Analysis of Gumming and Carbon Deposit in Screw Air Compressor
Analysis of Gumming and Carbon Deposit in Screw Air Compressor
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Analysis of Gumming and Carbon Deposit in Screw Air Compressor

Dec 9, 2019
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Sometimes when the machine is operating normally, after one or two days of downtime, it will fail to start, and the host will alarm when the temperature is high or the host is overloaded.
After inspection, it was found that the problem was caused by gelling of the oil circuit of the air compressor.

1.Air filter

The air filter has not been replaced for a long time, or the accuracy of the non-original air filter is insufficient, and the dust particles are sucked into the air to thicken the oil, which increases the time of the oil oxidation reaction, thereby accelerating the formation of carbon deposits or gelling.

2.Oil quality

The original lubricating oil will not cause carbon deposits or gelling during the specified use period. At present, there are many purchasing channels for lubricants, and the quality is inevitably uneven. Some users use alternative oils. Gelation is common.

3.Temperature (ambient temperature and main engine outlet temperature)

Different types of lubricants have different oxidation initiation temperatures. The long-term high-temperature operation of the air compressor will accelerate the oxidation of the lubricating oil. The lubricating oil is likely to form some polymer precipitates, causing the lubricating oil to gel, and the higher the oxygen content, the more intense the oxidation reaction of the lubricating oil and the service life of the lubricating oil It will become shorter and shorter, so it is recommended to control the operating temperature and ambient temperature of the air compressor to operate within the range required by the manufacturer.

4.Moisture effect

Water vapor in the air enters the inside of the compressor and comes into contact with the lubricant, which will cause the lubricant to emulsify. The emulsified lubricating oil is more susceptible to hydrolysis reaction and causes rust inside the air compressor. These rusts will further cause the lubricating oil to form gel.


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