The main components of magnets include atoms such as iron, cobalt, and nickel, which have special internal structures and magnetic moments. In addition, raw materials such as rare earth metals (such as neodymium and praseodymium), pure iron, aluminum, and ferroboron alloys are also used in the manufacturing process of magnets.
Raw Material Preparation: Select high-quality raw materials, including rare earth metals, pure iron, aluminum, and ferroboron alloys, to ensure that the purity and composition of the raw materials meet production requirements.
Alloy Melting: The raw materials are precisely mixed in a pre-set ratio and melted in a high-temperature furnace to form a uniform alloy liquid. The use of a vacuum melting furnace can provide an oxygen-free and impurity-free environment to improve the magnetic properties of the final product.
Molding Process: It includes steps such as casting, sintering, and bonding. Casting is to pour the alloy liquid into a mold preheated to an appropriate temperature, cool and solidify to form a blank; sintering is to press the magnetic powder into a blank and treat it at high temperature to promote particle bonding; bonding is to mix the magnetic powder with an adhesive and form the final product by pressing, extrusion, or injection molding.
Magnets are divided into hard magnetic materials and soft magnetic materials. Hard magnetic materials (permanent magnets) can maintain their magnetism for a long time after magnetization, and are often used in applications that require long-term magnetism, such as speakers, motors, etc.; soft magnetic materials cannot maintain their original magnetism after magnetization, and are often used in electromagnets and transformers, etc.
