The present invention aims to provide an anisotropic extruded magnetic strip and a preparation method thereof, comprising the following steps: uniformly mixing raw materials and auxiliary materials by a high-speed mixer; adding the mixture into a hopper of a twin-screw extruder with preheated heating sections; starting the extruder and arranging an orientation magnetic field between the high-temperature zone of the main screw and the die; heating and kneading the mixture by twin screws to convert it into a viscous flow state in the high-temperature zone, and feeding it into the die through the magnetic field orientation section; passing the material through the flow channel in the die for cooling, calendering and slitting, and outputting as magnetic strips through several discharge ports; cooling and magnetizing the magnetic strips to obtain anisotropic extruded magnetic strips. By virtue of kneading and extrusion of twin screws, synergistic plastic deformation occurs between magnetic powders; through the die with calendering and slitting effects, anisotropic extruded magnetic strips with surface magnetic strength greater than 900 Gs can be prepared, realizing multi-product output in one mold.
Country Code: CN
Application Number: CN202410890807.0
