Keywords: dewatering oil, quenching oil, quenching oil tank, quenching tank, heat treatment, quenching, cooling, mixing, Heat dehydration, Dehydration by precipitation,

What are the techniques for dewatering oil?

The quenching oil in the quenching oil tank should be careful not to mix water during heat treatment quenching. The water contained in the quenching oil will affect the cooling performance of the quenching oil, accelerate the aging of the quenching oil, affect the quenching quality of the workpiece, and even cause a fire. How to deal with the mixing of water in the quenching oil? First of all, it is necessary to find out the reason why the quenching oil is mixed with water, and take measures to prevent it from entering the oil again in the later period. The solution usually has the following methods.

① Heat dehydration.

If the quenching oil purchased has a high flash point, heat the oil containing moisture to 100-120°C and stir until bubbles disappear. However, it should be noted that due to the oxidation and decomposition of the oil during use, the light fraction increases and the flash point decreases. Therefore, it is best to measure the flash point before heating, and the heating temperature should be at least 30-50°C lower than the flash point.

② Dehydration by precipitation.

③ Centrifugal dehydration.

Centrifugal dehydration is mainly used for waste oil regeneration. Due to the different specific gravity of water and oil, water can be removed under the action of centrifugal force.

④ Filter and dehydrate.

More What are the skills of quenching oil dehydration?: www.quenchtank.com/view-226.html