What is the meaning of cleanliness of oil filter less than or equal to 6?
Later with the cleanliness of concept in the expansion of different industries, the United States Aircraft Industry Association (ALA), the American Society for testing and materials (ASTM), the American Society of Automotive Engineers (SAE) jointly proposed in 1961 MOOG (SAE - 6D) oil cleanliness standard
The concept of cleanliness first appeared and applied to the aerospace industry. In early 60s, American Automotive Engineers (SAE) and the American Aerospace Industries Association (SAE) began using uniform cleanliness standards, which were applied to the aviation and automotive industries. Cleanliness of electromechanical instruments is a very important quality index. Cleanliness indicates the amount of dirt left on the surface of a part or product after cleaning. In general, the amount of dirt including type, shape and size, quantity, weight and other indicators; what specific index depends on different dirt, the impact on the product quality and cleanliness control accuracy requirements.
General sense oil cleanliness level less than 6 refers to the oil filtered oil filter clean degree can be less than 6, because the cleanliness is a measure of the impurity content of oil in the index, the lower the value of oil cleanliness that is clean. Due to the use of the entire industrial sector of the oil industry, the vast majority are mineral oil, which is refined from petroleum, so the cleanliness is not possible for 0. new domestic oil factory when the cleanliness status is generally 6-8. Therefore, the cleanliness of the oil filter is less than or equal to 6, which means that after the waste oil is treated by the oil filter, the cleanliness is less than or equal to 6, and it belongs to the combined use standard, that is to say, the oil filtering capacity of the oil filter is also acceptable.
