The present invention relates to magnetic material preparation technology, specifically to a method for preparing complex irregularly shaped gradient magnets. The method includes steps such as preparing printing filament, weighing a predetermined amount of magnetic powder and binder to form a mixed powder, ball milling the mixed powder and compounding it to extrude filament, and printing the magnet. This invention utilizes 3D printing technology to achieve efficient, low-cost fabrication of complex gradient magnets. It improves the printing nozzle device to enable precise material proportioning, meeting the requirements for gradient magnet production. After thorough mixing, the material reaches a molten state at the melting point of the nylon binder, enabling extrusion molding that meets 3D printing requirements. The mixed powder is extruded into filament by a twin-screw extruder, connected to the printer nozzle for extrusion molding. Additionally, magnetic powder and nylon powder are dynamically added according to the magnetic field requirements of the gradient magnet. Finally, 3D printing parameters are adjusted to complete the layer-by-layer printing of the gradient magnet.
Country Code: CN
Application Number: CN202111137853.6
