CN108962583A - A kind of heat treatment method, magnetic core and the mutual inductor of iron-based amorphous alloy ribbon material - Google Patents
A kind of heat treatment method, magnetic core and the mutual inductor of iron-based amorphous alloy ribbon material Download PDFInfo
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- CN108962583A CN108962583A CN201810824238.4A CN201810824238A CN108962583A CN 108962583 A CN108962583 A CN 108962583A CN 201810824238 A CN201810824238 A CN 201810824238A CN 108962583 A CN108962583 A CN 108962583A
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15308—Amorphous metallic alloys, e.g. glassy metals based on Fe/Ni
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15341—Preparation processes therefor
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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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- Power Engineering (AREA)
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- Electromagnetism (AREA)
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- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The present invention provides a kind of heat treatment methods of iron-based amorphous alloy ribbon material, comprising: irradiates iron-based amorphous alloy ribbon material using laser beam in moving process.Present invention also provides a kind of magnetic core, the iron-based amorphous alloy ribbon material obtained by above-mentioned heat treatment method is obtained using shearing, winding.Present invention also provides a kind of mutual inductors comprising above-mentioned magnetic core.The heat treatment method of iron-based amorphous alloy ribbon material provided by the present application realizes the balance of iron-based amorphous alloy ribbon material stress elimination Yu a large amount of free volumes, thereby ensures that the magnetic conductivity and toughness of magnetic core.
Description
Technical field
The present invention relates to magnetic core technical field more particularly to a kind of heat treatment method, the magnetic cores of iron-based amorphous alloy ribbon material
With mutual inductor.
Background technique
Current transformer is the key equipment of power generation and Domestic electric meter electrical energy measurement, protection.In power production process
In, the links such as power generation, power transformation carry out the measurement and safeguard protection of high-voltage great-current using a large amount of current transformer.For household
Electrical energy measurement has begun in recent years with the implementation of electrical energy measurement intelligence especially remote meter reading and block meter rate system
Penetration of electron formula ammeter, current transformer are even more essential.The working principle of current transformer is similar with common transformer:
Two groups of coils of coiling on the iron core of high magnetic permeability, wherein the number of turns of secondary coil is far longer than primary coil, so according to change
Depressor principle, the high current in primary coil have been converted into the low current in secondary coil, can directly have been measured with ammeter.
In actual use, the primary coil of mutual inductor often uses power grid bus punching mode.
But an important difference of current transformer and common transformer is that it has very high measurement accuracy requirement.By
Always nonideal in actual transformer, there are some losses and leakage fields, have thereby resulted in the measurement error of mutual inductor.Mutual inductance
Error of the device when measuring electric current has than difference and two kinds of angular difference.The so-called electric current for referring to primary winding of mutual inductor and secondary coil than difference
Than the deviation relative to ideal transformer electric current ratio, mainly caused by the leakage magnetic flux of mutual inductor.In order to reduce leakage magnetic flux, should use
The high core material of magnetic conductivity.It is more consistent than difference under different current capacities in order to guarantee, also require iron core magnetic conductivity to have good
The linearity.So-called angular difference refers to the phase difference of secondary coil and primary current, from transformer iron core in magnetic history
The loss of middle generation.Therefore in order to reduce the core material that angular difference should use iron loss low.It can be seen that the magnetism of transformer iron core
It can be one of the principal element for influencing transformer precision.In order to reach higher precision, it is desirable that transformer iron core material has low
Iron loss and the higher magnetic conductivity of the linearity.
There are many selections for the core material of mutual inductor.Silicon steel sheet is widely used soft magnetic materials, and saturation induction is strong
Spend highest, be primarily adapted for use in various low-frequency transformers, since iron loss is big, magnetic conductivity is low, caused in mutual inductor big ratio difference and
Angular difference does not use generally.Ferrite is the soft magnetic materials for being widely used in high frequency, but too due to its saturation induction density
Low, temperature characterisitic is too poor, is not able to satisfy the requirement of mutual inductor use environment.Air core coil manufacture mutual inductor, but this can also be used
Kind mutual inductor external magnetic field is very sensitive, it is necessary to use shielding measure, increase cost.The iron core of permalloy production, which also exists, to be lacked
Point needs to be corrected in route after mutual inductor first is that its magnetic conductivity linearity is poor, second is that it is expensive, third is that saturation
Magnetic induction intensity is low, cannot manufacture anti-DC component current transformer.
Currently, Fe-based amorphous and nanometer crystal alloy has good magnetic property, and cost is lower than permalloy, therefore opens
The application and development in transformer iron core is opened.United States Patent (USP) US20030151483, which is disclosed, to be manufactured with Fe-based amorphous alloy
Current transformer core, although this iron core saturation induction is high, initial permeability is low, iron loss is big.Manufactured mutual inductance
The ratio difference and angular difference of device are not able to satisfy required precision.The cobalt base amorphous alloy magnetic core that Chinese patent 97192424.4 is introduced, can be with
Processing obtains 1000~2000 magnetic conductivity, can be applied to anti-DC component current transformer core, but it is expensive
Hinder large-scale application.
Anti- DC iron core material is Fe-based amorphous alloy, turns to magnetic core by shearing, and qualification then is made by annealing
Iron core.Anti- DC iron core important technological parameters are magnetic conductivity, it is desirable that for permanent magnetic conductance characteristic.Mainly pass through vacuum or antivacuum at present
Heat-treatment furnace carries out band processing, since magnetic core is to stress and its sensitivity, so the magnetic conductivity control of magnetic core is difficult, often
Need repeated multiple times processing qualified, while there are also a large amount of sorting work, not only low efficiency and qualification rate is also low, so system
It causes originally to greatly increase.
Summary of the invention
Present invention solves the technical problem that being to provide a kind of heat treatment method of iron-based amorphous alloy ribbon material, at overheat
The iron-based amorphous alloy ribbon material magnetic conductivity with higher and toughness of reason, can be used for core material.
In view of this, this application provides a kind of heat treatment methods of iron-based amorphous alloy ribbon material, comprising:
Iron-based amorphous alloy ribbon material is irradiated in moving process using laser beam.
Preferably, the thickness of the iron-based amorphous alloy ribbon material is less than 35 μm.
Preferably, the wavelength of the power of the laser beam and laser beam, iron-based amorphous alloy ribbon material, iron-based amorphous alloy ribbon
The ingredient of material, the width of iron-based amorphous alloy ribbon material, iron-based amorphous alloy ribbon material movement speed be proportional to.
Preferably, the laser beam is continuous laser beam or pulse laser beam.
Preferably, in the iron-based amorphous alloy ribbon material each element mass percent are as follows: 91wt%≤Fe≤95wt%,
3wt%≤Si≤6wt%, 2wt%≤B≤5wt%.
Preferably, the width of the iron-based amorphous alloy ribbon material is 140~150mm, with a thickness of 15~30 μm, movement speed
For 150~550mm/min；The laser beam is continuous laser beam, and the power of the laser beam is 5~30W, and optical maser wavelength is
255nm~1064nm.
Preferably, the laser beam is pulse laser beam, and the width of the laser beam is 20~30ns, and pulse frequency is
200~400Hz.
Present invention also provides the iron-based amorphous alloy ribbons that a kind of magnetic core, the heat treatment method as described in above scheme obtain
Material is obtained using shearing, winding.
Present invention also provides a kind of mutual inductors, including magnetic core described in above scheme.
This application provides a kind of heat treatment methods of iron-based amorphous alloy ribbon material, and iron-based amorphous alloy ribbon material is being moved
It is heat-treated by the way of laser beam irradiation during dynamic；The application is by carrying out laser heat to iron-based amorphous alloy ribbon material
Processing, makes iron-based amorphous alloy ribbon material quickly be heated up and be cooled down, it is thus achieved that answering inside iron-based amorphous alloy ribbon material
Power eliminate with the balances of a large amount of free volumes, thus the magnetic conductivity of the iron-based amorphous alloy ribbon material through Overheating Treatment and toughness compared with
Height can be used as core material.
Specific embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described below with reference to embodiment, still
It should be appreciated that these descriptions are only further explanation the features and advantages of the present invention, rather than to the claims in the present invention
Limitation.
For unstable, the lower problem of the magnetic magnetic conductivity formed in the prior art by iron-based amorphous alloy ribbon material, originally
Application provides a kind of heat treatment method of iron-based amorphous alloy ribbon material, so that the iron-based amorphous alloy ribbon material through Overheating Treatment
The relatively high and stable property of magnetic conductivity is higher, specifically, the heat treatment method of the iron-based amorphous alloy ribbon material specifically:
Iron-based amorphous alloy ribbon material is irradiated in moving process using laser beam.
The heat treatment method of iron-based amorphous alloy ribbon material provided by the present application is amorphous alloy strips in moving process, benefit
Strip surface is irradiated with laser beam, while eliminating As-deposited state internal stress by heats band, by controlling parameter and annealing,
So that band is generated anisotropy, reaches target magnetic conductivity.Due to same iron-based amorphous alloy ribbon material ingredient and preparation condition
Consistency, therefore the magnetic conductivity for the band annealed through such mode is highly stable, and can regulate and control, and can obtain in range
Target magnetic conductivity.Band after annealing not only has stable horizontal magnetic conductance characteristic, and band also has good toughness, passes through
Required magnetic core is directly wound into after shearing according to specification, for such magnetic core compared with conventional cores, toughness is splendid, has good
Shock resistance is greatly reduced and is required in processing, transport and use process.
During the heat treatment of iron-based amorphous alloy ribbon material, the application is directed to iron-based amorphous alloy ribbon material, is
A kind of Fe-based amorphous alloy strip, thickness is less than 35 μm, if blocky iron-based amorphous alloy ribbon material, the then heat treatment of the application
Mode can heat unevenly.The application is not particularly limited the source of the iron-based amorphous alloy ribbon material, according to this field
Mode known to technical staff is prepared or commercial product；It is exemplary, the iron-based amorphous alloy ribbon material can be by
What single roller chilling method obtained.
The application is heat-treated iron-based amorphous alloy ribbon material by the way of laser beam irradiation, this kind of heat treatment mode
Heating speed is fastly, it can be achieved that elimination and a large amount of free volume of reservation of iron-based amorphous alloy ribbon material stress.The laser beam shines
Influence of the relevant parameter hit to treated iron-based amorphous alloy ribbon material is very big.For the conjunction that guarantees that it is Fe-based amorphous that treated
The magnetic conductivity of gold ribbon material, laser power ∝ A (wavelength, thickness, ingredient) width movement speed, i.e. laser of laser beam irradiation
The selection of beam power be by laser beam wavelength, the thickness of iron-based amorphous alloy ribbon material, iron-based amorphous alloy ribbon material width, iron-based
What the movement speed of amorphous alloy strips determined together.Specifically, for specific laser, wavelength be it is fixed, at present
The common also just limited several regions of the wavelength selection range of laser, it is infrared (~1064nm), green light (~532nm), ultraviolet
(~355nm), different wave length will affect coefficient A, and simultaneity factor A is also determined by the thickness and ingredient of iron-based amorphous alloy ribbon material,
Generally for iron-based amorphous alloy ribbon material to be processed, thickness and ingredient are all relatively fixed, it is possible to are grouped into
In the function of coefficient A；Power selection is dependent on strip width and movement speed, and strip width is the ginseng often changed
Number, can also be grouped into A；Remaining is exactly mainly speed, and specific magnetic conductivity, usually mobile according to band in order to obtain
Speed chooses suitable laser power.According to the above description, A represent laser beam irradiation laser power and five aspects because
Element (laser beam wavelength, the thickness of iron-based amorphous alloy ribbon material, iron-based amorphous alloy ribbon material width and iron-based amorphous alloy ribbon
The movement speed of material) between ratio, be a parameter.In the application, the A is specially 5000~40000, more specifically,
The A is 6000~37000.
There is provided a kind of heat treatment methods of iron-based amorphous alloy ribbon material for present invention essence, so that treated is iron-based non-
Peritectic alloy band magnetic conductivity with higher and toughness, therefore method provided by the present application is substantially for all iron-based non-
What peritectic alloy band was applicable in.Embodiment in order to become apparent from the application discloses a kind of iron-based non-in a particular embodiment
The ingredient of the heat treatment method of peritectic alloy band, this kind first iron-based amorphous alloy ribbon material is made of Fe, Si and B, each element
Mass percent are as follows: 91%≤Fe≤93%, 5%≤Si≤6%, 2%≤B≤3%；For this kind of iron-based amorphous alloy ribbon
Material, width are 140~150mm, and with a thickness of 15~30 μm, movement speed is 200~500mm/min；The laser beam is to connect
Continuous laser beam, the power of the laser beam are 5~30W, and optical maser wavelength is 255nm~1064nm；The laser beam swashs for pulse
Light light beam, the width of the laser beam are 20~30ns, and pulse frequency is 200~400Hz.In above-mentioned all parameters, if its
A kind of middle parameter changes, and in order to guarantee magnetic conductivity, then the variation of adaptability can also occur for other parameters.In specific embodiment
In, additionally provide a kind of heat treatment method of the iron-based amorphous alloy ribbon material of special component, the iron-based amorphous alloy ribbon material it is each
Element mass percent is 93%≤Fe≤95%, and 3%≤Si≤5%, 3%≤B≤5% is 140 for this kind of strip width
~150mm, with a thickness of 15~30 μm, movement speed is 300~500mm/min；The laser beam is continuous laser beam, described to swash
The power of light beam is 10~25W, and optical maser wavelength is 352nm~1064nm.
Present invention also provides a kind of magnetic core, the iron-based amorphous alloy ribbon material that is obtained by above-mentioned heat treatment method using
Shearing, winding obtain.The shearing, the mode wound are carried out according to mode well known to those skilled in the art, to this
Application is not particularly limited.
Mode of the herein described magnetic core by iron-based amorphous alloy ribbon material Jing Guo laser heat treatment is prepared, and has higher
Magnetic conductivity and toughness.It include above-mentioned magnetic core in the mutual inductor as a result, present invention also provides a kind of mutual inductor.It is described mutual
Sensor be it is well known to those skilled in the art, component the application wherein included is without particularly limiting.
For a further understanding of the present invention, below with reference to embodiment to the heat of iron-based amorphous alloy ribbon material provided by the invention
Processing method is described in detail, and protection scope of the present invention is not limited by the following examples.
Embodiment 1
The alloying component of iron-based amorphous alloy ribbon material is made of Fe, Si, B and inevitable impurity element, each element
Mass percent are as follows: 91%≤Fe≤93%, 5%≤Si≤6%, 2%≤B≤3%；It is carried out using following steps above-mentioned iron-based
The heat treatment of amorphous alloy strips: by width 142mm, 20 μm of thickness of iron-based amorphous alloy ribbon material with the movement of 300mm/min
Speed is irradiated using continuous laser beam, laser power 20W, optical maser wavelength 1064nm.Band after annealing tests phase at 1 khz
It is 500~600 to magnetic conductivity.
Embodiment 2
The alloying component of iron-based amorphous alloy ribbon material is made of Fe, Si, B and inevitable impurity element, each element
Mass percent are as follows: 91%≤Fe≤93%, 5%≤Si≤6%, 2%≤B≤3%；It is carried out using following steps above-mentioned iron-based
The heat treatment of amorphous alloy strips: by width 142mm, 20 μm of thickness of iron-based amorphous alloy ribbon material with the movement of 500mm/min
Speed is irradiated using continuous laser beam, laser power 20W, optical maser wavelength 1064nm.Band after annealing tests phase at 1 khz
It is 900~1000 to magnetic conductivity.
Embodiment 3
The alloying component of iron-based amorphous alloy ribbon material is made of Fe, Si, B and inevitable impurity element, each element
Mass percent are as follows: 91%≤Fe≤93%, 5%≤Si≤6%, 2%≤B≤3%；It is carried out using following steps above-mentioned iron-based
The heat treatment of amorphous alloy strips: by width 142mm, 20 μm of thickness of iron-based amorphous alloy ribbon material with the movement of 500mm/min
Speed is irradiated using continuous laser beam, laser power 17W, optical maser wavelength 1064nm.Band after annealing tests phase at 1 khz
It is 1500~1600 to magnetic conductivity.
Embodiment 4
The alloying component of iron-based amorphous alloy ribbon material is made of Fe, Si, B and inevitable impurity element, each element
Mass percent are as follows: 91%≤Fe≤93%, 5%≤Si≤6%, 2%≤B≤3%；It is carried out using following steps above-mentioned iron-based
The heat treatment of amorphous alloy strips: by width 142mm, 20 μm of thickness of iron-based amorphous alloy ribbon material with the mobile speed of 200mm/min
Degree, is irradiated, laser power 9W, optical maser wavelength 532nm using continuous laser beam.Band after annealing tests opposite magnetic at 1 khz
Conductance is 1300~1400.
Embodiment 5
The alloying component of iron-based amorphous alloy ribbon material is made of Fe, Si, B and inevitable impurity element, each element
Mass percent are as follows: 91%≤Fe≤93%, 5%≤Si≤6%, 2%≤B≤3%；It is carried out using following steps above-mentioned iron-based
The heat treatment of amorphous alloy strips: by width 142mm, 20 μm of thickness of iron-based amorphous alloy ribbon material with the mobile speed of 300mm/min
Degree, is irradiated, laser power 5W, optical maser wavelength 355nm using continuous laser beam.Band after annealing tests opposite magnetic at 1 khz
Conductance is 1200~1300.
Embodiment 6
The alloying component of iron-based amorphous alloy ribbon material is made of Fe, Si, B and inevitable impurity element, each element
Mass percent are as follows: 91%≤Fe≤93%, 5%≤Si≤6%, 2%≤B≤3%；It is carried out using following steps above-mentioned iron-based
The heat treatment of amorphous alloy strips: by width 142mm, 30 μm of thickness of iron-based amorphous alloy ribbon material with the mobile speed of 350mm/min
Degree, is irradiated, pulse width 25ns, pulse frequency 300Hz, laser power 30W, optical maser wavelength using pulse laser beam
1064nm.It is 1500~1600 that band after annealing tests relative permeability at 1 khz.
Embodiment 7
The alloying component of iron-based amorphous alloy ribbon material is made of Fe, Si, B and inevitable impurity element, each element
Mass percent are as follows: 93%≤Fe≤95%, 3%≤Si≤5%, 3%≤B≤5%；It is carried out using following steps above-mentioned iron-based
Amorphous alloy strips heat treatment: by width 142mm, 25 μm of thickness of iron-based amorphous alloy ribbon material with 350mm/min movement speed,
It is irradiated using continuous laser beam, laser power 18W, optical maser wavelength 1064nm.It is opposite that band after annealing tests it at 1 khz
Magnetic conductivity is 500~600.
The 1/D reciprocal of maximum diameter of the rod when being broken with amorphous ribbon indicates the bending ductility of belt, and D is smaller, is bent modeling
Property is better.
Comparative example 1
To there is the iron-based amorphous alloy ribbon material of same ingredient to carry out conventional annealing heat treatment with embodiment 1, it should through detection
The D of iron-based amorphous alloy ribbon material after kind heat treatment is greater than 20mm.
The D of band after Examples 1 to 7 laser annealing is respectively less than 10mm.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of heat treatment method of iron-based amorphous alloy ribbon material, comprising:
Iron-based amorphous alloy ribbon material is irradiated in moving process using laser beam.
2. heat treatment method according to claim 1, which is characterized in that the thickness of the iron-based amorphous alloy ribbon material is less than
35μm。
3. heat treatment method according to claim 1, which is characterized in that the power of the laser beam and the wave of laser beam
Length, the width of iron-based amorphous alloy ribbon material, the ingredient of iron-based amorphous alloy ribbon material, iron-based amorphous alloy ribbon material, Fe-based amorphous conjunction
The movement speed of gold ribbon material is proportional to.
4. heat treatment method according to claim 1, which is characterized in that the laser beam is that continuous laser beam or pulse swash
Light beam.
5. described in any item heat treatment methods according to claim 1~3, which is characterized in that the iron-based amorphous alloy ribbon material
The mass percent of middle each element are as follows: 91wt%≤Fe≤95wt%, 3wt%≤Si≤6wt%, 2wt%≤B≤5wt%.
6. heat treatment method according to claim 5, which is characterized in that the width of the iron-based amorphous alloy ribbon material is
140~150mm, with a thickness of 15~30 μm, movement speed is 150~550mm/min；The laser beam is continuous laser beam, institute
The power for stating laser beam is 5~30W, and optical maser wavelength is 255nm~1064nm.
7. heat treatment method according to claim 5, which is characterized in that the laser beam is pulse laser beam, described to swash
The width of light beam is 20~30ns, and pulse frequency is 200~400Hz.
8. a kind of magnetic core is passed through again by the iron-based amorphous alloy ribbon material that the described in any item heat treatment methods of claim 1~7 obtain
Cross shearing, winding obtains.
9. a kind of mutual inductor, including magnetic core according to any one of claims 8.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020010795A1 (en) * | 2018-07-10 | 2020-01-16 | 青岛云路先进材料技术股份有限公司 | Laser heat treatment method for amorphous alloy strip |
| CN111455159A (en) * | 2020-04-20 | 2020-07-28 | 青岛云路先进材料技术股份有限公司 | Single-sheet continuous heat treatment process for iron-based amorphous alloy strip |
| CN112469257A (en) * | 2020-10-14 | 2021-03-09 | 北京航空航天大学 | Iron-based amorphous material electromagnetic shielding barrel with low noise and high shielding coefficient |
| CN113892154A (en) * | 2019-06-28 | 2022-01-04 | 日立金属株式会社 | Fe-based amorphous alloy thin strip and manufacturing method thereof, iron core and transformer |
| CN116144885A (en) * | 2023-02-21 | 2023-05-23 | 深圳大学 | Laser heat treatment method and application of iron-based amorphous alloy strip with crystallized surface |
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