CN103700482B - The preparation method of Fe-Si-B-Cu-Nb-Al-Ni low cost nanocrystalline magnet core for a kind of high-frequency electronic transformer - Google Patents
The preparation method of Fe-Si-B-Cu-Nb-Al-Ni low cost nanocrystalline magnet core for a kind of high-frequency electronic transformer Download PDFInfo
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Abstract
The preparation method who the invention discloses a kind of high-frequency electronic transformer Fe-Si-B-Cu-Nb-Al-Ni low cost nanocrystalline magnet core, its concrete steps are as follows: the annealing of iron-based amorphous thin ribbon vacuum isothermal is made to nano-crystalline thin ribbon; The nano-crystalline thin ribbon making is carried out to fragmentation, obtain nanocrystalline metal powder; Then nanocrystalline metal powder is divided into A, the B material of different equal portions; A material adds γ-(methacryloxypropyl) propyl trimethoxy aluminium alkane and mica powder is processed, and B material is first used triethanolamine processing, then uses aluminium nitride, methenamine and polyvinyl alcohol processing; A material after treatment, B material are mixed, add sodium aluminate aqueous solution, compressing, the magnetic core surface after moulding is applied to magnetic core glue G500, solidify, get product. In magnetic core of the present invention, add the Saturation magnetic sense intensity that Nb is conducive to improve magnetic core, add Al and be conducive to coercitive reduction, can obviously reduce the production cost of FeSiBCuNb magnetic core simultaneously.
Description
Technical field
The present invention relates to the system of a kind of high-frequency electronic transformer Fe-Si-B-Cu-Nb-Al-Ni low cost nanocrystalline magnet corePreparation Method, belongs to technical field of magnetic materials.
Background technology
Fe-Base nanocrystalline soft magnetic material has high saturated magnetic induction, high magnetic permeability low-coercivity and low high frequency to be damagedConsumption, good strong hardness wearability and corrosion resistance, good temperature and environmental stability, its comprehensive magnetic can be far superior to aluminiumSteel, ferrite, permalloy and non-crystaline amorphous metal etc. are the current soft magnetic materials of generally acknowledged excellent combination property in the world. WhereinFeCuNbSiB nanocrystalline magnet core is owing to containing noble metal Nb, and production cost is higher, is unfavorable for and the competition of the soft magnetic materials such as aluminum steel.
Summary of the invention
In order to solve above-mentioned technical problem, the object of this invention is to provide a kind of high-frequency electronic transformer Fe-Si-B-The preparation method of Cu-Nb-Al-Ni low cost nanocrystalline magnet core, in the situation that not reducing magnetic core performance, reduces the production of magnetic coreCost.
The technical solution used in the present invention is as follows:
A preparation method for Fe-Si-B-Cu-Nb-Al-Ni low cost nanocrystalline magnet core for high-frequency electronic transformer, bagDraw together following steps:
(1) be 500-550 DEG C, vacuum by the iron-based amorphous thin ribbon that utilizes single roller melt rotation quick quenching technique to make in temperatureFor vacuum isothermal annealing 1-2h under 0.001-0.002Pa condition, then air cooling, to room temperature, obtains nano-crystalline thin ribbon; Wherein, described inThe each constituent mass percentage of iron-based amorphous thin ribbon is: Fe72-75%, Si10-15%, B8-12%, Cu1-2%, Nb1-1.5%,Al0.5-1%, Ni0.4-0.6%, its bandwidth is 5-15mm, tape thickness is 15-20 μ m;
(2) nano-crystalline thin ribbon making is carried out to fragmentation, obtain nanocrystalline metal powder, then by nanocrystalline metal powderBe divided into A, B material by weight 25-35%, 65-70%;
(3) get A material and add γ-(methacryloxypropyl) propyl trimethoxy aluminium alkane of 0.5-1% and the mica powder of 2-4%,1000-1500rpm high-speed mixing 10-15min, dries, and pulverizes porphyrize powdered, crosses 200-300 mesh sieve, stand-by;
(4) get the triethanolamine that B material adds 1-3%, 2000-3000rpm speed lapping 10-15min, dries, and then addsAppropriate water making beating 15-20min, makes the slurries that concentration is 60-65%, and add slurry weight 0.3-0.5% aluminium nitride,The methenamine of 0.3-0.5%, the polyvinyl alcohol of 2-3%, stir, then be less than 20 μ m by colloid mill defibrination to particle diameter, willLiquid slurry is spray dried to graininess powder by spray drying tower, stand-by;
(5) will after above-mentioned steps (3) and step (4) processing, A material, B material mix, the concentration that adds 3-5% is 30-40% sodium aluminate aqueous solution, stirs, and adopts the pressing pressure of 1.5-2.0GPa to be pressed into magnetic core;
(6) by the magnetic core of moulding taking hydrogen as protective atmosphere, heating rate is the heat of annealing under 100-120 DEG C/minProcess, be warming up to 500-600 DEG C of insulation 60-80min, air cooling is to room temperature;
(7) be coated in uniformly the surface of magnetic core with magnetic core glue G500 resin, THICKNESS CONTROL, at 1-2mm, is then placed onIn 120-150 DEG C of baking oven, solidify 20-30min, get product
Beneficial effect of the present invention:
The present invention adopts Al, Ni part to replace the noble metal Nb in FeSiBCuNb magnetic core, adds Nb and is conducive to improve magnetic coreSaturation magnetic sense intensity, add Al and be conducive to coercitive reduction, simultaneously can obviously reduce being produced into of FeSiBCuNb magnetic coreThis; Nanocrystalline metal powder has been carried out different insulating wrapped processing by the present invention, effectively hindered between metal powder granulatesDirect contact, reduced the eddy-current loss producing between metal powder granulates, thereby reduced the total losses value of product. ThisBright coated processing can also effectively improve permeability frequency characteristics, increases quality factor, improves the high-temperature stability of magnetic core. ThisInvention manufacture craft is simple, and production cost is low, the magnetic core finished product preparing have high saturated magnetic induction, loss value low,The advantage such as high temperature resistant, its high comprehensive performance.
Detailed description of the invention
A preparation method for Fe-Si-B-Cu-Nb-Al-Ni low cost nanocrystalline magnet core for high-frequency electronic transformer, bagDraw together following steps:
(1) be that 520 DEG C, vacuum are by the iron-based amorphous thin ribbon that utilizes single roller melt rotation quick quenching technique to make in temperatureVacuum isothermal annealing 1.5h under 0.0015Pa condition, then air cooling, to room temperature, obtains nano-crystalline thin ribbon; Wherein, described iron-based is non-The each constituent mass percentage of brilliant strip is: Fe73.5%, Si13.5%, B9%, Cu1%, Nb1.5%, Al1%, Ni0.5%,Its bandwidth is 10mm, and tape thickness is 15 μ m;
(2) nano-crystalline thin ribbon making is carried out to fragmentation, obtain nanocrystalline metal powder, then by nanocrystalline metal powderBe divided into A, B material by weight 30%, 70%;
(3) get A material and add γ-(methacryloxypropyl) propyl trimethoxy aluminium alkane of 0.6% and 3% mica powder,1500rpm high-speed mixing 10min, dries, and pulverizes porphyrize powdered, crosses 300 mesh sieves, stand-by;
(4) get B material and add 2% triethanolamine, 2000rpm speed lapping 15min, dries, and then adds appropriate water to beatSlurry 15min, makes concentration and is 60% slurries, and add slurry weight 0.4% aluminium nitride, 0.3% methenamine, 3% poly-Vinyl alcohol, stirs, then is less than 20 μ m by colloid mill defibrination to particle diameter, and liquid slurry is sprayed dry by spray drying towerDry one-tenth graininess powder, stand-by;
(5) will after processing, above-mentioned steps (3) and step (4) A material, B expect mix, what to add 4% concentration be 35%Sodium aluminate aqueous solution, stirs, and adopts the pressing pressure of 1.6GPa to be pressed into magnetic core;
(6) by the magnetic core of moulding taking hydrogen as protective atmosphere, heating rate is the heat place that anneals under 120 DEG C/minReason, is warming up to 550 DEG C of insulation 70min, and air cooling is to room temperature;
(7) be coated in uniformly the surface of magnetic core with magnetic core glue G500 resin, THICKNESS CONTROL, at 1.5mm, is then placed onIn 130 DEG C of baking ovens, solidify 25min, get product.
After testing, the main magnetic property of magnetic core of the present invention: μ e=8.7 × 104，Bs=1.42T,P0.5/20k=15W/kg，P0.5/50k=76W/kg, during with 25 DEG C compared with magnetic core performance, in the time of-50 DEG C and 50 DEG C, the relative change rate of magnetic core performance is no more than5%。
Claims (1)
1. a preparation method for Fe-Si-B-Cu-Nb-Al-Ni low cost nanocrystalline magnet core for high-frequency electronic transformer, its spyLevy and be to comprise the following steps:
(1) by the iron-based amorphous thin ribbon that utilizes single roller melt rotation quick quenching technique to make in temperature for 500-550 DEG C, vacuum beVacuum isothermal annealing 1-2h under 0.001-0.002Pa condition, then air cooling, to room temperature, obtains nano-crystalline thin ribbon; Wherein, described ironThe each constituent mass percentage of base amorphous thin ribbon is: Fe72-75%, Si10-15%, B8-12%, Cu1-2%, Nb1-1.5%, Al0.5-1%, Ni0.4-0.6%, its bandwidth is 5-15mm, tape thickness is 15-20 μ m;
(2) nano-crystalline thin ribbon making is carried out to fragmentation, obtain nanocrystalline metal powder, then nanocrystalline metal powder is pressed heavyAmount is divided into A, B material than 25-35%, 65-70%;
(3) get A material and add γ-(methacryloxypropyl) propyl trimethoxy aluminium alkane of 0.5-1% and the mica powder of 2-4%, 1000-1500rpm high-speed mixing 10-15min, dries, and pulverizes porphyrize powdered, crosses 200-300 mesh sieve, stand-by;
(4) get the triethanolamine that B material adds 1-3%, 2000-3000rpm speed lapping 10-15min, dries, and then adds appropriateWater making beating 15-20min, make the slurries that concentration is 60-65%, and add aluminium nitride, the 0.3-of slurry weight 0.3-0.5%0.5% methenamine, the polyvinyl alcohol of 2-3%, stir, then be less than 20 μ m by colloid mill defibrination to particle diameter, by liquidSlurry is spray dried to graininess powder by spray drying tower, stand-by;
(5) will after above-mentioned steps (3) and step (4) processing, A material, B material mix, the concentration that adds 3-5% is 30-40%Sodium aluminate aqueous solution, stirs, and adopts the pressing pressure of 1.5-2.0GPa to be pressed into magnetic core;
(6) by the magnetic core of moulding taking hydrogen as protective atmosphere, heating rate is the heat place that anneals under 100-120 DEG C/minReason, is warming up to 500-600 DEG C of insulation 60-80min, and air cooling is to room temperature;
(7) be coated in uniformly the surface of magnetic core with magnetic core glue G500 resin, THICKNESS CONTROL, at 1-2mm, is then placed on 120-In 150 DEG C of baking ovens, solidify 20-30min, get product.
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| CN107256793B (en) * | 2017-06-22 | 2018-12-21 | 东莞市大忠电子有限公司 | A kind of nanocrystalline magnet core and preparation method thereof of low remanent magnetism |
| CN107393671B (en) * | 2017-06-22 | 2019-04-30 | 东莞市大忠电子有限公司 | A kind of iron based nanocrystalline magnet core and preparation method thereof |
| CN107256794B (en) * | 2017-06-22 | 2019-06-18 | 东莞市大忠电子有限公司 | A kind of high-frequency inversion nanocrystalline magnet core and preparation method thereof |
| CN107345265B (en) * | 2017-06-22 | 2019-08-09 | 东莞市大忠电子有限公司 | A kind of annealing process for the remanent magnetism reducing nanocrystalline magnet core |
| CN107393672B (en) * | 2017-06-22 | 2020-03-17 | 东莞市大忠电子有限公司 | Iron-nickel-based nanocrystalline magnetic core and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0243703A (en) * | 1988-08-04 | 1990-02-14 | Nippon Mining Co Ltd | Laminated magnetic core and manufacture thereof |
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| CN102737799A (en) * | 2012-06-20 | 2012-10-17 | 浙江科达磁电有限公司 | Preparation method of nanometer crystal magnetic powder core with magnetic conductivity mum of 60 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0243703A (en) * | 1988-08-04 | 1990-02-14 | Nippon Mining Co Ltd | Laminated magnetic core and manufacture thereof |
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Address after: 244000 Private Industrial Park, Tongling Bridge Economic Development Zone, Anhui, Tongling Patentee after: Tongling Sanjia transformer Polytron Technologies Inc Address before: 244000 Anhui province Tongling suburb Bridge Economic Development Private Industrial Park Patentee before: Tongling Sanjia Transformer Co., Ltd. |