NdFeB magnets are mainly produced using a process called powder metallurgy. First, the raw materials—neodymium, iron, and boron—are melted together and then cooled into an alloy. This alloy is crushed into a fine powder, which is then pressed into a mold under high pressure.
What are the manufacturing processes of NdFeB magnets?
NdFeB magnets are mainly produced using a process called powder metallurgy. First, the raw materials—neodymium, iron, and boron—are melted together and then cooled into an alloy. This alloy is crushed into a fine powder, which is then pressed into a mold under high pressure. While still in the mold, the powder is magnetically aligned to maximize magnetic performance. The pressed shape is then sintered (heated at high temperature) to bond the particles together, creating a solid magnet. After sintering, the magnets are machined to their final size and coated for protection. This method is known as sintered NdFeB. There are also bonded NdFeB magnets, which use a different process, mixing the powder with resin or plastic.
