CN117025914A - Nanocrystalline strip tension orientation method and tension orientation heat treatment equipment - Google Patents
Nanocrystalline strip tension orientation method and tension orientation heat treatment equipment Download PDFInfo
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- CN117025914A CN117025914A CN202311043548.XA CN202311043548A CN117025914A CN 117025914 A CN117025914 A CN 117025914A CN 202311043548 A CN202311043548 A CN 202311043548A CN 117025914 A CN117025914 A CN 117025914A
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- orientation
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000005291 magnetic effect Effects 0.000 abstract description 28
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 32
- 230000035699 permeability Effects 0.000 description 13
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000002159 nanocrystal Substances 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2201/00—Treatment for obtaining particular effects
- C21D2201/03—Amorphous or microcrystalline structure
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention provides a nanocrystalline strip tension orientation method, which comprises the steps of applying tension along the length direction of a strip and heating the strip, wherein the applied tension is at least 3N, the heating time of the strip is at least 1min, and the heating temperature is 500-700 ℃; compared with the traditional high-temperature strong magnetic orientation method, the orientation method can finish orientation by only applying a pulling force along the length direction of the strip when heating the strip, and an iron core heated to a certain temperature is not required to be transferred into a strong magnetic field, so that the production continuity is enhanced, and the production efficiency is also improved; the attenuation of the effective magnetic conductivity is smaller, and the stability is better.
Description
Technical Field
The invention relates to the field of amorphous nanocrystalline strip orientation, in particular to a nanocrystalline strip tension orientation method.
Background
In the prior art, in order to obtain higher magnetic permeability of the nanocrystalline strip, a high-temperature strong magnetic orientation method is generally adopted, such as an ultracrystalline iron core strong magnetic annealing process described in publication No. CN 102496450B;
the process comprises the steps of winding a nanocrystalline strip into an iron core, performing heat treatment in a vacuum heat treatment furnace to a certain temperature, pushing the vacuum heat treatment furnace into a strong magnetic field, and orienting the strip wound into the iron core through high-temperature strong magnetic to increase magnetic permeability, wherein the method has the following problems:
on one hand, the orientation method is limited by a field, and a vacuum heat treatment furnace needs to be transported, so that the production continuity is poor, and the production efficiency is low;
on the one hand, experiments show that the effective permeability of the iron core is severely attenuated when a large bias inductance is applied to the iron core manufactured by the orientation method.
Disclosure of Invention
In view of the above, the present invention provides a method for aligning a nanocrystalline strip in tension.
In order to solve the technical problems, the invention adopts the following technical scheme:
the nanocrystalline strip tension orientation method applies tension along the length direction of the strip and heats the strip.
The applied tension is at least 3N.
The heating time of the strip is at least 1min.
The heating temperature is 500-700 ℃.
The width of the strip is at least 5mm and the thickness of the strip is at least 15 μm.
The tension orientation heat treatment equipment using the tension orientation method of the nanocrystalline strip comprises a tape unreeling device, a tape collecting device and a heating device.
The device also comprises a force application device, wherein the force application device comprises a support frame and a belt wheel;
the belt wheel is arranged in the support frame in a sliding manner along the height direction of the support frame through an axial sliding rod; the counterweight body for applying the tensile force is connected with the axial slide rod in a hanging way.
An iron core is manufactured by a nanocrystalline strip pulling force orientation method.
The invention has the advantages and positive effects that:
(1) According to the orientation method, orientation can be completed only by applying a pulling force along the length direction of the strip during heating, and the iron core heated to a certain temperature is not required to be transferred into a strong magnetic field, so that production continuity is enhanced, and production efficiency is also improved.
(2) The iron core manufactured by the technical scheme has the advantages that when larger bias current is input, the effective permeability attenuation is only about 2%, and the stability is better.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
In the drawings:
FIG. 1 is a schematic diagram of a nanocrystalline strip pulling force orientation method of the present invention;
FIG. 2 is a block diagram of a force applying device in the tensile force orientation heat treatment apparatus of the present invention;
FIG. 3 is a cross-sectional view of a force applying device in a pull oriented thermal processing apparatus of the present invention;
in the figure: the device comprises a force application device 1, a support frame 11, a belt pulley 12, an axial sliding rod 13, a tension sensor 14, a position sensor 15, a heating device 2, a counterweight body 3, a belt releasing device 4, a belt collecting device 5, a first guide roller set 61 and a second guide roller set 62.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The tension orientation method of the nanocrystalline strip provided by the invention comprises the following steps: applying a tension force along the length direction of the strip and heating the strip, wherein the tension force is applied along the length direction of the strip, so that the strip has a constant tension when moving between the tape unreeling device 4 and the tape reeling device 5, and the strip is axially oriented along the magnetic core when being reeled;
specifically, the applied tension is at least 3N, the heating time of the strip is at least 1min, the heating temperature is 500-700 ℃, the width of the strip is at least 5mm, and the thickness of the strip is at least 15 μm.
Compared with a high-temperature strong magnetic orientation method, the high Wen Lali orientation method provided by the invention does not need to be transferred into a strong magnetic field after the iron core is heated to a certain temperature, so that the production continuity is enhanced, and the production efficiency is greatly improved while higher magnetic permeability is obtained.
In one embodiment of the present invention, the heating device 2 for heating the strip material adopts a heating furnace of a long strip-shaped structure with both ends provided with a feed port and a discharge port; the belt unreeling device 4 and the belt reeling device 5 adopt motors with output ends connected with belt reels, and the length of the belt passing through the heating furnace can be adjusted by the reeling and unreeling speed of the motors; the force application device 1 for applying tension to the belt material adopts a belt pulley 12 and a counterweight body 3, a supporting frame 1 is arranged between the belt releasing device 4 and the heating device 2, the belt pulley 12 is slidably arranged in the supporting frame 1 along the height direction of the supporting frame 1 through an axial sliding rod 13, when the counterweight body 3 is hung on the axial sliding rod 13 of the belt pulley 12, the belt pulley 12 is pressed against the belt material under the action of the counterweight body 3, and further the tension is applied to the belt material, and the adjustment of the tension can be realized by increasing or decreasing the number of the counterweight bodies 3.
In another embodiment of the invention, the method of applying tension to the strip material is: an adjusting roller set is arranged between the belt releasing device 4 and the belt collecting device 5, a belt material passes through the two rollers vertically arranged in the adjusting roller set, the distance between the two rollers is adjustable, the motor of the belt releasing device 4 is different from the motor of the belt collecting device 5 in rotating speed, the belt material between the adjusting roller set and the belt releasing device 4 is in a loose state, the belt material between the adjusting roller set and the belt collecting device 5 is in a tension state, and the belt material is tensioned through the belt collecting device 5, so that the tension is applied to the belt material along the length direction of the belt material.
In another embodiment of the invention, the method of applying tension to the strip material is: a movable adjusting roller set is arranged between the belt releasing device 4 and the belt collecting device 5, a belt material passes through the space between two rollers vertically arranged in the adjusting roller set, and the belt material is in a tensioning state through the integral displacement of the adjusting roller set, so that the tension is applied to the belt material along the length direction of the belt material.
Further, in order to solve the problem that when a large bias current is input, the rate of effective magnetic permeability is reduced, the invention respectively adopts the modes of high Wen Lali orientation and high-temperature strong magnetic orientation to prepare the iron core, reduces the magnetic permeability to 2000H/m, then applies 20 ampere bias current, and then measures the magnetic permeability to obtain comparative data in a list; wherein L is an inductance value, and mu is magnetic permeability;
TABLE 1
As can be seen from table 1, by experimental comparison, when a large bias current is input, the effective permeability of the iron core manufactured by the high Wen Lali orientation method is attenuated by about 2%; the iron core manufactured by the high-temperature strong magnetic orientation method has the effective magnetic permeability attenuated at about 50% when a large bias current is input;
therefore, when a large bias current is input, the attenuation amplitude of the effective magnetic conductivity of the iron core manufactured by the high Wen Lali orientation method is far smaller than that of the iron core manufactured by the high-temperature strong magnetic orientation method, the stability is better, and the iron core is more suitable for being used on an ammeter transformer with higher requirement on the effective magnetic conductivity.
Furthermore, through continuous experiments, the difference is more obvious particularly when compared with the special-shaped iron core, because the special-shaped iron core is coiled by the strip firstly and then subjected to high-temperature strong magnetic orientation, part of the strip is shielded during orientation due to the influence of the shape of the iron core, the orientation consistency of the strip is poor, and the obtained magnetic permeability is greatly reduced.
Specifically, in experimental analysis table 1, the detailed embodiments of the five gauge strips when subjected to high Wen Lali orientation were:
the width of the first nano-crystal strip is 5mm, the thickness is 15 mu m, the applied tensile force is 3N, the length of a heating cavity in the heating device 2 is 10m, the temperature in the furnace of the heating device 2 is 590 ℃, the moving speed of the strip in the heating furnace is 10m/min, and the heating time of the nano-crystal strip is 1min;
the width of the second nanocrystalline strip is 7mm, the thickness is 16 mu m, the applied tensile force is 3.2N, the length of a heating cavity in the heating device 2 is 10m, the temperature in the furnace of the heating device 2 is 590 ℃, the winding speed of the tape collecting device 5 is 9.5m/min, and the heating time of the nanocrystalline strip is 1.1min;
the third nanocrystalline strip has a width of 8.5mm, a thickness of 16 μm, an applied tensile force of 3.8N, a length of a heating cavity in the heating device 2 of 10m, a temperature in the heating device 2 of 590 ℃, a moving speed of the strip in the heating furnace of 8m/min, and a heating duration of the nanocrystalline strip of 1.25min;
the width of the fourth nano-crystal strip is 9mm, the thickness is 16 mu m, the applied tensile force is 4.7N, the length of a heating cavity in the heating device 2 is 10m, the temperature in the heating device 2 is 590 ℃, the moving speed of the strip in the heating furnace is 7.4m/min, and the heating time of the nano-crystal strip is 1.34min;
the width of the fifth nanocrystalline strip is 10mm, the thickness is 17 mu m, the applied tensile force is 5N, the length of a heating cavity in the heating device 2 is 10m, the temperature in the furnace of the heating device 2 is 590 ℃, the moving speed of the strip in the heating furnace is 6.5m/min, and the heating time of the nanocrystalline strip is 1.53min;
in the high-temperature ferromagnetic orientation method, the time for moving the strip in the furnace is extremely short and only 10 to 60 seconds, which is a rapid heating mode, so that annealing process treatment is not needed, and the strip is directly rolled up to be oriented along the axial direction of the magnetic core.
Further, the technical scheme also provides a tensile force orientation heat treatment device using the nanocrystalline strip tensile force orientation method, which comprises a tape unreeling device 4, a tape reeling device 5 and a heating device 2;
the heating device 2 adopts a heating furnace with a strip-shaped structure, and two ends of the heating furnace are provided with a feeding hole and a discharging hole; the belt unreeling device 4 and the belt reeling device 5 adopt motors with output ends connected with belt reels, and the length of the belt passing through the heating furnace can be adjusted by the reeling and unreeling speed of the motors;
the device also comprises a force application device 1, the force application device 1 comprises a support frame 11 and a belt wheel 12, the support frame 1 is arranged between the belt releasing device 4 and the heating device 2, the belt wheel 12 is arranged in the support frame 1 in a sliding way along the height direction of the support frame 1 through an axial sliding rod 13, when the counterweight body 3 is hung on the axial sliding rod 13 of the belt pulley 12, the belt pulley 12 is pressed against the belt material under the action of the counterweight body 3, so that tension is applied to the belt material, the adjustment of the tension can be realized by increasing or decreasing the number of the counterweight bodies 3, and the counterweight body 3 can adopt weights and the like.
In another embodiment of the invention, the method of applying tension to the strip material is: an adjusting roller set is arranged between the belt releasing device 4 and the belt collecting device 5, a belt material passes through two rollers which are vertically arranged in the guide roller set, the distance between the two rollers is adjustable, the motor of the belt releasing device 4 and the motor of the belt collecting device 5 are different in rotating speed, the belt material between the adjusting roller set and the belt releasing device 4 is in a loose state, the belt material between the adjusting roller set and the belt collecting device 5 is in a tension state, and the belt material is tensioned through the belt collecting device 5, so that the tension is applied to the belt material along the length direction of the belt material.
Further, a tension sensor 14 can be arranged on the supporting frame 11 or other supporting structures, and the magnitude of the applied tension can be adjusted according to the reading of the tension sensor 14; the tension sensor 14 is a commercially available product, reference being made to the following links:
http://www.youshiw.com/shop/videos/？id＝53767
further, a plurality of position sensors 15 may be sequentially disposed along the height direction of the supporting frame 11; the position sensor 15 is used for detecting the position of the weight body 3;
considering that the tape feeding device 4 and the tape receiving device 5 may have a difference in the receiving speed when being affected by external factors during the actual tape receiving and feeding process, the position of the weight body 3 may be changed, so that the position sensor 15 detects the position of the weight body 3, thereby adjusting the rotation speeds of the tape feeding device 4 and the tape receiving device 5 in time.
Furthermore, a first guiding roller set 61 may be further disposed between the supporting frame 11 and the tape releasing device 4, and a second guiding roller set 62 may be further disposed between the heating device 2 and the tape collecting device 5, so as to guide the transportation of the tape, and avoid the deviation of the tape during a long stroke.
The invention also provides an iron core, which is manufactured by using the nanocrystalline strip tension orientation method, and has smaller effective permeability attenuation and better stability when larger bias current is input.
The working principle and working process of the invention are as follows:
the belt pulley 12 is pressed against the belt material under the action of the counterweight body 3, a pulling force is applied to the belt material in the length direction of the belt material, the belt material continuously passes through the heating device 2 under the action of the belt releasing device 4 and the belt collecting device 5, the belt material moves in the heating furnace for a very short time of only 10 to 60 seconds, and the belt material is rapidly heated, so that the annealing process treatment is not needed, and the belt collecting device 5 directly winds up to enable the belt material to be oriented along the axial direction of the magnetic core.
The foregoing describes the embodiments of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by this patent.
Claims (8)
1. The method for stretching and orienting the nanocrystalline strip is characterized in that stretching force is applied along the length direction of the strip and the strip is heated.
2. The method of claim 1, wherein the applied tension is at least 3N.
3. The method of claim 1, wherein the ribbon is heated for a period of at least 1 minute.
4. The method of claim 1, wherein the heating temperature is 500-700 ℃.
5. The method of claim 1, wherein the ribbon has a width of at least 5mm and a thickness of at least 15 μm.
6. A tensile force orientation heat treatment apparatus using the nanocrystalline strip tensile force orientation method according to any one of claims 1 to 5, characterized by comprising a tape unreeling device (4), a tape reeling device (5), and a heating device (2).
7. The tensile force orientation heat treatment apparatus according to claim 6, further comprising a force application device (1), the force application device (1) comprising a support frame (11) and a pulley (12);
the belt wheel (12) is arranged in the support frame (1) in a sliding manner along the height direction of the support frame (1) through an axial sliding rod (13); the counterweight body (3) for applying the tensile force is connected with the axial slide rod (13) in a hanging way.
8. An iron core, characterized in that it is manufactured using the nanocrystalline strip tension orientation method according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311043548.XA CN117025914A (en) | 2023-08-18 | 2023-08-18 | Nanocrystalline strip tension orientation method and tension orientation heat treatment equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311043548.XA CN117025914A (en) | 2023-08-18 | 2023-08-18 | Nanocrystalline strip tension orientation method and tension orientation heat treatment equipment |
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| CN117025914A true CN117025914A (en) | 2023-11-10 |
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| CN202311043548.XA Pending CN117025914A (en) | 2023-08-18 | 2023-08-18 | Nanocrystalline strip tension orientation method and tension orientation heat treatment equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117512322A (en) * | 2023-11-22 | 2024-02-06 | 青岛磁瑞通新材料有限公司 | Constant-tension continuous heat treatment device for nanocrystalline strip |
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2023
- 2023-08-18 CN CN202311043548.XA patent/CN117025914A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117512322A (en) * | 2023-11-22 | 2024-02-06 | 青岛磁瑞通新材料有限公司 | Constant-tension continuous heat treatment device for nanocrystalline strip |
| CN117512322B (en) * | 2023-11-22 | 2024-04-05 | 青岛磁瑞通新材料有限公司 | Constant-tension continuous heat treatment device for nanocrystalline strip |
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