Magnet Manufacturing Process
Making magnets takes several processes. However, the most common process for magnet production is known as Powder Metallurgy. This process involves pulverizing the raw materials into fine powder then compacted and heated through liquid phase sintering to achieve densification. Due to that, most of the magnets that are produced through this process is called sintered magnets. Manufacturing magnets usually takes up to 4 to 6 weeks. All the steps in manufacturing the magnets assures the customers with the best quality. Each magnet is composed of different materials. Hence, manufacturing processes are also different from each other.
Sintered magnets undergoes machining processes such as grinding to achieve a smooth and parallel, block magnets, and more. The magnet materials are very hard yet brittle. Therefore, slicing the magnets requires diamond wheels. Slicing process allows to achieve excellent precision while eliminating subsequent grinding requirements. Aside from that, cylindrical magnets can also be pressed-to-shape. This process is usually economical.
To reduce the sharpness, the most common method used is vibratory tumbling. Neodymium magnets are always coated to reduce rusting. The most common coatings that are used are aluminum IVD, e-coat, zinc, iron, dry-sprayed epoxy, and more.
After the magnet production process is completed, it undergoes charging to create an external magnetic field. It is achieved by using solenoid that is a characterized by its hollow cylinder. Therefore, desired shapes and sizes are met. Other fixtures or unique magnet patterns can also be placed in a solenoid to produce magnetic field.
Large magnetic assemblies can also be magnetized using a solenoid to assembling and handling powerful magnets. The magnetizing field process is very substantial. If you need to know more about this process, Dailymag production and engineering team is ready to help you.