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Method for producing magnetic core material good in performance

The technology of a magnetic core material and a production method is applied in the field of magnetic core material production with good performance, which can solve the problems of poor magnetic core mechanical properties, poor weather resistance, magnetic instability, etc., so as to improve the mechanical properties and reduce the porosity. , the effect of magnetic stabilization

Inactive Publication Date: 2018-05-25
贵州博裕电子科技有限公司
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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: 15kg of boron trioxide, 15kg of manganese oxide, 6kg of calcium oxide, 3kg of strontium, 10kg of graphite powder, 4kg of sodium molybdate, 1.5kg of rare earth, 10kg of carbon powder and 10kg of molybdenum trioxide.

[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: 18kg of boron trioxide, 18kg of manganese oxide, 7kg of calcium oxide, 5kg of strontium, 13kg of graphite powder, 6kg of sodium molybdate, 2kg of rare earth, 13kg of carbon powder and 13kg of molybdenum trioxide.

[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: 12kg of boron trioxide, 12kg of manganese oxide, 5kg of calcium oxide, 3kg of strontium, 7kg of graphite powder, 3kg of sodium molybdate, 1kg of rare earth, 7kg of carbon powder and 7kg of molybdenum trioxide.

[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 method for producing a magnetic core material good in performance. The magnetic core material is mainly prepared from diboron trioxide, manganese oxide, calcium oxide, strontium, graphite powder, sodium molybdate, rare earth, carbon powder and molybdenum trioxide. The magnetic core material prepared by the method is good in weather resistance, high in magnetic energy product and stable in magnetic property, and can obviously improve the mechanical properties of the magnetic core material and reduce the porosity.

Description

technical field [0001] The invention relates to a manufacturing method of a magnetic core material, in particular to a manufacturing method of a magnetic core material 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 core. High po...

Claims

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Application Information

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IPC IPC(8): H01F1/09H01F41/02C22C29/00
CPCH01F1/09C22C29/00H01F41/0246
Inventor 孙爱平
Owner 贵州博裕电子科技有限公司