Neodymium Hast Magnets

Neodymium Hast Magnets, Neodymium High temperature Magnets.

Hast Magnets are usually applied to Motor, Wind turbine , Rotor , Magnetic couplers, Hydraulic System, ect in industrial field.

Unlike traditioinal sinter neodymium magnets, Hast neodymium magnets can keep less weightlessness value and excellent anticorrosion than common neodymium magnets.

Hast Testing Conditon:
Test atmosphere:3atm
Test humidity:95%
Test temperature:130°C
Test time:168Hours
Weight Loss:<2mg/cm2

Sintered Neodymium earth magnets have excellent magnetic properties,but its corrosion resistance is poor,which greatly limits its application scope.Therefore, how to improve the corrosion resistance become an important problem more and more!

The corrosion of neodymium magnets comes from two aspects: one is the oxidation corrosion; another is electrochemical corrosion.We usually adopt the former to accelerate the corrosion process to get the corrosion rate ,then adjust the manufacturing process.

Hast Magnets for Motor/Rotor – Magnetic technology for the motor / Rotor / VCM market delivers the ability to push the limits on miniaturization, efficiency and performance. our customers wish to achieve extreme performance in devices such as a wire bonding machines and missile guidance systems. Our customers challenge us to design motors and actuators with features such as:
High force to mass ratio
High speed moving coil designs
Harsh environment withstand capability

The types of motor using permanent magnet such as :
DC motor magnets
Brushless motor magnets
Servo motor magnets
Stepper motor magnets
Linear motor magnets
PM motor magnets
Irregular motor magnets
Automobile motor magnets /Car motor magnets
High performance actuator and motor design requires the use of materials that push the limits of material science. Magnet material selection is critical and we can assist in the selection of the best material. Tradeoffs in the selection include temperature, residual induction, coercivity and environment.

Neodymium Hast Magnets

Neodymium Magnets used in Magnetic Motor Applications

Neodymium magnets are also used in electric car motor applications. From the motor that spins a DVD disc to the wheels of a hybrid car, neodymium magnets are used throughout the vehicle. The decision between Samarium Cobalt or Neodymium as a vehicle magnet is usually based on either operating temperature and/or corrosion resistance.

Operating temperature: A low coercivity grade Neodymium magnet may begin to lose strength if heated above 176°F (80°C). High coercivity grade Neodymium Magnets have been developed to function at temperatures up to 428°F (220°C) with little irreversible loss. The need for low temperature coefficient in neodymium magnet applications has triggered several grades to be developed to meet specific operating requirements. Please refer to our chart of magnetic properties to compare the characteristics of each grade.

Corrosion: Neodymium magnets are vulnerable to corrosion, especially along grain boundaries of a sintered magnet. This type of corrosion can cause serious deterioration, including crumbling of a magnet into a powder of small magnetic particles. This vulnerability is addressed by adding a protective coating to prevent exposure to the atmosphere. Nickel plating or two-layered copper-nickel plating are the standard methods, although plating with other metals or polymer and lacquer protective coatings are also available.

Application :

Hast Magnets for Synchronous Motor: