The tunnel fan needs to work in an open environment for a long time, eroded by rainwater or other factors, leading to rust. Although a small amount of rust does not affect the operation of the fan, it may affect the dynamic balance of the fan, increase the vibration of the fan, and affect the intake efficiency. Phosphoric acid or hydrochloric acid removal with phosphorus. Phosphate is not only cheap, but also has good rust removal effect. Soak the tunnel fan impeller in the phosphate, transform iron oxide into iron phosphate, black coatings, and static overnight, air dry. After the surface is dry, scrape the iron phosphate.

In addition, we can also use vinegar or baking soda to remove rust. If we are not vinegar, we need to soak the tunnel fan blades for a long time. , After mixing, stripped and corroded with friction.

The above are several methods about how to remove rust to remove rust. In addition to the above methods, we can also use spray paint, chrome plating and other methods to prevent secondary rust. Only when the tunnel fan is regularly maintained and maintained, so that the equipment can be guaranteed for a long time. If you have other questions or puzzled questions about the tunnel fan, we welcome your consultation and look forward to cooperating with you.