What are the materials that can be used in the impeller of the turbocharger?
The material should not blindly pursue only with the highest strength of materials, also need to consider from economy, usually the manufacturing cost of centrifugal impeller is quite high, high strength materials, processing costs will be high (for example, the same impeller, using titanium alloy and aluminum manufacturing cost difference not much difference of nearly 10 times a), so to consider.
There are many decisive factors in centrifugal impeller selection. The diameter of impeller, the speed of rotation, the direction of the curved surface of the blade surface (the velocity triangle and the position of the space as the basis of calculation) are the basis of material selection. At the same time, a large amount of calculation is needed to determine the proper strength range of the material
The impeller of the supercharger belongs to the centrifugal impeller. The speed of the centrifugal impeller is usually high. The material of the high speed rotor is chosen as light material with little density, and the rigidity of the material is better. At present, the most commonly used impeller materials are aluminium, stainless and titanium alloys.
