Why does the air compressor lubricant turn black

Oxidation decay mechanism of air compressor lubricating oil

1. Oxidation: Air compressor lubricating oil reacts with air, nitrogen oxides and sulfides under high temperature and metal catalysis to produce alcohol, aldehyde, ketone, acid and oxygen-containing insolubles

2. Decomposition: Long-chain hydrocarbons decompose into small-molecule hydrocarbons and gases at high temperature.

Air compressor lubricant high temperature failure:

1. Iron filings inside the machine

2. Inhaled air has particles

3. Surrounding environment pollution (chemicals, etc.)

The reason why the lubricating oil of the air compressor turns black:

1. Additive heat

2. Wash out the original or coke produced during work

3. Too much dispersant

4. Carbon deposit

5. Deterioration

6. Mixing impurities

7. Excessive machine wear and metal chips enter