Anti-interference and high-voltage-resistant magnetic core material and preparation method thereof

A magnetic core material and high-voltage-resistant technology, applied in the direction of inductance/transformer/magnet manufacturing, inorganic material magnetism, electrical components, etc., can solve the problems of micro-cracks, cracks, and core preheating, etc., to improve The effects of anti-interference and high voltage resistance and stability, improved voltage resistance, and stable insulation resistance

Pending Publication Date: 2022-02-08

江西瑞吉磁电子科技有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0002] Ferrite is widely used in magnetic cores and circuit boards. The ratio of ferrite materials plays a decisive role in the mechanical properties of molded parts. Taking the magnetic core as an example, the magnetic core made of existing materials on the market The withstand voltage can only reach 2000V, so it cannot meet the requirements for use in ultra-high voltage circuits. Secondly, its insulation resistance is generally 50MΩ-100MΩ. This index is very unstable and is extremely dangerous in ultra-high voltage transmission. In addition, i...

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Abstract

The invention relates to an anti-interference and high-voltage-resistant magnetic core material, which comprises the following raw materials in parts by weight: 66-68 parts of ferric oxide, 16.5-17.5 parts of zinc oxide, 4.5-5.5 parts of copper oxide, 5-6 parts of magnesium oxide, 3-4 parts of nickel oxide and 1.5-2.5 parts of manganous-manganic oxide. When in use, the high-voltage-resistant capacity of the magnetic core prepared by the materials mentioned above is improved by more than 50%, the insulation resistance is stably higher than 100 M[omega], the weldable temperature (soldering) is improved by 15%, and the anti-interference and high-voltage-resistant characteristics and stability of the magnetic core can be effectively improved by adopting the proportion of the components in the scheme.

Application Domain

Inorganic material magnetismInductances/transformers/magnets manufacture

Technology Topic

Insulation resistanceMagnetic core +8

Examples

Experimental program(3)

Example Embodiment

[0024] Example 1:

[0025] An anti-interference, high pressure resistance core material, including trioxide, zinc oxide, copper oxide, magnesium oxide, nickel oxide, and triioxide.

[0026] A anti-interference, high pressure resistant magnetic core: according to the above weight parts, 66.9 parts of the two iron oxide, 16.8 parts of zinc oxide, 5.8 copper oxide, 5.5 parts of magnesium oxide, 3.5 parts of nickel oxide and three oxide 1.7 parts, mixed with ball mill, resulting in a mixed powder, adding a planetary ball mill, performing grinding, obtained powder, initial burning removing the impurities in the powder, fine milling of the grinding machine, obtaining a particle diameter of not more than 0.01 mm, after spray granulation And press molding, specific steps:

[0027] S1: Weighing powder: Take 66.9 parts of the above weight parts, 16.8 parts of zinc oxide, 5.3 copper oxide, 5.5 parts of magnesium oxide, and nickel oxide, and 1.7 parts, mixed with spherical mills. The mixed powder is obtained, and the purity of the ferric dioxide is not less than 99.3%. The purity of zinc oxide is not less than 99.7%, and the purity of copper oxide is not less than 99%. The magnesium oxide purity is not less than 93%, and nickel oxide purity is not less than 97. %, The tetraoxide purity is not less than 98%.

[0028] S2: Initial Burn: Place the mixed powder into the kiln in the kiln, the initial burning temperature is 990-1010 ° C, more specifically, the initial burning temperature is 1000 ° C.

[0029] S3: Grinding: Place the intermediate product into the grinder, which is ground, and the particle diameter is not more than 0.01 mm.

[0030] S4: Spray granulation: The product obtained by S3 is spray granulation, and the particle diameter of the preparation of the particles is 0.01-0.1 mm by centrifugal spray drying machine.

[0031] S5: Forming: The particles are suppressed by the powder pressing machine to form the desired hairy embryo.

[0032] S6: Cut: Cutting the blank to obtain a "work" font magnetic core, which uses high-speed cutting processing.

[0033] S7: Sintering: Sintering on the hungee, the sintering temperature is controlled at 1100-1200 ° C, and the length is 150-200 min, more specifically, the sintering temperature of 1160 ° C, the holding time of 180 min.

[0034] S8: Test: Test the magnetic core, the detection value includes a pressure-resistant value, an insulating resistor, wherein the pressure resistance is 2800-3200V, and the insulating resistance is stabilized at 100mΩ or more.

[0035] S9: Packing: Pack the test qualified product.

Example Embodiment

[0036] Example 2:

[0037] An anti-interference, high pressure resistance core material, including trioxide, zinc oxide, copper oxide, magnesium oxide, nickel oxide, and triioxide.

[0038] An anti-interference, high pressure resistant magnetic core: 166 parts of the above weight parts, 16.5 parts of zinc oxide, 4.5 copper oxide, 5 corrupted copper oxide, 3 parts of nickel oxide and three oxide 1.5 parts, mixed with ball milling, gave a mixed powder, add a planetary ball mill, carrying the abrasive, the powder, the initial burning removal of impurities in the powder, fine milling of the grinding machine, to obtain a particle diameter of not more than 0.01 mm, after spray granulation And press molding, specific steps:

[0039] S1: Tighted powder: According to the above weight parts, 66 pieces of ferric dioxide, 16.5 parts of zinc oxide, 4.5 copper oxide, 5 parts of magnesium oxide, 3 parts of nickel oxide, and mixed with trioxide, mixed with ball mills, The mixed powder is obtained, and the purity of the ferric dioxide is not less than 99.3%. The purity of zinc oxide is not less than 99.7%, and the purity of copper oxide is not less than 99%. The magnesium oxide purity is not less than 93%, and nickel oxide purity is not less than 97. %, The tetraoxide purity is not less than 98%.

[0040] S2: Initial Burn: Place the mixed powder into the kiln in the kiln, the initial burning temperature is 990-1010 ° C, more specifically, the initial burning temperature is 1000 ° C.

[0041] S3: Grinding: Place the intermediate product into the grinder, which is ground, and the particle diameter is not more than 0.01 mm.

[0042] S4: Spray granulation: The product obtained by S3 is spray granulation, and the particle diameter of the preparation of the particles is 0.01-0.1 mm by centrifugal spray drying machine.

[0043] S5: Forming: The particles are suppressed by the powder pressing machine to form the desired hairy embryo.

[0044] S6: Cut: Cutting the blank to obtain a "work" font magnetic core, which uses high-speed cutting processing.

[0045] S7: Sintering: Sintering on the hungee, the sintering temperature is controlled at 1100-1200 ° C, and the length is 150-200 min, more specifically, the sintering temperature of 1160 ° C, the holding time of 180 min.

[0046] S8: Test: Test the magnetic core, the detection value includes a pressure-resistant value, an insulative resistor, wherein the pressure resistance is 2500-2800V, the insulation resistance is 70-80mΩ.

Example Embodiment

[0047] Example 3:

[0048] An anti-interference, high pressure resistance core material, including trioxide, zinc oxide, copper oxide, magnesium oxide, nickel oxide, and triioxide.

[0049] An anti-interference, high pressure resistant magnetic core: 48 parts of the above weight parts, 17.5 parts of zinc oxide, 5.5 parts of zinc oxide, 6 copper oxide, 4 parts of nickel oxide and three oxide 2.5 parts, mixed with ball mills, gave a mixed powder, add planetary ball mill, grinding, resulting in powder, initial burning removing the impurities in the powder, fine milling of the grinding machine, to obtain a particle diameter of not more than 0.01 mm, after spray granulation And press molding, specific steps:

[0050] S1: Weigh powder: according to the above weight parts, 68 pieces of ferric dioxide, 17.5 parts of zinc oxide, 5.5 copper oxide, 6 copper oxide, 4 parts of nickel oxide and 2.5 parts of three oxide, mixed with ball mills. The mixed powder is obtained, and the purity of the ferric dioxide is not less than 99.3%. The purity of zinc oxide is not less than 99.7%, and the purity of copper oxide is not less than 99%. The magnesium oxide purity is not less than 93%, and nickel oxide purity is not less than 97. %, The tetraoxide purity is not less than 98%.

[0051] S2: Initial Burn: Place the mixed powder into the kiln in the kiln, the initial burning temperature is 990-1010 ° C, more specifically, the initial burning temperature is 1000 ° C.

[0052] S3: Grinding: Place the intermediate product into the grinder, which is ground, and the particle diameter is not more than 0.01 mm.

[0053] S4: Spray granulation: The product obtained by S3 is spray granulation, and the particle diameter of the preparation of the particles is 0.01-0.1 mm by centrifugal spray drying machine.

[0054] S5: Forming: The particles are suppressed by the powder pressing machine to form the desired hairy embryo.

[0055] S6: Cut: Cutting the blank to obtain a "work" font magnetic core, which uses high-speed cutting processing.

[0056] S7: Sintering: Sintering on the hungee, the sintering temperature is controlled at 1100-1200 ° C, and the length is 150-200 min, more specifically, the sintering temperature of 1160 ° C, the holding time of 180 min.

[0057] S8: Test: Test the magnetic core, the detection value includes a pressure-resistant value, an insulative resistor, wherein the pressure resistance is 2600-2700 V, and the insulation resistance is 60-90 mΩ.

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PUM

Property	Measurement	Unit
Pressure value	2800.0 ~ 3200.0	V
Pressure value	2500.0 ~ 2800.0	V
Insulation resistance	70.0 ~ 80.0	MΩ
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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Classification and recommendation of technical efficacy words

Improve pressure resistance

Anti-interference and high-voltage-resistant magnetic core material and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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