Non Detergent Oil

Water may be present in the lubricating oil in three forms, dissolved in water, water emulsion and free water. Dissolved water is water that has been chemically absorbed into the oil. water emulsified water that maintains its chemical integrity, but is kept in suspension in oil by additives and contaminants. Free water describes water that is present in the oil, but not suspended.

Impact on lubrication
In general, water is a poor lubricant. Proper lubrication is dependent on the formation of an oil film to separate the opposing surfaces of friction. When pressure is applied to a film of oil, the oil viscosity increases proportionally to maintain protection. Water does not exhibit this trend and make boundary lubrication occurs when full of fluid film lubrication, otherwise, would be present.

Alarm limits
Water is considered among the most harmful of the possible presence of contaminants. Studies have shown that water present at all levels of life can reduce turnover by 10 to 100 times. Although the overall safety of the water varies from one machine to limit the alarm good condition of water contamination is 0.05% (500 ppm). The systems can be more tolerant to water, while others may be more sensitive. Some manufacturers have set limits as low as 30 ppm. Best practice would indicate that it is beneficial for preventing contamination of water at the lowest possible.

Control of contamination of water
Control of contamination of water requires two individual considerations. First, we must address the issues of keeping water out of the system. Water can contaminate a system through condensation when moist air between the component and a change in temperature causes water to condense and fall into the oil. Water can also enter a system of non-eaters drying defective panels and seals, and leakage of internal heat exchangers.

Second, measures must be taken to remove water when it entered into a system. This can be accomplished with a physical filtration, vacuum dehydration or by centrifugation. For systems subject to contamination, this type of purification can be installed in the system for removing water continuously or on demand.

The systems that are prone to contamination of the water should use an oil that quickly separates the water. The ability of an oil to separate from water is known for its separability. Detergent oils tend to be high demulsifiers poor, while oils turbines and many industrial lubricants have better separability. circulation systems subject to the influx of water, such as those found in rolling mills and power plants, can simply drain the tank to control contamination, provided that the parts of oil demulsibility good. In these situations, demulsibility oil must be monitored to ensure that contaminated water does not reach the components are lubricated.