Solution for Wear and High Temperature Resistance of Pump Shaft Bearing Seals
The pump shaft bearing seals are necessary components of pumps and are used for the isolation of interior pumps from exterior environment and for the backflow of liquid between the pumps, which is significant for the normal functioning of pumps. Therefore, it is of different importance to ensure the high quality and performance of these bearing seals.
However, when exposed to severe working condition, the bearing seals may suffer from both wear and high temperature resistance. To solve this problem, there are several solutions available. The most versatile solution is coating the bearing seal parts with a special material, such as ceramic or tungsten carbide. Ceramics can be used as a sacrificial wear layer that would wear away before the underlying surface. Tungsten carbide is harder and more wear resistant than the base material, meaning it can last longer and withstand higher temperatures.
Another way to improve the wear and high temperature resistance of the bearing seals is to coat them with lubricants to reduce friction and wear. This can be done by applying a coating of lubricant to the outside surface of the bearing seal and/or the inside of the pump chamber. Lubricants such as molybdenum disulfide, graphite and PTFE/Fluon are typically used for this purpose.
In addition, surface-treated materials can also be used to improve the wear and high temperature resistance of the pump shaft bearing seals. These surface-treated materials have a very fine and impregnated layer on their surface, which results in a very hard and wear resistant surface. Hard-chrome plating, nitriding and hard anodizing are the most common surface treatments used to improve the wear and high temperature resistance of the bearing seals.
Finally, it is important to select the right material for the bearing seals. For instance, stainless steel, titanium and its alloys are corrosion resistive materials that can also be applied to improve the wear and high temperature resistance of the bearing seals.
Overall, when considering which solution to choose, one should keep in mind the pumps working conditions, including the displacement, the pressure, and the speed. With careful selection, the right materials and appropriate coatings can be used to provide optimal wear and high temperature resistance for the pump shaft bearing seals.
