MANUFACTURING METHOD OF COMPOUND FOR ANISOTROPIC RARE EARTH BOND MAGNET

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PROBLEM TO BE SOLVED : To overcome problems with a proposed method for enhancing molding density by mixing a magnetic powder with small particle diameter and a magnetic powder with large particle diameter and filing the mall particle diameter magnetic powder between large particle diameter magnetic powders for development of a bond magnetic having high magnetic property, that dispersibility of magnetic powders having largely different average particle diameters are bad, a rein is not also dispersed and aggregate is easily generated, therefor magnetic body formation density is not increased with the manufactured compound, a molded body with low orientation degree is formed and magnetic property cannot be enhanced. SOLUTION : Orientation degree is increased and a magnetic body with high magnetic property can be obtained because a uniform resin coating can be formed on a surface by making compounds of SmFeN magnetic powder body with small particle diameter and NdFeB magnetic powder body with large magnetic powder body, aggregation is inhibited, coating is not deteriorated, mixing dispersibility of small particle diameter and large particle diameter is enhanced and density of compression molded magnetic is enhanced. SELECTED DRAWING : None COPYRIGHT : (C)2018, JPO&INPIT