A kind of manufacture method of heterosexual rubber magnetic powder

A manufacturing method and rubber magnet technology, applied in the direction of inductance/transformer/magnet manufacturing, magnetic materials, magnetic objects, etc., can solve problems such as difficulty in upper rolling, and achieve the solution of difficulty in upper rolling, poor processability, and good processability Effect

Active Publication Date: 2012-02-22
FOSHAN CITY BALING ELECTRIC MOTOR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a manufacturing method of heterosexual rubber magnetic powder; Difficulty in upper roll

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] Embodiment: the manufacture method of heterosexual rubber magnetic powder, the steps are as follows:

[0022] (1) Mixing, mixing, adding co-solvent, pelletizing;

[0023] With molecular formula SrO·nFe 2 o 3 Strontium ferrite, the main raw material is: Fe 2 o 3 , purity greater than 98%, containing SiO 2 0.04~0.20%; SrCO 3 , purity greater than 97%; additive: 0.1 ~ 0.7wt% CaCO 3 (Industrial pure), wherein the molar ratio n=5.6~6.2; if n=5.8, according to SrO 6.0 Fe 2 o 3 Weigh raw material Fe 2 o 3 and SrCO 3 Mix in a high-speed mixer while adding co-solvent SrCl 2 ·6H 2 O 4 ~ 8%, and then pelletizing, the particle size of the ball is roughly 5mm ~ 8mm and transported to the kiln head of the rotary kiln through the conveyor belt;

[0024] (2) Sintering and heat preservation for 1 to 3 hours;

[0025] The above-mentioned pre-fired materials are transported to the rotary kiln, sintered, and kept at a temperature of 1090-1100°C for 1-3 hours, and then out of...

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PUM

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Abstract

The present invention relates to a kind of manufacturing method of heterosexual rubber magnetic powder, according to the following steps: (1) the molar ratio of each raw material satisfies the molecular formula SrO nFe2O3; (2) mixing materials; Burning; (4) Mixing and fine grinding; (5) Tempering; (6) Washing treatment; (7) Drying, crushing, sieving, and finished product; wherein, the molar ratio of the main raw materials satisfies the molecular formula SrO·nFe2O3. In addition, the best sintering temperature A of SrO·nFe2O3 strontium ferrite: 1090°C-1100°C, heat preservation for 1-2 hours, and the sintering temperature B: 1065-1075°C. The manufacturing method of the heterosexual rubber magnetic powder of the present invention can significantly improve the performance of the magnetic powder and the particle size of the finished product, so as to improve the physical properties of the rolled sheet and solve the problem of difficult upper roll during subsequent processing.

Description

technical field [0001] The present invention relates to a manufacturing method of heterosexual rubber magnetic powder; it changes the particle size distribution of magnetic powder through sintering and fine grinding, realizes high remanence (Br) and high coercive force (Hcj) of heterosexual rubber magnetic powder, and facilitates rolling of rubber magnetic powder Production. Background technique [0002] The performance of the rubber magnetic sheet mainly depends on the performance of the magnetic powder. In the process of being used for processing into magnetic devices, the performance requirements of the magnetic powder are not only high, but also the processing technology is also very important; the difficulty of processing has a very important relationship with the particle size of the magnetic powder. The magnetic powder has a large particle size and good processability; the opposite is true. [0003] At present, after the wet mixing of the traditional technology, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/00H01F1/10H01F41/00C04B35/26C04B35/622
Inventor 陈国权邰文雷海军欧阳池培
Owner FOSHAN CITY BALING ELECTRIC MOTOR
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