Preparation method for rare earth permanent ferrite magnetic shoe and product

A permanent magnet ferrite, magnetic tile technology, applied in the direction of magnetic circuit, manufacture of motor generators, electrical components, etc., can solve the problems of uneven particle size, poor magnetic performance, affecting the quality of magnetic tiles, etc., to improve the degree of magnetic orientation, The effect of improving the magnetic properties
CN101860091AActive Publication Date: 2010-10-13马鞍山市鑫洋永磁有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
马鞍山市鑫洋永磁有限责任公司
Publication Date
2010-10-13

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Abstract

The invention discloses a preparation method for a permanent ferrite magnetic shoe containing a rare earth material and an organic material, and a product. The preparation method comprises the following steps of: treating an iron scale; grinding; oxidizing; primary dosing; mixing; preburning and palletizing; rough grinding; secondary dosing; ultra-fine grinding; slurry precipitation; pressing blanks; sintering; grinding; and warehousing. The preparation method of the invention has the characteristics that: the magnetic orientation degree of crystal grains is improved by adding calcium gluconate and improving a grinding method; and magnetic performance and magnetic characteristics thereof are improved by displacing the components of a conventional strontium ferrite permanent magnet material by adopting an additive mode of secondary dosing. The rare earth permanent ferrite magnetic shoe obtained by the preparation method has the characteristics of high residual magnetic flux density, high intrinsic coercive force and low intrinsic coercive force temperature coefficient.
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Description

technical field

[0001] The invention relates to the technical field of permanent magnet ferrite tiles for micromotors, in particular to a preparation method and products of permanent magnet ferrite tiles added with rare earth materials and organic materials. Background technique

[0002] Permanent magnet ferrite tiles are mainly used in motors in industries such as automobiles, motorcycles, electric bicycles, household appliances, and fitness equipment. In terms of magnetic properties, on the one hand, the magnetic tile must meet the requirements of the motor for permanent magnets, and on the other hand, it must have a corresponding intrinsic coercive force to ensure that the magnet does not undergo irreversible demagnetization under the action of a strong demagnetizing field. Therefore, it is required that the magnetic tile not only has a high residual magnetic flux density, but also has a high intrinsic coercive force. And the composition of existing permanent magnet ferr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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