Steel wire rope lubricating grease composition for low-temperature environments

Abstract

The invention discloses a steel wire rope lubricating grease composition for low-temperature environments. The composition is characterized by containing the following ingredients in parts by weight: 3.2-5.2 parts of 12-OH lithium stearate soap, 0.8-1.3 parts of lithium stearate soap, 54-76 parts of mineral base oil, 15-35 parts of poly-alpha-olefin synthetic oil and 1.0-3.5 parts of colloidal graphite. According to the composition, poly-alpha-olefin synthetic oil with excellent low-temperature properties is adopted as base oil, and meanwhile, the colloidal graphite serves as a friction reducer, so that novel semi-fluid steel wire rope lubricating grease capable of meeting low-temperature use requirements is obtained finally.

Description

technical field [0001] The invention relates to a steel wire rope lubricating grease composition, in particular to a steel wire rope lubricating grease composition used in a low-temperature environment. Background technique [0002] Wire ropes are used in many types of machinery and construction equipment, including traction machinery, cranes, elevators, drilling machinery, tower cranes, etc. The wire rope is pre-lubricated during manufacture, mainly the wire rope surface grease and the wire rope core grease. During the working process of the steel wire rope, the pre-added lubricant will be squeezed out due to the tension of the steel wire, or washed away by rain or become a dry grease block and peeled off, so the pre-added lubricant cannot maintain the service life of the steel wire rope for a long time. In order to prevent the wear and tear caused by the mutual phase movement inside the wire rope and prevent the corrosion of the wire rope, it is necessary to add lubricant...

AI Technical Summary

Problems solved by technology

The general-purpose lithium-based grease is made of ordinary mineral base oil, because the freezing point of the base oil is generally above -15°C, so this product can meet the lubrication requirements of steel wire ropes with an ambient temperature in the range of -10 to +80°C, but not Lubrication requirements for wire ropes at -40°C

The grease with poor low temperature resistance will have poor permeability, so that the product can only lubricate the outside of the wire rope, but cannot effectively lubricate the inside of the wire rope, and may even appear brittle, falling off, etc.

And because the product does not contain anti-friction agent, it is also very easy to cause abnormal wear of the wire rope under medium and heavy load conditions

Graphite lithium base grease has a certain anti-friction effect, but at a temperature of -40°C, the grease will also have problems such as hardening, difficulty in applying grease, and embrittlement

Some low-temperature lithium-based greases, although the freezing point of the base oil used can reach below -40°C, which can ensure the coating of the grease at -40°C, but its wear resistance is poor, which greatly shortens the life of the wire rope

It can be seen that the existing general-purpose lithium-based grease, graphite lithium-based grease, low-temperature lithium-based grease and other products cannot fully meet the needs of steel wire rope devices in construction machinery such as electric shovels, cranes, and loaders under the low temperature of -40°C in cold regions. lubrication requirements

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