Method, device and product for tape-casting and oriented molding of a circular magnetic sheet

Abstract

The invention discloses a tape casting orientation forming device for a circular magnetic sheet, which comprises a base, a driving motor, a slurry conduit, a driving shaft, a circular turntable, a card slot, and a permanent magnet; the permanent magnet is arranged on the card In the groove, the card slot and the circular turntable all rotate with the drive shaft, and the centers of the drive shaft, the circular turntable, the card slot and the permanent magnet are on the same straight line; the circular turntable is made of magnetically conductive material; the slurry The outlet of the material conduit guides the magnetic slurry into the center of the circle, and the slurry rotates with the circular turntable and expands around. The invention discloses a flow-casting orientation molding method using the device, and the prepared circular magnetic sheet. The present invention improves the preparation device and process synchronously, uses permanent magnets instead of electromagnets, greatly reduces the volume and power consumption of the equipment, utilizes the interaction between the static magnetic field and the centrifugal force, and quickly completes the orientation of the magnetic filler during the rotation of the slurry. fixed, all point to the center of the magnetic sheet, and the prepared magnetic sheet material has high comprehensive performance.

Description

technical field [0001] The invention relates to the technical field of magnetic material manufacturing, in particular to a method, a device and a product for tape casting and orientation molding of a circular magnetic sheet. Background technique [0002] Magnetic anisotropy can be achieved by molding magnetic materials in a magnetic field, resulting in improved performance. Magnetic materials such as ferrite are formed by magnetic field orientation during molding, and after sintering, the crystal orientation of the grains is more ordered, so that they have stronger magnetic anisotropy. Anisotropy enhancement can greatly improve the performance of ferrite materials. For example, strontium ferrite generally adopts the method of applying a magnetic field during the compression molding process. The application method is to use the mode of the mold to coat the coil, and the magnetic field is generated by the current. The direction of the magnetic field is perpendicular to the ...

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Problems solved by technology

[0005] The object of the present invention is to provide a method and device for tape-casting and oriented molding of circular magnetic sheets in view of the problems of the above-mentioned molding equipment, such as complex structure, large size, heavy weight, high power consumption, unfixed orientation direction, and uneven distribution of magnetic materials. And products, by synchronously improving the preparation process and equipment, greatly reducing the volume and power consumption of the equipment, using permanent magnets instead of electromagnets, using the static magnetic field formed by the permanent magnet at the center of the circle to interact with the centrifugal force of the disc, during the rotation of the slurry Quickly complete the orientation of the magnetic filler, the consistency of the distribution of the magnetic powder everywhere, the orientation is fixed, and all point to the center of the magnetic sheet

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