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Manufacturing method of wearproof magnet core

A production method and wear-resistant technology, which is applied in the manufacture of inductors/transformers/magnets, the magnetism of inorganic materials, and electrical components, etc., and can solve problems such as magnetic instability, poor mechanical properties of magnetic cores, and high porosity

Inactive Publication Date: 2018-05-25
贵州华磁电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to meet the requirements of miniaturization, low loss, high efficiency and energy saving, many kinds of magnetic core materials have appeared on the market, but the existing magnetic core materials have poor weather resistance, low magnetic energy product, magnetic instability, and poor mechanical properties of the magnetic core. High porosity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Formula: fused magnesia 15kg, manganese oxide 15kg, nickel oxide 6kg, hydroxyl iron powder 3kg, aluminum hydroxide 10kg, sodium silicate 4kg, rare earth 1.5kg, copper powder 10kg and ferrous sulfide 10kg.

[0015] Production method: send the above raw materials into the mixing tank, stir and mix at 2800 rpm for 2.5 hours, send them into the rotary kiln for pre-calcination, pre-calcine at 350-400 ° C for 2.5 hours, send them into the grinding tank, and grind them to a fineness of 70 μm; extrude Add 0.15% isopropyl palmitate and 0.005% calcium propionate, and grind to a fineness of 60 μm; add 4 times the amount of water, 1.5% ammonium fluoroborate, stir and mix at 60-70°C for 25 minutes; spray Drying, pressing into billets, sintering, that is.

Embodiment 2

[0017] Formula: fused magnesia 18kg, manganese oxide 18kg, nickel oxide 7kg, hydroxyl iron powder 5kg, aluminum hydroxide 13kg, sodium silicate 6kg, rare earth 2kg, copper powder 13kg and ferrous sulfide 13kg.

[0018] Production method: send the above raw materials into the mixing tank, stir and mix at 3000 rpm for 3 hours, send them into the rotary kiln for pre-calcination, pre-calcine at 350-400°C for 3 hours, send them into the grinding tank, and grind until the fineness is 60-80 μm ; Squeeze in 0.2% isopropyl palmitate and 0.1% calcium propionate, grind to a fineness of 70 μm; add 5 times the amount of water, 2% ammonium fluoroborate, stir and mix at 70°C for 30 minutes; spray Drying, pressing into billets, sintering, that is.

Embodiment 3

[0020] Formula: fused magnesia 12kg, manganese oxide 12kg, nickel oxide 5kg, hydroxyl iron powder 3kg, aluminum hydroxide 7kg, sodium silicate 3kg, rare earth 1kg, copper powder 7kg and ferrous sulfide 7kg.

[0021] Production method: send the above raw materials into the mixing tank, stir and mix at 2500 rpm for 2 hours, send them into the rotary kiln for pre-sintering, pre-sinter at 350-400°C for 2 hours, send them into the grinding tank, and grind until the fineness is 60-80 μm ; Squeeze in 0.1% isopropyl palmitate and 0.02% calcium propionate, and grind to a fineness of 50-70 μm; add 3 times the amount of water, 1-2% ammonium fluoroborate, at 60-70 ° C Stir and mix for 20 minutes; spray dry, press into billets, and sinter to obtain.

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PUM

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Abstract

The invention discloses a manufacturing method of a wearproof magnet core. The magnet core is mainly prepared from electronically fused magnesite, manganese oxide, nickel oxide, hydroxy iron powder, aluminium hydroxide, sodium silicate, rare earth, copper power and ferrous sulfide. The iron magnet core material prepared according to the method is great in weather fastness, high in magnetic energyproduct and stable in magnetism, the mechanical performance of the iron magnet core material can be obviously improved, and the porosity rate is reduced.

Description

technical field [0001] The invention relates to a method for manufacturing a wear-resistant magnetic core, in particular to a method for manufacturing a wear-resistant magnetic core with good performance. Background technique [0002] Today's world has entered the information age, and various electronic devices are rapidly popularized. Electronic devices have higher and higher requirements for switching power supply technical indicators. Especially favored. In order to adapt to the diversification of electronic equipment and the ever-changing modification situation, switching power supplies are also constantly innovating in technology. [0003] In order to meet the requirements of miniaturization, low loss, high efficiency and energy saving, many kinds of magnetic core materials have appeared on the market, but the existing magnetic core materials have poor weather resistance, low magnetic energy product, magnetic instability, and poor mechanical properties of the magnetic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/09H01F41/02C22C29/00
CPCH01F1/09C22C29/00H01F41/0246
Inventor 杨美华
Owner 贵州华磁电子科技有限公司