CN117393296A - Method and apparatus for manufacturing magnetic sheet - Google Patents
Method and apparatus for manufacturing magnetic sheet Download PDFInfo
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- CN117393296A CN117393296A CN202310818362.0A CN202310818362A CN117393296A CN 117393296 A CN117393296 A CN 117393296A CN 202310818362 A CN202310818362 A CN 202310818362A CN 117393296 A CN117393296 A CN 117393296A
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- alloy ribbon
- nanocrystalline alloy
- tension
- magnetic sheet
- ribbon
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 55
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 219
- 239000000956 alloy Substances 0.000 claims abstract description 219
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims abstract description 156
- 238000010438 heat treatment Methods 0.000 claims abstract description 129
- 239000000853 adhesive Substances 0.000 claims abstract description 110
- 230000001070 adhesive effect Effects 0.000 claims abstract description 110
- 230000008569 process Effects 0.000 claims description 37
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 27
- 239000010410 layer Substances 0.000 claims description 9
- 238000010030 laminating Methods 0.000 abstract description 12
- 238000003475 lamination Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 description 53
- 238000004804 winding Methods 0.000 description 29
- 239000012790 adhesive layer Substances 0.000 description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000003825 pressing Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 239000002390 adhesive tape Substances 0.000 description 8
- 238000005336 cracking Methods 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 125000003275 alpha amino acid group Chemical group 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- 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
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- 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
-
- 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
-
- 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
- H01F41/0253—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 for manufacturing permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The present invention provides a method for manufacturing a magnetic sheet capable of suppressing breakage of a nanocrystalline alloy ribbon when manufacturing a magnetic sheet in which a nanocrystalline alloy ribbon having a crack and an adhesive sheet are laminated. The method for manufacturing a magnetic sheet includes an amorphous alloy ribbon carrying step of continuously carrying an amorphous alloy ribbon, a heat treatment step of heat-treating the amorphous alloy ribbon by contact with a heating body to obtain a nanocrystalline alloy ribbon, a nanocrystalline alloy ribbon carrying step of continuously carrying the nanocrystalline alloy ribbon, a lamination step of laminating the nanocrystalline alloy ribbon and an adhesive sheet to obtain a laminate, and a crack forming step of forming a crack in the nanocrystalline alloy ribbon of the laminate by contact with a crack roller to obtain a magnetic sheet, and the amorphous alloy ribbon carrying step, the heat treatment step, the nanocrystalline alloy ribbon carrying step, the lamination step, and the crack forming step are sequentially and continuously carried out.
Description
Technical Field
The present disclosure relates to a method and an apparatus for manufacturing a magnetic sheet.
Background
In recent years, a technique involving a thin ribbon of a nanocrystalline alloy with a resin film that can be used as a magnetic sheet has been studied.
For example, paragraphs 0028 to 0038 of patent document 1 and fig. 1 disclose an in-line annealing apparatus for unwinding an amorphous alloy ribbon from a roll of the amorphous alloy ribbon by an unwinding roller, performing a heat treatment including heating and cooling on the unwound amorphous alloy ribbon to obtain a nanocrystalline alloy ribbon, and winding the obtained nanocrystalline alloy ribbon by a winding roller to obtain a roller of the nanocrystalline alloy ribbon.
In paragraph 0039 of patent document 1 and fig. 2, an example of a lamination step is disclosed in which a nanocrystalline alloy ribbon, an adhesive layer, and a resin film are respectively unwound from a roll of the nanocrystalline alloy ribbon, a roll of the adhesive layer, and a roll of the resin film, and the unwound nanocrystalline alloy ribbon, adhesive layer, and resin film are laminated by a pair of pressing rollers to be integrated, thereby obtaining a nanocrystalline alloy ribbon with a resin film.
The following examples are disclosed in paragraphs 0043 to 0051 of patent document 1: and forming cracks on the nanocrystalline alloy ribbon in the nanocrystalline alloy ribbon attached with the resin film by using a crack roller or the like. Further, the following is disclosed: the effect of reducing the eddy current can be obtained by forming cracks in the nanocrystalline alloy ribbon among the nanocrystalline alloy ribbons with the resin film and dividing the nanocrystalline alloy ribbon into a plurality of nanocrystalline alloy ribbons (see paragraph 0044 of patent document 1).
Prior art literature
Patent literature
Patent document 1: international publication No. 2020/235643
Disclosure of Invention
Problems to be solved by the invention
However, a magnetic sheet obtained by laminating a thin nanocrystalline alloy ribbon having a crack and an adhesive sheet is sometimes used.
In order to manufacture the magnetic sheet by using the conventional technique (for example, the technique described in patent document 1, the same applies to the following), it is necessary to temporarily wind the nanocrystalline alloy ribbon manufactured by the heat treatment of the amorphous alloy ribbon to form a coil, unwind the nanocrystalline alloy ribbon from the coil, and apply the unwound nanocrystalline alloy ribbon to the adhesive sheet and form a crack.
However, in the case of manufacturing the magnetic sheet by using the conventional technique, when winding and/or unwinding the thin nanocrystalline alloy ribbon is performed before the thin nanocrystalline alloy ribbon is bonded to the adhesive sheet, breakage of the thin nanocrystalline alloy ribbon may occur due to embrittlement characteristics specific to the thin nanocrystalline alloy ribbon.
The present disclosure addresses the problem of providing a method for producing a magnetic sheet and an apparatus for producing a magnetic sheet, wherein breakage of a thin nanocrystalline alloy ribbon can be suppressed when producing a magnetic sheet obtained by laminating a thin nanocrystalline alloy ribbon having a crack and an adhesive sheet.
Means for solving the problems
Specific embodiments for solving the above problems include the following.
< 1 > a method for producing a magnetic sheet, comprising:
an amorphous alloy ribbon carrying step of continuously carrying the amorphous alloy ribbon in a state where tension is applied;
a heat treatment step of heat-treating the amorphous alloy ribbon by contacting the amorphous alloy ribbon with a heating body in a state where tension is applied to the ribbon, thereby obtaining a nanocrystalline alloy ribbon;
a nanocrystalline alloy ribbon carrying step of continuously carrying the nanocrystalline alloy ribbon in a state where tension is applied;
a bonding step of bonding the nanocrystalline alloy ribbon and the adhesive sheet in a state where tension is applied to the ribbon, thereby obtaining a laminate; and
a crack forming step of forming a crack in the thin nanocrystalline alloy strip of the laminate by contact with a crack roller to obtain a magnetic sheet,
the amorphous alloy ribbon carrying step, the heat treatment step, the nanocrystalline alloy ribbon carrying step, the bonding step, and the crack forming step are sequentially and continuously performed.
In the method for producing a magnetic sheet according to < 2 > and < 1 >, when the width of the adhesive sheet is defined as width A and the width of the thin nanocrystalline alloy ribbon is defined as width B, the value obtained by subtracting width B from width A is 0.2mm to 3.0mm.
The method for producing a magnetic sheet according to < 3 > to < 1 > or < 2 >, wherein the bonding step comprises: before the nanocrystalline alloy ribbon is bonded to the adhesive sheet, positions of both end surfaces in the width direction of the nanocrystalline alloy ribbon are adjusted.
The method for manufacturing a magnetic sheet according to any one of < 1 > - < 3 >, the nanocrystalline alloy ribbon transport step comprising: and adjusting the tension of the nanocrystalline alloy ribbon by using a tension adjusting device.
A method for producing a magnetic sheet according to any one of < 1 > < 4 >, wherein the adhesive sheet is a double-sided adhesive tape comprising an adhesive layer or a support and adhesive layers provided on both sides of the support.
< 6 > a magnetic sheet manufacturing apparatus comprising:
an amorphous alloy ribbon carrying device for continuously carrying an amorphous alloy ribbon in a state where tension is applied;
a heat treatment device including a heating body in contact with the amorphous alloy ribbon in a state where tension is applied, and performing heat treatment on the amorphous alloy ribbon to obtain a nanocrystalline alloy ribbon;
A nanocrystalline alloy ribbon carrying device that continuously carries the nanocrystalline alloy ribbon in a state where tension is applied;
a bonding device for bonding the nanocrystalline alloy ribbon and the adhesive sheet in a state where tension is applied, thereby obtaining a laminate; and
and a crack forming device including a crack roller in contact with the nanocrystalline alloy ribbon of the laminate, wherein the nanocrystalline alloy ribbon of the laminate is cracked to obtain a magnetic sheet.
The magnetic sheet manufacturing apparatus according to < 7 > to < 6 > further comprising a ribbon end face position adjusting device for adjusting positions of both end faces of the nanocrystalline alloy ribbon in a width direction between the heat treatment device and the bonding device.
The magnetic sheet manufacturing apparatus according to < 8 > to < 6 > or < 7 > further comprises a tension adjusting device for adjusting the tension of the nanocrystalline alloy ribbon between the heat treatment device and the bonding device.
The effects of the invention are as follows.
According to the present disclosure, a method and an apparatus for manufacturing a magnetic sheet are provided that are capable of suppressing breakage of a nanocrystalline alloy ribbon when manufacturing a magnetic sheet obtained by laminating a nanocrystalline alloy ribbon having a crack and an adhesive sheet.
Drawings
Fig. 1 is a schematic cross-sectional view showing an example of a magnetic sheet manufacturing apparatus for carrying out the method for manufacturing a magnetic sheet of the present disclosure.
Fig. 2 is a schematic cross-sectional view showing an example of the heat treatment apparatus shown in fig. 1 in detail.
Fig. 3 is a diagram showing the second half including the bonding roller and the cracking roller in detail in the example shown in fig. 1.
Fig. 4 is a schematic cross-sectional view showing an example of the double-sided release liner-attached adhesive sheet in the present disclosure.
Fig. 5 is a schematic cross-sectional view showing an example of the pressure-sensitive adhesive sheet with a single-sided release liner in the present disclosure.
Fig. 6 is a schematic cross-sectional view showing an example of a thin ribbon of a nanocrystalline alloy in the present disclosure.
Fig. 7 is a schematic cross-sectional view showing an example of a laminate obtained in the lamination step in the present disclosure.
Fig. 8 is a schematic cross-sectional view showing an example of a magnetic sheet in the present disclosure.
Fig. 9 is a schematic cross-sectional view showing another example of the pressure-sensitive adhesive sheet with a single-sided release liner in the present disclosure.
Fig. 10 is a schematic cross-sectional view showing another example of the double-sided release liner-attached adhesive sheet in the present disclosure.
Fig. 11 is a schematic cross-sectional view showing another example of the magnetic sheet in the present disclosure.
Fig. 12 is a schematic cross-sectional view showing a modification of the heat treatment apparatus in the present disclosure.
Symbol description
10-coiled material formed by coiling amorphous alloy thin strip, 10A-amorphous alloy thin strip, 10B-nanocrystalline alloy thin strip, 10 BA-nanocrystalline alloy thin strip with cracks, 10 BB-cracks, 11-unreeling device, 12-15-carrying roller, 20-tightness adjusting roller, 21-tensioning roller unit, 21A-21C-tensioning roller, 22-thin strip end face detecting device, 23-thin strip end face detecting device, 24-tension detecting device, 25-thin strip end face position adjusting device, 30X-heat treatment device, 31, 34, 35, 38-pair of guide rollers, 32X-heating body, 33-heating device, 36X-cooling body, 37-cooling device, 40-tensioning roller unit, 40A-40C-tensioning roller, 41-46-carrying roller, 50-thin strip end face position adjusting device, 51-tightness adjusting roller, 52-thin strip end face detecting device, 54-sheet end face position adjusting device, 55-sheet end face detecting device, 60-double-sided release liner-attached adhesive sheet, 60A-single-sided release liner-attached adhesive sheet, 60 Aa-adhesive layer (adhesive sheet), 60 Ab-release liner, 60B-release liner, 61-unreeling device, 62-reeling device, 63-65-carrying roller, 70A-laminate, 70B, 170B-magnetic sheet, 71-laminating roller (attaching device), 72-cracking roller, 73-pressing roller, 74-holding roller, 75-flattening roller, 76-78-carrying roller, 81-reeling device, 100-magnetic sheet manufacturing device, 160-double-sided release liner-attached adhesive sheet, 160A-single-sided release liner-attached adhesive sheet, 160Aa 1-support, 160Aa 2-adhesive layer, 160 Aa-double-sided adhesive tape (adhesive sheet), 160 Ab-release liner, 170B-magnetic sheet.
Detailed Description
In the present disclosure, a numerical range indicated by "to" is a range including numerical values described before and after "to" as a lower limit value and an upper limit value.
In the present disclosure, the term "process" refers not only to an independent process but also to a process that cannot be clearly distinguished from other processes, as long as the desired purpose of the process can be achieved.
In the present disclosure, the terms "first," "second," and "third," etc. are merely terms used for identification, and are not terms showing an order, a priority order, etc.
In the present disclosure, the Fe-based amorphous alloy ribbon refers to a ribbon composed of an Fe-based amorphous alloy.
In the present disclosure, the Fe-based amorphous alloy refers to an amorphous alloy containing Fe (iron) as a main component. The main component herein means a component having the highest content (mass%).
In this disclosure, "nanocrystalline alloy" refers to an alloy having an alloy structure that includes nanocrystalline grains. The concept of "nanocrystalline alloy" also includes alloys having an alloy structure containing nanocrystalline grains and an amorphous phase. The nanocrystalline grains here are grains having a grain size of 1nm to 100nm, preferably 10nm to 50 nm.
[ method for producing magnetic sheet ]
The method for producing a magnetic sheet of the present disclosure (hereinafter also referred to as "the method for producing the present disclosure") includes:
an amorphous alloy ribbon carrying step of continuously carrying the amorphous alloy ribbon in a state where tension is applied;
a heat treatment step of bringing the amorphous alloy ribbon into contact with a heating body in a state where tension is applied, thereby heat-treating the amorphous alloy ribbon to obtain a nanocrystalline alloy ribbon;
a nanocrystalline alloy ribbon conveyance step in which the nanocrystalline alloy ribbon is continuously conveyed in a state where tension is applied;
a bonding step of bonding the nanocrystalline alloy ribbon and the adhesive sheet in a state where tension is applied to the ribbon, thereby obtaining a laminate; and
a crack forming step of forming cracks in the thin nanocrystalline alloy strip of the laminate by contact with a crack roller to obtain a magnetic sheet,
the amorphous alloy ribbon carrying process, the heat treatment process, the nanocrystalline alloy ribbon carrying process, the bonding process, and the crack forming process are sequentially and continuously performed.
The manufacturing method of the present disclosure may include other steps as needed.
In the manufacturing method of the present disclosure, as described above, the amorphous alloy ribbon carrying process, the heat treatment process, the nanocrystalline alloy ribbon carrying process, the bonding process, and the crack forming process are sequentially and continuously performed.
In the manufacturing method of the present invention, the above operations are performed continuously without intervention of the winding operation and the unwinding operation.
Therefore, according to the manufacturing method of the present disclosure, the number of winding operations and unwinding operations in the process from the amorphous alloy ribbon to the magnetic sheet can be reduced.
Therefore, according to the manufacturing method of the present disclosure, breakage of the thin strip of the nanocrystalline alloy due to the embrittlement characteristic peculiar to the thin strip of the nanocrystalline alloy can be suppressed at the time of manufacturing the magnetic sheet.
In the manufacturing method of the present disclosure, for example, in the case of manufacturing the magnetic sheet by the manufacturing method described in the above-mentioned patent document 1 (international publication No. 2020/235643), a winding operation of temporarily winding the nanocrystalline alloy ribbon manufactured by heat-treating the amorphous alloy ribbon is required, and the nanocrystalline alloy ribbon after winding needs to be unreeled again to bond with the adhesive sheet and form a crack. Therefore, when the nanocrystalline alloy ribbon is wound and/or unwound, breakage of the nanocrystalline alloy ribbon may occur due to the embrittlement characteristic specific to the nanocrystalline alloy ribbon.
In contrast, in the manufacturing method of the present disclosure, the winding operation and the unwinding operation of the nanocrystalline alloy ribbon can be omitted, and therefore breakage of the nanocrystalline alloy ribbon can be suppressed.
Hereinafter, an example of the manufacturing method of the present disclosure will be described with reference to the drawings, but the manufacturing method of the present disclosure is not limited to the following example.
In the following, components having substantially the same function are denoted by the same reference numerals throughout the drawings, and the description thereof may be omitted.
The dimensional ratio in the drawings may be exaggerated for convenience of explanation, and may be different from the actual ratio.
Fig. 1 is a schematic cross-sectional view showing a magnetic sheet manufacturing apparatus 100 as an example of a magnetic sheet manufacturing apparatus for carrying out the magnetic sheet manufacturing method of the present disclosure.
Fig. 2 is a diagram showing the heat treatment apparatus in the example shown in fig. 1 in detail.
Fig. 3 is a diagram showing the second half including the bonding roller and the cracking roller in detail in the example shown in fig. 1.
The magnetic sheet manufacturing apparatus 100 is also an example of the magnetic sheet manufacturing apparatus of the present disclosure described below.
As shown in fig. 1 to 3, in the manufacture of a magnetic sheet using a magnetic sheet manufacturing apparatus 100,
the amorphous alloy ribbon 10A is unwound from a coil 10 of wound strip amorphous alloy ribbon 10A,
continuously carrying the unreeled amorphous alloy ribbon 10A,
the continuously conveyed amorphous alloy ribbon 10A is subjected to heat treatment (i.e., heating and cooling) by a heat treatment apparatus 30, whereby a nanocrystalline alloy ribbon 10B is manufactured,
The produced nanocrystalline alloy ribbon 10B is continuously conveyed without winding,
the continuously conveyed nanocrystalline alloy ribbon 10B is bonded to an adhesive sheet 60A with a single-sided release liner to produce a laminate 70A,
the nanocrystalline alloy ribbon 10B in the manufactured laminate 70A is pressed by the crack roller 72 to form cracks, thereby manufacturing the magnetic sheet 70B,
the obtained magnetic sheet 70B is wound by the winding device 81.
As shown in fig. 5, the adhesive sheet 60A with a single-sided release liner includes a release liner 60Ab and an adhesive layer 60Aa as an adhesive sheet.
As shown in fig. 7, the laminate 70A is a laminate obtained by bonding the nanocrystalline alloy ribbon 10B to the adhesive sheet 60A with a single-sided release liner in a configuration in which the nanocrystalline alloy ribbon 10B is in contact with the adhesive layer 60Aa as the adhesive sheet.
As shown in fig. 8, the magnetic sheet 70B is a magnetic sheet including the nanocrystalline alloy ribbon 10BA having the crack 10BB and the adhesive sheet 60A with a single-sided release liner including the release liner 60Ab and the adhesive layer 60Aa, in a configuration in which the nanocrystalline alloy ribbon 10BA having the crack is in contact with the adhesive layer 60Aa.
As shown in fig. 7 and 8, the magnetic sheet 70B has cracks formed in the thin nanocrystalline alloy ribbon 10B in the laminate 70A. That is, the thin nanocrystalline alloy ribbon 10BA having the crack 10BB in the magnetic sheet 70B has a crack formed in the thin nanocrystalline alloy ribbon 10B.
As described above, the magnetic sheet manufacturing apparatus 100 is an online manufacturing apparatus that continuously conveys the amorphous alloy thin ribbon 10A as a starting material, the nanocrystalline alloy thin ribbon 10B as an intermediate material, and the magnetic sheet 70B as a target object in an online continuous conveyance system.
The structure of the magnetic sheet manufacturing apparatus 100 will be described in more detail below.
In the following description, the upstream side and the downstream side refer to the upstream side and the downstream side in the conveyance direction of the thin ribbon (i.e., amorphous alloy thin ribbon or nanocrystalline alloy thin ribbon) or the laminate, respectively.
As shown in fig. 1, the magnetic sheet manufacturing apparatus 100 includes an unreeling apparatus 11 (for example, an unreeling roller) that unreels an amorphous alloy thin strip 10A from a roll 10 in which an elongated amorphous alloy thin strip 10A is wound.
As the amorphous alloy ribbon 10A, for example, an Fe-based amorphous alloy ribbon produced by a single roll method can be used.
For example, reference is made to known documents such as international publication No. 2013/137118 as appropriate for the production of Fe-based amorphous alloy ribbons by the single roll method.
In the single roll method, a thin Fe-based amorphous alloy ribbon is generally manufactured by winding a coil having an elongated thin Fe-based amorphous alloy ribbon. The produced coil material can be used as the coil material 10 as the starting material in this example.
As shown in fig. 1, the magnetic sheet manufacturing apparatus 100 includes an amorphous alloy ribbon carrying device that continuously carries an unreeled amorphous alloy ribbon 10A in a state where tension is applied.
The amorphous alloy thin strip conveying device in the magnetic sheet manufacturing apparatus 100 includes conveying rollers 12 to 15.
In the magnetic sheet manufacturing apparatus 100, devices or members existing on the transport path of the amorphous alloy thin strip 10A, such as the tension adjusting device (dancer roller 20 and tension roller unit 21) and the thin strip end surface position adjusting device 25, may also function as an amorphous alloy thin strip transport device.
In the magnetic sheet manufacturing apparatus 100, a dancer roll 20 and a tension roll unit 21 are provided as tension adjusting devices in the middle of the conveyance path of the amorphous alloy thin strip 10A. The tension roller unit 21 includes tension rollers 21A, 21B, and 21C.
In the magnetic sheet manufacturing apparatus 100, the tension of the amorphous alloy thin strip 10A in the heat treatment apparatus 30 is easily adjusted to a tension suitable for the heat treatment conditions for heat-treating the amorphous alloy thin strip 10A to obtain the nanocrystalline alloy thin strip 10B by the tension adjustment apparatus.
The magnetic sheet manufacturing apparatus 100 is further provided with a tension detecting device 24 for detecting the tension of the amorphous alloy thin strip 10A.
Among them, the tension adjusting device and the tension detecting device for the amorphous alloy ribbon are not essential elements in the magnetic sheet manufacturing apparatus of the present disclosure. For example, even when the tension adjusting device and the tension detecting device are omitted, the amorphous alloy ribbon 10A can be continuously conveyed in a state where tension is applied, and the heat treatment can be performed to obtain the nanocrystalline alloy ribbon 10B.
The magnetic sheet manufacturing apparatus 100 is provided with a ribbon end face position adjusting device 25 and ribbon end face detecting devices 22 and 23 in the middle of the carrying path of the amorphous alloy ribbon 10A. In the magnetic sheet manufacturing apparatus 100, the positions of both end surfaces in the width direction of the continuously traveling amorphous alloy thin strip 10A can be adjusted by the thin strip end surface position adjustment device and the thin strip end surface detection device.
The above-described thin-strip end face position adjustment device 25 and thin-strip end face detection devices 22 and 23 are not essential elements in the magnetic sheet manufacturing apparatus of the present disclosure.
As shown in fig. 1, the magnetic sheet manufacturing apparatus 100 includes a heat treatment apparatus 30 for manufacturing a nanocrystalline alloy ribbon 10B by heat-treating a continuously conveyed amorphous alloy ribbon 10A.
In the magnetic sheet manufacturing apparatus 100, the amorphous alloy thin ribbon 10A that has entered the heat treatment apparatus 30 is heat-treated in the heat treatment apparatus 30 to manufacture the nanocrystalline alloy thin ribbon 10B, and the nanocrystalline alloy thin ribbon 10B is discharged from the heat treatment apparatus 30.
Fig. 2 is a partially enlarged view schematically showing a detailed structure of the heat treatment apparatus 30.
The heat treatment apparatus 30 includes, in order from the upstream side in the conveying direction of the thin tape, a pair of guide rollers 31, a heating device 33 including a heating body 32 therein, a pair of guide rollers 34, a pair of guide rollers 35, a cooling device 37 including a cooling body 36 therein, and a pair of guide rollers 38.
The pair of guide rollers has a function of conveying the thin belt by sandwiching the thin belt between the pair of guide rollers.
The heating body 32 and the cooling body 36 are both metal plate-shaped members.
The amorphous alloy ribbon 10A is heated by bringing the upper surface of the heating body 32 into contact with the amorphous alloy ribbon 10A.
The amorphous alloy ribbon 10A is cooled by bringing the upper surface of the cooling body 36 into contact with the amorphous alloy ribbon 10A.
The amorphous alloy ribbon 10A entering the heating device 33 in the heat treatment device 30 travels (i.e., is continuously conveyed) while being in contact with the upper surface of the heating body 32 disposed in the heating device 33. By contact with the upper surface of the heating body 32, the amorphous alloy ribbon 10A is heated.
The heated amorphous alloy strip 10A is conveyed by the pair of guide rollers 34 and the pair of guide rollers 35, enters the cooling device 37, and travels while being in contact with a part of the cooling body 36 disposed in the cooling device 37 (i.e., is continuously conveyed). The heated amorphous alloy ribbon 10A is cooled to, for example, about room temperature by contact with the upper surface of the cooling body 36.
The amorphous alloy ribbon 10A entering the heat treatment apparatus 30 is heat-treated by the heating and the cooling. During the heating process in this heat treatment, or during the heating and cooling processes, nanocrystalline grains are generated in the structure of the amorphous alloy ribbon 10A, and the nanocrystalline alloy ribbon 10B is manufactured (i.e., the amorphous alloy ribbon 10A is converted into the nanocrystalline alloy ribbon 10B).
The temperature of the heating body 32 may be any temperature as long as the amorphous alloy ribbon 10A is heated to obtain the nanocrystalline alloy ribbon 10B, and may be appropriately set in consideration of the composition of the amorphous alloy ribbon, and the like.
A preferred mode of the heating body 32, a modification, and a preferred temperature of the heating body will be described below.
The cooling body 36 may or may not have a cooling mechanism (e.g., a water cooling mechanism), and may not have a special cooling mechanism (e.g., a naturally radiating cooling body).
A preferred embodiment and a modification of the cooling body 36 will be described below.
The cooling of the amorphous alloy ribbon 10A may be performed by air cooling instead of the cooling body 36. That is, the cooling body 36 is not an essential element in the magnetic sheet manufacturing apparatus of the present disclosure.
As shown in fig. 1, the magnetic sheet manufacturing apparatus 100 includes a nanocrystalline alloy ribbon carrying device that continuously carries the nanocrystalline alloy ribbon 10B obtained by the heat treatment apparatus 30 in a state where tension is applied without winding.
Specifically, the nanocrystalline alloy ribbon conveying device in the magnetic sheet manufacturing apparatus 100 includes conveying rollers 41 to 46.
In the magnetic sheet manufacturing apparatus 100, for example, the tension adjusting device (the tension roller unit 40 and the tension roller 51), the ribbon end face position adjusting devices 50 and 54, and other devices or components existing on the transport path of the nanocrystalline alloy ribbon 10B may also function as the nanocrystalline alloy ribbon transport device.
The magnetic sheet manufacturing apparatus 100 is provided with a tension roller unit 40 and a dancer roller 51 as tension adjusting means in the middle of the conveyance path of the nanocrystalline alloy ribbon 10B, and is also provided with a ribbon end face position detecting means 52. The tension roller unit 40 includes tension rollers 40A, 40B, and 40C.
In the magnetic sheet manufacturing apparatus 100, the tension of the thin nanocrystalline alloy ribbon 10B just coming out of the heat treatment apparatus 30 (i.e., the tension suitable for the conditions of the heat treatment process) is easily adjusted to the tension suitable for the subsequent bonding process by the tension adjustment apparatus.
Among them, the tension adjusting device and the tension detecting device for the nanocrystalline alloy ribbon are not essential elements in the magnetic sheet manufacturing apparatus of the present disclosure.
For example, even when the tension adjustment detecting device for the nanocrystalline alloy ribbon is omitted, the nanocrystalline alloy ribbon can be continuously conveyed in a state where tension is applied, and the operation of the subsequent bonding process can be performed.
The magnetic sheet manufacturing apparatus 100 includes a thin-strip end-face position adjusting device 54 and a thin-strip end-face detecting device 55 for adjusting the positions of both end faces of the thin strip 10B in the width direction between a carrying roller 46 as a thin strip carrying device for the nanocrystalline alloy, and a bonding roller 71 (bonding device) for bonding the thin strip 10B and the adhesive sheet 60A with a single-sided release liner.
The magnetic sheet manufacturing apparatus 100 can more effectively suppress the deviation of the bonding position between the nanocrystalline alloy ribbon 10B and the adhesive sheet 60A with a single-sided release liner (specifically, the positional deviation in the width direction of the nanocrystalline alloy ribbon 10B) by including the ribbon end face position adjusting apparatus 54.
The above-described thin-strip end face position adjustment device 54 and thin-strip end face detection device 55 are not essential elements in the magnetic sheet manufacturing apparatus of the present disclosure.
The magnetic sheet manufacturing apparatus 100 includes a laminating roller 71 as a laminating apparatus, and the laminating roller 71 is configured to laminate the nanocrystalline alloy ribbon 10B continuously conveyed in a state where tension is applied to the nanocrystalline alloy ribbon and the adhesive sheet 60A with a single-sided release liner, thereby obtaining a laminate 70A.
The bonding roller 71 as a bonding device is composed of a pair of rollers.
In the bonding by the bonding roller 71, the nanocrystalline alloy ribbon 10B (see fig. 6) and the adhesive sheet 60A (see fig. 5) with a single-sided release liner carried by other routes are sandwiched between a pair of rollers serving as the bonding roller 71, and the nanocrystalline alloy ribbon 10B is bonded in a contact arrangement with the adhesive layer 60 Aa. By this bonding, a laminate 70A (see fig. 3 and 7 above) is obtained.
Here, the adhesive sheet 60A with a single-sided release liner is conveyed to the laminating roller 71 by a different route from the nanocrystalline alloy ribbon 10B.
The following describes a supply route to the laminating roller 71 of the adhesive sheet 60A with a single-sided release liner.
The supply route to the bonding roller 71 of the thin nanocrystalline alloy strip 10B is as described above.
The adhesive sheet 60A with a single-sided release liner is a long member obtained by peeling the release liner 60B as one release liner from the adhesive sheet 60 with a double-sided release liner as a long member.
Fig. 4 is a schematic cross-sectional view showing an adhesive sheet with a double-sided release liner attached.
As shown in fig. 4, the double-sided release liner-attached adhesive sheet 60 includes a single-sided release liner-attached adhesive sheet 60A, and a release liner 60B disposed on the opposite side of the release liner 60Ab when viewed from the adhesive layer 60Aa in the single-sided release liner-attached adhesive sheet 60A.
As shown in fig. 1 and 3, in this example, an adhesive sheet 60 with a double-sided release liner wound in a long form is placed in an unwinding device 61. Next, the double-sided release liner-attached adhesive sheet 60 is unwound from the unwinding device 61, and the release liner 60B is peeled from the unwound double-sided release liner-attached adhesive sheet 60. The single-sided release liner-attached adhesive sheet 60A obtained by peeling the release liner 60B from the double-sided release liner-attached adhesive sheet 60 is conveyed to the laminating roller 71 by conveying rollers 63 to 65 as conveying means.
The peeled release liner 60B is wound up by a winding device 62.
In the magnetic sheet manufacturing apparatus 100, the laminated body 70A obtained by the above-described lamination is continuously conveyed in a state where tension is applied. This continuous conveyance is achieved by the winding action of the winding device 81 described below.
The magnetic sheet manufacturing apparatus 100 includes a crack forming apparatus (specifically, a crack roller 72 and a pressing roller 73) for forming a crack in the thin nanocrystalline alloy strip 10B in the laminated body 70A continuously conveyed in a state where tension is applied to obtain a magnetic sheet 70B (see fig. 8).
Specifically, the crack is formed by bringing the crack roller 72 into contact with and pressing the thin nanocrystalline alloy strip 10B in the stacked body 70A continuously conveyed in a state where tension is applied.
The surface of the cracking roller 72 has a convex portion for forming cracks.
In the crack forming apparatus, a pressing roller 73 is disposed so as to face the crack roller 72.
In the formation of the crack, the laminate 70A is sandwiched between the crack roller 72 and the pressing roller 73 in such a manner that the nanocrystalline alloy ribbon 10B contacts the crack roller 72. As a result, the nanocrystalline alloy ribbon 10B in the laminate 70A is pressed by the irregularities of the surface of the cracking roller 72, and the nanocrystalline alloy ribbon 10B in the laminate 70A forms cracks 10BB. Thus, the magnetic sheet 70B (see fig. 3, 7, and 8 above) is obtained.
The magnetic sheet manufacturing apparatus 100 includes a conveyance roller 77, a pair of pinch rollers 74, a pair of flattening rollers 75, a conveyance roller 78, and a winding device 81 for winding the magnetic sheet 70B on the downstream side in the conveyance direction of the magnetic sheet 70B.
The conveying roller 77, the pair of pinch rollers 74, the pair of flattening rollers 75, and the conveying roller 78 may be omitted.
In the above, an example of the manufacturing method of the present disclosure is shown by the explanation of the magnetic sheet manufacturing apparatus 100, but the manufacturing method of the present disclosure is not limited to the above example.
Hereinafter, a description will be given of a magnetic sheet as a target of the production method of the present disclosure, and a preferred mode of each step in the production method of the present disclosure will be described.
< magnetic sheet >)
The magnetic sheet as a target of the production method of the present disclosure is a magnetic sheet obtained by laminating a thin ribbon of a nanocrystalline alloy having a crack and an adhesive sheet.
The magnetic sheet may include a thin ribbon of a nanocrystalline alloy having a crack, and elements other than the adhesive sheet (for example, a release liner).
For example, the magnetic sheet may include a thin ribbon of nanocrystalline alloy with a crack and an adhesive sheet with a single-sided release liner.
One example of the magnetic sheet is the magnetic sheet 70B shown in fig. 8, and one example of the adhesive sheet with a single-sided release liner is the adhesive sheet 60A with a single-sided release liner shown in fig. 5.
The magnetic sheet 70B shown in fig. 8 is a magnetic sheet including the nanocrystalline alloy ribbon 10BA having the crack 10BB and the adhesive sheet 60A with a single-sided release liner including the release liner 60Ab and the adhesive layer 60Aa as an adhesive sheet, in a configuration in which the nanocrystalline alloy ribbon 10BA having the crack is in contact with the adhesive layer 60 Aa.
The magnetic sheet can be used for various purposes.
For example, the magnetic sheet can be bonded to other members by an adhesive sheet in the magnetic sheet.
Further, by stacking a plurality of magnetic sheets, a stacked device including a plurality of nanocrystalline alloy ribbons having cracks can be formed.
The nanocrystalline alloy ribbon in the magnetic sheet has cracks, so that the effect of reducing eddy current loss is achieved.
The preferred dimensions (length, width, and thickness) of the thin strips of nanocrystalline alloy in the magnetic sheet are the same as the preferred dimensions (length, width, and thickness) of the thin strips of amorphous alloy described below.
The pressure-sensitive adhesive sheet is preferably a double-sided pressure-sensitive adhesive tape comprising a pressure-sensitive adhesive layer or a support and pressure-sensitive adhesive layers provided on both sides of the support.
As the pressure-sensitive adhesive layer and the support that can be included in the pressure-sensitive adhesive sheet, a pressure-sensitive adhesive layer and a support that are known in the field of double-sided pressure-sensitive adhesive tapes can be appropriately used, respectively.
An example of the embodiment in which the pressure-sensitive adhesive sheet is composed of a pressure-sensitive adhesive layer is the pressure-sensitive adhesive layer 60Aa shown in fig. 4, 5 and 8.
In this embodiment, the adhesive layer may be a single adhesive layer or two or more adhesive layers.
Fig. 9 is a schematic cross-sectional view showing the adhesive sheet 160A with a single-sided release liner, and the adhesive sheet 160A with a single-sided release liner is an example of an adhesive sheet with a single-sided release liner in the case of a double-sided adhesive tape including a support and adhesive layers provided on both sides of the support.
Fig. 10 is a schematic cross-sectional view showing the adhesive sheet 160A with a single-sided release liner and the adhesive sheet 160 with a double-sided release liner including the release liner 60B.
Fig. 11 is a schematic cross-sectional view showing a magnetic sheet 170B including an adhesive sheet 160A with a single-sided release liner.
As shown in fig. 9 to 11, the pressure-sensitive adhesive sheet 160A with a single-sided release liner includes a release liner 160Ab and a double-sided pressure-sensitive adhesive tape 160Aa as a pressure-sensitive adhesive sheet.
The double-sided pressure-sensitive adhesive tape 160Aa includes a support 160Aa1 and pressure-sensitive adhesive layers 160Aa2 provided on both sides of the support 160Aa 1.
The adhesive sheet 160A with a single-sided release liner shown in fig. 9 to 11 is different from the adhesive sheet 60A with a single-sided release liner shown in fig. 4, 5 and 8 in that the adhesive sheet is a double-sided adhesive tape 160Aa (single body) and the adhesive sheet is an adhesive layer 60Aa. Except for this, the structure of the single-sided release liner-attached adhesive sheet 160A is substantially the same as that of the single-sided release liner-attached adhesive sheet 60A.
In the magnetic sheet of the present disclosure, when the width of the adhesive sheet is defined as a width a and the width of the thin nanocrystalline alloy ribbon is defined as a width B, the value obtained by subtracting the width B from the width a (hereinafter also referred to as a difference [ width a-width B ]) is preferably 0.2mm to 3.0mm.
When the difference [ width a-width B ] is 0.2mm or more, even when the nanocrystalline alloy ribbon being continuously conveyed is displaced in the direction of width B, the adhesive sheet is easily attached over the entirety of the nanocrystalline alloy ribbon in the direction of width B.
When the difference [ width A-width B ] is 3.0mm or less, the width B of the thin strip of nanocrystalline alloy is easily ensured.
The lower limit of the difference [ width A-width B ] is more preferably 0.5mm, and still more preferably 1.0mm. The upper limit of the difference [ width A1-width B ] is preferably 2.5mm, more preferably 2.0mm.
In the magnetic sheet of the present disclosure, when the adhesive sheet is a double-sided adhesive tape including a support and adhesive layers provided on both sides of the support, when the width of the support is set to a width A1 and the width of the thin nanocrystalline alloy strip is set to a width B, a value obtained by subtracting the width B from the width A1 (hereinafter also referred to as a difference [ width A1-width B ]) is preferably 0.2mm to 3.0mm.
When the difference [ width A1 to width B ] is 0.2mm or more, the adhesive sheet is easily attached over the entire width B direction of the thin nanocrystalline alloy ribbon even when the thin nanocrystalline alloy ribbon being continuously conveyed is displaced in the width B direction.
When the difference [ width A1-width B ] is 3.0mm or less, the width B of the thin nanocrystalline alloy strip is easily ensured.
In addition, when the difference [ width A1 to width B ] is 3.0mm or less, the spacing between the thin strips of the nanocrystalline alloy can be suppressed from becoming too wide when the magnetic sheets are arranged in the width direction, and therefore, there is an advantage that the desired characteristics can be more easily obtained when the magnetic sheet is used as a yoke or a magnetic shield.
The lower limit of the difference [ width A1-width B ] is more preferably 0.5mm, and still more preferably 1.0mm. The upper limit of the difference [ width A1-width B ] is preferably 2.5mm, more preferably 2.0mm.
< preparation procedure >
The manufacturing method of the present disclosure may include a preparation step of preparing a coil material obtained by winding an elongated amorphous alloy ribbon.
The preparation step may be a step of manufacturing the coil, or may be a step of preparing only the previously manufactured coil.
As described above, when the amorphous alloy ribbon is produced by the single roll method, it is usually produced as a coil material as described above.
The amorphous alloy ribbon may be long, and its dimensions (length, width, and thickness) are not particularly limited.
The length of the amorphous alloy ribbon may be 500m or more, 1000m or more, 4000m or more, or 10000m or more.
The upper limit of the length of the amorphous alloy ribbon is also not particularly limited, and is, for example, 30000m.
The length of the amorphous alloy ribbon may be 500m or less, for example, 5m, 10m, 100m, or the like. In view of productivity, the length of the amorphous alloy ribbon is preferably long, for example, 500m to 30000m.
The width of the amorphous alloy ribbon is preferably 5mm to 300mm.
When the width of the amorphous alloy ribbon is 5mm or more, the amorphous alloy ribbon is excellent in manufacturing adaptability.
In the case where the width of the amorphous alloy ribbon is 300mm or less, the uniformity of nanocrystalline is more excellent when the nanocrystalline alloy ribbon is produced by heat treatment. The width of the amorphous alloy ribbon is preferably 200mm or less.
The width of the amorphous alloy ribbon is more preferably 5mm to 100mm, still more preferably 5mm to 50mm.
The thickness of the amorphous alloy ribbon is preferably 10 μm to 50 μm.
When the thickness of the amorphous alloy ribbon is 10 μm or more, the mechanical strength of the amorphous alloy ribbon can be easily ensured.
When the thickness of the amorphous alloy ribbon is 50 μm or less, crystallization of a part of the structure of the amorphous alloy ribbon can be suppressed.
The thickness of the amorphous alloy ribbon is more preferably 11 μm to 30 μm, still more preferably 12 μm to 27 μm.
The amorphous alloy ribbon is preferably an Fe-based amorphous alloy ribbon, and more preferably an Fe-based amorphous alloy ribbon having a composition represented by the following general formula (1).
(Fe 1－a M a ) 100－x－y－z－α－β－γ Cu x Si y B z M’ α M” β X γ (atomic%) … general formula (1)
In the general formula (1), the amino acid sequence of the compound,
m is Co and/or Ni, and the M is Co and/or Ni,
m' is at least one element selected from the group consisting of Nb, mo, ta, ti, zr, hf, V, cr, mn and W,
m' is at least one element selected from the group consisting of Al, a platinum group element, sc, a rare earth element, zn, sn and Re,
x is at least one element selected from the group consisting of C, ge, P, ga, sb, in, be and As,
a. x, y, z, alpha, beta and gamma respectively satisfy 0-a-0.5, 0.1-x-3, 0-y-30, 0-z-25, 5-y+z-30, 0-alpha-20, 0-beta-20 and 0-gamma-20.
< unreeling procedure >)
The manufacturing method of the present disclosure may include an unreeling step of unreeling the amorphous alloy ribbon from the coil.
The unreeling step is not particularly limited, and can be performed using a known unreeling device (for example, the unreeling device 11 described above).
< procedure for transporting amorphous alloy ribbon >)
The manufacturing method of the present disclosure includes an amorphous alloy ribbon transporting step of continuously transporting an amorphous alloy ribbon in a state where tension is applied.
The operation of continuously conveying the amorphous alloy thin strip in a state where tension is applied can be performed using a known conveying device (e.g., a conveying roller).
The application of tension to the amorphous alloy ribbon can be performed using known methods.
The tension can be applied by adjusting the unwinding speed of the amorphous alloy ribbon unwound from the unwinding device and the winding speed in a winding device for winding a magnetic sheet described below into a coil shape, for example.
The tension may be applied by providing a tension adjusting device (for example, the dancer roller 20 and the tension roller unit 21) for the amorphous alloy ribbon, and by adjusting the unwinding speed and the tension adjusting device for unwinding the amorphous alloy ribbon from the unwinding device.
The tension may be applied by providing a tension adjusting device (for example, the tension roller unit 40 and the dancer roller 51 described above) for the thin nanocrystalline alloy strip on the downstream side of the heat treatment device, and by setting the unwinding speed of the thin amorphous alloy strip from the unwinding device and adjusting the tension adjusting device.
The transport speed of the amorphous alloy ribbon is, for example, 1mpm to 10mpm, preferably 2mpm to 8mpm.
In the present disclosure, the unit of "mpm" refers to several meters per minute (m/min).
The amorphous alloy ribbon is subjected to a tensile stress by applying tension to the amorphous alloy ribbon.
The tensile stress applied to the amorphous alloy ribbon is preferably 10MPa to 60MPa, preferably 20MPa to 60MPa, and preferably 30MPa to 50MPa.
< Heat treatment Process >)
The manufacturing method of the present disclosure includes: the amorphous alloy ribbon is heat-treated by contacting the ribbon with a heating body in a state where tension is applied, to obtain a nanocrystalline alloy ribbon.
The preferable ranges of the transport speed of the amorphous alloy thin ribbon and the tensile stress applied to the amorphous alloy thin ribbon in the heat treatment step are the same as the preferable ranges of the transport speed of the amorphous alloy thin ribbon and the tensile stress applied to the amorphous alloy thin ribbon in the amorphous alloy thin ribbon transport step, respectively.
The heat treatment in the heat treatment step is preferably performed using a heat treatment apparatus (for example, the heat treatment apparatus 30) including a heating body (for example, the heating body 32) and a cooling body (for example, the cooling body 36).
In this case, it is preferable to include: the amorphous alloy ribbon continuously conveyed in a state where tension is applied is brought into contact with a heating body and then with a cooling body.
In such a preferred embodiment, the amorphous alloy ribbon is heated by contact with a heating body and then cooled by contact with a cooling body, thereby performing heat treatment.
As a result, nanocrystals are generated in the structure of the amorphous alloy ribbon during heating or during heating and cooling, and the nanocrystalline alloy ribbon is obtained.
The structure of the heat treatment apparatus including the heating body and the cooling body may be, for example, a structure of a heating chamber and a cooling chamber in an in-line annealing apparatus described in international publication No. 2020/235643.
As the heating body, for example, a metal member is used.
Examples of the material of the heating body include stainless steel, cu alloy, al alloy, and the like.
The temperature of the heating body may be any temperature as long as the amorphous alloy ribbon is heated to obtain the nanocrystalline alloy ribbon, and may be appropriately set in consideration of the composition of the amorphous alloy ribbon, and the like.
The temperature of the heating body is, for example, 400℃or higher, more preferably 400℃to 800℃and still more preferably 430℃to 700 ℃.
The contact time between the heating body and the amorphous alloy ribbon is preferably 1.0 to 10.0 seconds, more preferably 2.0 to 5.0 seconds, and even more preferably 3.0 to 4.0 seconds.
The contact time of the heating body with the amorphous alloy ribbon is preferably set so that the temperature of the amorphous alloy ribbon in contact with the heating body becomes the same temperature as that of the heating body.
As the cooling body, for example, a metal member can be used. Examples of the material of the cooling body 36 include stainless steel, cu alloy, and Al alloy.
The cooling body may or may not have a cooling mechanism (e.g., a water cooling mechanism), and may not have a special cooling mechanism (e.g., a naturally radiating cooling body).
The temperature of the heating body may be any temperature as long as the nanocrystalline alloy ribbon is obtained by cooling the heated amorphous alloy ribbon, and may be appropriately set in consideration of the composition of the amorphous alloy ribbon, and the like.
The temperature of the cooling body is, for example, 350 ℃ or lower, more preferably 0 ℃ to 300 ℃, still more preferably 10 ℃ to 250 ℃.
The contact time of the cooling body with the amorphous alloy ribbon is preferably 0.3 seconds to 10.0 seconds, more preferably 0.5 seconds to 4.0 seconds, and even more preferably 1.0 seconds to 4.0 seconds.
The heating body and the cooling body may have suction holes at contact surfaces with the amorphous alloy ribbon, respectively. By performing reduced pressure suction on the amorphous alloy ribbon through the suction hole, contact of the heating body and/or the cooling body with the amorphous alloy ribbon can be performed more stably.
The shape of the upper surfaces of the heating body 32 and the cooling body 36 is not limited to a flat surface.
A modification of the shape of the upper surfaces of the heating body and the cooling body will be described below.
Fig. 12 is a partially enlarged view schematically showing a modification of the heat treatment apparatus.
The heat treatment apparatus 30X of the modification shown in fig. 12 is different in shape of the upper surfaces of the heating body and the cooling body from the heat treatment apparatus 30 of fig. 2. Except for this point, the structure of the heat treatment apparatus 30X is the same as that of the heat treatment apparatus 30.
Specifically, the shape of the upper surface of the heating body 32 in the heat treatment apparatus 30 shown in fig. 2 is a plane, whereas the shape of the upper surface of the heating body 32X in the heat treatment apparatus 30X shown in fig. 12 is a curved surface that bulges upward (on the side opposite to the direction of gravity.
More specifically, as shown in fig. 12, in a cross section of the heating body 32X parallel to the sheet conveying direction and parallel to the gravitational direction, a line corresponding to the upper surface of the heating body 32 is arcuate.
As described above, tension is applied to the continuously advancing amorphous alloy ribbon 10A.
Therefore, the force pressing the upper surface of the heating body 32X, which is the curved surface, is easily applied to the continuously conveyed amorphous alloy ribbon 10A, and as a result, the contact between the amorphous alloy ribbon 10A and the heating body 32X can be maintained more stably. As a result, the amorphous alloy ribbon 10A is heated more stably, and as a result, the nanocrystalline alloy ribbon 10B is obtained stably.
The shape of the upper surface of the cooling body 36X is also the same as the shape of the upper surface of the heating body 32X described above (i.e., the curved surface that bulges upward). Further, since tension is also applied to the amorphous alloy ribbon 10A after passing through the heating body 32X, a force pressing the amorphous alloy ribbon 10A after passing through the heating body 32X against the upper surface of the cooling body 36X is applied, as a result, the contact between the amorphous alloy ribbon 10A after passing through the heating body 32X and the cooling body 36X is more stably maintained, and as a result, the amorphous alloy ribbon 10A after passing through the heating body 32X is more stably cooled, and as a result, the nanocrystalline alloy ribbon 10B is stably obtained.
In addition, as described above, cooling of the heated amorphous alloy ribbon is not dependent on contact with a cooling body, and may be performed by air cooling, for example, so the cooling body is not an essential element in the present disclosure.
< procedure of transporting nanocrystalline alloy ribbon >)
The production method of the present disclosure includes a nanocrystalline alloy ribbon transporting step of continuously transporting the nanocrystalline alloy ribbon produced in the heat treatment step in a state where tension is applied.
The operation of continuously conveying the thin nanocrystalline alloy ribbon in a state where tension is applied can be performed using a known conveying device (e.g., a conveying roller).
The application of tension to the thin ribbon of nanocrystalline alloy can be performed using known methods.
The nanocrystalline alloy ribbon transport process preferably includes: tension of the thin strip of nanocrystalline alloy is adjusted using a tension adjusting device (e.g., the tension roller unit 40 and the dancer roller 51).
The tension of the thin nanocrystalline alloy ribbon (i.e., the tension suitable for the conditions of the heat treatment process) coming out of the heat treatment apparatus is easily adjusted to the tension suitable for the subsequent bonding process by the tension adjustment apparatus. Therefore, even when the tension suitable for the conditions of the heat treatment process is different from the tension suitable for the bonding process, the tension of the nanocrystalline alloy ribbon obtained in the heat treatment process is easily adjusted to the tension suitable for the subsequent bonding process.
In the manufacturing method of the present disclosure, when both the tension adjusting device (for example, the tension roller unit 40 and the dancer roller 51) for the nanocrystalline alloy ribbon and the tension adjusting device (for example, the dancer roller 20 and the tension roller unit 21) for the amorphous alloy ribbon are used, the tension adjusting device for the nanocrystalline alloy ribbon and the tension adjusting device for the amorphous alloy ribbon may interact with each other to adjust the tension of the amorphous alloy ribbon and the tension of the nanocrystalline alloy ribbon.
In this case, from the viewpoint of more effectively adjusting the tension, it is preferable that the dancer roller 20, the tension roller unit 21, the tension roller unit 40, and the dancer roller 51 be disposed in this order from the upstream side toward the downstream side as in the magnetic sheet manufacturing apparatus 100 described above.
The transport speed of the thin ribbon of nanocrystalline alloy is, for example, 1mpm to 10mpm, preferably 2mpm to 8mpm.
The tensile stress is applied to the thin strip of nanocrystalline alloy by applying tension to the thin strip of nanocrystalline alloy.
The tensile stress applied to the nanocrystalline alloy ribbon is preferably 2MPa to 105MPa.
< bonding Process >
The production method of the present disclosure includes a bonding step in which a nanocrystalline alloy ribbon (for example, nanocrystalline alloy ribbon 10B) is bonded to an adhesive sheet (for example, adhesive layer 60Aa in adhesive sheet with a single-sided release liner 60A shown in fig. 5) in a state where tension is applied, to obtain a laminate (for example, laminate 70A shown in fig. 7).
The bonding of the nanocrystalline alloy ribbon and the adhesive sheet (for example, an adhesive sheet with a single-sided release liner; the same applies hereinafter) in the bonding step is preferably performed using a bonding apparatus.
The bonding device is preferably a pair of bonding rollers (for example, bonding roller 71). In this case, the nanocrystalline alloy ribbon and the adhesive sheet are bonded by pressing them together by a pair of bonding rollers.
The preferable ranges of the conveyance speed of the nanocrystalline alloy ribbon and the tensile stress applied to the nanocrystalline alloy ribbon in the bonding step are the same as the preferable ranges of the conveyance speed of the nanocrystalline alloy ribbon and the tensile stress applied to the nanocrystalline alloy ribbon in the nanocrystalline alloy ribbon conveyance step, respectively.
In the bonding step, the nanocrystalline alloy ribbon continuously conveyed in a state where tension is applied is preferably bonded to the adhesive sheet continuously conveyed in a state where tension is applied.
This enables the nanocrystalline alloy ribbon to be more favorably bonded to the adhesive sheet.
Further, by bonding both the thin nanocrystalline alloy ribbon and the adhesive sheet in a state where tension is applied thereto, it is possible to suppress the occurrence of unnecessary stress in the thin nanocrystalline alloy ribbon after bonding.
The conveyance speed of the pressure-sensitive adhesive sheet in the bonding step is, for example, 1mpm to 10mpm, and preferably 2mpm to 8mpm.
In the bonding step, when tension is applied to the adhesive sheet, tensile stress is applied to the adhesive sheet.
The tensile stress applied to the adhesive sheet is preferably 0.2 to 5.0MPa, preferably 0.5 to 3.0MPa, and preferably 1.0 to 2.0MPa.
The bonding step preferably includes: before the nanocrystalline alloy ribbon is bonded to the adhesive sheet, the positions of both end surfaces in the width direction of the nanocrystalline alloy ribbon are adjusted. Thus, positional deviation in the direction of the width of the continuously conveyed nanocrystalline alloy ribbon (i.e., the width B described above) can be more effectively suppressed (for example, positional deviation in the case of meandering conveyance).
The adjustment of the positions of both end surfaces of the nanocrystalline alloy ribbon in the width direction can be performed using a ribbon end surface position adjustment device (for example, a ribbon end surface position adjustment device 54; see fig. 1 and 3). In this case, it is preferable to use a tape end face detection device (for example, a tape end face detection device 55; see fig. 1 and 3) to adjust the positions of both end faces while detecting the positions of both end faces in the width direction of the tape.
The production method of the present disclosure preferably includes a step of preparing a double-sided release liner-attached adhesive sheet (for example, double-sided release liner-attached adhesive sheet 60 in fig. 4) as a supply source of the adhesive sheet, wherein the double-sided release liner-attached adhesive sheet includes: an adhesive sheet with a single-sided release liner (for example, an adhesive sheet 60A with a single-sided release liner in fig. 5) including an adhesive sheet and a release liner (hereinafter referred to as a first release liner); and a release liner (hereinafter referred to as a second release liner; e.g., release liner 60B in fig. 4) disposed on the adhesive sheet side of the adhesive sheet with a single-sided release liner.
The double-sided release liner-attached adhesive sheet is a laminate having a laminated structure denoted by "first release liner/adhesive sheet/second release liner".
The structure and material of the pressure-sensitive adhesive sheet with a double-sided release liner can be appropriately used as those of a known double-sided pressure-sensitive adhesive tape.
The production method of the present disclosure preferably further includes a step of peeling the second release liner from the pressure-sensitive adhesive sheet with a double-sided release liner to obtain a pressure-sensitive adhesive sheet with a single-sided release liner.
In this case, the obtained adhesive sheet with a single-sided release liner is bonded to the nanocrystalline alloy ribbon in the bonding step.
The adhesive sheet with the double-sided release liner is preferably an elongated member.
In this case, the manufacturing method of the present disclosure preferably includes the steps of:
a step of placing a roll material, which is obtained by winding a long adhesive sheet with a double-sided release liner, in an unreeling device;
a step of unreeling the adhesive sheet with the double-sided release liner from the roll by an unreeling machine;
a step of peeling the second release liner from the unreeled double-sided release liner-attached adhesive sheet to obtain a single-sided release liner-attached adhesive sheet; and
and continuously carrying the obtained adhesive sheet with the single-sided release liner under the state of applying tension.
In this case, in the bonding step, the adhesive sheet with the single-sided release liner, which is continuously conveyed in a state where tension is applied, is bonded to the nanocrystalline alloy ribbon, which is continuously conveyed in a state where tension is applied.
< crack Forming procedure >)
The manufacturing method of the present disclosure includes a crack forming step in which a nanocrystalline alloy ribbon (e.g., nanocrystalline alloy ribbon 10B in laminate 70A shown in fig. 7) of a laminate (e.g., laminate 70A shown in fig. 7) is cracked by contact with a crack roller (e.g., crack roller 72 shown in fig. 3) to obtain a magnetic sheet (e.g., magnetic sheet 70B shown in fig. 8).
As the cracking roller, a roller in which a plurality of convex portions are arranged on the peripheral surface (for example, a cracking roller 72 in fig. 3) is preferable.
The formation of the crack in the thin strip of the nanocrystalline alloy in the crack forming step is preferably performed using a crack forming apparatus including a crack roller and a pressing roller (for example, pressing roller 73 in fig. 3) disposed opposite to the crack roller.
In the manufacturing method of the present disclosure, a plurality of crack rollers may be arranged in the conveyance direction of the laminate, and the thin nanocrystalline alloy ribbon of the conveyed laminate may be subjected to crack formation by the plurality of crack rollers.
The descriptions in paragraphs 0046 to 0065 of International publication No. 2020/235643 may also be applied to the formation of cracks in thin strips of nanocrystalline alloy.
< winding Process >)
The production method of the present disclosure may include a step of winding the magnetic sheet into a coil shape (hereinafter, also referred to as a "winding step").
By this step, a magnetic sheet wound in a coil shape is obtained.
The winding step is not particularly limited, and can be performed using a known winding device (for example, the winding device 81 in fig. 1 and 3).
The production method of the present disclosure may include steps other than the above steps as necessary.
[ magnetic sheet manufacturing apparatus ]
The magnetic sheet manufacturing apparatus of the present disclosure (for example, the magnetic sheet manufacturing apparatus 100 in fig. 1) includes:
an amorphous alloy ribbon carrying device for continuously carrying an amorphous alloy ribbon in a state where tension is applied;
a heat treatment device including a heating body in contact with the amorphous alloy ribbon in a state where tension is applied, and performing heat treatment on the amorphous alloy ribbon to obtain a nanocrystalline alloy ribbon;
a nanocrystalline alloy ribbon carrying device that continuously carries the nanocrystalline alloy ribbon in a state where tension is applied;
a bonding device for bonding the nanocrystalline alloy ribbon and the adhesive sheet in a state where tension is applied, thereby obtaining a laminate; and
and a crack forming device which comprises a crack roller in contact with the nanocrystalline alloy ribbon of the laminated body, and is used for forming cracks on the nanocrystalline alloy ribbon of the laminated body to obtain the magnetic sheet.
The magnetic sheet manufacturing apparatus of the present disclosure may include elements (devices or members) other than the above as necessary.
The magnetic sheet manufacturing apparatus of the present disclosure is suitable as an apparatus in the manufacturing method of the present disclosure described above.
Therefore, the magnetic sheet manufacturing apparatus of the present disclosure can efficiently manufacture the above-described magnetic sheet.
The magnetic sheet manufacturing apparatus of the present disclosure preferably includes a thin-ribbon end-face position adjustment device (for example, the thin-ribbon end-face position adjustment device 54 in fig. 1 and 3) for adjusting the positions of both end faces of the thin ribbon of the nanocrystalline alloy in the width direction between the heat treatment device and the bonding device.
This can more effectively suppress the deviation of the bonding position between the thin nanocrystalline alloy ribbon and the adhesive sheet (specifically, the positional deviation in the width direction of the thin nanocrystalline alloy ribbon).
The magnetic sheet manufacturing apparatus of the present disclosure preferably includes a tension adjusting device (e.g., dancer roll 20 and tension roll unit 21 in fig. 1) for adjusting the tension of the nanocrystalline alloy ribbon between the heat treatment apparatus and the bonding apparatus.
Thus, the tension of the thin nanocrystalline alloy ribbon (i.e., the tension suitable for the conditions of the heat treatment process) coming out of the heat treatment apparatus can be easily adjusted to the tension suitable for the subsequent bonding process. Therefore, even when the tension suitable for the conditions of the heat treatment process is different from the tension suitable for the bonding process, the tension of the nanocrystalline alloy ribbon obtained in the heat treatment process is easily adjusted to the tension suitable for the subsequent bonding process.
As a preferable mode of the magnetic sheet manufacturing apparatus of the present disclosure, the preferable mode of the manufacturing method of the present disclosure described above can be applied.
Examples
Hereinafter, examples of the present invention are shown, but the present invention is not limited to the following examples.
[ example 1 and 2 ]
As examples 1 and 2, specific examples of manufacturing conditions assuming the following cases are shown: a magnetic sheet having the same structure as the magnetic sheet 170B shown in fig. 11 is manufactured using a magnetic sheet manufacturing apparatus having the same structure as the magnetic sheet manufacturing apparatus 100 shown in fig. 1.
As the amorphous alloy ribbon, for example, the above general formula (1) (i.e., "(Fe) 1－a M a ) 100－x－y－z－α－β－γ Cu x Si y B z M’ α M” β X γ (at%) … (1) ") the values of a, x, y, z, α, β and γ satisfy a=0, 0.1.ltoreq.x.ltoreq.3, 0 < y.ltoreq.30, 0 < z.ltoreq.25, 5.ltoreq.y+z.ltoreq.30, 0 < α.ltoreq.20, β=0 and γ=0, respectively.
As the adhesive sheet, for example, a double-sided adhesive tape including a support and adhesive layers provided on both sides of the support (i.e., an adhesive sheet 160Aa in the double-sided release liner-attached adhesive sheet 160 shown in fig. 10) is used.
The width of the adhesive sheet in table 1 refers to the width of the double-sided adhesive tape, and it is assumed that the width is equal to the width of the support in the double-sided adhesive tape.
TABLE 1
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Claims (8)
1. A method for manufacturing a magnetic sheet, comprising:
an amorphous alloy ribbon carrying step of continuously carrying the amorphous alloy ribbon in a state where tension is applied;
a heat treatment step of heat-treating the amorphous alloy ribbon by contacting the amorphous alloy ribbon with a heating body in a state where tension is applied to the ribbon, thereby obtaining a nanocrystalline alloy ribbon;
a nanocrystalline alloy ribbon carrying step of continuously carrying the nanocrystalline alloy ribbon in a state where tension is applied;
a bonding step of bonding the nanocrystalline alloy ribbon and the adhesive sheet in a state where tension is applied to the ribbon, thereby obtaining a laminate; and
a crack forming step of forming a crack in the thin nanocrystalline alloy strip of the laminate by contact with a crack roller to obtain a magnetic sheet,
the amorphous alloy ribbon carrying step, the heat treatment step, the nanocrystalline alloy ribbon carrying step, the bonding step, and the crack forming step are sequentially and continuously performed.
2. The method for producing a magnetic sheet according to claim 1, wherein,
When the width of the adhesive sheet is set to a width a and the width of the nanocrystalline alloy ribbon is set to a width B, the value obtained by subtracting the width B from the width a is 0.2mm to 3.0mm.
3. The method for producing a magnetic sheet according to claim 1 or 2, wherein,
the bonding step includes: before the nanocrystalline alloy ribbon is bonded to the adhesive sheet, positions of both end surfaces of the nanocrystalline alloy ribbon in the width direction are adjusted.
4. The method for producing a magnetic sheet according to claim 1 or 2, wherein,
the nanocrystalline alloy ribbon handling process includes: and adjusting the tension of the nanocrystalline alloy ribbon by using a tension adjusting device.
5. The method for producing a magnetic sheet according to claim 1 or 2, wherein,
the pressure-sensitive adhesive sheet is a double-sided pressure-sensitive adhesive tape comprising a pressure-sensitive adhesive layer or a support and pressure-sensitive adhesive layers provided on both sides of the support.
6. A magnetic sheet manufacturing apparatus, comprising:
an amorphous alloy ribbon carrying device for continuously carrying an amorphous alloy ribbon in a state where tension is applied;
a heat treatment device including a heating body in contact with the amorphous alloy ribbon in a state where tension is applied, and performing heat treatment on the amorphous alloy ribbon to obtain a nanocrystalline alloy ribbon;
A nanocrystalline alloy ribbon carrying device that continuously carries the nanocrystalline alloy ribbon in a state where tension is applied;
a bonding device for bonding the nanocrystalline alloy ribbon and the adhesive sheet in a state where tension is applied, thereby obtaining a laminate; and
and a crack forming device including a crack roller in contact with the nanocrystalline alloy ribbon of the laminate, wherein the nanocrystalline alloy ribbon of the laminate is cracked to obtain a magnetic sheet.
7. The apparatus for manufacturing a magnetic sheet according to claim 6, wherein,
the apparatus further comprises a ribbon end face position adjusting device for adjusting positions of both end faces of the nanocrystalline alloy ribbon in a width direction between the heat treatment device and the bonding device.
8. The apparatus for manufacturing a magnetic sheet according to claim 6 or 7, wherein,
and a tension adjusting device for adjusting the tension of the nanocrystalline alloy ribbon between the heat treatment device and the bonding device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022111464A JP2024009722A (en) | 2022-07-11 | 2022-07-11 | Manufacturing method of magnetic sheet and manufacturing device of magnetic sheet |
| JP2022-111464 | 2022-07-11 |
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| CN117393296A true CN117393296A (en) | 2024-01-12 |
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| JP (1) | JP2024009722A (en) |
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| CN (1) | CN117393296A (en) |
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| US20220293313A1 (en) | 2019-05-21 | 2022-09-15 | Hitachi Metals, Ltd. | Production method for nanocrystalline alloy ribbon having resin film |
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