Complex lithium-base lubricating grease and production technique thereof

Abstract

The invention relates to a complex lithium-base lubricating grease and a production technique thereof. The complex lithium-base lubricating grease comprises the following components in parts by weight: 9-13.5 parts of 12 hydroxystearic acid, 3-4.5 parts of decanedioic acid, 2.6-3.9 parts of lithium hydroxide, 5-50 parts of compound calcium sulfonate lubricating grease, 22.8-78.3 parts of base oil, 0.5-1 part of thickener, 1-3 parts of multifunctional agent, 0.5-1 part of antioxidant and 0.1-0.3 part of metal deactivator. The production technique comprises the following steps: converting superhigh-base-number calcium sulfonate with a conversion agent at 60-100 DEG C for 20-60 minutes until the superhigh-base-number calcium sulfonate becomes obviously thickened, and heating to 140-180 DEG Cto remove water, thereby obtaining the complex calcium sulfonate lubricating grease. The invention has the advantages of long service life in the occasions of long grease-complementation period under long-term heavy load, slight oxidative stain at high temperature, excellent anti-rusting property in damp or sea occasions, and low loss in the occasions of substantive water flushing; and the invention has favorable lubricating property and can prolong the service life of the bearing in the occasions of dampness and heavy load.

Description

technical field [0001] The invention relates to a lubricating grease and a production process thereof. Background technique [0002] Lithium complex grease is a high-quality high-temperature grease widely used in the lubrication of equipment bearings in mining, metallurgy, steel rolling, automobile, chemical industry, machinery, ships and other fields. Its advantages are high dropping point and wide applicable temperature range; colloidal stability and shear resistance are better than ordinary lithium-based grease, and its service life is longer than ordinary lithium-based grease; the leakage is small, it is not easy to lose in the bearing, and it saves lubrication The amount of fat used. [0003] However, there are also deficiencies in the use under some harsh conditions, as shown in the following aspects: [0004] In the case of long-term operation and long grease filling cycle, the bearing life of complex lithium-based grease cannot fully meet the requirements, especial...

AI Technical Summary

Problems solved by technology

[0006] In wet and watery places, especially in seawater, its anti-rust performance is not ideal

[0007] In the case of a large amount of water flushing, the loss will increase, which is not good for bearing lubrication and sealing

[0008] In the case of heavy water load, the extreme pressure performance will be greatly reduced, the wear will be accelerated, and the service life of the bearing will be reduced