CN104835616B - Circular-ring-shaped high-power electric reactor and manufacturing method thereof - Google Patents
Circular-ring-shaped high-power electric reactor and manufacturing method thereof Download PDFInfo
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- CN104835616B CN104835616B CN201510288201.0A CN201510288201A CN104835616B CN 104835616 B CN104835616 B CN 104835616B CN 201510288201 A CN201510288201 A CN 201510288201A CN 104835616 B CN104835616 B CN 104835616B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 230000005291 magnetic effect Effects 0.000 claims abstract description 105
- 239000000843 powder Substances 0.000 claims abstract description 34
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000003292 glue Substances 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 27
- 210000003298 dental enamel Anatomy 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 239000004593 Epoxy Substances 0.000 claims description 7
- 235000013339 cereals Nutrition 0.000 claims description 7
- RTWNYYOXLSILQN-UHFFFAOYSA-N methanediamine Chemical compound NCN RTWNYYOXLSILQN-UHFFFAOYSA-N 0.000 claims description 7
- 229920001296 polysiloxane Polymers 0.000 claims description 7
- IGQLTMLBFFIKBR-UHFFFAOYSA-N SCO[Si](OC)(C)CCCO Chemical compound SCO[Si](OC)(C)CCCO IGQLTMLBFFIKBR-UHFFFAOYSA-N 0.000 claims description 6
- 235000013312 flour Nutrition 0.000 claims description 6
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 238000007711 solidification Methods 0.000 claims description 6
- 230000008023 solidification Effects 0.000 claims description 6
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 claims description 4
- -1 mercapto hydroxypropyl methyl Chemical group 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- YQGOWXYZDLJBFL-UHFFFAOYSA-N dimethoxysilane Chemical compound CO[SiH2]OC YQGOWXYZDLJBFL-UHFFFAOYSA-N 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 13
- 239000000463 material Substances 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 239000011889 copper foil Substances 0.000 description 5
- 229920000784 Nomex Polymers 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000004763 nomex Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010000372 Accident at work Diseases 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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Abstract
The invention discloses a circular-ring-shaped high-power electric reactor. The electric reactor comprises a magnetic core and a coil. The magnetic core is a circular-ring-shaped magnetic core formed by two identical semicircular-ring-shaped magnetic core bodies in a combined mode, the diameter of the circular-ring-shaped magnetic core ranges from 7 inches-20 inches, and the magnet density of the circular-ring-shaped magnetic core ranges from 5.5 g/cm＜3＞ to 6.2 g/cm＜3＞. The two semicircular-ring-shaped magnetic core bodies are sleeved with the coil which is a spiral varnished wire coil formed by a flat wire in a vertical winding mode. The semicircular-ring-shaped magnetic core bodies are formed by pouring a magnetic composite material composed of ferromagnetic powder and high-temperature resin adhesive through a semicircular-ring-shaped mould. The electric reactor is simple in structure, low in production cost, light in weight, low in noise, low in loss, good in surface heat dissipation and long in service life; the process is simple, and automatic operation is easy to achieve; the utilization rate of the magnetic core is high, magnetic leakage is small, and the EMI effect is good.
Description
Technical field
The present invention relates to inductance component technical field, specifically a kind of high-power annular reactor and its manufacturer
Method.
Background technology
Reactor is indispensable as reactive-load compensation means, in power system.Reactor is used for limiting electrical network electricity
The rush of current that pressure mutation and operating process voltage cause, the spike included in smooth supply voltage, or smooth bridge-type are whole
The voltage effects produced during current circuit commutation, effectively protect frequency converter and improve power factor, and it can be prevented from electrical network
Interference, the pollution of the harmonic current to electrical network of rectification unit generation can be reduced again.
The manufacture process of traditional silicon steel reactor is complicated, and production cost is high.Its manufacturing process mainly includes herein below：
1st, the coiling of coil：Coiling needs Copper Foil or aluminium foil, insulating materials Nomex paper, epoxy resin bar and asphalt mixtures modified by epoxy resin
The material and facilities such as fat plate, winding mould.Copper Foil and aluminium foil are used to conduct electric current, form magnetic field.Nomex paper is used for coil inside
Insulation.Its winding process mainly includes internal model assembling, inner copper line welding, the insulation of Nomex paper and Copper Foil coiling, outer copper line welding
Etc. process.The raw material that the operation needs are more, and the prices of raw materials are expensive, and in addition Copper Foil winding equipment input is larger, coiling effect
Rate is low, and mould is costly, causes high production cost.
2nd, the making of silicon steel core：The material that traditional iron core is used is silicon steel sheet, and the production process of silicon steel sheet is complicated, especially
It is grain-oriented Si steel sheet, domestic at present to only have the large-scale steel mills of several families such as Baosteel, Wuhan Iron and Steel Plant to manufacture, cost is high.Silicon steel
Piece through band slitting, then through slitting and the horizontal silicon steel sheet material cut, make required specification, finally by folder from top to bottom
Closed assembly is carried out to silicon steel sheet material to fix.The superposition Making programme of iron core is complicated, and manufacture requirements are high, and mechanization degree is low, and silicon steel
The shearing of piece and closed assembly are easily damaged due to sharp edge and burr to human body, increase industrial accident rates, govern iron
The production efficiency of core.
3rd, assemble：Traditional silicon steel reactor is needed through gripping silicon steel sheet lamination assembling and fixed, center pillar lamination assembling up and down.
Middle column iron core needs distributed air gaps, and adjusts air gap thickness, and then adjusting inductance.In addition coil is gone back with iron core in assembling process
Need to do insulation processing, to meet the electric property of inductance.The last process for carrying out dipping lacquer and baking again.
Generally speaking, the production process of traditional silicon steel reactor is complicated, and floor space is big, and equipment and personnel's input are big, need
Manufacturer that will be professional produces, and long the production cycle, and efficiency is low, into high cost is produced, governs the development of reactor.
In addition traditional silicon steel reactor noise is big, bulky, and on surrounding environment and installation very big impact is brought, and radiates
Poor, easy leakage field, EMI effect differences etc. all govern the development of reactor.Particularly in high current (electric current is more than 100A), high frequency
In the running environment of (frequency is higher than 5KHz), traditional silicon steel sheet reactor is relatively difficult to meet application requirement.
In consideration of it, good reactor is that current electron electric power is quick to develop a kind of process is simple, with low cost, electromagnetic performance
The active demand of development.
The content of the invention
The technical problem such as iron core noise is big in order to solve conventional reactor, volume is big and production process is complicated, cost is high,
Particularly conventional reactor is difficult to meet asking for application requirement in high current (electric current is more than 100A), high frequency (frequency is higher than 5KHz)
Topic.The present invention provides that a kind of noise is little, inductance performance is good, leakage field is little, small volume, excellent radiation performance, be lost low and be adapted to
The high-power annular reactor applied in high current (electric current is more than 100A), high frequency (frequency is higher than 5KHz) environment.
For achieving the above object, the present invention provides following technical scheme：
A kind of high-power annular reactor, including magnetic core and coil, the magnetic core is by two identical semi-circular shape
The toroidal cores of core combination, a diameter of 7～20 inches of the toroidal cores, the magnet of the toroidal cores
Density is 5.5g/cm3～6.2g/cm3, the coil is enclosed within two semi-circular shape magnetic cores, and the coil is by flat wire
It is vertical to turn to spiral enamel wire coil, the magnetic that the semi-circular shape magnetic core is made up of ferromagnetic powder and high-temperature resin glue
Composite is poured by semi-annular mould and made.
Further, the center of an end face of the semi-circular shape magnetic core offers cylinder shape groove, the semicircular ring
The cylindrical boss for being provided centrally with coordinating with the cylinder shape groove of another end face of shape magnetic core.
Further, the section of the semicircular ring magnetic core is circular or oval or arbitrary polygon.
Further, two semi-circular shape magnetic cores are fixedly connected by glue.
The present invention also provides a kind of manufacture method of high-power annular reactor, comprises the following steps：
1) coiling enamel wire coil is in the shape of a spiral；
2) by 70～80wt% of resin glue, 5～10wt% of coupling agent, accelerator 15～20wt% mixing and stirrings, obtain
To high-temperature resin glue；
3) ferromagnetic powder is mixed with the high-temperature resin glue by 88～94wt% of ferromagnetic powder, 6～12wt% of high-temperature resin glue
Stir, obtain magnetic composite；
4) magnetic composite is expelled in semi-annular mould, two semi-circular shape magnetic cores is poured into a mould respectively,
The demoulding after 125～140 DEG C of 1.5～2.5h of solidification, obtains two identical semi-circular shape magnetic cores；
5) the spiral helicine enamel wire coil is inserted in respectively in two semi-circular shape magnetic cores, then with glue by two
Semi-annular magnetic core is merged into a circle ring magnetic core, that is, make the high-power annular reactor.
Further, the resin glue is modified epoxy silicones.
Further, the coupling agent is mercapto hydroxypropyl methyl dimethoxysilane.
Further, the accelerator is the methanediamine of isophthalic two.
Further, the grain size proportion of the ferromagnetic powder is as follows：- 100 mesh～200 mesh：20～30wt%, -200 mesh～
500 mesh：30～40wt%, -500 mesh：30～50wt%.
Further, the ferromagnetic powder is at least in iron silica flour, iron powder, iron aluminum silicon powder, iron nickel powder and iron silicochromium powder
Kind.
Compared with prior art, the invention has the beneficial effects as follows：Present configuration is simple, simplifies production technology, saves
Large number quipments inputs, and reduce the floor space of production and saved the materials such as a large amount of Copper Foils, reduce whole reactance
The Productive statistics of device；Coiling and cast the production of magnetic core and easily realize automation, and assemble simple, save substantial amounts of human resources；
For comparing traditional iron core reactor, this reactor also has following feature performance benefit：
1st, reactor is lightweight, and than 500A, traditional iron core reactor of 300 μ H is light by 1/3 or so, facilitates the installation of reactor
And transportation；
2nd, reactor outward appearance is the circular ring type magnetic core with vertical coiling, and surface area is big, and thermal diffusivity is good, extends reactor
Service life；
3rd, magnetic core is integrally surrounded by vertical coiling, and utilization rate is high, and leakage field is few, and EMI effects are good；
4th, magnetic core is made up of Insulating Ferromagnets powder, and insulating properties are fabulous, and the eddy-current loss of magnet is low, has saved a large amount of energy consumptions；
5th, reactor noise is low, and the pollution to surrounding environment is little.
Description of the drawings
Fig. 1 is a kind of structural representation of high-power annular reactor of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1
A kind of high-power annular reactor, including magnetic core 1 and coil 2, the magnetic core 1 is by two identical semicircular rings
The toroidal cores that shape magnetic core is formed by fixedly connecting by glue, the section of the semicircular ring magnetic core is circle, the annular magnetic
A diameter of 20 inches of core, the magnet density of the toroidal cores is 6.2g/cm3, the coil 2 is enclosed within two semicircles
On toroidal core, the coil 2 is to turn to spiral enamel wire coil by flat wire is vertical, and the semi-circular shape magnetic core is
The magnetic composite being made up of ferromagnetic powder and high-temperature resin glue is poured by semi-annular mould to be made.
Above-mentioned high-power annular reactor is being fabricated by by the following method, is comprised the following steps：
1) flat wire is stood using automatic coil winding machine and turns to spiral enamel wire coil
2) epoxy silicone, mercapto hydroxypropyl methyl dimethoxysilane, the methanediamine of isophthalic two are pressed into 7:1:2 weight is than mixing
Stir, obtain high-temperature resin glue；
3) ferromagnetic powder is pressed into 94 with the high-temperature resin glue:6 weight obtains magnetic coupling material than mixing and stirring
Material, the ferromagnetic powder be by -100 mesh～200 mesh, -200 mesh～500 mesh, three kinds of grain size categories of -500 mesh iron silica flour by 2:3:
5 ratio is mixed；
4) magnetic composite is expelled in semi-annular mould, two semi-circular shape magnetic cores is poured into a mould respectively,
The demoulding after 130 DEG C of solidification 2h, obtains two identical semi-circular shape magnetic cores；
5) the spiral helicine enamel wire coil is inserted in respectively in two semi-circular shape magnetic cores, then with glue by two
Semi-annular magnetic core is merged into a circle ring magnetic core, that is, make the high-power annular reactor.
Embodiment 2
A kind of high-power annular reactor, including magnetic core 1 and coil 2, the magnetic core 1 is by two identical semicircular rings
The toroidal cores that shape magnetic core is formed by fixedly connecting by glue, the section of the semicircular ring magnetic core is circle, the annular magnetic
A diameter of 15 inches of core, the magnet density of the toroidal cores is 5.9g/cm3, the coil 2 is enclosed within two semicircles
On toroidal core, the coil 2 is to turn to spiral enamel wire coil by flat wire is vertical, and the semi-circular shape magnetic core is
The magnetic composite being made up of ferromagnetic powder and high-temperature resin glue is poured by semi-annular mould to be made.
Above-mentioned high-power annular reactor is being fabricated by by the following method, is comprised the following steps：
1) flat wire is stood using automatic coil winding machine and turns to spiral enamel wire coil
2) epoxy silicone, mercapto hydroxypropyl methyl dimethoxysilane, the methanediamine of isophthalic two are pressed into 75:7:18 weight is than mixed
Conjunction stirs, and obtains high-temperature resin glue；
3) ferromagnetic powder is pressed into 9 with the high-temperature resin glue:1 weight obtains magnetic composite than mixing and stirring,
The ferromagnetic powder be by -100 mesh～200 mesh, -200 mesh～500 mesh, three kinds of grain size categories of -500 mesh iron silica flour by 25:35:
40 ratio is mixed；
4) magnetic composite is expelled in semi-annular mould, two semi-circular shape magnetic cores is poured into a mould respectively,
The demoulding after 125 DEG C of solidification 2.5h, obtains two identical semi-circular shape magnetic cores；
5) the spiral helicine enamel wire coil is inserted in respectively in two semi-circular shape magnetic cores, then with glue by two
Semi-annular magnetic core is merged into a circle ring magnetic core, that is, make the high-power annular reactor.
Embodiment 3
A kind of high-power annular reactor, including magnetic core 1 and coil 2, the magnetic core 1 is by two identical semicircular rings
The toroidal cores that shape magnetic core is formed by fixedly connecting by glue, the section of the semicircular ring magnetic core is circle, the annular magnetic
A diameter of 7 inches of core, the magnet density of the toroidal cores is 5.5g/cm3, the coil 2 is enclosed within two semicircles
On toroidal core, the coil 2 is to turn to spiral enamel wire coil by flat wire is vertical, and the semi-circular shape magnetic core is
The magnetic composite being made up of ferromagnetic powder and high-temperature resin glue is poured by semi-annular mould to be made.
Above-mentioned high-power annular reactor is being fabricated by by the following method, is comprised the following steps：
1) flat wire is stood using automatic coil winding machine and turns to spiral enamel wire coil
2) epoxy silicone, mercapto hydroxypropyl methyl dimethoxysilane, the methanediamine of isophthalic two are pressed into 80:5:15 weight is than mixed
Conjunction stirs, and obtains high-temperature resin glue；
3) ferromagnetic powder is pressed into 88 with the high-temperature resin glue:12 weight obtains magnetic coupling material than mixing and stirring
Material, the ferromagnetic powder be by -100 mesh～200 mesh, -200 mesh～500 mesh, three kinds of grain size categories of -500 mesh iron silica flour by 3:4:
3 ratio is mixed；
4) magnetic composite is expelled in semi-annular mould, two semi-circular shape magnetic cores is poured into a mould respectively,
The demoulding after 140 DEG C of solidification 1.5h, obtains two identical semi-circular shape magnetic cores；
5) the spiral helicine enamel wire coil is inserted in respectively in two semi-circular shape magnetic cores, then with glue by two
Semi-annular magnetic core is merged into a circle ring magnetic core, that is, make the high-power annular reactor.
Embodiment 4
A kind of high-power annular reactor, including magnetic core 1 and coil 2, the magnetic core 1 is by two identical semicircular rings
The toroidal cores that shape magnetic core is formed by fixedly connecting by glue, the section of the semicircular ring magnetic core is circle, the annular magnetic
A diameter of 7 inches of core, the magnet density of the toroidal cores is 6.0g/cm3, the coil 2 is enclosed within two semicircles
On toroidal core, the coil 2 is to turn to spiral enamel wire coil by flat wire is vertical, and the semi-circular shape magnetic core is
The magnetic composite being made up of ferromagnetic powder and high-temperature resin glue is poured by semi-annular mould to be made.
Above-mentioned high-power annular reactor is being fabricated by by the following method, is comprised the following steps：
1) flat wire is stood using automatic coil winding machine and turns to spiral enamel wire coil
2) epoxy silicone, mercapto hydroxypropyl methyl dimethoxysilane, the methanediamine of isophthalic two are pressed into 7:1:2 weight is than mixing
Stir, obtain high-temperature resin glue；
3) ferromagnetic powder is pressed into 9 with the high-temperature resin glue:1 weight obtains magnetic composite than mixing and stirring,
The ferromagnetic powder be by -100 mesh～200 mesh, -200 mesh～500 mesh, three kinds of grain size categories of -500 mesh iron nickel powder by 2:3:5
Ratio is mixed；
4) magnetic composite is expelled in semi-annular mould, two semi-circular shape magnetic cores is poured into a mould respectively,
The demoulding after 130 DEG C of solidification 2h, obtains two identical semi-circular shape magnetic cores；
5) the spiral helicine enamel wire coil is inserted in respectively in two semi-circular shape magnetic cores, then with glue by two
Semi-annular magnetic core is merged into a circle ring magnetic core, that is, make the high-power annular reactor.
The reactor of same size is manufactured according to the methods described of embodiment 1～4, with traditional iron core reactor electric property is done
Contrast test, obtains following table data：
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of spirit or essential attributes without departing substantially from the present invention, the present invention can be in other specific forms realized.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as and limit involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity those skilled in the art should
Using specification as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art
Understandable other embodiment.
Claims (5)
1. a kind of high-power annular reactor, including magnetic core and coil, it is characterised in that the magnetic core is by two identicals
The toroidal cores of semi-circular shape core combination, a diameter of 7～20 inches of the toroidal cores, the annular magnetic
The magnet density of core is 5.5g/cm3～6.2g/cm3, the coil is enclosed within two semi-circular shape magnetic cores, and the coil is
Turn to spiral enamel wire coil by flat wire is vertical, the semi-circular shape magnetic core be by ferromagnetic powder and high-temperature resin glue by
The magnetic composite of 88～94wt% of ferromagnetic powder, 6～12wt% of high-temperature resin glue mixing composition is poured by semi-annular mould
Build and make, the high-temperature resin glue be by modified epoxy 70～80wt% of silicones, mercapto hydroxypropyl methyl dimethoxysilane 5～
10wt%, the 15～20wt% of methanediamine of isophthalic two constitute, the ferromagnetic powder be by -100 mesh～200 mesh, -200 mesh～500 mesh, -
The ferromagnetic powder of 500 three kinds of grain size categories of mesh is mixed in the ratio of 20～30wt%, 30～40wt%, 30～50wt%, institute
Ferromagnetic powder is stated for iron silica flour or iron nickel powder.
2. high-power annular reactor according to claim 1, it is characterised in that of the semi-circular shape magnetic core
The center of end face offers cylinder shape groove, and another end face of the semi-circular shape magnetic core is provided centrally with and the cylinder
The cylindrical boss that connected in star coordinates.
3. high-power annular reactor according to claim 1, it is characterised in that the section of the semicircular ring magnetic core is
It is circular or oval.
4. high-power annular reactor according to claim 1, it is characterised in that：Two semi-circular shape magnetic cores lead to
Cross glue to be fixedly connected.
5. a kind of manufacture method of high-power annular reactor, it is characterised in that comprise the following steps：
1) coiling enamel wire coil is in the shape of a spiral；
2) by modified epoxy 70～80wt% of silicones, mercapto hydroxypropyl methyl 5～10wt% of dimethoxysilane, the methanediamine of isophthalic two
15～20wt% mixing and stirrings, obtain high-temperature resin glue；
3) ferromagnetic powder and the high-temperature resin glue are pressed into 88～94wt% of ferromagnetic powder, 6～12wt% of high-temperature resin glue to mix
Uniformly, magnetic composite is obtained, the ferromagnetic powder is by -100 mesh～200 mesh, -200 mesh～500 mesh, three kinds of grains of -500 mesh
The ferromagnetic powder of degree grade is mixed in the ratio of 20～30wt%, 30～40wt%, 30～50wt%, and the ferromagnetic powder is iron
Silica flour or iron nickel powder；
4) magnetic composite is expelled in semi-annular mould, two semi-circular shape magnetic cores is poured into a mould respectively, 125～
The demoulding after 140 DEG C of 1.5～2.5h of solidification, obtains two identical semi-circular shape magnetic cores；
5) the spiral helicine enamel wire coil is inserted in respectively in two semi-circular shape magnetic cores, then with glue by two semicircles
Ring type magnetic core is merged into a circle ring magnetic core, that is, make the high-power annular reactor.
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| WO2016192092A1 (en) * | 2015-06-04 | 2016-12-08 | 深圳市铂科磁材有限公司 | Novel high-power annular reactor and manufacturing method therefor |
| CN106653272A (en) * | 2017-02-08 | 2017-05-10 | 久利科技（苏州）有限公司 | Annular sensor with high radiating capacity and flat wires wound in upright manner and method for preparing annular sensor |
| CN107578872B (en) * | 2017-08-10 | 2019-10-22 | 深圳市铂科新材料股份有限公司 | A kind of preparation method of metal soft magnetic powder core resistant to high temperature heat treatment |
| CN107464650A (en) * | 2017-08-10 | 2017-12-12 | 深圳市铂科新材料股份有限公司 | A kind of metal soft magnetic powder core of high temperature heat-resistant processing |
| CN108962546A (en) * | 2018-08-30 | 2018-12-07 | 上海羿煜电子科技有限公司 | A kind of heavy-current inductor |
| CN112652437A (en) * | 2021-01-15 | 2021-04-13 | 江苏瑞德磁性材料有限公司 | Preparation method of metal soft magnetic powder core with low forming pressure and high production efficiency |
| CN113096951A (en) * | 2021-04-09 | 2021-07-09 | 江苏瑞德磁性材料有限公司 | Preparation method of annular metal soft magnetic powder core with circular cross section |
| CN113096950A (en) * | 2021-04-09 | 2021-07-09 | 江苏瑞德磁性材料有限公司 | Preparation method of soft magnetic powder core with built-in coil |
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| JP2002373811A (en) * | 2001-06-15 | 2002-12-26 | Toyota Industries Corp | Core, core coil, and transformer |
| CN101710535B (en) * | 2009-12-15 | 2012-09-05 | 焦海波 | Preparing method of magnetic ring for reactor |
| JP5958792B2 (en) * | 2012-01-24 | 2016-08-02 | 住友電気工業株式会社 | Reactor, converter, and power converter |
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