Mould for molding super-thin soft ferrite magnetic core

Abstract

The invention discloses a mould for molding a super-thin soft ferrite magnetic core, comprising a case mould which is provided with a nib. The mould is characterized in that the edge of the nib is provided with a material spraying slot; by adopting the invention, powder at a higher density part in molding process can be sprayed out by the material spraying slot, thereby ensuring uniform density of each part when molding above products, avoiding or maximally reducing poor buckling deformation generated by density difference, thus reaching the purpose of massively producing super-thin soft ferrite magnetic core with the height less than 0.5mm. The mould has simple design, does not change original operation mode, has no need of specifically training operating personnel and does not increase manufacturing cost.

Description

technical field [0001] The invention relates to a die design for stamping and forming of a soft magnetic ferrite core, which belongs to the technical field of stamping and forming of ceramic material powder metallurgy. Background technique [0002] At present, the magnetic core molding process of the soft ferrite industry adopts powder molding technology, because the products are ultra-thin and irregular in shape (such as figure 2 As shown), when the traditional design of the mold is formed, the powder is filled with a flat surface of the female mold. When the upper mold is pressed down, although the powder tends to move from high density to low density, because the product is very thin, the movement The time is very short, the space is small, and the molded product will cause a large density difference. Due to the density difference, the product will have a poor shrinkage rate during sintering. Because the shrinkage rate of each part of the product is different, the sintere...

AI Technical Summary

Problems solved by technology

[0002] At present, the magnetic core molding process of the soft ferrite industry adopts powder molding technology, because the products are ultra-thin and irregular in shape (such as figure 2 As shown), when the traditional design of the mold is formed, the powder is filled with a flat surface of the female mold. When the upper mold is pressed down, although the powder tends to move from high density to low density, because the product is very thin, the movement The time is very short, the space is small, and the molded product will cause a large density difference. Due to the density difference, the product will have a poor shrinkage rate during sintering. Because the shrinkage rate of each part of the product is different, the sintered product will warp and deform. , which affects the quality of the product or even cannot be used

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