Why are cast aluminum rotor motors so widely accepted?_Wolong Nanyang Explosion-proof Motor, China Motor Manufacturer

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Why are cast aluminum rotor motors so widely accepted?

source：未知 time：2024-07-10 10:40nbsp; click：

According to the material characteristics of the motor rotor slots, there are wound rotors, cast aluminum rotors and permanent magnet rotors. In comparison, cast aluminum rotors are the most widely used, of course, due to some cost and process advantages of this type of rotor.

The slot shape of the cast aluminum rotor is not limited by the profile, and the best slot shape can be selected at will to improve the starting performance of the motor; the rotor copper bar accounts for about 40% of the copper used in the entire motor. The use of cast aluminum rotors can greatly reduce the material cost of the motor; cast aluminum conductors fill the entire rotor slot, and the slot fill rate is close to 100%, which is conducive to heat dissipation; the rotor blades and end rings are cast together to increase the heat dissipation capacity, without the need for additional fans, and some processing procedures are omitted; the cast aluminum rotor structure is symmetrical and compact, and the balance column and end rings are cast together, which is easy to achieve mechanical balance; the production cycle is short, the working hours are less, the cost is low, and it is suitable for mass production.

However, cast aluminum rotors are not a panacea for everything. For example, for high-efficiency high-power motors, copper bar rotors or cast copper rotors may be required.

The quality of punching directly affects the quality of core press-fitting. Uneven groove shape will affect the quality of wire embedding. Excessive burrs, large and small teeth out of tolerance, and the dimensional accuracy and tightness of the core will affect the magnetic conductivity and loss.

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