injection molded magnets is produced by mixing magnetic powder, resin (PA6, PA12, PPS, etc.), additives and other materials with a special injection molding machine through injection molding. The magnetic force of injection magnet is slightly lower than that of sintered magnet, but it has the advantages of precise size, light weight, thin wall and complex shape. Besides, the magnetic force is stable and can be bonded together with other metal parts to form.
In many precision, lightweight, and performance requirements of electronic products, injection magnetic can meet the requirements. This is difficult to do with sintered magnets. In the process of injection molding, if axial or radial external magnetic field is applied to it, a magnet with higher magnetic properties can be obtained.
injection molded magnets are mainly used for high performance micro motor (stepper motor, brushless motor), automobile motor, copier, laser printer, magnetic sensor, precision instrument, etc.
The figure below shows the process of injection molded magnets and the flow chart of injection molded magnets.