High temperature heat transfer oil pump oil seal knowledge decryption
The high temperature heat transfer oil pump floating oil seal ring must pay attention to the following items during installation and shutdown.
1 When the floating oil seal is started, it should be ensured that the sealing chamber is filled with lubricating liquid, ensuring that in the process of conveying, the medium is heated and slowly melted by steam, and the step of turning the car is essential before use. To prevent the soft ring from suddenly breaking when starting.
2 The floating oil seal ring will chemically react on the surface of the oil seal during operation. The main performance is the wear resistance of the tool surface and the elastoplasticity of the floating oil seal ring. Because the surface temperature of the floating oil seal ring can not be lower than the standard temperature requirement, heat treatment such as quenching and tempering is required for the hot forging oil seal ring.
3 There is a layer of carburizing structure on the surface of the floating oil seal ring, so the selection of heating temperature is an important problem. The heated oil seal ring will produce uniform austenite, which will increase the wear resistance, followed by the grinding of the oil seal ring surface. Stone in order to increase accuracy and finish. If there are scratches and polishing, it will affect the life of the oil seal ring.
4 After the machine is shut down, the high-temperature heat-conducting oil pump can not stop cooling immediately. In particular, the sealing oil and the cooling water of the end face seal should be kept for a long time. It should be until the temperature gradually drops below 80 degrees Celsius. Cooling can be stopped, otherwise damage to the sealed parts can result.
Therefore, the correct and proper material should be selected for the surface treatment of the oil seal ring to ensure the life of the oil seal ring.