The inspection content is:

   ① Blades are typically inspected using dye penetrant testing, which primarily checks the working surface of the blades for defects such as cracks, porosity, and sand particles. For induced-draft fans, if the blades have suffered severe wear to the point where their thickness has been significantly reduced as measured by weighing, they must be replaced.

   ② Check whether the blade bearings are intact and whether their clearance meets the standard. If the inner and outer races of the bearing, as well as the rolling elements, exhibit fan-shaped cracks, scratches, wear, rust, overheating, or discoloration, and if the clearance exceeds the allowable tolerance, replace the bearing with a new one.

   ③ Check whether all fastening screws have cracks or are loose. For critical screws, non-destructive testing should be performed to ensure screw quality.

   Wind turbines are now used in many industries and are widely applied in numerous construction fields. It can be seen everywhere in daily life. To meet the diverse needs of different industries, companies have made significant efforts in enhancing the performance and variety of fans.

   Considering the current market, there are many types of axial-flow fans. But precisely because there are too many fans—too many fans—and the names or performances don't differ much, it's easy for consumers to get confused. For example, axial-flow fans and bearing-mounted fans are among them. Next, Xiaobai will tell you the difference.

    Axial-flow fans are very common in industrial and mining enterprises, and many companies use them. Axial flow is easy to understand—it means the wind direction is parallel to the axis, just like in a typical fan. There is no difference between a centrifugal fan and a bearing-mounted fan.