According to the standard, the analysis method of the mechanical impurity content of lubricating oil is implemented in GBT511-88. Different types of lubricating oil filters are used in each process of lubricating oil to ensure that the mechanical impurity content index of waste oil meets the requirements of national standards, and it can also meet User-specific requests for high cleanliness.
1 Analysis of Lubricant Pollution Sources Lubricant consumption mainly includes the four processes of raw materials entering the factory, blending, filling and waste storage.The blending process basically completes the pipelined closed consumption, and the waste storage after filling is mainly in sealed packaging. The main source of oil pollutants is the introduction of raw materials, while the pollution caused by operation (including maintenance) is a secondary source. The pollution sources of waste oil include inherent pollutants, internally generated pollutants, external intruding pollutants, and pollution caused by maintenance.
1.1 Inherent pollutants The inherent pollution of waste oil includes: (1) the raw material oil itself contains impurities such as root oil, and the adsorbent is used in the processing process; if improperly handled, it will be mixed into the root oil and form base oil pollution; (2) base oil Storage tanks, car tankers, trains, tankers, and other transportation vehicles are improperly liquidated to form impurities in the bottom oil; (3) Due to the sound of consumer technology, impurities are mixed in the packaging.
1.2 Internally generated pollutants Lubricants are mainly internally generated pollutants, (1) deterioration of oil products such as precipitation of additives, mixing of different oil products, etc .; (2) corrosion of the inner wall of oil tanks, such as corrosion of the inner wall of Q235A oil tanks The rust causes oil pollution, especially the parts of the tank top and the tank wall above the safe level that do not touch the oil; (3) The wear of the pump and pipeline is abraded by impurities 1.3 External invading pollutants External invading pollutants come from breathing Valves, gauge openings, light-transmissive holes, and pollution from the filling process. 1.4 Pollution from maintenance. Pollution from maintenance comes from disassembly and assembly of the maintenance pump and pipeline, and pollution from welding.