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Method for reducing shrinkage coefficient of permanent magnetic ferrite magnet
The invention discloses a method for reducing the shrinkage coefficient of a permanent magnetic ferrite magnet, which belongs to the technical field of magnetic materials, and comprises the following steps: selecting a pre-sintered material, ball-milling, molding, sintering and grinding, adding iron powder (Fe2O3) and sodium carbonate (NaCO3) as additives in the ball-milling step, and reducing the shrinkage coefficient of the obtained permanent magnetic ferrite magnet by 0.01-0.03 (1%-3%). According to the invention, the shrinkage coefficient of the permanent magnetic ferrite material is reduced, so that one die can be used for various products, the number of manufactured dies is reduced, and the cost is reduced; and Fe2O3 is a magnetic substance, has high magnetic moment, and can effectively improve the magnetic performance parameter as an additive, so that the performance of a product prepared from the pre-sintered material with the same performance mark is higher, the product benefit is improved, and more user requirements can be met.
本发明公开了一种降低永磁铁氧体磁体收缩系数的方法，属于磁性材料技术领域，步骤包括选用预烧料、球磨、成型、烧结以及磨加工，在球磨步骤中加入铁粉（Fe2O3）和碳酸钠（NaCO3）作为添加剂，所得永磁铁氧体磁体的收缩系数降低0.01～0.03（1%～3%）。本发明降低了永磁铁氧体材料的收缩系数，可使一件模具供多种产品使用，节省了制模数量，降低了成本；并且Fe2O3为磁性物质，磁矩高，作为添加剂能有效提高磁性能参数，使得同一性能牌号的预烧料制得的产品性能更高，提高了产品效益，能满足更多用户需求。
Method for reducing shrinkage coefficient of permanent magnetic ferrite magnet
The invention discloses a method for reducing the shrinkage coefficient of a permanent magnetic ferrite magnet, which belongs to the technical field of magnetic materials, and comprises the following steps: selecting a pre-sintered material, ball-milling, molding, sintering and grinding, adding iron powder (Fe2O3) and sodium carbonate (NaCO3) as additives in the ball-milling step, and reducing the shrinkage coefficient of the obtained permanent magnetic ferrite magnet by 0.01-0.03 (1%-3%). According to the invention, the shrinkage coefficient of the permanent magnetic ferrite material is reduced, so that one die can be used for various products, the number of manufactured dies is reduced, and the cost is reduced; and Fe2O3 is a magnetic substance, has high magnetic moment, and can effectively improve the magnetic performance parameter as an additive, so that the performance of a product prepared from the pre-sintered material with the same performance mark is higher, the product benefit is improved, and more user requirements can be met.
本发明公开了一种降低永磁铁氧体磁体收缩系数的方法，属于磁性材料技术领域，步骤包括选用预烧料、球磨、成型、烧结以及磨加工，在球磨步骤中加入铁粉（Fe2O3）和碳酸钠（NaCO3）作为添加剂，所得永磁铁氧体磁体的收缩系数降低0.01～0.03（1%～3%）。本发明降低了永磁铁氧体材料的收缩系数，可使一件模具供多种产品使用，节省了制模数量，降低了成本；并且Fe2O3为磁性物质，磁矩高，作为添加剂能有效提高磁性能参数，使得同一性能牌号的预烧料制得的产品性能更高，提高了产品效益，能满足更多用户需求。
Method for reducing shrinkage coefficient of permanent magnetic ferrite magnet
一种降低永磁铁氧体磁体收缩系数的方法
CHEN HUIYA (author) / WU XINXIN (author) / WANG JIFEI (author) / ZHU RIHONG (author) / CHEN SHUSONG (author)
2024-11-29
Patent
Electronic Resource
Chinese
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