Urea-based lubricating grease composition

Abstract

The invention discloses a urea-based lubricating grease composition and a production method thereof. The method comprises the following steps: blending base oil, organic amine, isocyanate, an anti-wear agent and an antiseptic according to a certain ratio, adding partial base oil into a first reaction vessel, heating, adding paratoluidine, stirring and heating, and stopping stirring to obtain a material for later use; adding residual base oil into a second reaction kettle, heating, adding isocyanate, stirring and heating, adding the organic amine to the first reaction kettle, stirring, and adding all the material obtained in the first reaction kettle to the second reaction kettle; continuously stirring and heating, and immediately stirring three times; pumping the product obtained in the second reaction kettle into the first reaction kettle, cooling, adding the organic amine, stirring, adding the anti-wear agent, and homogenizing to obtain the urea-based lubricating grease composition. Molybdenum carbon phosphate is introduced into the formula of urea-based lubricating grease for the first time, so the extreme pressure anti-wear property of common urea-based lubricating grease is effectively improved.

Description

technical field [0001] The invention relates to a lubricating grease, which belongs to the field of petrochemical industry. Background technique [0002] Statistics show that about one tenth of the lubricating grease is used for the lubrication of iron and steel industry machinery and equipment every year, and these lubricating greases are used in large quantities on continuous casting machines. important topic. With the improvement of the efficiency of the continuous casting machine, the working environment of the continuous casting machine bearing is more severe, the temperature is as high as 800-1000 ℃, the baking of the billet can make the surface temperature of the continuous casting machine bearing cover reach 150-300 ℃, the bearing and grease will be damaged It is corroded by a large amount of water and steam sprayed to cool down the billet, and it bears the heavy pressure of the billet under high-speed operation. Soap-based grease cannot adapt to the lubrication of...

AI Technical Summary

Problems solved by technology

[0003] In recent years, in the research and development of urea-based grease, some new technologies and formulas have also emerged. These technologies and formulas have played a certain role in improving the extreme pressure and wear resistance of urea-based grease. For example, the publication number is CN101886018A The patented technology proposed in only improves the oxidation stability of urea-based grease, and the technology proposed in the publication number CN101368129A uses T361A borate as an anti-wear agent to improve the extreme pressure resistance of urea-based grease. Wear performance plays a certain role, and its sintering load reaches 400kg. Therefore, the urea-based grease in the prior art is still lacking in extreme pressure wear resistance at high temperature, especially in high temperature, high load impact or extremely unfavorable conditions. Under high temperature conditions, the lubricating performance and anti-wear extreme pressure performance of the grease are significantly reduced, and it cannot be used for a long time under high temperature conditions.

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