xiehe model

The blisk mainly adopts the integrated design of turbine blades and turbine turntable to reduce weight and improve stability under high-speed operation. When the blisk is processed, it integrates the engine rotor blades and the wheel disc, eliminating the need for tenons, tenon grooves and locking devices in traditional connections. It can effectively avoid the loss of tenon airflow, improve aerodynamic efficiency, and make the engine more efficient. The structure is greatly simplified. It mainly analyzes the blisk structure and manufacturing process requirements. Composite manufacturing processes are adopted in China. Many process technologies are combined to form various different integral blisk manufacturing processes. At the same time, some of these technologies are still in the research and development stage in China. Then we often encounter some problems in the process of using blisks, and these problems are often critical. So what exactly is the problem? Next, let me briefly introduce it to you.

1. Generally when we use blisk technology, when the blades are damaged, we will replace the entire rotor, which will seriously affect the entire blisk processing process. In order to prevent this situation, we need to The integral blisk is connected to other stages of the rotor through bolts to form a decomposable connection structure.

2. The blades of the high-pressure compressor are short and thin, the centrifugal force of the blades is small, and the required radial thickness of the rim is small. It is precisely because of this that the weight reduction effect brought by the blisk structure we adopt is not obvious.

3. During the operation of the engine, the rotor blades may be damaged by foreign objects, and vibration may also cause cracks in the blades. It is actually difficult to replace them individually, because this will directly lead to the scrapping of the entire blisk.

4. The flow channel is narrow, the blades are thin and the blade shape is complex. However, the process characteristics of blades and discs need to be taken into consideration during processing, so basically the process implementation is more complex and requires higher manufacturing technology.

In summary, the above is the editor’s preliminary understanding of this product. If you want to know more, please call our Xiehe processing manufacturer.