a zro 2 The manufacturing method of the ferromagnetic core
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A manufacturing method and ferromagnetic core technology, applied in the manufacture of inductors/transformers/magnets, the magnetism of inorganic materials, electrical components, etc., can solve the problems of unsuitable cutting, low mechanical strength of materials, low saturation magnetic induction intensity, etc., and achieve low porosity , small deformation, slight deformation effect
Active Publication Date: 2016-08-24
TIANCHANG CITY ZHAOTIAN MAGNETOELECTRICITY TECH
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The saturation magnetic induction of sendust core is generally about 5000-9000 gauss, and the iron loss is relatively low, but its material mechanical strength is too low; the saturation magnetic induction of ferrite is about 2700-4200 gauss, and the iron loss is quite good , but the saturation magnetic induction is too low, and it is not suitable for cutting
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Embodiment 1
[0013] Embodiment 1: containing ZrO 2 The manufacture method of the ferromagnetic core, comprises the following steps:
[0014] (1) The ratio of raw materials is calculated in parts by weight (catties), reduced iron powder 62, iron oxide powder 11, MnO 2, ZnO 3.8, modified nano-scale titanium dioxide 4.3, ZrO 2 2.9, SiO2 2 2.1, V 2 o 5 3.2 Fe 3 o 4 1.6, the modified nano-scale titanium dioxide is prepared by the following method: adding 1.5% nano-carbon, 1.5% silane coupling agent and 1.5% phthalate and 15% alumina modification to nano-scale titanium dioxide, mixing , dried, crushed into powder;
[0015] (2) Calcination: Add water and dispersant to ball mill the raw materials except modified nano-scale titanium dioxide for 2-2.5 hours, then spray dry and pre-calcine. The pre-calcination temperature is 900-920°C, 1-2 hours;
[0016] (3) Secondary ball milling: add water and dispersant to the primary ball milling material, carry out secondary ball milling for 2-3 hou...
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Abstract
The invention discloses a ZrO2-containing ferromagnetic core manufacturing method, which comprises the following steps of: proportioning 60-65 parts of reduced iron powder by weight, 10-12 parts of oxidized iron powder by weight, 1.8-2.2 parts of MnO by weight, 3.5-4 parts of ZnO by weight, 3.5-5 parts of modified nano-scale titanium dioxide by weight, 2.5-3.3 parts of ZrO2, 1.8-2.3 parts of SiO2 by weight, 2.8-3.5 parts of V2O5 by weight and 1.4-1.8 parts of Fe3O4 by weight, and then sequentially conducting pre-sintering, primary ball milling, secondary ball milling, molding and sintering to obtain a ZrO2-containing ferromagnetic core. The ZrO2-containing ferromagnetic core manufacturing method has the advantages that the magnetic core formula is reasonable, the preparation method is simple, the saturation induction density of the manufactured magnetic core is higher, the loss is lower, the temperature resistance is higher, the added modified nano-scale titanium dioxide can take a bridge bonding effect among different raw materials, the distribution of the used raw materials is better, the density is high, the crystal boundary resistivity is high, the porosity is low, the grains are large and uniform, the cracks are prevented from occurring during sintering, the texture is compact, the deformation is small, the raw material formula is reasonably improved, the deformation degree is small during sintering, and the magnetic core can be machined, wire-cut, cut, ground and the like.
Description
technical field [0001] The invention belongs to powder metallurgy technology, in particular to a 2 The method of manufacturing the ferromagnetic core. Background technique [0002] The saturation magnetic induction of the iron powder magnetic core is generally about 9000-11000 Gauss, and the iron loss is very large in the alternating electric field of 100-2000 Hz. The saturation magnetic induction of sendust core is generally about 5000-9000 Gauss, and the iron loss is relatively low, but the mechanical strength of its material is too low; the saturation magnetic induction of ferrite is about 2700-4200 Gauss, and the iron loss is quite good , but the saturation magnetic induction is too low, and it is not suitable for cutting. Contents of the invention [0003] In order to alleviate the deficiencies and defects of the prior art, the object of the present invention is to provide a method for manufacturing a ferromagnetic core containing ZrO2. [0004] In order to achieve...
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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/09H01F41/02B22F3/16
Inventor 徐杰杨从会黄国祥刘京州曾性儒张忠仁王玉志
Owner TIANCHANG CITY ZHAOTIAN MAGNETOELECTRICITY TECH