Novel lubricating grease, and preparation method and application thereof

Abstract

The invention relates to novel lubricating grease, which consists of the following components in part by mass: 50 to 58 parts of polyphenyl ether, 20 to 25 parts of silicon oxide, 10 to 13 parts of polyacrylamide, 1 to 4 parts of calcium silicate and 0.1 to 1 part of diphenylamine. According to the prepared lubricating grease, the extreme pressure performance composite wear value (ZMZ) / N is more than 550; and due to the addition of calcium silicate with a lamellar structure, the bearing capacity and sintering load of the lubricating grease are improved by over 80 percent and over 40 percent respectively, the direct contact of all components of a bearing is reduced, the abrasion is prevented, and a wear-resisting layer which is high in strength and is smooth like a mirror surface at the positions of a bearing groove, and a retainer contacting a rolling body is formed, wherein loads are born at the positions. The lubricating grease is suitable for kiln vehicle bearings of tunnel furnaces in the operating environment of high temperature and heavy loads, so that the service life of the kiln vehicle bearings of the tunnel furnaces is prolonged by over one time, and the economic and social benefit is improved obviously.

Description

technical field [0001] The invention relates to a novel lubricating grease, which belongs to the technical field of materials. Background technique [0002] The production environment of tunnel kiln kiln car is characterized by continuous, high temperature, high humidity, heavy load and dusty. The load capacity is generally 5 to 20 tons, and the calcination temperature in the kiln is 1500. ~1800℃, calcination time is 10~20 hours. The bearing part of the wheel is above 250°C. Because the kiln car has been subjected to high temperature and alternating heat and cold for a long time, the bearing cage and the steel balls will expand and contract with heat, and the oxide layer will form and fall off, which will eventually cause the steel balls to be stuck and unable to rotate. However, the propeller of the tunnel kiln is still rotating, and there is a lot of friction between the stuck wheel and the track. Under the conditions of high temperature and heavy load, ordinary calciu...

AI Technical Summary

Problems solved by technology

Judging from the use of damaged bearings, when the bearing is at a relatively high ambient temperature (960-1260°C in the firing zone of the kiln car), problems such as thermal expansion and dimensional instability will occur

At the same time, the bearing cage breaks after wear and tear, causing the bearing to lose its effectiveness, causing the wheel to lock up, resulting in a heavy vehicle

Frequent maintenance will greatly increase the production cost of enterprises, reduce efficiency and increase labor intensity

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