Quality control plays an essential role in magnet manufacturing. Advanced measuring instruments are used to test the magnetic field strength, coercivity, remanence, and maximum energy product. These parameters are crucial in determining whether the magnet will perform as expected in its intended application. Non-destructive testing methods such as magnetic flux mapping, X-ray diffraction, and electron microscopy are also employed to detect internal flaws and inconsistencies. Only magnets that pass stringent quality checks are approved for shipment to customers.

The manufacture of magnets also varies depending on the type of magnet being produced. For example, ferrite magnets, which are made from iron oxide and strontium or barium carbonate, follow a slightly different process that includes calcining the raw materials, pressing them into shapes, and firing them in kilns. Ferrite magnets are inexpensive, corrosion-resistant, and widely used in motors and loudspeakers. On the other hand, alnico magnets are produced through casting or sintering and are known for their high temperature stability and resistance to demagnetization, making them ideal for sensor applications.

Bonded magnets are another category Metal Separation  that involves mixing magnetic powder with a binder such as plastic or resin. This mixture is then injection-molded or compression-molded into the desired shape. Bonded magnets offer flexibility in design, as they can be made in complex geometries that are difficult to achieve with sintered magnets. While they are generally weaker than sintered magnets, they are often used in small electric motors, automotive components, and magnetic sensors.

The growing demand for magnets in various industries has also led to innovations in manufacturing technologies. Additive manufacturing, or 3D printing, is beginning to play a role in magnet production, especially for customized or small-batch components. Researchers are exploring ways to print magnetic materials with specific properties layer by layer, reducing waste and enabling new design possibilities. Additionally, automation and robotics are being increasingly used in magnet manufacturing plants to improve efficiency, accuracy, and safety.