How to deal with low temperature solidification of grease in winter?

February 11, 2024

How to deal with low temperature solidification of grease in winter?

With the arrival of winter, the temperature gradually decreases, and the solidification of grease at low temperatures has become a problem faced by many equipment. In particular, the grease in the caster rotation system, once solidified, will lead to poor caster rotation, affecting the normal use of the equipment.

First, the reasons for low temperature solidification of grease in winter

Greases solidify at low temperatures mainly because the Base Oil in their composition increases in viscosity and decreases in fluidity at low temperatures. At the same time, the additives in the grease may also crystallize or aggregate at low temperatures, further affecting its fluidity. In addition, if the equipment is not used for a long time in a low temperature environment, it will also cause the moisture in the grease to condenze, form crystals and block the oil passage, affecting the flow of the grease.

Second, the measures to solve the low temperature solidification of grease in winter

1. Use the right grease: Choose a grease with low temperature resistance, low viscosity base oil and additives that are not easy to crystallize, which can better adapt to the low temperature environment and maintain good fluidity.

2. Regular heating equipment: Through regular heating equipment, increase the temperature around the grease, reduce the viscosity of the base oil, so that it maintains good flow. When heating, be careful not to overheat the equipment to avoid damage to the equipment.

3. Regular mixing of grease: By stirring the grease regularly, it is evenly distributed on the surface of the equipment, which is conducive to the fluidity of the grease. It is recommended to stir the equipment before use for a few minutes at a time.

4. Maintain proper storage temperature: During the storage process, the grease should be stored in a place with a high temperature to avoid contact with cold air resulting in too low temperature. At the same time, attention should also be paid to prevent the grease from being exposed to a high temperature environment for a long time, so as not to affect its performance.

5. Regular inspection and maintenance: check the lubrication of the equipment regularly, clean and replace the solidified grease in time. For equipment that is not used for a long time, comprehensive inspection and maintenance should be carried out before use to ensure its normal operation.

Third, the key factors to consider when choosing low-temperature greases in low-temperature environments

① Working temperature range: Determine the working temperature range of low-temperature grease to ensure that it is suitable for a specific low-temperature environment. Low temperature greases are usually designed for extremely low temperature conditions and can provide stable lubrication performance in frozen or extremely cold environments;

② Selection of base oil: Low-temperature greases usually use base oil with a low freezing point to ensure fluidity at low temperatures. Some common low temperature base oils include polyalphaolefin (PAO) and polyisoprene (POE);

Additives: Low-temperature greases may contain some special additives, such as antioxidants, anti-freeze-thaw agents and anti-corrosion agents, to enhance the performance under low temperature conditions;

(4) Fluidity: Choose a low temperature grease with good low temperature fluidity to ensure that mechanical parts can still be effectively lubricated in an extremely cold environment;

Cold resistance: When choosing a low temperature grease, its cold resistance at cold start should be considered to ensure that effective lubrication can also be provided before the mechanical parts start running.

In practical applications, it may be necessary to choose according to the physical properties of the low-temperature grease, the requirements of the mechanical system and the different environmental conditions. It is best to refer to the technical specifications of low temperature greases and the manufacturer's recommendations to ensure that the selected low temperature greases meet the needs of the specific low temperature environment.

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