Wear Prevention Measures for Forward-Curved Double-Inlet Centrifugal Fans

Wear Prevention Measures for Forward-Curved Double-Inlet Centrifugal Fans

Previously, we discussed several major forms of wear in forward-curved double-inlet centrifugal fan units. Let’s analyze the preventive measures for these various wear issues. I hope users and readers will carefully review this article. I believe it will be of great help to everyone. Let’s take a look at the specifics! As a countermeasure, protective measures can be applied to the blade surfaces of forward-curved double-inlet centrifugal fan units. The main methods we can employ include: carburizing, plasma surface treatment, super-hard alloy spraying, and ceramic chip bonding. These methods share a common feature: they increase blade hardness and improve wear resistance, but each has its own unique drawbacks. For example, the carburizing process is more complex, and the blades are prone to severe deformation during the process. The second countermeasure involves applying a wear-resistant coating to the surface of the forward-curved double-inlet centrifugal fan unit. This is a relatively simple and cost-effective solution. However, its drawbacks are also evident. Specifically, this protective layer wears out quickly, lasting only 3–5 months at a time, and requires periodic re-coating. The third preventive measure involves appropriately optimizing the structural design of the blades. Therefore, further research is necessary to reduce wear on the fan blades. The fourth countermeasure is to install wear-resistant cascades in areas prone to wear. This can improve the wear resistance of the blades and extend the service life of the centrifugal fan. One possible solution is to appropriately adjust the machine’s aerodynamic design. The main points are as follows: 1. Select an appropriate inlet shape for the forward-curved double-inlet centrifugal fan. 2. Keep the rotational speed of the forward-curved double-inlet centrifugal fan to a minimum. 3. Choose an appropriate propeller flow channel shape. Through these measures, the likelihood of collisions between solid particles and the blades can be reduced.