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Processing method for improving mechanical strength of magnetic tile

A technology of mechanical strength and processing method, applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve the problems of ferrite sintered magnetic rings and magnetic blocks, which are difficult to survive, prolong the production cycle, and are prone to damage. To achieve the effect of improving the anisotropy constant of magnetocrystalline, increasing the magnetization, and improving the comprehensive mechanical properties

Active Publication Date: 2017-11-07
马鞍山起劲磁塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As an important part of ferrite sintered magnets, magnetic tiles have excellent market prospects because they are widely used in the field of motors. In addition, the excessive vicious competition in loudspeaker magnetic rings and magnetic blocks at home and abroad in recent years has made ferrite The survival of ferrite sintered magnetic rings and magnetic blocks is becoming more and more difficult, so magnetic tiles have always been favored by the domestic ferrite magnetic material industry. The requirements are relatively high, so many manufacturers who produce magnetic rings are unable to produce magnetic tiles. During grinding, the mechanical strength and shrinkage of the material are usually affected by changes in raw materials, additives, and production process conditions, resulting in magnetic tiles after sintering. Stress concentration is prone to breakage, resulting in waste of materials and prolonging the production cycle. Therefore, further research and improvement on how to prepare magnetic tiles with good mechanical strength is needed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A processing method for improving the mechanical strength of magnetic tiles. After preparing pre-sintered material A and pre-sintered material B, they are mixed with ingredients and then ball-milled. The green body is pressed in a magnetic field. After the green body is sintered into a sintered magnet, it is ground, cleaned, and The finished product is detected, including the following:

[0017] (1) Preparation of calcined material A: Fe 2 o 3 、Sr 2 o 3 , ZrO 2 、WO 3 , V 2 o 5 Mix according to the weight ratio of 148:15:1.6:1.4:0.8, mix with a ball mill, the weight ratio of material: ball: water is 1:10:2, the ball diameter is 6mm, the speed is 380 rpm, ball mill 4-6 hours, and then pre-fired in the air, the pre-fired temperature is 1300-1400 ° C, the holding time is 1.5-2.5 hours, coarse grinding and then fine grinding, to obtain a powder with a particle size of 60-300nm, which is calcined material A ;

[0018] The physical and chemical index of iron red is Fe...

Embodiment 2

[0026] A processing method for improving the mechanical strength of magnetic tiles. After preparing pre-sintered material A and pre-sintered material B, they are mixed with ingredients and then ball-milled. The green body is pressed in a magnetic field. After the green body is sintered into a sintered magnet, it is ground, cleaned, and The finished product is detected, including the following:

[0027] (1) Preparation of calcined material A: Fe 2 o 3 、Sr 2 o 3 , ZrO 2 、WO 3 , V 2 o 5 Mix according to the weight ratio of 147:15:2:1:1, mix with a ball mill, the weight ratio of material: ball: water is 1:10:2, the ball diameter is 6mm, the speed is 380 rpm, ball mill 4-6 hours, and then pre-fired in the air, the pre-fired temperature is 1300-1400 ° C, the holding time is 1.5-2.5 hours, coarse grinding and then fine grinding, to obtain a powder with a particle size of 60-300nm, which is calcined material A ;

[0028] The physical and chemical index of iron red is Fe 2 o ...

Embodiment 3

[0036] A processing method for improving the mechanical strength of magnetic tiles. After preparing pre-sintered material A and pre-sintered material B, they are mixed with ingredients and then ball-milled. The green body is pressed in a magnetic field. After the green body is sintered into a sintered magnet, it is ground, cleaned, and The finished product is detected, including the following:

[0037] (1) Preparation of calcined material A: Fe 2 o 3 、Sr 2 o 3 , ZrO 2 、WO 3 , V 2 o 5 Mix according to the weight ratio of 150:14:2:2:0.5, mix with a ball mill, the weight ratio of material: ball: water is 1:10:2, the ball diameter is 6mm, the speed is 380 rpm, ball mill 4-6 hours, and then pre-fired in the air, the pre-fired temperature is 1300-1400 ° C, the holding time is 1.5-2.5 hours, coarse grinding and then fine grinding, to obtain a powder with a particle size of 60-300nm, which is calcined material A ;

[0038] The physical and chemical index of iron red is Fe 2 ...

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Abstract

The invention belongs to the technical field of permanent magnetic ferrite magnetic tile processing, and particularly relates to a processing method for improving the mechanical strength of a magnetic tile. The processing method comprises: preparing a pre-firing material A and a pre-firing material B, mixing the pre-firing material A, the pre-firing material B and ingredients, carrying out ball milling, pressing in a magnetic field to obtain a billet, sintering the billet to obtain a sintered magnet, carrying out grinding processing, washing, and testing to obtain the finished product. Compared to the processing method in the prior art, the processing method of the present invention has the following advantages that the raw materials having different properties are respectively mixed and pre-sintered, the corresponding ball milling process and the corresponding sintering parameters are controlled, the corresponding crystal micro-structure is formed, the active complex is easily formed so as to reduce the activation energy, the density of the obtained magnetic tile after the sintering achieves more than 5.4 g / cm<3>, the mechanical strength and the tensile strength reach high levels, the orientation degree of the magnetic tile reaches more than 98.6%, and the magnetic tile has advantages of high residual magnetic flux density, high intrinsic coercive force, and significantly improved comprehensive mechanical performance.

Description

technical field [0001] The invention belongs to the technical field of processing permanent magnet ferrite magnetic tiles, and in particular relates to a processing method for improving the mechanical strength of magnetic tiles. Background technique [0002] As an important part of ferrite sintered magnets, magnetic tiles have excellent market prospects because they are widely used in the field of motors. In addition, the excessive vicious competition in loudspeaker magnetic rings and magnetic blocks at home and abroad in recent years has made ferrite The survival of ferrite sintered magnetic rings and magnetic blocks is becoming more and more difficult, so magnetic tiles have always been favored by the domestic ferrite magnetic material industry. The requirements are relatively high, so many manufacturers who produce magnetic rings are unable to produce magnetic tiles. During grinding, the mechanical strength and shrinkage of the material are usually affected by changes in ...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/64C04B35/626H01F41/02
CPCC04B35/2683C04B35/6261C04B35/64C04B2235/3213C04B2235/3239C04B2235/3244C04B2235/3258C04B2235/3286C04B2235/3287C04B2235/608C04B2235/661C04B2235/77C04B2235/96H01F41/0253H01F41/0266
Inventor 周国胜
Owner 马鞍山起劲磁塑科技有限公司