CN105490400B - Axial magnetic field amorphous, nanocrystalline motor stator core and its manufacturing method - Google Patents
Axial magnetic field amorphous, nanocrystalline motor stator core and its manufacturing method Download PDFInfo
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- CN105490400B CN105490400B CN201510964663.XA CN201510964663A CN105490400B CN 105490400 B CN105490400 B CN 105490400B CN 201510964663 A CN201510964663 A CN 201510964663A CN 105490400 B CN105490400 B CN 105490400B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
Abstract
The invention discloses a kind of axial magnetic field amorphous, nanocrystalline motor stator core and its manufacturing method, this method to include the following steps：Wind annular element step, alloy strip steel rolled stock is wound to form the annular element with pre-determined inner diameter and outer diameter, wherein, with the progress of winding, constantly one layer binder of even application on a surface of the alloy strip steel rolled stock before winding, to bond the adjacent alloys tape layer for forming the annular element；Curing process step；Recess portion cutting step and annealing steps.The amorphous of this method manufacture, not only soft magnet performance is excellent for nanocrystalline alloy stator iron core, adhesive strength is high, but also simple production process, manufacturing cost are low.
Description
Technical field
The invention belongs to the magnetic circuit part fields of motor, and in particular to a kind of motor in axial magnetic field amorphous, nanocrystalline
Alloy stator core and its manufacturing method, this kind of stator core are particularly suitable for application to require energy-efficient high frequency axial magnetic field
Motor.
Background technology
Since high frequency can bring the advantages such as high rotating speed, high power density and high torque density to motor, at present
As the development trend of motor.Numerous high-end applications fields such as electric vehicle, high-speed machine tool, high-speed fan, high-speed water, not only
It is required that motor has high efficiency, also require motor to high frequency, miniaturization, so electric machine frequency must be improved.However, passing
The silicon steel core of system motor increases sharply with the raising iron loss of frequency, seriously reduces electric efficiency, even due to generating heat seriously
Lead to not work normally.Amorphous, nanometer crystal alloy soft magnetic materials have the characteristics such as low-loss, high magnetic permeability, are expected to substituted for silicon
Steel material is applied to high-frequency electric machines stator core, and then increases substantially high-frequency electric machines performance.
Amorphous, nanometer crystal alloy band be usually with constant width, the continuous thin-band material of length direction, it is instant rolled around
Molding；Moreover, the trench structure of axial magnetic field iron core is simply easy to process.So amorphous, nanometer crystal alloy band are applied to axis
Advantage is had more to magnetic field electric motor stator core.
1998, the patent US005731649A of LE companies of the U.S. attempted the amorphous using dipping lacquer curing molding after winding
Block combination is at motor stator core, due to directly using teeth portion of the amorphous cylinder of winding as stator core, core interior
Vortex current constitute loop, cause iron loss larger.
2006, LE companies disclosed a kind of first using the side of curing molding after dipping lacquer in patent US7018498B2
Legal system makes annular amorphous alloy iron core, and the side of amorphous alloy stator iron core is then made in a face milling axial notch
Method.Since the amorphous nano-crystalline annular core obtained to winding carries out dipping lacquer, when especially axial length is larger, it is difficult to which resin is complete
The full interlayer gap for being immersed in amorphous, nanocrystalline annular core, causes that iron core layer insulation is ineffective, adhesive strength is inadequate,
It is easily broken when grooving, influence performance and yield rate；In order to make resin more adequately immerse the interlayer gap of iron core, Wound core
When lamination coefficient it is generally relatively low, control influences the power density of motor 0.75~0.85.The invention Pocket Machining uses
Milling method, there is dentalation on milling cutter surface, and amorphous, nanocrystalline iron core are again more crisp, so it is difficult to ensureing iron core slot
Section finish, influence performance.
2010, a kind of motor in axial magnetic field amorphous was also disclosed that in the patent CN101741153A of Amada Co., Ltd.
The production method of alloy stator core is produced annular amorphous alloy iron core using the method for curing molding after dipping lacquer first, is connect
And cut into the identical rodlike non-crystal block of multiple shapes and sizes in an axial direction, reuse discoid iron core holding member by this
A little rodlike non-crystal blocks are combined into stator core.This method make amorphous alloy stator iron core when be also first winding after dipping lacquer be solidified into
Type equally exists the problem of resin is difficult to be impregnated with completely, influence insulation effect and adhesion strength under high lamination coefficient.So volume
The cured method of dipping lacquer is difficult to make the axial magnetic field amorphous stator core of high lamination coefficient, especially axis after annular core
The both ends of the surface larger to length have amorphous, the nanocrystalline stator core of groove structure.
In conclusion the making of existing axial magnetic field Amorphous Metal Motor iron core be all made of winding after dipping lacquer curing molding again
The method of cut-in groove.This method makes axial magnetic field amorphous, nanocrystalline iron core, in order to ensure core interior amorphous or nanocrystalline
Gap between band can be more adequately by resin impregnated, and for lamination coefficient generally 0.80 or so, the power for influencing workpiece is close
Degree.If improving lamination coefficient, particularly with the iron core that axial length is larger, will be unable to ensure filling for core interior band gap
Sub-dip paint, will cause that layer insulation is bad, adhesion strength is inadequate, influence performance and cutting yield rate.
Invention content
In order to solve problem above existing in the prior art, the present invention provides a kind of axial magnetic field amorphous, nanocrystalline
Motor stator core and its manufacturing method.This method is in winding in amorphous or nanocrystalline strip surface spraying binder to make
Make annular core, after curing molding again with high speed grinding wheel cut-in groove to produce high-performance motor in axial magnetic field amorphous,
Nanocrystalline alloy stator iron core.Not only soft magnet performance is excellent, bonding is strong for amorphous, the nanocrystalline alloy stator iron core of this method manufacture
Degree is high, and simple production process, manufacturing cost are low.
To achieve the goals above, present invention employs following technical schemes：
A kind of axial magnetic field amorphous, nanocrystalline motor stator core, the iron core are amorphous or nanometer crystal alloy band
Torus made of multilayer-wound is evenly distributed with multiple recess portions on end face above and/or under the torus, forms the circle
Has adhesive layer between the adjacent amorphous or nanometer crystal alloy band layer of ring body.
In above-mentioned axial magnetic field amorphous, nanocrystalline motor stator core, the amorphous as a preferred implementation manner,
Or the material of nanometer crystal alloy band is ferrous alloy, iron nickel base alloy or cobalt-base alloys.
In above-mentioned axial magnetic field amorphous, nanocrystalline motor stator core, it is located at as a preferred implementation manner, same
Central axis upright of the horizontal center line of the multiple recess portion on end face with the iron core intersects at same point.
In above-mentioned axial magnetic field amorphous, nanocrystalline motor stator core, as a preferred implementation manner, when the circle
When the upper and lower end face of ring body is distributed with recess portion, positioned at the upper surface recess portion vertical centerline and be correspondingly situated at down
The vertical centerline of the recess portion of end face overlaps.
In above-mentioned axial magnetic field amorphous, nanocrystalline motor stator core, the bonding as a preferred implementation manner,
The thickness of layer is 1-2 μm.
In above-mentioned axial magnetic field amorphous, nanocrystalline motor stator core, the recess portion as a preferred implementation manner,
Shape be rectangle.
The manufacturing method of above-mentioned axial magnetic field amorphous, nanocrystalline motor stator core, includes the following steps：
Annular element step is wound, width amorphous identical with the axial length of finished product stator core or nanocrystalline conjunction are used
The alloy strip steel rolled stock is wound to form the annular element with pre-determined inner diameter and outer diameter, wherein with winding by gold ribbon material
It carries out, constantly one layer binder of even application on a surface of the alloy strip steel rolled stock before winding, institute is formed with bonding
State the adjacent alloys tape layer of annular element；
The annular element is carried out curing process, to the annular element after being cured by curing process step；
Recess portion cutting step immerses the annular element after the solidification in coolant liquid, using high speed grinding wheel in the annular
Recess portion cutting is carried out above and/or under part on end face, to obtain the annular core with recess structure；
Annealing steps make annealing treatment the annular core with recess structure, fixed to obtain finished product motor
Sub- iron core.
In above-mentioned manufacturing method, an amorphous, the nanocrystalline strip that can be used when winding the annular element carry out
Winding, can also be wound using more than two amorphous, nanocrystalline strip simultaneously.
In above-mentioned manufacturing method, the binder for being sprayed at (i.e. band interlayer) between the adjacent two layers alloy strip steel rolled stock is necessary
370 DEG C or more of annealing temperature can be born, the binder can be that organic binder can also be inorganic binder, preferably
Ground, the organic binder are organic silicon glue, phenolic resin glue, urea-formaldehyde resin adhesive, heatproof epoxy glue, polyimides glue, institute
State the inorganic binder that inorganic binder is TW series, SL series or ZS series.
In above-mentioned manufacturing method, the thickness of a layer binder of the spraying is preferably 1-2 μm.
In above-mentioned manufacturing method, as a preferred implementation manner, in the winding annular element step, pass through raising
Tension when winding on band improves the lamination coefficient of the finished product motor stator core, and the lamination coefficient is 0.85-
0.95。
In above-mentioned manufacturing method, as a preferred implementation manner, in the curing process step, at the solidification
The temperature of reason is 90-300 DEG C.
In above-mentioned manufacturing method, as a preferred implementation manner, in the recess portion cutting step, when cutting described in
The rotating speed of grinding wheel is 10000-35000 revs/min, and the grinding wheel is completely disposed in coolant liquid.It is highly preferred that the cooling
Liquid is pure water, water base coolant liquid or oil base coolant liquid.
In above-mentioned manufacturing method, the thickness of the grinding wheel is consistent with recess portion well width as a preferred implementation manner,.
In above-mentioned manufacturing method, as a preferred implementation manner, in the annealing steps, the annealing is
It is carried out under nitrogen, hydrogen or inert gas (preferably argon gas) protective atmosphere.
In above-mentioned manufacturing method, as a preferred implementation manner, in the annealing steps, the annealing
Temperature is 300-600 DEG C, soaking time 0.5-5.0h.
The stator core being manufactured according to the invention has high lamination coefficient and low core loss, is suitably applied frequency
In the high-frequency electric machines of 400Hz or more, and frequency is higher, and the energy-saving effect of motor is more notable.Especially frequency reaches 800Hz or more
When, electric efficiency will be than using the motor of common silicon steel core to improve 3-10%.In addition, this production process is simple, manufacturing cost
It is low.
Description of the drawings
Fig. 1 is the amorphous of the present invention used with one fixed width, nanometer crystal alloy thin coiled stock is around with predetermined interior
The annular amorphous of outer diameter, the process schematic of nanometer crystal alloy annular element；
Fig. 2 be amorphous of the present invention using with one fixed width, nanometer crystal alloy thin coiled stock around with making a reservation for
The annular amorphous of internal-and external diameter, the schematic diagram of nanometer crystal alloy annular element；
Fig. 3 uses emery wheel cuts mode to annular amorphous, nanometer crystal alloy annular element end face grooving to be of the present invention
When the schematic diagram of cutting bin that uses；
Fig. 4 is of the present invention annular to annular amorphous, nanometer crystal alloy using emery wheel cuts mode in cutting bin
The process schematic of part end face grooving；
Fig. 5 is obtained for of the present invention slotted in two axial end faces of annular element using high speed grinding wheel cutting mode
The schematic diagram of the axial magnetic field amorphous, nano-crystalline alloy iron core that arrive；
Fig. 6 obtains for the axial end face fluting of the present invention using high speed grinding wheel cutting mode in annular element
Axial magnetic field amorphous, nano-crystalline alloy iron core schematic diagram.
Wherein, reference numeral is as follows：
1, the amorphous with one fixed width, nanocrystalline alloy strip material volume；
2, in the nozzle of strip surface spraying adhesive during winding annular core；
3, the obtained amorphous with certain internal-and external diameter, nanocrystalline annular element is wound；
4, the cutting bin used when emery wheel cuts groove；5, the locating cylinder of cutting bin bottom；
6, the coolant liquid used when cut-in groove；7, the grinding wheel saw blade used when cut-in groove；
8, the slot of axial magnetic field amorphous alloy stator iron core annular end face；
9, the tooth of axial magnetic field amorphous alloy stator iron core annular end；
10, two annular end faces all have the amorphous of axial notch structure, nanocrystalline iron core；
11, an annular end face all has the amorphous of axial notch structure, nanocrystalline iron core.
Specific implementation mode
In order to preferably explain the present invention, used below with reference to accompanying drawings fully to describe axial magnetic field according to the present invention
Stator core and its manufacturing method.
It is two kinds of axial magnetic field amorphous provided by the invention, nanocrystalline motor stator core, the iron with reference to Figures 5 and 6
Core is torus made of amorphous or nanometer crystal alloy band multilayer-wound, above and/or under the torus on end face
It is even that multiple recess portions are distributed with, it is formed between the adjacent amorphous or nanometer crystal alloy band layer of the torus with adhesive layer.
The material of the amorphous or nanometer crystal alloy band can be alloy commonly used in the art, and preferably iron-based closes
Gold, iron nickel base alloy or cobalt-base alloys may be used conventional band method of getting rid of and prepare, can also be obtained by commercially available channel.
The horizontal center line of the multiple recess portion on same end face with the central axis upright phase of the iron core
Meet at same point.It is teeth portion between two adjacent recesses on same end face.The multiple recess portion all has identical
Size and shape.If both ends of the surface offer recess portion, recess portion size, the shape all same of two end faces.Upper and lower ends face
The vertical centerline of corresponding two recess portion should be overlapped, i.e., when the upper and lower end face of the torus is distributed with recess portion
When, recess portion and the recess portion positioned at lower face for being located at the upper surface are opposite one by one.The shape of the recess portion can be this field
Any shape used in common iron core, preferably recess portion are rectangular recess.
The thickness of the adhesive layer is uniform, preferably 1-2 μm, and adhesive layer, that is, insulating layer of the thickness can both ensure to bond
Intensity, and the blocked up influence core lamination stack coefficient of adhesive layer can be prevented.
In the prior art, for the making of axial magnetic field Amorphous Metal Motor iron core, after usually adopting winding annular core
The method that dipping lacquer cures again cut-in groove.But if when the lamination coefficient of Wound core is higher, binder is difficult to be sufficiently submerged in
To the interlayer gap of iron core, cause adhesion strength is not high, layer insulation not enough, cutting when be easy the problems such as damaged.So general
Lamination coefficient is all relatively low, is controlled 0.75~0.85 according to axial length.In consideration of it, the present invention provides a kind of sides to wind ring
Shape iron core side strip surface spraying adhesive, reach after predetermined internal-and external diameter curing molding again emery wheel cuts groove, finally anneal
The method of the manufacture amorphous or nanocrystalline alloy stator iron core of processing.Be described in detail below above-mentioned axial magnetic field amorphous, receive
The manufacturing method of the brilliant motor stator core of rice, it is specific as follows：
The step of winding annular element, that is, torus, using width amorphous identical with the axial length of finished product stator core or
Person's nanometer crystal alloy band is rolled up, and rolls up the alloy strip steel rolled stock open and one layer of even application on a surface before winding first
Then binder is wound, each layer amorphous ribbon is made to be directly bonded to together, form annular core to form adjacent alloys band
Interlayer with adhesive layer and annular element with pre-determined inner diameter and outer diameter.
It may also be said that with the progress of winding, on a surface of the alloy strip steel rolled stock constantly opened before winding
One layer binder of even spraying is preferably sprayed on the inner surface for not winding the alloy strip steel rolled stock opened before i.e. winding, not roll up
Around and inner surface be bonded on the outer surface for the alloy strip steel rolled stock layer for having wound completion with the alloy strip steel rolled stock of binder, to be formed
Adjacent alloys band interlayer has the annular element of adhesive layer.
The annular element must be in Juan Huan in amorphous, the spraying of nanocrystalline strip surface synchronization in winding process
Binder, it is ensured that volume ring process synchronization is bonded together each layer band to form annular element.It, can be by adjusting in volume ring process
Tension on amorphous, nanocrystalline strip realizes the control to lamination coefficient, can since this method does not need subsequent dipping lacquer processing
Tension when with by increasing substantially volume ring on band realizes that higher core lamination stack coefficient, lamination coefficient can be increased to
0.85-0.95。
An amorphous, the nanocrystalline strip volume that can be used when winding the annular element are wound, can also be simultaneously
It is wound using more than two amorphous, nanocrystalline strip volume.It will be understood by those skilled in the art that non-crystaline amorphous metal, nanometer
Peritectic alloy is the magnetically soft alloy material of two kinds of different atomic structures, since both alloys are typically all the length with one fixed width
The continuous strip in direction is spent, the production method of iron core according to the present invention can be suitble to make using both soft magnetic alloy sheet-bands
Iron core.The iron core made using amorphous alloy ribbon is known as amorphous alloy iron core, and the iron core made using nanometer crystal alloy is known as
Nano-crystalline alloy iron core.
The binder for being sprayed at (i.e. band interlayer) between the adjacent two layers alloy strip steel rolled stock allows for bearing 370 DEG C or more
Annealing temperature, the binder can be that organic binder commonly used in the art can also be inorganic binder, it is preferable that institute
State organic binder be organic silicon glue, phenolic resin glue, urea-formaldehyde resin adhesive, heatproof epoxy glue, polyimides glue, it is described inorganic
Binder is the inorganic binder of TW series, SL series or ZS series.These binders are commercial product.
It it is preferably 1-2 μm in the thickness of amorphous, a layer binder of nanocrystalline strip surface spraying.
The annular element is carried out curing process, to the annular element after being cured by curing process step；
Specifically, in the curing process step, solidification temperature is determined according to the type of binder, and general control exists
Between 90-300 DEG C (such as 100 DEG C, 120 DEG C, 150 DEG C, 180 DEG C, 210 DEG C, 250 DEG C, 280 DEG C, 295 DEG C), hardening time and
The size of iron core is directly related, to ensure that the binder of core interior is fully cured as standard.
Groove cutting step immerses the annular element after the solidification in coolant liquid, using high speed grinding wheel in the annular
Groove cutting is carried out above and/or under part on end face, to obtain the annular core with groove structure；
In the groove cutting step, when cutting the rotating speed of the grinding wheel be 10000-35000 revs/min (such as
11000 revs/min, 15000 revs/min, 20000 revs/min, 21000 revs/min, 25000 revs/min, 30000 revs/min
Clock, 33000 revs/min, 34500 revs/min), and the grinding wheel and annular element are completely disposed in coolant liquid.It is highly preferred that
The coolant liquid is pure water, water base coolant liquid or oil base coolant liquid, is commercial product.The thickness of the grinding wheel and groove are wide
Degree b will be consistent, and the groove of cutting is open on three sides rectangle, i.e., up or down end face opening, annular element inner wall side opening and
Annular element outer wall side opening.
According to the present invention, the cutting processing mode is necessary for high speed or ultrahigh speed emery wheel cuts, the material of grinding wheel
A cube BN, SiC, Al2O3, diamond or hard ceramic can be selected, the thickness of grinding wheel must be with annular core facing groove
Width it is equal.The rotating speed of cutting process, grinding wheel must be controlled at 10000-30000 revs/min, when cutting rotating speed reaches
At 15000 revs/min or more, protection, which need not be fixed, using tooling fixture in annular core can directly cut groove profile.By
High temperature is will produce in high speed grinding wheel cutting process, the cutting surfaces burn of slot is be easy to cause, influences performance, so annular element and cutting
Cutting grinding wheel must be integrally placed in coolant liquid.
Annealing steps make annealing treatment the annular core with groove structure, to eliminate bond stress and cut
Stress is cut, high lamination coefficient, low-loss finished product motor stator core to be had excellent performance.
In the annealing steps, the annealing is protected in nitrogen, hydrogen or inert gas (preferably argon gas)
Carried out under atmosphere, the temperature of the annealing be 300 DEG C -600 DEG C (such as 305 DEG C, 350 DEG C, 380 DEG C, 410 DEG C, 450
DEG C, 480 DEG C, 520 DEG C, 550 DEG C, 570 DEG C, 590 DEG C), soaking time be 0.5-5.0h (such as 0.55h, 0.8h, 1.2h,
1.5h、2h、2.5h、3h、3.5h、4h、4.5h、4.8h)。
Motor in axial magnetic field amorphous that the method for the present invention obtains, nanocrystalline alloy stator iron core have very low iron core,
Be suitably applied frequency be higher than 400Hz single rotor or birotor axial magnetic field high-frequency electric machines, especially frequency reach 800Hz with
When upper, electric efficiency will be than using the motor of common silicon steel core to improve 3-10%.
Fig. 1, which is shown, is using width amorphous identical with the height of finished product stator core or nanometer crystal alloy band,
It is rewound to be formed with pre-determined inner diameter r1With predetermined outer diameter r2And the annular element 3 of axial height h.During rolling up ring,
An amorphous can be used, and either nanocrystalline alloy strip material volume carries out volume ring and can also use multiple amorphous or nanometer simultaneously
Peritectic alloy carrying material volume carries out volume ring, has used four amorphous or nanocrystalline alloy strip material volume to be rolled up simultaneously in Fig. 1
Ring.Also, spraying adhesive for convenience, all places a nozzle 2 near the inner surface of every strap before rolling up ring, uses
Binder is uniformly sprayed on amorphous or nanocrystalline strip surface, annular element is directly bonded to when to roll up ring.Due to non-
Brilliant material surface coats binder, need not subsequently carry out dipping lacquer processing, so tension when volume ring on band can be substantially
Degree improves, and then the lamination coefficient of annular core is made to significantly improve, and can reach 0.85-0.95, than the side of dipping lacquer again after winding
The core lamination stack coefficient that method makes can improve about 10%, that is to say, that the power density of the motor of making can be made to increase
10%.
After completing volume ring, curing process is carried out in certain temperature, the annular core after solidification is as shown in Fig. 2, at solidification
The temperature of reason is determined according to the type of binder.Next, annular core is positioned in cutting bin 4 as shown in Figure 3, cut
Storehouse is the cylinder of bottom lock, and in order to facilitate cutting operation, cutting bin radius r4 has to be larger than the radius r2 of annular element 3 and cuts
The sum of the diameter for cutting grinding wheel, that is, meet r4>r2+2r3.When cutting, referring to Fig. 4, coolant liquid 6 in cutting bin must will be annular
Part 3 and abrasive cut-off wheel 7 are totally submerged, to ensure that cutting process will not cause the burn on work piece cut surface, influence performance.
In 4 bottom center of cutting bin, one and the locating cylinder 5 of orlop face one are set, diameter and annular element internal diameter are equal,
Height h1 is set according to actual demand.If cutting the axial magnetic field iron core of Double End groove structure, h1 should be equal to groove 8
The sum of depth a and the axial length c in yoke portion, i.e. h1=a+c；If cutting the axial magnetic field iron of a fluted structure in end face
Core, h1 should be equal to iron core yoke part axial length c and h1=c.When cut-in groove, annular element 3 is placed on locating cylinder 5
Above.The recess width of the thickness and axial magnetic field iron core of selecting cutting grinding wheel 7 is equal, and the direction of emery wheel cuts is to be directed toward ring
The horizontal center line direction of the central axis of shape iron core, i.e., each cutting groove all points to the central axis of annular element.Cut-in groove
When, grinding wheel speed will be controlled at 10000-30000 revs/min, when cutting rotating speed reaches 15000 revs/min or more, annular iron
Core can save tooling fixture and directly cut trench structure, will not cause cracking or the breakage of workpiece, and cutting efficiency is high,
Cut surface smooth finish.If cutting Double End has the axial magnetic field stator core of groove structure, an end is first cut successively
The groove in face, then it is placed on the groove structure that another end face is cut on locating cylinder, upper and lower end face pair after overturning i.e. inversion
The size and shape for the slot answered is identical, and the horizontal center line of the corresponding slot in upper and lower end face is located on same perpendicular.Each
The water product center line of slot is directed to the central axes of annular core, these slots are evenly distributed on annular end face.
It after groove structure is cut, is made annealing treatment, eliminates bond stress and machining stress, keep axial magnetic field non-
Brilliant, nanocrystalline alloy stator iron core soft magnet performance reaches best.Annealing process need to protect gas in argon gas, nitrogen or hydrogen etc.
It is carried out under atmosphere.After annealing, amorphous, the nanometer crystal alloy finished product stator core of axial magnetic field have just been obtained, wherein obtain
Upper and lower end face all has the finished product stator core 10 of groove, referring to Fig. 5, has reeded finished product stator on an obtained end face
Iron core 11, referring to Fig. 6, the part between adjacent grooves is tooth 9.
Embodiment 1
In the present embodiment, fixed using method of the present invention making motor in axial magnetic field amorphous, nanometer crystal alloy
The method of sub- iron core is identical, it is only necessary to be replaced to corresponding thin-band material, and be selected according to the performance of different materials
Select different technological parameters, you can prepare the alloy stator core of the different materials such as amorphous, nanocrystalline.Therefore, below only with
For preparing amorphous alloy stator iron core, in conjunction with the accompanying drawings and embodiments, the specific implementation mode of the present invention is made further detailed
Description.
In the present embodiment, making the amorphous alloy strips name composition that motor is used with amorphous stator alloy-iron core is
Fe78Si9B13(at.%), thickness of strip is 25 ± 1 μm, width 80mm, and surfacing is bright and clean.To amorphous alloy strips and life
The method for producing this kind of alloy strip steel rolled stock is not particularly limited, the Fe that the present embodiment uses78Si9B13(at.%) alloy strip steel rolled stock is commercially available
Product.
Preparation in accordance with the present invention, the first step is as shown in Figure 1, in non-crystaline amorphous metal tape wrapping using the 80mm wide of volume four
The annular core of diameter 120mm, outer diameter 200mm.In winding process, while the inner wall of the amorphous band at every before winding is i.e. interior
Surface constantly sprays heatproof G-2021 epoxy resin glues, when outer diameter reaches 200mm, cuts 4 amorphous ribbons, has just obtained interior
The annular amorphous part of diameter 120mm, outer diameter 200mm, axial length 80mm.It is controlled and is drawn by the winding tension controlled on amorphous ribbon
The lamination coefficient of stress, annular core is controlled 0.92.Then curing process is carried out at 150 DEG C 180 minutes, just cured
Molding annular non-crystaline amorphous metal part.
Second step is as shown in figure 4, by the annular of the internal diameter 120mm of cured processing, outer diameter 200mm, axial length 80mm
Part is placed on the locating cylinder of cutting bin, is highly a diameter of 120mm of locating cylinder, 50mm.Grinding wheel thickness is
Annular element and cutting grinding wheel are completely submerged in by 6mm, a diameter of 100mm, depth of cut 30mm, coolant liquid depth 300mm
In the coolant liquid of pure water.When cutting, grinding wheel rotating speed is arranged at 20000 revs/min, and coolant liquid splashes in cutting bin in order to prevent
A lid can be added above.When the cutting of the slot of a width 6mm, depth 30mm finishes, annular element along the circumferential direction rotates
360 °/16=22.5 °, next slot is then cut, cutting out 16 on an end face of annular element successively is uniformly distributed width
The groove of 6mm, depth 30mm.Then, annular element is removed from locating cylinder, direction is exchanged in two end faces, then another
The slot of equally distributed 16 width 6mm, depth 30mm are circumferentially cut on a end face in the same way.Cutting second
When end face, i.e., the axial centre of the up and down respective slot of two end face corresponding with the position of the groove of first end face should be noted
Line should be conllinear.
Third step is made annealing treatment to the amorphous alloy stator iron core for being cut into groove, and the purpose of annealing is that elimination is non-
The machining stress introduced during the internal stress and fabrication of iron core of peritectic alloy band, further increases amorphous alloy stator iron
The soft magnet performance of core.
Heat treatment process is as follows：1) amorphous alloy stator iron core is put into furnace body, with 10 under the protection of nitrogen
DEG C/rate of heat addition of min is warming up to 370 DEG C, in temperature 120min；2) it and then when cooling to 100 DEG C or less with the furnace takes
Go out iron core.So far, the making of motor in axial magnetic field amorphous alloy stator iron core is completed.
Comparative example 1
The trade mark of 80mm wide is B35AV1900 by the first step, the silicon strip that thickness is 0.35mm is wound into internal diameter 120mm,
The annular silicon steel iron core of outer diameter 200mm, lamination coefficient are controlled 0.95.
Second step carries out vacuum paint dipping to the annular silicon steel iron core of internal diameter 120mm, outer diameter 200mm, axial length 80mm, will
Annular silicon steel iron core is completely submerged in G-2021 epoxy resin glues, is impregnated 4 hours at 5kPa, it is ensured that epoxy resin is complete
It is impregnated with.Then curing process is carried out at 150 DEG C 180 minutes, obtained annular silicon steel iron core.
Third walks as shown in figure 4, by the annular of the internal diameter 120mm of cured processing, outer diameter 200mm, axial length 80mm
Silicon steel core carries out groove cutting, and method is the same as embodiment 1.The Double End groove structure of comparative example 1 is obtained after the completion of groove cutting
Axial magnetic field silicon steel stator core sample.
Comparative example 2
The technique of 1 spraying adhesive of embodiment is omitted in this comparative example, forms the technique of adhesive layer, that is, insulating layer by right
The second step vacuum paint dipping of ratio 1 replaces, and lamination coefficient is also controlled 0.92, other processing steps are same as Example 1, thus
Obtain the Double End groove structure axial magnetic field amorphous alloy stator iron core sample of comparative example 2.
The axial magnetic field amorphous alloy stator iron core prepared by the method for the invention is with the trade mark made in comparative example 1
The axial magnetic field silicon steel stator core of B35AV1900 is compared, and core loss can reduce 85-95%.
The amorphous that the axial magnetic field amorphous alloy stator iron core prepared by the method for the invention is prepared with method in comparative example 2
Stator core is compared, and core loss can reduce by 50% or more.
Table 1 gives the stator core that the silicon steel sheet that the use trade mark is B35AV1900 makes of comparative example 1 and embodiment 1
The lossy data of amorphous alloy stator iron core, as can be seen from the table, the loss ratio silicon steel stator iron of amorphous alloy stator iron core
Core reduces 85-95%, and the power savings advantages of the higher amorphous alloy stator iron core of frequency are more apparent.As it can be seen that this method made
Axial magnetic field amorphous alloy stator iron core has very low core loss, and simple production process, period are short, at low cost, non-
It often is suitably applied high frequency motor in axial magnetic field, the efficiency, power density and torque density of motor can be improved.
The lossy data of the amorphous iron core that 1 embodiment of the present invention 1 of table makes and the stator core of comparative example 1 and comparative example 2
Comparison
Claims (14)
1. the manufacturing method of a kind of axial magnetic field amorphous, nanocrystalline motor stator core, which is characterized in that the axial magnetic field
The manufacturing method of amorphous, nanocrystalline motor stator core, includes the following steps：
Annular element step is wound, width amorphous identical with the axial length of finished product stator core or nanocrystalline alloy strip are used
Material, by the alloy strip steel rolled stock be wound with formed with pre-determined inner diameter and outer diameter annular element, wherein with winding into
It goes, constantly one layer binder of even application on a surface of the alloy strip steel rolled stock before winding, to bond described in formation
The adjacent alloys tape layer of annular element；The thickness of one layer binder of the spraying is 1-2 μm；
The annular element is carried out curing process, to the annular element after being cured by curing process step；
Recess portion cutting step immerses the annular element after the solidification in coolant liquid, using high speed grinding wheel in the annular element
Above and/or under recess portion cutting is carried out on end face, to obtain the annular core with recess structure；
Annealing steps make annealing treatment the annular core with recess structure, to obtain finished product motor stator iron
Core；The annealing carries out under nitrogen, hydrogen or inert gas shielding atmosphere；
In the winding annular element step, the finished product motor stator iron is improved by the tension on band when raising winding
The lamination coefficient of core, the lamination coefficient are 0.85-0.95.
2. the manufacturing method of a kind of axial magnetic field amorphous according to claim 1, nanocrystalline motor stator core, feature
Be, the iron core is torus made of amorphous or nanometer crystal alloy band multilayer-wound, the torus upper and/or
It is evenly distributed with multiple recess portions on lower face, is formed attached between the adjacent amorphous or nanometer crystal alloy band layer of the torus
There is adhesive layer.
3. the manufacturing method of axial magnetic field amorphous according to claim 2, nanocrystalline motor stator core, feature exist
In the material of the amorphous or nanometer crystal alloy band is ferrous alloy, iron nickel base alloy or cobalt-base alloys.
4. the manufacturing method of axial magnetic field amorphous according to claim 2, nanocrystalline motor stator core, feature exist
In being located at central axis upright of the horizontal center line with the motor stator core of the multiple recess portion on same end face
Intersect at same point.
5. the manufacturing method of axial magnetic field amorphous according to claim 2, nanocrystalline motor stator core, feature exist
In the thickness of the adhesive layer is 1-2 μm.
6. the manufacturing method of axial magnetic field amorphous according to claim 4, nanocrystalline motor stator core, feature exist
In, when the upper and lower end face of the torus is distributed with recess portion, be located at the upper surface recess portion vertical centerline with
The vertical centerline for being correspondingly situated at the recess portion of lower face overlaps.
7. the manufacturing method of axial magnetic field amorphous according to claim 5, nanocrystalline motor stator core, feature exist
In the shape of the recess portion is rectangle.
8. the manufacturing method of axial magnetic field amorphous according to claim 1, nanocrystalline motor stator core, feature exist
In the binder is organic binder or inorganic binder.
9. the manufacturing method of axial magnetic field amorphous according to claim 1, nanocrystalline motor stator core, feature exist
In in the curing process step, the temperature of the curing process is 90-300 DEG C.
10. the manufacturing method of axial magnetic field amorphous according to claim 1, nanocrystalline motor stator core, feature exist
In, in the recess portion cutting step, when cutting the rotating speed of the grinding wheel be 10000-35000 revs/min, and the grinding wheel
It is completely disposed in coolant liquid.
11. the manufacturing method of axial magnetic field amorphous according to claim 8, nanocrystalline motor stator core, feature exist
In the organic binder is organic silicon glue, phenolic resin glue, urea-formaldehyde resin adhesive, heatproof epoxy glue, polyimides glue, institute
State the inorganic binder that inorganic binder is TW series, SL series or ZS series.
12. axial magnetic field amorphous according to claim 9, nanocrystalline motor stator core, which is characterized in that the annealing
The temperature of processing is 300-600 DEG C, soaking time 0.5-5.0h.
13. the manufacturing method of axial magnetic field amorphous according to claim 10, nanocrystalline motor stator core, feature exist
In the coolant liquid is pure water, water base coolant liquid or oil base coolant liquid.
14. the manufacturing method of axial magnetic field amorphous according to claim 13, nanocrystalline motor stator core, feature exist
In the thickness of the grinding wheel is consistent with recess portion well width.
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| CN111478474B (en) * | 2020-06-01 | 2022-11-15 | 苏州英磁新能源科技有限公司 | Motor rotor for radial cylinder type permanent magnet synchronous motor and preparation method thereof |
| CN111478530A (en) * | 2020-06-01 | 2020-07-31 | 苏州英磁新能源科技有限公司 | Manufacturing process of radial flux cylinder type motor iron core |
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| JPS61285043A (en) * | 1985-06-07 | 1986-12-15 | Toshiba Corp | Manufacture of amorphous core for rotary electric machine |
| CN1788400A (en) * | 2002-09-05 | 2006-06-14 | 梅特格拉斯公司 | Method of constructing a unitary amorphous metal component for an electric machine |
| CN1839451A (en) * | 2003-06-11 | 2006-09-27 | 莱特工程公司 | Soft magnetic amorphous electromagnetic component and method for making the same |
| CN102510141A (en) * | 2011-10-31 | 2012-06-20 | 安泰科技股份有限公司 | Amorphous, microcrystalline or nano-crystalline alloy stator iron core for axial magnetic flux motor and manufacture method for stator iron core |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61285043A (en) * | 1985-06-07 | 1986-12-15 | Toshiba Corp | Manufacture of amorphous core for rotary electric machine |
| CN1788400A (en) * | 2002-09-05 | 2006-06-14 | 梅特格拉斯公司 | Method of constructing a unitary amorphous metal component for an electric machine |
| CN1839451A (en) * | 2003-06-11 | 2006-09-27 | 莱特工程公司 | Soft magnetic amorphous electromagnetic component and method for making the same |
| CN102510141A (en) * | 2011-10-31 | 2012-06-20 | 安泰科技股份有限公司 | Amorphous, microcrystalline or nano-crystalline alloy stator iron core for axial magnetic flux motor and manufacture method for stator iron core |
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