CN109148100A - A kind of superelevation super large nanocrystalline magnet core and its manufacturing method - Google Patents
A kind of superelevation super large nanocrystalline magnet core and its manufacturing method Download PDFInfo
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- CN109148100A CN109148100A CN201810917147.5A CN201810917147A CN109148100A CN 109148100 A CN109148100 A CN 109148100A CN 201810917147 A CN201810917147 A CN 201810917147A CN 109148100 A CN109148100 A CN 109148100A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/25—Magnetic cores made from strips or ribbons
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
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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
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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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Abstract
The invention discloses a kind of superelevation super large nanocrystalline magnet cores, including core body, core body includes stainless steel shield box, cover board and multiple short magnetic cores, the height of core body is 68 ~ 162mm, outer diameter is 512 ~ 1220mm, 388 ~ 980mm of internal diameter, weight is 38 ~ 178 kilograms, short magnetic core selects Fe-based nanocrystalline magnetically soft alloy to be made, its height is 20 ~ 30mm, and mutually insulated between multiple short magnetic cores, the initial permeability of core body is greater than 80,000, its clear height ratio is greater than 88%, core body is made of Fe-based nanocrystalline magnetically soft alloy, it is that band is got rid of using single roller, wound core, vacuum subsequent annealing and it is mobile stack and etc. manufacture.The present invention stacks assembling technique by distinctive, it realizes the movement of big specification magnetic core after annealing to stack, is placed in same shield box, insulate between magnetic core, magnetic property does not decline, and obtains the iron-base nanometer crystal alloy magnetic core of superelevation with high magnetic property, super large-scale.
Description
Technical field
The invention belongs to transformer core technical fields, and in particular to a kind of iron-base nanometer crystal alloy magnetic core of superelevation super large
And its manufacturing method.
Background technique
Fe-based nanocrystalline magnetically soft alloy is mutual in high-precision because of initial permeability and extremely low core loss with superelevation
Sensor field is widely used.Iron-base nanometer crystal alloy is a kind of tool obtained after subsequent annealing by amorphous alloy
Have an alloy of nano-crystalline and amorphous double structure, nanometer crystal alloy magnetic core be usually by amorphous alloy ribbon after winding,
Obtained from carrying out subsequent annealing in vacuum drying oven, since the density of nanometer crystal alloy is higher than amorphous alloy, in subsequent annealing
In the process, magnetic core can generate about 4% contraction.If magnetic core size is excessive, once magnetic core Amorphous Crystallization heat release is uneven, i.e.,
Keep whole furnace temperature consistent, but for magnetic core, temperature meeting difference everywhere is very big, and the contraction of magnetic core everywhere is different, can lead
Phenomena such as causing magnetic core to generate external waviness and edge curl, causes the magnetic conductivity of magnetic core to be decreased obviously, so current is nanocrystalline
The outer diameter of alloy core is generally less than 500mm, is highly less than 60mm.
With the development in high-voltage mutual inductor field, industry, which proposes, to be required to manufacture higher, bigger nanometer crystal alloy magnetic core.
The non-crystal belt making for being limited to current nanocrystalline industry is horizontal, and the nanocrystalline width with amorphous thin ribbon is generally no more than 60mm, and
It is easiest to manufacture with the amorphous thin ribbon of 20-30mm.The high magnetic conducting nanocrystalline alloy magnetic core prepared after annealing is especially sensitive to stress,
It generally requires in shield box, be just able to achieve mobile and stack, and for ultra-large type magnetic core, if not protecting box, it is desirable to realize
Movement is a difficult thing.Height is more than that the nanometer crystal alloy magnetic core of 60mm usually first manufactures multiple shorter magnetic cores,
Each magnetic core is placed in a shield box, then will include that the shield stacking cassette of magnetic core, being bolted together to form the magnetic core of a superelevation.
Since shield box has certain thickness, also needs that there are certain intervals between magnetic core and shield box, will lead to magnetic core clear height ratio in this way (i.e.
The ratio of magnetic core free height and total height) less than 82%, the use of copper wire is wound when causing the waste in space, and manufacturing mutual inductor
Amount will increase.In consideration of it, it is necessary to make improvement to traditional superelevation super large nanocrystalline magnet core.
Summary of the invention
To solve the deficiencies in the prior art, it is an object of the invention to a kind of nanocrystalline magnet core of superelevation super large and its manufactures
Method.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of superelevation super large nanocrystalline magnet core, including core body, core body include stainless steel shield box, cover board and multiple short magnetic
Core, the height of core body are 68 ~ 162mm, and outer diameter is 512 ~ 1220mm, and 388 ~ 980mm of internal diameter, weight is 38 ~ 178 kilograms.
Preferably, the initial permeability of aforementioned core body is greater than 80,000.
More preferably, aforementioned short magnetic core selects Fe-based nanocrystalline magnetically soft alloy to be made, and height is 20 ~ 30mm, and multiple
Mutually insulated between short magnetic core.
It is highly preferred that the clear height ratio of aforementioned core body is greater than 88%.
It is further preferred that a kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large above-mentioned, including such as
Lower step:
S1, amorphous thin ribbon is prepared using melt spinning；
S2, amorphous thin ribbon is wound into circlewise short magnetic core；
S3, short magnetic core is carried out to annealing under vacuum conditions, removes vacuum after cooling and comes out of the stove；
S4, one layer of silicon rubber is uniformly coated in stainless steel shield cassette bottom portion, using a shape and the short consistent electromagnetism in magnetic core end face
Iron picks up short magnetic core, puts down gently on the silastic-layer in stainless steel shield box；
S5, one layer of silicon rubber is uniformly coated in another end face of short magnetic core put well, then using shape and short magnetic core end face
Consistent electromagnet picks up second short magnetic core, and movement is stacked on first short magnetic core；
S6, the step of S5 is repeated, until the short magnetic core in stainless steel shield box reaches required height；
S7, one layer of silicon rubber is uniformly coated on one layer of top of short magnetic core end face, between short magnetic core and stainless steel shield box
Silicon rubber is also filled up in gap, is parched rear cover upper cover plate to glue, is obtained nanometer crystal alloy magnetic core product.
Preferably, in abovementioned steps S1, amorphous thin ribbon with a thickness of 30 ± 2 μm, width is 20 ~ 30mm.
More preferably, in abovementioned steps S2, the mold of winding selects wood production.
It is highly preferred that in above mentioned step S3, the condition of annealing are as follows: keep the temperature 120 at 465 ~ 475 DEG C ~
180min, then 540 ~ 550 DEG C are warming up to, keep the temperature 150 ~ 180 min.
It is further preferred that the aforementioned heating rate for being warming up to 540 ~ 550 DEG C of periods is less than 0.3 DEG C/min.
Specifically, in abovementioned steps S4 and S5, electromagnet end face is manufactured using electrical pure iron.
The invention has the beneficial effects that:
(1) present invention is by the slow uniform release of control amorphous latent heat, and volume contraction is to soft magnetism when slowing down Amorphous Crystallization
The influence of energy can manufacture the ultra-large type nanocrystalline magnet core that outer diameter is 500 ~ 1200mm, and the initial permeability of magnetic core reaches 80,000
More than；
(2) stacking system by movement can satisfy the manufacture requirement of super-huge high-voltage mutual inductor, manufactured ultra-high ultra-large
The free height of nanocrystalline magnet core and the ratio of total height are greater than 88%, better than current 82%；
(3) the ultra-high ultra-large nanocrystalline magnet core manufactured only needs a stainless steel shield box, saves not steel rust materials；
(4) ultra-large type magnetic core can be uniformly sucked by electromagnet, and indeformable, to realize that ultra-large type nanocrystalline magnet core exists
Movement after annealing stacks, and initial permeability does not decline substantially.
Detailed description of the invention
Fig. 1 is the sectional view of the iron-base nanometer crystal alloy magnetic core of superelevation super large in the embodiment of the present invention.
The meaning of appended drawing reference in figure: 1, stainless steel protects box, 2, short magnetic core, 3, cover board.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
Embodiment 1
A kind of superelevation super large nanocrystalline magnet core, including core body, core body include that stainless steel shield box 1, cover board 3 and 4 are short
Magnetic core 2, the height of core body are 130mm, outer diameter 815mm, internal diameter 585mm, and weight is 178 kilograms.Short magnetic core 2 is selected
Fe-based nanocrystalline magnetically soft alloy is made, height 30mm, and mutually insulated between multiple short magnetic cores 2.Stainless steel protects 1 size of box
For outer diameter 815mm, internal diameter 585mm, height 127.5mm, wall thickness 2.5mm, material is 304 stainless steels.Cover board 3 is ring-type, outer diameter
815mm, internal diameter 585mm, thickness 2.5mm, material are epoxy resin.
A kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large, includes the following steps:
S1, prepare amorphous thin ribbon using melt spinning, amorphous thin ribbon with a thickness of 30 ± 2 μm, width 30mm；
S2, by amorphous thin ribbon winding, circlewise short magnetic core 2, the size of ring-shaped magnetic core are outer diameter 820mm, internal diameter 620mm, height
30mm, winding mould select wood production；
S3, short magnetic core 2 is subjected to annealing under vacuum conditions, keeps the temperature 180min at 470 DEG C, then with 0.3 DEG C/
The rate of min is warming up to 540 DEG C, keeps the temperature 180 min, removes vacuum after cooling and come out of the stove；；The size of ring-shaped magnetic core is about after cooling
For outer diameter 800mm, internal diameter 600mm, height 30mm；
S4, one layer of silicon rubber is uniformly coated in stainless steel shield 1 bottom of box, using a shape and the consistent electricity in short 2 end face of magnetic core
Magnet picks up short magnetic core 2, puts down gently on the silastic-layer in stainless steel shield box 1；Electromagnet end face is manufactured using electrical pure iron；
S5, one layer of silicon rubber is uniformly coated in another end face of short magnetic core 2 put well, then using shape and short 2 end of magnetic core
The consistent electromagnet in face picks up second short magnetic core 2, and movement is stacked on first short magnetic core 2；
S6, the step of S5 is repeated, until the short magnetic core 2 in stainless steel shield box 1 reaches required height；
S7, one layer of silicon rubber is uniformly coated on one layer of top of 2 end face of short magnetic core, between short magnetic core 2 and stainless steel shield box 1
Gap in also fill up silicon rubber, parch rear cover upper cover plate 3 to glue, obtain nanometer crystal alloy magnetic core product.
Embodiment 2
A kind of superelevation super large nanocrystalline magnet core, including core body, core body include that stainless steel shield box 1, cover board 3 and 5 are short
Magnetic core 2, the height of core body are 162mm, outer diameter 512mm, internal diameter 388mm, 74.7 kilograms of weight.Short magnetic core 2 selects iron
Base nanometer crystal magnetically soft alloy is made, and height is 20 ~ 30mm, and mutually insulated between multiple short magnetic cores 2.Stainless steel protects 1 ruler of box
Very little is outer diameter 512mm, internal diameter 388mm, height 159.5mm, and wall thickness 2.5mm, material is 304 stainless steels.Cover board 3 is ring-type, outside
Diameter 512mm, internal diameter 388mm, thickness 2.5mm, material are epoxy resin.
A kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large, includes the following steps:
S1, prepare amorphous thin ribbon using melt spinning, amorphous thin ribbon with a thickness of 30 ± 2 μm, width is 20 ~ 30mm；
S2, by amorphous thin ribbon winding, circlewise short magnetic core 2, the size of cyclic annular short magnetic core 2 are outer diameter 512mm, internal diameter 412mm, height
30mm is spent, winding mould selects wood production；
S3, short magnetic core 2 is subjected to annealing under vacuum conditions, keeps the temperature 120min at 475 DEG C, then with 0.3 DEG C/
The rate of min is warming up to 550 DEG C, keeps the temperature 150min, removes vacuum after cooling and come out of the stove；
S4, one layer of silicon rubber is uniformly coated in stainless steel shield 1 bottom of box, using a shape and the consistent electricity in short 2 end face of magnetic core
Magnet picks up short magnetic core 2, puts down gently on the silastic-layer in stainless steel shield box 1；Electromagnet end face is manufactured using electrical pure iron；
S5, one layer of silicon rubber is uniformly coated in another end face of short magnetic core 2 put well, then using shape and short 2 end of magnetic core
The consistent electromagnet in face picks up second short magnetic core 2, and movement is stacked on first short magnetic core 2；
S6, the step of S5 is repeated, until the short magnetic core 2 in stainless steel shield box 1 reaches required height；
S7, one layer of silicon rubber is uniformly coated on one layer of top of 2 end face of short magnetic core, between short magnetic core 2 and stainless steel shield box 1
Gap in also fill up silicon rubber, parch rear cover upper cover plate 3 to glue, obtain nanometer crystal alloy magnetic core product.
Embodiment 3
A kind of superelevation super large nanocrystalline magnet core, including core body, core body include that stainless steel shield box 1, cover board 3 and 2 are short
Magnetic core 2, the height of core body are 68mm, outer diameter 1220mm, internal diameter 980mm, and weight is 157.46 kilograms.Short magnetic core 2 selects
It is made of Fe-based nanocrystalline magnetically soft alloy, height 30mm, and mutually insulated between multiple short magnetic cores 2.Stainless steel protects 1 ruler of box
Very little is outer diameter 1220mm, internal diameter 980mm, height 65.5mm, and wall thickness 2.5mm, material is 304 stainless steels.Cover board 3 is ring-type, outside
Diameter 1220mm, internal diameter 980mm, thickness 2.5mm, material are epoxy resin.
A kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large, includes the following steps:
S1, prepare amorphous thin ribbon using melt spinning, amorphous thin ribbon with a thickness of 30 ± 2 μm, width 30mm；
S2, by amorphous thin ribbon winding circlewise short magnetic core 2, the size of cyclic annular short magnetic core 2 is outer diameter 1230mm, internal diameter 1030mm,
Height 30mm, winding mould select wood production；
S3, short magnetic core 2 is subjected to annealing under vacuum conditions, keeps the temperature 180min at 465 DEG C, then with 0.2 DEG C/
The rate of min is warming up to 540 DEG C, keeps the temperature 180 min, removes vacuum after cooling and come out of the stove；The size of ring-shaped magnetic core is about after cooling
Are as follows: outer diameter 1200mm, internal diameter 1000mm, height 30mm；
S4, one layer of silicon rubber is uniformly coated in stainless steel shield 1 bottom of box, using a shape and the consistent electricity in short 2 end face of magnetic core
Magnet picks up short magnetic core 2, puts down gently on the silastic-layer in stainless steel shield box 1；Electromagnet end face is manufactured using electrical pure iron；
S5, one layer of silicon rubber is uniformly coated in another end face of short magnetic core 2 put well, then using shape and short 2 end of magnetic core
The consistent electromagnet in face picks up second short magnetic core 2, and movement is stacked on first short magnetic core 2；
S6, the step of S5 is repeated, until the short magnetic core 2 in stainless steel shield box 1 reaches required height；
S7, one layer of silicon rubber is uniformly coated on one layer of top of 2 end face of short magnetic core, between short magnetic core 2 and stainless steel shield box 1
Gap in also fill up silicon rubber, parch rear cover upper cover plate 3 to glue, obtain nanometer crystal alloy magnetic core product.
Embodiment 4
A kind of superelevation super large nanocrystalline magnet core, including core body, core body include that stainless steel shield box 1, cover board 3 and 4 are short
Magnetic core 2, the height of core body are 100mm, outer diameter 800mm, internal diameter 600mm, and weight is 123.4 kilograms, core body
Initial permeability is greater than 80,000, and clear height ratio is greater than 88%.Short magnetic core 2 selects Fe-based nanocrystalline magnetically soft alloy to be made, and multiple short magnetic
Mutually insulated between core 2.
Nanometer crystal alloy magnetic core is that the short magnetic core 2 that 30mm and 2 height is 20mm stacks together by 2 height, stainless steel
Box 1 is protected having a size of outer diameter 815mm, internal diameter 585mm, height 107.5mm, wall thickness 2.5mm, material is 304 stainless steels.Cover board 3 is
Ring-type, outer diameter 816mm, internal diameter 584mm, thickness 2.5mm, material are epoxy resin.
A kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large, includes the following steps:
S1, prepare amorphous thin ribbon using melt spinning, amorphous thin ribbon with a thickness of 30 ± 2 μm, width is 30mm and 20mm；
S2, by amorphous thin ribbon winding, circlewise short magnetic core 2, the size of cyclic annular short magnetic core 2 are outer diameter 820mm, internal diameter 620mm, height
30mm and 20mm is spent, winding mould selects wood production；
S3, short magnetic core 2 is subjected to annealing under vacuum conditions, keeps the temperature 180min at 470 DEG C, then with 0.3 DEG C/
The rate of min is warming up to 540 DEG C, keeps the temperature 180 min, removes vacuum after cooling and come out of the stove；The size of ring-shaped magnetic core is about after cooling
Are as follows: outer diameter 800mm, internal diameter 600mm, height 30mm and 20mm；
S4, one layer of silicon rubber is uniformly coated in stainless steel shield 1 bottom of box, using a shape and the consistent electricity in short 2 end face of magnetic core
Magnet picks up short magnetic core 2, puts down gently on the silastic-layer in stainless steel shield box 1；Electromagnet end face is manufactured using electrical pure iron；
S5, one layer of silicon rubber is uniformly coated in another end face of short magnetic core 2 put well, then using shape and short 2 end of magnetic core
The consistent electromagnet in face picks up second short magnetic core 2, and movement is stacked on first short magnetic core 2；
S6, the step of S5 is repeated, until the short magnetic core 2 in stainless steel shield box 1 reaches required height；
S7, one layer of silicon rubber is uniformly coated on one layer of top of 2 end face of short magnetic core, between short magnetic core 2 and stainless steel shield box 1
Gap in also fill up silicon rubber, parch rear cover upper cover plate 3 to glue, obtain nanometer crystal alloy magnetic core product.
Embodiment 5
A kind of superelevation super large nanocrystalline magnet core, including core body, core body include that stainless steel shield box 1, cover board 3 and 3 are short
Magnetic core 2, the height of core body are 75mm, outer diameter 500mm, internal diameter 400mm, and weight is 29.8 kilograms.Short magnetic core 2 selects iron
Base nanometer crystal magnetically soft alloy is made, height 25mm, and mutually insulated between multiple short magnetic cores 2.
Stainless steel protects box 1 having a size of outer diameter 512mm, internal diameter 388mm, height 82.5mm, wall thickness 2.5mm, and material is not 304 not
Become rusty steel.Cover board 3 is ring-type, and outer diameter 513mm, internal diameter 387mm, thickness 2.5mm, material is epoxy resin.
A kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large, includes the following steps:
S1, prepare amorphous thin ribbon using melt spinning, amorphous thin ribbon with a thickness of 30 ± 2 μm, width 25mm；
S2, by amorphous thin ribbon winding, circlewise short magnetic core 2, the size of cyclic annular short magnetic core 2 are outer diameter 512mm, internal diameter 412mm, height
30mm is spent, winding mould selects wood production；
S3, short magnetic core 2 is subjected to annealing under vacuum conditions, 120min is kept the temperature at 475 DEG C, with 0.3 DEG C/min
Rate be warming up to 550 DEG C, keep the temperature 150 min, remove vacuum after cooling and come out of the stove；The size of ring-shaped magnetic core is about after cooling are as follows:
Outer diameter 500mm, internal diameter 400mm, height 30mm；
S4, one layer of silicon rubber is uniformly coated in stainless steel shield 1 bottom of box, using a shape and the consistent electricity in short 2 end face of magnetic core
Magnet picks up short magnetic core 2, puts down gently on the silastic-layer in stainless steel shield box 1；Electromagnet end face is manufactured using electrical pure iron；
S5, one layer of silicon rubber is uniformly coated in another end face of short magnetic core 2 put well, then using shape and short 2 end of magnetic core
The consistent electromagnet in face picks up second short magnetic core 2, and movement is stacked on first short magnetic core 2；
S6, the step of S5 is repeated, until the short magnetic core 2 in stainless steel shield box 1 reaches required height；
S7, one layer of silicon rubber is uniformly coated on one layer of top of 2 end face of short magnetic core, between short magnetic core 2 and stainless steel shield box 1
Gap in also fill up silicon rubber, parch rear cover upper cover plate 3 to glue, obtain nanometer crystal alloy magnetic core product.
Comparative example 1
A kind of super large nanocrystalline magnet core, including core body, core body include short magnetic core 2, cover board 3 and stainless steel shield box 1, magnetic
The outer diameter of core ontology is 815mm, and internal diameter 585mm, it is highly 37mm that weight, which is 50 kilograms,.
Stainless steel protects box 1 having a size of outer diameter 815mm, internal diameter 585mm, height 34.5mm, wall thickness 2.5mm, and material is not 304 not
Become rusty steel.Cover board 3 is ring-type, and outer diameter 815mm, internal diameter 585mm, thickness 2.5mm, material is epoxy resin.
A kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of super large, includes the following steps:
S1, prepare amorphous thin ribbon using melt spinning, amorphous thin ribbon with a thickness of 30 ± 2 μm, width 30mm；
S2, by amorphous thin ribbon winding, circlewise short magnetic core 2, the size of cyclic annular short magnetic core 2 are outer diameter 815mm, internal diameter 615mm, height
30mm is spent, winding mould selects wood production；
S3, short magnetic core 2 is subjected to annealing under vacuum conditions, 180min is kept the temperature at 470 DEG C, with 0.3 DEG C/min
Rate be warming up to 540 DEG C, keep the temperature 180 min, remove vacuum after cooling and come out of the stove；
S4, one layer of silicon rubber is uniformly coated in short 2 end face of magnetic core, is also filled up in the gap between short magnetic core 2 and stainless steel shield box 1
Silicon rubber parches rear cover upper cover plate 3 to glue, obtains nanometer crystal alloy magnetic core product.
Comparative example 2
A kind of conventional nano crystalline substance magnetic core, including magnetic core sheet, core body include DMC shield box and short magnetic core 2, the height of core body
For 34mm, outer diameter 81mm, internal diameter 43mm, weight is 0.592 kilogram.Box is protected having a size of outer diameter 81mm, internal diameter 43mm, height
34mm, material are DMC resin
A kind of manufacturing method of routine iron-base nanometer crystal alloy magnetic core, includes the following steps:
S1, prepare amorphous thin ribbon using melt spinning, amorphous thin ribbon with a thickness of 30 ± 2 μm, width 30mm prepares amorphous
The mold of strip selects wood production；
S2, by amorphous thin ribbon winding, circlewise short magnetic core 2, the size of cyclic annular short magnetic core 2 are outer diameter 78mm, internal diameter 48mm, height
30mm, winding mould select wood production；
S3, short magnetic core 2 is subjected to annealing under vacuum conditions, 120min is kept the temperature at 480 DEG C, with 0.1 DEG C/min
Rate be warming up to 550 DEG C, keep the temperature 150 min, remove vacuum after cooling and come out of the stove；The size of cyclic annular short magnetic core 2 is about after cooling
Are as follows: outer diameter 77mm, internal diameter 47mm, height 30mm；
S4, one layer of silicon rubber is uniformly coated in short 2 end face of magnetic core, is fitted into DMC shield box, the system of magnetic core is completed after glue parches
It makes, obtains common iron-base nanometer crystal alloy magnetic core.
Magnetic core in embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5, comparative example 1 and comparative example 2 is done
Performance detection, the result is as follows:
From the data in the table, the clear height ratio of ultra-high ultra-large magnetic core of the invention can achieve 88% or more, be higher than comparative example 1
In shorter ultra-large type magnetic core, it is suitable with the numerical value of clear height ratio of the middle-size and small-size magnetic core of comparative example 2；Ultra-high ultra-large magnetic of the invention
The initial permeability of core can achieve 80,000 or more, the slightly below numerical value of ultra-large type magnetic core shorter in comparative example 1, in comparative example 2
The initial permeability of compact core can achieve 280,000 or so, but for ultra-large type magnetic core, initial permeability will be remarkably decreased；
Ultra-high ultra-large magnetic core of the invention is due to initial permeability with higher, even if input and output turn ratio is 1:1, smaller
Input current I when, it is also possible to obtain biggish output electromotive force V can satisfy the requirement of small no-load voltage ratio high-voltage mutual inductor.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (10)
1. a kind of superelevation super large nanocrystalline magnet core, including core body, which is characterized in that the core body includes stainless steel shield
Box, cover board and multiple short magnetic cores, the height of core body are 68 ~ 162mm, and outer diameter is 512 ~ 1220mm, 388 ~ 980mm of internal diameter,
Weight is 38 ~ 178 kilograms.
2. a kind of superelevation super large nanocrystalline magnet core according to claim 1, which is characterized in that the core body it is initial
Magnetic conductivity is greater than 80,000.
3. a kind of superelevation super large nanocrystalline magnet core according to claim 1, which is characterized in that the short magnetic core is selected iron-based
Nano-crystal soft magnetic alloy is made, and height is 20 ~ 30mm, and mutually insulated between multiple short magnetic cores.
4. a kind of superelevation super large nanocrystalline magnet core according to claim 1, which is characterized in that the clear height of the core body
Than being greater than 88%.
5. a kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large as described in any one of claim 1 ~ 4,
It is characterized by comprising the following steps:
S1, amorphous thin ribbon is prepared using melt spinning；
S2, amorphous thin ribbon is wound into circlewise short magnetic core；
S3, short magnetic core is carried out to annealing under vacuum conditions, removes vacuum after cooling and comes out of the stove；
S4, one layer of silicon rubber is uniformly coated in stainless steel shield cassette bottom portion, using a shape and the short consistent electromagnetism in magnetic core end face
Iron picks up short magnetic core, puts down gently on the silastic-layer in stainless steel shield box；
S5, one layer of silicon rubber is uniformly coated in another end face of short magnetic core put well, then using shape and short magnetic core end face
Consistent electromagnet picks up second short magnetic core, and movement is stacked on first short magnetic core；
S6, the step of S5 is repeated, until the short magnetic core in stainless steel shield box reaches required height；
S7, one layer of silicon rubber is uniformly coated on one layer of top of short magnetic core end face, between short magnetic core and stainless steel shield box
Silicon rubber is also filled up in gap, is parched rear cover upper cover plate to glue, is obtained nanometer crystal alloy magnetic core product.
6. a kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large according to claim 5, feature exist
In, in the step S1, amorphous thin ribbon with a thickness of 30 ± 2 μm, width is 20 ~ 30mm.
7. a kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large according to claim 5, feature exist
In in the step S2, the mold of winding selects wood production.
8. a kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large according to claim 5, feature exist
In, in the step S3, the condition of annealing are as follows: 120 ~ 180min is kept the temperature at 465 ~ 475 DEG C, then it is warming up to 540 ~
550 DEG C, keep the temperature 150 ~ 180 min.
9. a kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large according to claim 8, feature exist
In the heating rate during being warming up to 540 ~ 550 DEG C is less than 0.3 DEG C/min.
10. a kind of manufacturing method of the iron-base nanometer crystal alloy magnetic core of superelevation super large according to claim 5, feature exist
In in the step S4 and S5, electromagnet end face is manufactured using electrical pure iron.
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| CN101030473A (en) * | 2006-12-31 | 2007-09-05 | 中国兵器工业第五二研究所 | Nano-crystal soft magnetic wide frequency-band current sampler |
| CN203552878U (en) * | 2013-11-18 | 2014-04-16 | 赵宜泰 | Magnetic core structure of electric reactor |
| CN107045932A (en) * | 2017-03-07 | 2017-08-15 | 无锡巨龙硅钢股份有限公司 | A kind of iron core production line |
| CN107464649A (en) * | 2017-08-03 | 2017-12-12 | 江苏奥玛德新材料科技有限公司 | A kind of magnetic core with linear hysteresis curve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030473A (en) * | 2006-12-31 | 2007-09-05 | 中国兵器工业第五二研究所 | Nano-crystal soft magnetic wide frequency-band current sampler |
| CN203552878U (en) * | 2013-11-18 | 2014-04-16 | 赵宜泰 | Magnetic core structure of electric reactor |
| CN107045932A (en) * | 2017-03-07 | 2017-08-15 | 无锡巨龙硅钢股份有限公司 | A kind of iron core production line |
| CN107464649A (en) * | 2017-08-03 | 2017-12-12 | 江苏奥玛德新材料科技有限公司 | A kind of magnetic core with linear hysteresis curve |
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