construction machinery, large differences in equipment, complex structures, large differences in working conditions, and different requirements for lubrication and maintenance, so the requirements for lubricants and lubrication work are high

At present, it is difficult to use ordinary lithium-based grease and extreme pressure lithium in the market to meet the above requirements of construction machinery lubrication. Therefore, in order to meet the needs of construction machinery development, it is necessary to develop construction machinery grease with better performance. Oxidation resistance, low temperature fluidity, high temperature resistance, lubricity, extreme pressure and wear resistance, shear stability, water resistance and rust resistance

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