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| DOI： |
| KeyWord:Magnetic arch Magnetic field distri bution Pressi ng magnetic field Mould design Pressing method, |
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| Abstract: |
| Magnetic arch is o ne of the ma i n products of ferrite permanent materials which are widely used in many fields. In the course of pressing magnet-ic field, the normal production of mag netic arch is often i nfluenced by the com-pact cracking and inhomogeneous distribution of density,In this paper,the reason of compact cracki ng a nd inhomogeneous distri bution of densit y is discussed in two aspect (i.e. magnetic field strength distribution a nd magnetic powder filled in the die).It has been put forward usi ng the structure of floati ng i nner upper pu nch, changi ng pressing method and addi ng the no n-magnet-condu cti ng material n the surface of the upper pu nch. The results i ndicated that the compact den-sity is well-distributed and the cracks are removed. |
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