Preservation oils are widely used in industry. These are petroleum oils that contain anti-corrosion additives: oxidized petrolatum, Ca and Ba sulfonates, nitrated petroleum oils. In total, the amount of additives is about 3% of the total weight of the oil.
There are two types of preservation oils:
- preservation and operational oils;
- preservation oils.
The main difference between these types of oils is that preservation-operational oils are used only for the protection and storage of parts and mechanisms (motors, gearboxes, compressors). They can be applied to parts by spraying, dipping or pouring. Preservation oil is poured into the crankcase (short-duration idling for 10-20 minutes is allowed), then drained (oil must cover the whole surface of the part) or left for the entire storage period.
Preservation-operational oils possess quite high surface properties. The formed protective film is denser, resistant to different types of external influences, and has excellent adsorption and chemisorption characteristics. Therefore, preservation-operational oils are characterized by high protective efficiency, anticorrosive, extreme pressure, antiwear properties.
Preservation oils are intended only for temporary protection of machinery, equipment, as well as any metal products. The main properties of preservation oils are: thermal stability, low volatility, low aggressiveness, high resistance to corrosion.