CN107256792A - The manufacture method of iron based nano crystal inductance core - Google Patents
The manufacture method of iron based nano crystal inductance core Download PDFInfo
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- CN107256792A CN107256792A CN201710427657.XA CN201710427657A CN107256792A CN 107256792 A CN107256792 A CN 107256792A CN 201710427657 A CN201710427657 A CN 201710427657A CN 107256792 A CN107256792 A CN 107256792A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
- H01F41/0226—Manufacturing of magnetic circuits made from strip(s) or ribbon(s) from amorphous ribbons
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15333—Amorphous metallic alloys, e.g. glassy metals containing nanocrystallites, e.g. obtained by annealing
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Abstract
The invention discloses a kind of manufacture method of iron based nano crystal inductance core, include successively：Winding steps, heat treatment step, curing schedule, cutting step, surface pre-treatment step, protective treatment step, etch step and cleaning step, wherein, in the etch step, the cut surface of magnetic core base substrate using etchant solution to being obtained after the protective treatment carries out corrosion treatment, and the solute of the etchant solution is the one or more in ferric trichloride, ferric nitrate, copper nitrate, copper chloride.Of the present invention to improve the method for core inductance, technological process is simple, easy to operate, can realize mass production, can effectively reduce labor strength, improves production efficiency.
Description
Technical field
The invention belongs to amorphous and nanocrystalline soft magnetic alloy magnetic elements manufacture field, more particularly to a kind of iron based nano crystal
The manufacture method of inductance core.
Background technology
In recent years, its excellent soft magnet performance due to iron based nanocrystalline magnet core, be widely used in transformer, reactor,
Magnetic amplifier, EMC wave filters common mode inductance and differential mode inductance magnetic core, especially high-frequency high-power export transformer.Due to annular
There is coiling in class magnetic core, particularly in the case of the number of turn is more, therefore, iron based nano crystal inductance core is obtained extensively
General concern.Inductance is a kind of physical quantity for characterizing magnetic core element self-induction capacity of water, while the size of core inductance is determined
The value of its work magnetic induction intensity, is the key factor for determining component structure size, therefore, and inductance is commonly used for weighing electricity
Feel the leading indicator of magnetic core performance.The production technology of inductance core determines that it can cause cut surface hair occur in cutting process
Thorn, local tangent plane are uneven, cut surface interlayer chip residual, reduce contact area after magnetic core docking, and net sectional area reduction is led
Send a telegraph sense to decline, it is impossible to meet design requirement.
There is uneven, cut surface interlayer chip residual of burr, local tangent plane etc., existing side in cut surface after being cut for magnetic core
Method is mainly mechanical grinding method, is such as polished using surface grinding machine, belt sander equipment, can so improve iron based nano crystal inductance
Core inductance, the method can only single-piece processing and operation time-consuming, low production efficiency, equipment and moulds of industrial equipment input amount are huge,
It is difficult to realize batch production；Simultaneously because magnetic core is persistently also easy to produce the damage of magnetic core tangent plane, cracking by external force effect in bruting process,
So as to cause magnetic core outward appearance waste product, defective proportion rise, general effect is undesirable.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of system of iron based nano crystal inductance core
Make method.This method can realize batch production, lifting magnetic core appearance yield and improve iron based nanocrystalline magnet core inductance.
To achieve the above object, present invention employs following technical scheme：
A kind of manufacture method of iron based nano crystal inductance core, includes successively：Winding steps, heat treatment step, solidification step
Suddenly, cutting step, surface pre-treatment step, protective treatment step, etch step and cleaning step, wherein, described
In etch step, the cut surface of the magnetic core base substrate using etchant solution to being obtained after the protective treatment is carried out at corrosion
Reason, the solute of the etchant solution is the one or more in ferric trichloride, copper chloride, ferric nitrate, copper nitrate.
In the manufacture method of above-mentioned iron based nano crystal inductance core, as a kind of preferred embodiment, the corrosion is molten
The solvent of liquid is alcohol.It is highly preferred that the alcohol is that (analysis is pure for absolute ethyl alcohol：Ethanol content 99.7%), alcohol water content
Bigger, magnetic core more gets rusty easily.
When etchant solution of the present invention is ferric trichloride alcoholic solution, it is brown color liquid, due to trivalent Fe tools
It is oxidizing, can occur redox reaction with Fe atoms and dissolve Fe unnecessary near cut surface, chemical reaction equation
Formula is 2FeCl3+ Fe=3FeCl2.When the solute of etchant solution is above-mentioned other compositions (such as ferric nitrate, copper nitrate, copper chloride)
When, its same ferric trichloride of corrosion principle to cut surface.
In the manufacture method of above-mentioned iron based nano crystal inductance core, as a kind of preferred embodiment, the corrosion is molten
In liquid, the mass percent concentration of the solute for 5%~50% (such as 6%, 8%, 12%, 15%, 18%, 21%,
23%th, 28%, 33%, 36%, 40%, 43%, 45%, 48%, 49%), excessive concentration can cause cut surface excessive corrosion, magnetic
Core performance deteriorates and outward appearance is unqualified, and the too low improvement to inductance of concentration is not obvious.Further, the etchant solution
In, the mass percent concentration of the solute is preferably 20~50%.
In the etchant solution, the mass percent concentration of the solute is 5%~50%, such as mass percent concentration
The compound method of 5% ferric trichloride alcoholic solution is：5g ferric trichlorides are slowly added in 95g alcohol, and with glass bar not
Disconnected stirring until ferric trichloride is completely dissolved so that with 5wt% ferric trichloride alcoholic solution (i.e. etchant solution).
, can be according to magnetic core feature, at the corrosion for keeping appropriateness in the manufacture method of above-mentioned iron based nano crystal inductance core
The reason time, as a kind of preferred embodiment, in the etch step, time of the corrosion treatment for 10~
120min (such as 12min, 16min, 20min, 25min, 30min, 35min, 40min, 45min, 50min, 55min, 65min,
70min, 80min, 90min, 100min, 110min, 119min), etching time is long, cut surface excessive corrosion cause outward appearance,
Performance does not conform to.It is highly preferred that the time of the corrosion treatment is 60~120min.
In the manufacture method of above-mentioned iron based nano crystal inductance core, as a kind of preferred embodiment, in the corrosion
In process step, the cut surface of the magnetic core base substrate obtained after by the protective treatment immerses by the way of the etchant solution pair
The cut surface of the magnetic core base substrate carries out corrosion treatment.
In the manufacture method of above-mentioned iron based nano crystal inductance core, as a kind of preferred embodiment, on the surface
In pre-treatment step, the magnetic core billet surface obtained after the cutting is pre-processed using ethyl acetate.Preferably, it is described
Surface preparation be the magnetic core base substrate that will be obtained after the cutting be completely immersed in ethyl acetate soak 10min~60min (such as
12min, 15min, 20min, 25min, 30min, 35min, 40min, 45min, 50min, 55min, 58min), then take out magnetic
Core base substrate is clean by removing surface.The purpose of surface preparation is the surface debris for removing magnetic core base substrate after cutting, due to cutting
Region beyond face can also have cutting chip, it is therefore necessary to be totally immersed into.Soak time is oversize to cause magnetic core base substrate interlayer
Glue be dissolved, influence adhesive strength.It is further preferred that the ethyl acetate portion or all being substituted by ethanol.
In the manufacture method of above-mentioned iron based nano crystal inductance core, as a kind of preferred embodiment, in the protection
In process step, protective treatment is carried out to the outer surface of the magnetic core base substrate.Preferably, the protective treatment refers in the magnetic
Last layer overcoat is covered in the outer surface of core base substrate, then enters baking oven and does.It is highly preferred that the thickness of the overcoat is 35~60 μm
(such as 36 μm, 40 μm, 45 μm, 50 μm, 55 μm, 58 μm)；The drying temperature be 40 DEG C~60 DEG C (such as 42 DEG C, 45 DEG C, 50
DEG C, 52 DEG C, 55 DEG C, 58 DEG C), drying time be 30~60min (such as 32min, 35min, 40min, 45min, 50min,
55min, 58min), it is defined by overcoat solidification.Overcoat is excessively thin, can be because of friction in product subsequent handling assembling process
Or colliding with causes overcoat localized loss to influence protection effect, overcoat is blocked up to cause product overall dimension to exceed tolerance model
Enclose and unqualified.The protective treatment of the step, mainly prepares for the corrosion treatment of next step, to prevent etchant solution by magnetic
Outer surface corrosion beyond core base substrate cut surface, so as to influence the quality of magnetic core, that is to say, that protective treatment is to magnetic core base substrate
Outer surface protected, prevent liquid penetrate into magnetic core interlayer, corrosion cut surface beyond region.The material of overcoat can be
Any resin material with hardening extremely fast, excellent electrical apparatus insulation and anti-corrosion solution corrosion, it is preferable that anti-
The material of sheath is insulation varnish V821A, insulation varnish 1032EHG or nanometer polymerization paint V852-19A/B.The protection
Processing is specific as follows：First by synthetic resin and diluent with 100:15~30 (such as 100:16、100:20、100:22、100:
25、100:27、100:29) weight than mixing, the viscosity control of obtained glue 25s~50s (such as 26s, 30s, 35s,
40s, 45s, 48s) in the range of (using apply 4 viscosity meters), it is then that the magnetic core base substrate after the surface preparation is straight
The magnetic core base substrate for being placed in the glue or cut surface being stained with into adhesive tape is connect to be placed in the glue, immersion 5~
10min (such as 6min, 7min, 8min, 9min) makes the outer surface of the magnetic core base substrate be covered with glue, after 40 DEG C dry 30
~60min.The diluent is alkyd diluent X-7；The synthetic resin is insulation varnish V821A, insulation varnish
1032EHG or nanometer polymerization paint V852-19A/B.In protective treatment step, magnetic core base substrate is before immersion glue, to cutting
Face can not be processed, and the simple process i.e. adhesive gel band on cut surface can also be carried out to cut surface, is not appointed in cut surface
In the case that where is managed, overlaying on the glue on cut surface can be dissolved in subsequent corrosion processing procedure by alcohol, be usually
For the sake of convenience, the magnetic core base substrate after surface preparation is directly placed in glue by selection.
In the manufacture method of above-mentioned iron based nano crystal inductance core, as a kind of preferred embodiment, in the cleaning
In step, the cut surface of the magnetic core base substrate after the corrosion treatment is cleaned using cleaning agent, the iron-based nanometer is obtained
Brilliant inductance core, the cleaning agent is preferably industrial alcohol (i.e. ethanol content is more than 95%), and the cleaning step is mainly used in
Remove the chemical reagent remained after cut surface corrosion.
In the manufacture method of above-mentioned iron based nano crystal inductance core, as a kind of preferred embodiment, in the winding
In step, iron based nano crystal band is wound into the magnetic core base substrate of corresponding shape.
In the manufacture method of above-mentioned iron based nano crystal inductance core, as a kind of preferred embodiment, at the heat
Manage in step, the magnetic base substrate of coiling and molding is heat-treated.Specific Technology for Heating Processing can be according to iron based nano crystal magnetic
The material and performance requirement of core use corresponding Technology for Heating Processing.
In the manufacture method of above-mentioned iron based nano crystal inductance core, as a kind of preferred embodiment, in the solidification
In step, impregnation curing process is carried out to the magnetic core base substrate after heat treatment, impregnation curing process can be routinely solid using this area
Change method, such as glue can be conventional epoxide-resin glues.
The method of the present invention is adapted to the preparation of all cutting class iron based nano crystal inductance cores, such as the shape of described magnetic core
For c-type, E types, block, annular incision etc..
In the manufacture method of above-mentioned iron based nano crystal inductance core, the material of the iron based nanocrystalline magnet core can be appointed
What iron based nano crystal (band).
In addition, the inductance for the magnetic core that the inventive method is obtained is measured by TH2828S automatic component analyzers.
Compared with prior art, the beneficial effects of the present invention are：
1st, in the present invention, magnetic core base substrate is cut into face-down back-off in the etchant solution for filling appropriate certain concentration to change
Corrosion treatment is carried out in the reaction vessels for learning reagent, cut surface burr and interlayer chip is eliminated, makes cut surface smooth, is increased
Plus effective contact area and enhancing magnetic core interlayer insulating properties after magnetic core docking, see Fig. 2, core inductance amount is improved so as to reach
Purpose, and by setting chemical agent concentration, corrosion treatment time, control inductance lifting effect is not led to also in the prior art
Crossing chemical method improves the report of iron based nanocrystalline magnet core inductance.
2nd, of the present invention to improve the method for core inductance, technological process is simple, easy to operate, can realize batch metaplasia
Production, can effectively reduce labor strength, improve production efficiency.
3rd, the method effect of the present invention for improving core inductance is 20kHz in frequency, voltage is 0.5V bar substantially
Under part, the μ H of inductance value >=8.50, hence it is evident that change better than using existing machinery method (such as belt sander polishing) to core inductance value
Kind, existing method obtains the μ H of the inductance value of magnetic core >=6.93 under the same conditions.With being obtained after being polished using existing machinery method
Magnetic core compare, the core inductance prepared using the inventive method, which can be lifted, reaches 35%.
4th, because method used in the present invention is non-mechanical approach, it effectively prevent in existing method in processing procedure and deposit
The bad phenomenon such as magnetic core the tangent plane damage, the cracking that are persistently acted on and caused by external force, there is waste product, defect ware probability in magnetic core
Significantly lower than method used in the prior art.
Brief description of the drawings
Fig. 1 is the cut surface of the magnetic core obtained after surface preparation before magnetic core corrosion treatment according to embodiments of the present invention
Microphoto；
Fig. 2 is that magnetic core according to embodiments of the present invention uses concentration to be handled for 20wt% ferric trichloride alcoholic solution
60min and the cut surface of magnetic core obtained after cleaning microphoto.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below by specific embodiment to the present invention's
Technical scheme carries out clear, complete description, it is clear that described embodiment is a part of embodiment of the invention rather than whole
Embodiment.Based on embodiments of the invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained belongs to the scope of protection of the invention.
Iron based nano crystal inductance core is produced using the method for the present invention, wherein magnetic core specification is CNC (product standard and types
Code) -75 (interior length of window) * 28 (interior window width) * 25 (lamination thickness) * 35 (strip width).
Embodiment 1-12
The method that embodiment 1-12 has been respectively adopted has manufactured 1-12# magnetic cores, and specific method is as follows：
(1) iron based nano crystal band 1K107B is wound, then carries out heat treatment and dipping process and dry, obtain
Magnetic core base substrate, size is CNC-75*28*25*35；
(2) as required, the magnetic core base substrate obtained using conventional cutting technique to step (1) carries out cutting process, cutting
Cut surface is produced after processing；
(3) the magnetic core base substrate after cutting process is completely immersed in ethyl acetate and carries out surface preparation, to remove magnetic core
The cutting chip of billet surface, soak time is 10min, then takes out that magnetic core base substrate is clean by removing surface, cut surface it is aobvious
Micro- photo is referring to Fig. 1；
(4) first according to 100:20 mass ratio is by insulated synthetic resin varnish V821A and diluent alkyd diluent X-7
Stirring is mixed to form the glue (using 4 viscosity meters are applied) that viscosity is 30s, and then magnetic core base substrate is placed in the glue,
Soak 7min and dry 40min after 40 DEG C, the antirust coat that a layer thickness is 40 μm is obtained on the outer surface of magnetic core base substrate；
(5) it is the face-down back-off of magnetic core base substrate cutting for scribbling overcoat is molten in the ferric trichloride alcohol for filling certain concentration
Corrosion treatment is carried out in the reaction vessels of liquid, the corrosion treatment time is maintained at 10~120min, ferric trichloride in each embodiment
The concentration and etching time of alcoholic solution are referring to table 1 below.
(6) with the magnetic core after industrial alcohol washes corrosion treatment, dry naturally and obtain magnetic core finished product 1-12#, wherein, 7# magnetic
The microphoto of the cut surface of core finished product is referring to Fig. 2.
The technique of comparative example in table 1 is the cut surface of the magnetic core base substrate after step of the present invention (2) is cut through machinery side
The magnetic core that method polishing is obtained.
Test magnetic core finished product 1-12# inductance value using TH2828S automatic components analyzer, and with after prior art processing
Comparative example contrasted, as a result referring to table 1.
As a result confirm that, according to finished iron based nano crystal inductance core of the invention, inductance value lifting effect is obvious, this hair
The core inductance value that bright method is obtained is lifted up to 34.1% compared with the inductance value for the magnetic core that the polishing of existing machinery method is obtained, and
It is that inductance value is up to 9.08 μ H, hence it is evident that better than the side used in the prior art under conditions of 20kHz, voltage are 0.5V in frequency
The inductance value for the magnetic core that method is obtained (is that existing method inductance value is up under conditions of 20kHz, voltage are 0.5V in frequency
7.67 μ H), the concentration 20wt% of ferric trichloride alcoholic solution is preferred scheme.
Table 1 is contrasted using embodiment 1-12 with mechanical means polishing scheme treatment effect
Embodiment 13-20
In addition to the concentration and etching time of the ferric trichloride alcoholic solution used in step (5) are different from embodiment 10,
Other step of preparation process and parameter are same as in Example 10, and embodiment 13-20 prepares magnetic core finished product 13-20#.Each reality
The concentration and etching time of ferric trichloride alcoholic solution in example are applied referring to table 2 below, core inductance is shown in Table 2, comparative example remain as by
The magnetic core that the cut surface of magnetic core base substrate after step (2) cutting of the present invention is obtained through mechanical means polishing.
The embodiment 13-20 of table 2 and comparative example technological parameter and Contrast on effect
Comparative example L1-8
Magnetic core base substrate cut surface after cutting is polished (after the cutting that i.e. step of embodiment 10 (2) is obtained using mechanical means
Magnetic core base substrate), 8 magnetic cores are prepared for altogether, referring to the comparative example L1-8 in table 3 below；Manufactured altogether using the method for embodiment 7 simultaneously
8 magnetic cores, i.e., the embodiment L1-8 in table 3 below, i.e. result are confirmed using the magnetic after the present invention program (embodiment L1-8) processing
Core, cross dimensions and outward appearance do not occur any bad phenomenon.And the magnetic core (comparative example L1-8) for using mechanical means to handle breaks
Face size can change, and dimension overproof ratio is up to 12.5%；It is respectively 50% that magnetic core, which produces tangent plane damage and the ratio of cracking,
With 12.5%, as a result referring to table 3.
The magnetic core cross dimensions and cosmetic variation of the different modes of table 3 before and after the processing
Embodiment 21-23
The method that embodiment 21-23 has been respectively adopted has manufactured 21-23# magnetic cores, and specific method is as follows：
(1) iron based nano crystal band 1K107B is wound, then carries out heat treatment and dipping process and dry, obtain
Magnetic core base substrate, size is CNC-75*28*25*35；
(2) as required, the magnetic core base substrate obtained using conventional cutting technique to step (1) carries out cutting process, cutting
Cut surface is produced after processing；
(3) the magnetic core base substrate after cutting process is completely immersed in ethyl acetate and carries out surface preparation, to remove magnetic core
The cutting chip of billet surface, soak time is 10min, then takes out magnetic core base substrate removing surface is clean；
(4) first according to 100:20 mass ratio is by insulated synthetic resin varnish V821A and diluent alkyd diluent X-7
Stirring is mixed to form the glue (using 4 viscosity meters are applied) that viscosity is 30s, and then magnetic core base substrate is placed in the glue,
Soak 7min and dry 40min after 50 DEG C, the antirust coat that a layer thickness is 40 μm is obtained on the outer surface of magnetic core base substrate；
(5) the magnetic core base substrate for scribbling overcoat is cut into face-down back-off in the reactor for the etchant solution for filling 20wt%
Corrosion treatment is carried out in ware, the corrosion treatment time is maintained at 60min, and etchant solution solute is referring to table 4, solvent in each embodiment
For absolute ethyl alcohol.
(6) with the magnetic core after industrial alcohol washes corrosion treatment, dry naturally and obtain magnetic core finished product 21-23#.
The technique of comparative example in table 4 is the cut surface of the magnetic core base substrate after step of the present invention (2) is cut through machinery side
The magnetic core that method polishing is obtained.
Magnetic core finished product 21-23# inductance value is tested using TH2828S automatic components analyzer, and is handled with prior art
Comparative example afterwards is contrasted, as a result referring to table 4.
Table 4 is contrasted using embodiment 21-23 with mechanical means polishing scheme treatment effect
Embodiments of the invention are the foregoing is only, the purpose of the present invention, technical scheme and beneficial effect have been carried out in detail
Describe bright, to be not intended to limit the present invention the scope of the claims in detail, it is any that every utilization description of the invention and accompanying drawing content are made
Modification, equivalent flow conversion, or other related technical fields are directly or indirectly used in, the patent of the present invention all should be included in
In protection domain.
Claims (10)
1. a kind of manufacture method of iron based nano crystal inductance core, it is characterised in that include successively：Winding steps, heat treatment step
Suddenly, curing schedule, cutting step, surface pre-treatment step, protective treatment step, etch step and cleaning step, its
In,
In the etch step, the cut surface of the magnetic core base substrate using etchant solution to being obtained after the protective treatment enters
Row corrosion treatment, the solute of the etchant solution is the one or more in ferric trichloride, copper chloride, ferric nitrate, copper nitrate.
2. the manufacture method of iron based nano crystal inductance core according to claim 1, it is characterised in that the etchant solution
Solvent be alcohol；Preferably, the alcohol is absolute ethyl alcohol.
3. the manufacture method of iron based nano crystal inductance core according to claim 1 or 2, it is characterised in that the corrosion
In solution, the mass percent concentration of the solute is 5%~50%, the mass percent concentration of the solute is preferably 20~
50%.
4. the manufacture method of the iron based nano crystal inductance core according to claim any one of 1-3, it is characterised in that in institute
State in etch step, the time of the corrosion treatment is 10-120min；Preferably, the time of the corrosion treatment is 60-
120min。
5. the manufacture method of the iron based nano crystal inductance core according to claim any one of 1-4, it is characterised in that in institute
State in etch step, the etchant solution is immersed using the cut surface for the magnetic core base substrate that will be obtained after the protective treatment
Mode carries out corrosion treatment to the cut surface of the magnetic core base substrate.
6. the manufacture method of the iron based nano crystal inductance core according to claim any one of 1-5, it is characterised in that in institute
State in surface pre-treatment step, the magnetic core billet surface obtained after the cutting is pre-processed using ethyl acetate；It is preferred that
Ground, the surface preparation be the magnetic core base substrate that will be obtained after the cutting be completely immersed in ethyl acetate soak 10min~
60min, then takes out magnetic core base substrate removing surface is clean；It is further preferred that the ethyl acetate portion or all by second
Alcohol is substituted.
7. the manufacture method of the iron based nano crystal inductance core according to claim any one of 1-6, it is characterised in that in institute
State in protective treatment step, protective treatment is carried out to the outer surface of the magnetic core base substrate；Preferably, the protective treatment refers to
Last layer overcoat is covered in the outer surface of the magnetic core base substrate, then enters baking oven and does；It is highly preferred that the thickness of the overcoat is 35
~60 μm；The drying temperature is 40 DEG C~60 DEG C, and drying time is 30~60min, is defined by overcoat solidification.
8. the manufacture method of iron based nano crystal inductance core according to claim 7, it is characterised in that the protective treatment
It is specific as follows：First by synthetic resin and diluent with 100:15~30 weight is than mixing, and the viscosity control of obtained glue exists
In the range of 25s~50s, then the magnetic core base substrate after the surface preparation is placed directly within the glue or will cut
The magnetic core base substrate that face is stained with adhesive tape is placed in the glue, and 5~10min of immersion makes the outer surface of the magnetic core base substrate
Be covered with glue, after 40 DEG C dry 30~60min.
9. the manufacture method of the iron based nano crystal inductance core according to claim any one of 1-8, it is characterised in that in institute
State in cleaning step, the cut surface of the magnetic core base substrate after the corrosion treatment is cleaned using cleaning agent, the iron is obtained
Base nanometer crystal inductance core, the cleaning agent is preferably industrial alcohol.
10. the manufacture method of the iron based nano crystal inductance core according to claim any one of 1-9, it is characterised in that
In the winding steps, iron based nano crystal band is wound into the magnetic core base substrate of corresponding shape；
In the heat treatment step, the magnetic core base substrate of coiling and molding is heat-treated；
In the curing schedule, impregnation curing process is carried out to the magnetic core base substrate after heat treatment.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108364776A (en) * | 2018-03-15 | 2018-08-03 | 河北申科电子股份有限公司 | A kind of solidification production technology of current transformer ultracrystalline magnetic core |
| CN108899188A (en) * | 2018-06-13 | 2018-11-27 | 苏州诺弘添恒材料科技有限公司 | A kind of preparation method of the iron nickel soft magnetic bodies with nano anti-corrosive body layer |
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| CN111235495A (en) * | 2020-02-21 | 2020-06-05 | 中国电力科学研究院有限公司 | Amorphous nanocrystalline alloy, iron core and method for measuring wide-range current transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108364776A (en) * | 2018-03-15 | 2018-08-03 | 河北申科电子股份有限公司 | A kind of solidification production technology of current transformer ultracrystalline magnetic core |
| CN108364776B (en) * | 2018-03-15 | 2020-09-08 | 河北申科电子股份有限公司 | Solidification production process of ultracrystalline magnetic core for current transformer |
| CN108899188A (en) * | 2018-06-13 | 2018-11-27 | 苏州诺弘添恒材料科技有限公司 | A kind of preparation method of the iron nickel soft magnetic bodies with nano anti-corrosive body layer |
| CN109178497A (en) * | 2018-10-12 | 2019-01-11 | 上海劲兆互感器有限公司 | A kind of c-type iron core bonding packaging method |
| CN111235495A (en) * | 2020-02-21 | 2020-06-05 | 中国电力科学研究院有限公司 | Amorphous nanocrystalline alloy, iron core and method for measuring wide-range current transformer |
| CN111235495B (en) * | 2020-02-21 | 2022-10-04 | 中国电力科学研究院有限公司 | Amorphous nanocrystalline alloy, iron core manufacturing method and wide-range current transformer measuring method |
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