Rare earth permanent magnet materials are the core materials for manufacturing magnetic mechanical devices. Magnetic mechanical devices usually use the interaction between the magnetic field generated by permanent magnets and other moving parts to achieve energy conversion or transmission. They play an important role in many aspects with their unique performance advantages:

1. High efficiency and energy saving: Permanent magnet motors use high-performance permanent magnet materials, such as neodymium iron boron, which can generate a strong magnetic field in a smaller volume. This makes permanent magnet motors have higher power density and efficiency, usually more than 10% higher than traditional induction motors. In today's increasingly tight energy situation, the high efficiency and energy saving characteristics of permanent magnet motors are particularly important.

2. Smooth operation: The rotor of the permanent magnet motor is composed of permanent magnets and does not require an excitation winding, so no electromagnetic interference is generated during operation. This makes the permanent magnet motor smoother during startup and operation, reduces mechanical vibration and noise, and increases the service life of the equipment and the comfort of the working environment.

3. Low maintenance cost: Since permanent magnet motors have no excitation windings and do not have wearing parts such as brushes and slip rings, the maintenance cost is greatly reduced. At the same time, the structure of permanent magnet motors is relatively simple and the failure rate is low, which further extends the service life of the equipment.

5. Fast response speed: Permanent magnet motors have a high dynamic response speed, can start and stop quickly in a short time, and adapt to various complex working environments. This has significant advantages for industrial applications that require frequent start and stop or precise control.

Application cases

1. Permanent magnetic chuck: Permanent magnetic chuck is an important device in magnetic machinery. It uses the magnetic force of permanent magnets to clamp workpieces and realize rapid clamping and positioning of workpieces. Rare earth permanent magnetic materials have a higher clamping force and higher stability due to their high magnetic energy product and high intrinsic coercive force.

2. Magnetic separator: Magnetic separator is a device that uses magnetic field to separate magnetic materials. The high magnetic energy product of rare earth permanent magnetic materials enables the magnetic separator to generate a stronger magnetic field, thereby more effectively separating magnetic materials and non-magnetic materials.

3. Magnetic coupling transmission device: Magnetic coupling transmission device is a device that uses magnetic force for non-contact transmission. The high coercive force and high magnetic energy product of rare earth permanent magnetic materials make magnetic coupling transmission devices have higher transmission efficiency and longer service life.

4. Magnetic bearing: Magnetic bearing is a bearing that uses magnetic force for support and positioning. The high magnetic energy product and high intrinsic coercive force of rare earth permanent magnetic materials make magnetic bearings have higher load-bearing capacity and better stability.

5. Textile machinery and printing machinery: In traditional industrial fields such as textile machinery and printing machinery, permanent magnet synchronous motors have gradually replaced traditional AC motors. Its high-precision control and stability provide better control effects and production efficiency for textile machinery and printing machinery.