| abstract |
The present invention relates to a method for producing a bonded magnet, in particular to a method for producing an anisotropic bonded magnet. Under the condition of heating magnetic powder, the existing manufacturing method solves the problems of low production efficiency, complex mold structure and high process cost, which affect the widespread use of anisotropic bonded magnets, after the binder is melted for magnetic field orientation. The manufacturing method of anisotropic bonded magnet includes the following steps: 1) mixing anisotropic magnetic powder and thermosetting binder; 2) adding the mixture of step 1) into a mold cavity, performing pressure molding under an orientation magnetic field, and then Demagnetize to obtain a green body; 3) put the green body in step 2) into a vacuum furnace for thermal curing; obtain an anisotropic bonded magnet. The invention performs magnetic field molding at normal temperature or cold state, avoids mutual adhesion of magnetic powder particles, improves the magnetic field orientation effect, and has simple mold structure, easy operation, high efficiency, and low cost. |