Centrifugal Fan Impeller Manufacturing Process

As the core component of a fan, the impeller directly affects the performance and efficiency of the equipment. We have rigorous standards for every step of the production process. The following is the impeller manufacturing process:

1. Five-Axis CNC Spinning, One-Time Forming Technology for the Front Disc

The impeller front disc is the core component of a centrifugal fan, and its profile accuracy directly affects airflow efficiency and noise control. We use a 5-axis, 3-linkage CNC spinning machine to achieve one-time spinning of the front disc's arc profile. This technology not only ensures a tight fit between the front disc and the blade mating surface but also greatly improves production efficiency and reduces subsequent processing steps.

2. Robotic Bending Technology, Ensuring Blade Forming Accuracy

The blade is the "heart" of the impeller, and its shape accuracy directly determines the airflow transmission efficiency. We have introduced Kawasaki robotic bending technology to ensure that the blade's one-time forming accuracy meets design requirements. The application of this technology effectively improves the quality stability of the blades, laying a solid foundation for the stable operation of the fan.

3. Strict Welding Standards, Double Quality Assurance

Welding quality is of paramount importance for the safe operation of the fan. At Xima Wind Turbines, we strictly adhere to GB/T985.1 and GB/T985.2 standards for the machining of the weld bevels on the front and rear discs, ensuring welding quality from the source. Simultaneously, the weld quality must also meet the requirements of NB/T47013.2-2015. This dual-standard control provides a strong guarantee for the safe and reliable operation of the wind turbine.

4. Turning Machining: Strict Dimensional Control with No Compromise The machining accuracy of the impeller's outer diameter, inner bore, and inlet height directly affects the overall assembly quality of the wind turbine. We use vertical lathes for turning, leveraging advanced equipment and sophisticated processes to ensure that every dimension meets design requirements, providing reliable support for precise wind turbine assembly.

5. Dynamic Balancing Accuracy: Exceeding National Standards Dynamic balancing is one of the key steps in the manufacturing process of wind turbine impellers. We strictly adhere to the JB/T 9101-2014 standard, raising the dynamic balancing quality level to G2.5, far exceeding the industry-standard G6.3. This stringent standard effectively reduces vibration and noise during fan operation, improving operational stability and service life.

6. Surface Treatment Processes Enhance Durability and Adhesion

In the pre-coating surface treatment stage, we employ a new type of hook-type shot blasting machine to achieve a Sa2 rust removal level. This process not only eliminates surface stress (tensile stress) concentration but also effectively enhances the adhesion of the surface coating, thereby improving product durability and corrosion resistance.

In actual production, we understand that market demands are constantly changing, and product characteristics and requirements vary. Therefore, we continuously optimize our processes based on actual conditions, improving production efficiency while ensuring consistently high product quality to better meet the diverse needs of the market.