The rotor core is a crucial component of a flat - wire motor, typically located inside the stator. It consists of multiple iron cores that are used to hold and support the rotor coils. Its main function is to provide a magnetic field, enabling the motor to operate properly.
Usually, the rotor core is made of silicon - steel sheets with an insulating paint coating on the surface. These sheets are stacked together to form the core. This design can limit eddy currents between the thin sheets, increase the loop resistance, and thus reduce iron losses. In high - performance flat - wire motors, advanced materials such as 6.5% Si high - silicon steel, cobalt - iron, nickel - iron, amorphous nanocrystalline materials, and soft magnetic composites (SMC) may be used to improve the efficiency and performance of the motor.
The manufacturing process of the rotor core requires high precision. It is usually stamped by a high - precision stamping machine using a precise metal stamping die and an automatic riveting process. This can ensure the flatness and accuracy of the product to the greatest extent. In addition, some rotor cores may adopt a self - bonding process, which bonds the silicon - steel sheets together through a special coating to improve the fixing strength of the core, reduce vibration, and further enhance the efficiency and NVH level of the motor.
RotorCore sampe product
RotorCore test equipment
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