Mechanical impurities refer to substances that are contaminated by the outside world, mainly oil sludge, sand, dust, rust, metal shavings, and fibers. Most of them are mixed during storage, transportation, storage, and use.
These impurities can easily block the filter screen and pipeline when mixed into the oil. When the quantity is large, it will cause abnormal oil supply; entering the equipment will cause mechanical wear. Therefore, special attention should be paid to cleanliness during storage and transportation, and it is best to filter it before use.
In general, the mechanical impurities of lubricating base oils are controlled below 0.005% (less than 0.005% is considered non-existent).
But for some oil products with a lot of additives, the index of mechanical impurities is slightly larger.
The reason is that after adding a variety of additives, there may be some solvent insolubles, and these colloidal metal organics do not affect its use effect.
Therefore, the quality of the oil cannot be judged simply by the size of the mechanical impurities, and the nature and type of the impurities should be analyzed.
Company: Nantong Huaxing Petroleum Instrument Co., Ltd.
Contact: Tang Shengrong
Address: No. 18 Rixin Road, Hai'an County, Jiangsu Province