Wire rope lubricating grease composition used in low temperature environment

A technology of grease composition and low-temperature environment, which is applied in the field of grease and can solve problems such as shortage

Inactive Publication Date: 2012-12-19
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For wire rope devices operating in cold regions, there is still a lack of lubricating grease products that can meet the low temperature requirements of -40°C and have good wear reduction, permeability, and rust resistance.

Method used

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  • Wire rope lubricating grease composition used in low temperature environment

Examples

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Comparison scheme
Effect test

example 1

[0031] The steel wire rope grease composition used in low temperature environment, the components and mass percentages are as follows:

[0032] (1) 12-OH lithium stearate soap 4.0%;

[0033] (2) Lithium stearate soap 1.0%;

[0034] (3) Poly-α-olefin synthetic oil 91.0%;

[0035] (4) High base value synthetic calcium acid 3.0%;

[0036] (5) Colloidal graphite 1.0%.

[0037] Poly-α-olefin synthetic oil (condensation point -50°C, 100°C kinematic viscosity 9.1mm 2 / s) 360g into the kettle, add 40g of 12-OH lithium stearate soap and 10g of lithium stearate soap. Heat up and stir. When the temperature rises to 210-220°C, stop heating and keep the temperature for 2 minutes. Stir and add 550 g of polyalphaolefin synthetic oil as cooling material. When the temperature drops to 125-130°C, add 30g of high alkali value synthetic calcium acid (base value 380mgKOH / g) and 10g of colloidal graphite (particle size<25μm), and stir evenly. Out of the cauldron. Grind 3 times with a three-...

example 2

[0039] The steel wire rope grease composition used in low temperature environment, the components and mass percentages are as follows:

[0040] (1) 5.0% 12-OH lithium stearate soap;

[0041] (2) Lithium stearate soap 1.2%;

[0042] (3) Polyalphaolefin synthetic oil 88.3%;

[0043] (4) High base value synthetic calcium acid 4.0%;

[0044] (5) Colloidal graphite 1.5%.

[0045] Polyα-olefin synthetic oil (condensation point -54 ° C, 100 ° C kinematic viscosity 7.5mm 2 / s) 400g into the kettle, add 50g of 12-OH lithium stearate soap and 12g of lithium stearate soap, heat up and stir, when the temperature rises to 210-220°C, stop heating and keep the temperature for 2min. Stir and add 483g of polyalphaolefin synthetic oil as cooling material. When the temperature drops to 125-130°C, add 40g of high alkali value synthetic calcium acid (base value 350mgKOH / g) and 15g of colloidal graphite (particle size<25μm), and stir evenly. Out of the cauldron. Grind 3 times with a three-rol...

example 3

[0047] The steel wire rope grease composition used in low temperature environment, the components and mass percentages are as follows:

[0048] (1) 3.6% 12-OH lithium stearate soap;

[0049] (2) Lithium stearate soap 0.9%;

[0050] (3) Poly-α-olefin synthetic oil 92.0%;

[0051] (4) 2.5% high base value synthetic calcium acid;

[0052] (5) Colloidal graphite 1.0%.

[0053] Poly-α-olefin synthetic oil (condensation point -54 ° C, 100 ° C kinematic viscosity 7.0mm 2 / s) 276g was put into the kettle, 36g of 12-OH lithium stearate soap and 9g of lithium stearate soap were added. Stir and heat up. When the temperature rises to 210-220°C, stop heating and keep the temperature for 4 minutes. Stir and add 644g of polyalphaolefin synthetic oil as cooling material. When the temperature drops to 125-130°C, add 25g of high alkali value synthetic calcium acid (base value 300mgKOH / g) and 10g of colloidal graphite (particle size<30μm), and stir evenly. Out of the cauldron. Grind 3 ti...

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Abstract

The invention relates to a wire rope lubricating grease composition used in low temperature environment. The composition comprises the following components by percentage: 3.2 to 5.2 % of 12-OH lithium stearate soap, 0.8 to 1.3 % of lithium stearate soap, 85 to 92.5 % of poly-alpha-olefin synthetic oil, 2.5 to 5.0 % of high-base number synthetic calcium and 1.0 to 3.5 % of colloid graphite. The invention is characterized by using the poly-alpha-olefin synthetic oil with excellent low temperature performance as base oil, and using a mixture of the high-base number synthetic calcium and the colloid graphite as an antifriction agent, thereby obtaining the novel semifluid wire rope lubricating grease with fatty acid lithium soap as a densifier. The product has excellent low temperature resistance, solves problems of greased difficulties in low temperature environment, easy embrittlement, falling off and grease throwing of present products, and can be applied to lubricate wire rope apparatus of various construction machineries at operating sites of domestic northern mines. Service temperature range of the composition is from -40 to 80 DEG C.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to a steel wire rope lubricating grease composition used in a low-temperature environment. Background technique [0002] Various electric shovels, cranes, loaders and other mechanical equipment are widely used in mining areas such as mines and open-pit coal mines. For these mechanical equipment, the lifting, loading and unloading or transshipment of materials are mostly realized through wire rope devices. The steel wire rope is a flexible rope twisted by multiple or multiple thin steel wires with the core as the center. In construction machinery, wire rope can play the role of traction, tension and bearing. For the operating sites in the northern mining areas of my country, especially in the northeast and northwest regions, the outdoor operating environment in winter often reaches below -40°C. Under the low temperature condition of -40°C, in order to ensure the normal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10N50/10C10N40/32C10N30/06
Inventor 王先会田宁宁刘翠苹刘在均
Owner CHINA PETROLEUM & CHEM CORP
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