A coating method for nanocrystal strips

Abstract

The application discloses a kind of nanocrystalline strip coating methods, comprising the following steps: determine the number of guide, and install on guide installation site;The nanocrystalline strip to be coated is placed on the first second turntable assembly, and the outer end of the nanocrystalline strip to be coated is connected to the first end of the second rope;Second rope is wound on each guide in turn, and the second end of the second rope is passed through the second through hole;Start dryer and circulating coater;Start driving member to rotate second shaft, so that the second rope is wound in the second wire groove, and the outer end of the nanocrystalline strip to be coated is pulled, and the nanocrystalline strip to be coated passes through each guide in turn;When the nanocrystalline strip to be coated is completed coating, stop the dryer, circulating coater and driving member.Due to the coated nanocrystalline strip is aligned in the coating process Winding and fully coated, then no need to winding process again, then the next process can be directly carried out, reduce winding process, improve the processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of nanocrystalline ribbon processing technology, and more particularly to a coating method for nanocrystalline ribbons. Background Technology

[0002] Nanocrystalline magnetic cores are mostly installed between frequency converters and motors to filter high-frequency noise, protecting the frequency converter and motor bearings. They are widely used in electric vehicle powertrains and charging stations, enabling vehicles to pass EMC testing. Nanocrystalline elliptical magnetic cores for electric vehicles can be used on both DC and AC sides. Amorphous and nanocrystalline magnetic cores are novel magnetic materials widely applicable to electric vehicles, solar power generation, wind power generation, large-scale development power supplies, laser power supplies, and aircraft. Their main functions include transformers, common-mode noise suppressors, filter inductors, and current transformers. Amorphous and nanocrystalline materials are green, low-carbon, energy-saving, and highly efficient new materials. Compared to traditional ferrites, amorphous and nanocrystalline magnetic cores have more than 5 times higher permeability and 2 times higher saturation magnetic induction. The filtering effect is greatly improved, and the overcurrent capacity is also significantly enhanced. They can withstand harsh environments with high temperatures.

[0003] Most nanocrystalline magnetic cores are designed and formed into a ring structure. The through holes inside the ring structure are used to pass through wires and other structures. Nanocrystalline magnetic cores are formed by winding and hardening strips. After coating, the nanocrystalline magnetic core strips have an insulating effect, which reduces eddy current losses.

[0004] In existing technologies, the nanocrystalline magnetic core material, namely nanocrystalline ribbon, requires a winding process after coating and drying to achieve a coating process. This winding process not only removes the uncoated nanocrystalline ribbon but also aligns and winds it. Therefore, the process of preparing nanocrystalline magnetic cores from nanocrystalline ribbon involves many steps and has low processing efficiency.

[0005] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a coating method for nanocrystalline ribbons, which addresses the above-mentioned deficiencies of the prior art and aims to solve the problem that the process of preparing nanocrystalline magnetic cores from nanocrystalline ribbons involves many steps and has low processing efficiency.

[0007] The technical solution adopted by this invention to solve the technical problem is as follows:

[0008] A method for coating nanoribbons, wherein a coating apparatus is used on the nanoribbons, the coating apparatus comprising:

[0009] The bracket forms two rows of guide mounting positions, with several guide mounting positions in each row;

[0010] The first turntable assembly is rotatably connected to the bracket and is used to place the nanocrystalline ribbon to be coated.

[0011] The second turntable assembly is rotatably connected to the bracket and is used to place the coated nanocrystalline ribbon. Two rows of guide mounting positions are located between the first turntable assembly and the second turntable.

[0012] A driving component is disposed on the bracket and connected to the second turntable assembly, and is used to drive the second turntable assembly to rotate;

[0013] A circulating coating unit is mounted on the support and positioned close to the first turntable assembly;

[0014] A dryer is disposed on the support and located between the circulating coating unit and the second turntable assembly;

[0015] Several guides are installed in two rows of guide mounting positions, forming a serrated arrangement; the number of guide mounting positions is greater than the number of guides.

[0016] The second turntable assembly includes:

[0017] The second rotating shaft is provided with the first slot;

[0018] The second turntable is connected to the second rotating shaft. The second turntable is equipped with a magnetic attraction element to magnetically attract the coated nanocrystalline ribbon onto the second turntable.

[0019] The second support frame is located on the second turntable and sleeved on the outside of the second rotating shaft. The outer side of the second support frame is provided with a second groove, the second groove is provided with a second through hole, and the inner side of the second support frame is provided with a second slot.

[0020] The second card is located inside the second support frame. The second card is provided with a first card protrusion and a second card protrusion. The first card protrusion is engaged in the first card slot, and the second card protrusion is engaged in the second card slot.

[0021] The coating method includes the following steps:

[0022] Determine the number of guides and install them in the guide mounting positions;

[0023] The nanocrystalline ribbon to be coated is placed on the first and second turntable assemblies, and the outer end of the nanocrystalline ribbon to be coated is connected to the first end of the second rope; the second rope is wound around each of the guides in sequence, and the second end of the second rope is passed through the second through hole and fixed by the second clip;

[0024] Start the dryer and the circulating coating machine;

[0025] The drive unit is activated to rotate the second shaft, so that the second rope is wound in the second groove, and the outer end of the nanocrystalline ribbon to be coated is pulled, and the nanocrystalline ribbon to be coated passes through each of the guides in sequence, is coated by the circulating coating machine and dried by the dryer, and then wound onto the second support frame.

[0026] When the nanocrystalline ribbon to be coated is coated, the dryer, the circulating coating machine, and the drive unit are stopped.

[0027] The method for coating nanoribbons, wherein determining the number of the guides includes:

[0028] The drying time of the coating solution is determined based on the viscosity of the coating solution in the circulating coating machine and the temperature of the dryer.

[0029] Determine the travel speed of the nanocrystals to be coated;

[0030] The drying path of the nanocrystalline ribbon to be coated is determined based on the speed and the drying time.

[0031] The number of guides is determined based on the drying path.

[0032] The coating method for nanocrystalline ribbons, wherein the coating solution comprises: a suspension and / or an organic solution;

[0033] The suspension comprises: electrically insulating powder and a dispersant;

[0034] The organic solution includes: silanol salt, additives, and solvent.

[0035] The method for coating nanoribbons, wherein the electrically insulating powder comprises at least one of the following: boron trioxide powder, boron-free powder, magnesium oxide powder, silicon dioxide powder, barium sulfate powder, calcium carbonate powder, and boron nitride powder.

[0036] The dispersant includes at least one of deionized water, methanol, ethanol, and acetone.

[0037] The solvent includes at least one of methanol and ethanol;

[0038] The additives include at least one of deionized water, sulfuric acid, hydrochloric acid, and nitric acid.

[0039] The coating method for the nanocrystalline ribbon, wherein, before determining the number of the guides, the coating method further includes:

[0040] Measure the curl of the nanoribbon and select a nanoribbon with a curl within a preset curl range;

[0041] The thickness of the nanocrystalline ribbon is measured, and when the variance of the thickness is less than a preset variance, the nanocrystalline ribbon is used as the nanocrystalline ribbon to be coated.

[0042] The coating method for the nanocrystalline ribbon, wherein the magnetic suction element is detachably disposed on the bottom surface of the second turntable;

[0043] The first turntable assembly includes:

[0044] The first rotating shaft is equipped with a third slot;

[0045] The first turntable is connected to the first rotating shaft;

[0046] The first support frame is located on the first turntable and sleeved on the outside of the first rotating shaft. The outer side of the first support frame is provided with a first groove, the first groove is provided with a first through hole, and the inner side of the first support frame is provided with a fourth slot.

[0047] The first card is located inside the first support frame. The first card is provided with a third card protrusion and a fourth card protrusion. The third card protrusion is engaged in the third card slot, and the fourth card protrusion is engaged in the fourth card slot.

[0048] The inner end of the nanocrystalline ribbon to be coated is connected to the first end of the first rope, the first rope is wound in the first groove, the second end of the first rope passes through the first through hole, and the second end of the first rope is fixed by the first clip.

[0049] The method for coating nanocrystalline ribbons, wherein when the coating of the nanocrystalline ribbon to be coated is completed, the dryer, the circulating coating machine, and the driving component are stopped, including:

[0050] When the inner end of the nanocrystalline ribbon to be coated is coated and dried and wound onto the second support frame, the drive unit is stopped, and the dryer and the circulating coating unit are also stopped.

[0051] Remove the first cord and take off the magnetic component;

[0052] After removing the second card, remove the second support frame and the coated nanocrystalline ribbon wound around the second support frame.

[0053] The method for coating nanoribbons, wherein the coating method further includes:

[0054] The coated nanocrystalline ribbon is annealed to decompose the rope.

[0055] In the nanocrystalline ribbon coating method, the annealing temperature is 400℃~600℃;

[0056] After annealing, the thickness of the coated nanocrystalline ribbon is on the micrometer scale.

[0057] A coating apparatus for nanocrystalline ribbons, comprising:

[0058] The bracket forms two rows of guide mounting positions, with several guide mounting positions in each row;

[0059] The first turntable assembly is rotatably connected to the bracket and is used to place the nanocrystalline ribbon to be coated.

[0060] The second turntable assembly is rotatably connected to the bracket and is used to place the coated nanocrystalline ribbon. Two rows of guide mounting positions are located between the first turntable assembly and the second turntable.

[0061] A driving component is disposed on the bracket and connected to the second turntable assembly, and is used to drive the second turntable assembly to rotate;

[0062] A circulating coating unit is mounted on the support and positioned close to the first turntable assembly;

[0063] A dryer is disposed on the support and located between the circulating coating unit and the second turntable assembly;

[0064] Several guides are installed in two rows of guide mounting positions, forming a serrated arrangement; the number of guide mounting positions is greater than the number of guides.

[0065] The second turntable assembly includes:

[0066] The second rotating shaft is provided with the first slot;

[0067] The second turntable is connected to the second rotating shaft. The second turntable is equipped with a magnetic attraction element to magnetically attract the coated nanocrystalline ribbon onto the second turntable.

[0068] The second support frame is located on the second turntable and sleeved on the outside of the second rotating shaft. The outer side of the second support frame is provided with a second groove, the second groove is provided with a second through hole, and the inner side of the second support frame is provided with a second slot.

[0069] The second card is located inside the second support frame. The second card has a first card protrusion and a second card protrusion. The first card protrusion is engaged in the first card slot, and the second card protrusion is engaged in the second card slot.

[0070] Beneficial effects: Since the coated nanocrystalline ribbons are aligned and fully coated during the coating process, there is no need to perform a winding process again, and the next process can be carried out directly, reducing the number of winding steps and improving the processing efficiency. Attached Figure Description

[0071] Figure 1 This is a perspective view of the nanocrystalline ribbon coating device in this invention.

[0072] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0073] Figure 3 This is a top view of the nanocrystalline ribbon coating device in this invention.

[0074] Figure 4 This is a schematic diagram of the structure of the second card in this invention.

[0075] Figure 5 This is a schematic diagram of the structure of the second support frame in this invention.

[0076] Figure 6 This is a schematic diagram showing the state of removing the second card in this invention.

[0077] Figure 7 This is a schematic diagram of the structure of the second support frame and the coated nanocrystalline ribbon in this invention.

[0078] Figure 8 This is a schematic diagram of the structure of the second turntable and the magnetic suction component in this invention.

[0079] Explanation of reference numerals in the attached figures:

[0080] 10. Support; 20. First turntable assembly; 21. Nanocrystalline ribbon to be coated; 30. Second turntable assembly; 31. Coated nanocrystalline ribbon; 32. Second rotating shaft; 321. First slot; 33. Second turntable; 34. Magnetic suction element; 35. Second support frame; 351. Second groove; 352. Second through hole; 353. Second slot; 36. Second clip; 361. First clip protrusion; 362. Second clip protrusion; 37. Handle; 40. Drive element; 50. Circulating coating device; 60. Dryer; 70. Guide; 80. Second rope. Detailed Implementation

[0081] To make the objectives, technical solutions, and advantages of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0082] Please also refer to Figures 1-8This invention provides some embodiments of a coating method for nanocrystalline ribbons.

[0083] In existing technologies, such as CN110026313A, after the nanocrystalline magnetic core strip is coated, it is collected on a receiving device. However, the nanocrystalline magnetic core strip on the receiving device is not collected neatly, and there are uncoated areas. Instead of direct annealing, the nanocrystalline magnetic core strip needs to be rewound, and the uncoated areas need to be removed—that is, a winding process is required. This results in numerous steps and low efficiency.

[0084] like Figure 1 , Figure 3 and Figure 6 As shown, the nanocrystalline ribbon coating method of the present invention is applied to a nanocrystalline ribbon coating apparatus, which includes:

[0085] The bracket 10 forms two rows of guide 70 mounting positions, with several guide 70 mounting positions in each row;

[0086] The first turntable assembly 20 is rotatably connected to the bracket 10 and is used to place the nanocrystalline ribbon 21 to be coated.

[0087] The second turntable 33 assembly 30 is rotatably connected to the bracket 10 and is used to place the coated nanocrystalline ribbon 31. The two rows of guides 70 are located between the first turntable assembly 20 and the second turntable 33.

[0088] A drive component 40 is disposed on the bracket 10 and connected to the second turntable 33 assembly 30, and is used to drive the second turntable 33 assembly 30 to rotate;

[0089] A circulating coating unit 50 is disposed on the support 10 and located near the first turntable assembly 20;

[0090] A dryer 60 is disposed on the support 10 and located between the circulating coating device 50 and the second turntable 33 assembly 30;

[0091] A plurality of guides 70 are installed in two rows of guide 70 mounting positions and arranged in a serrated pattern; the number of guide 70 mounting positions is greater than the number of guides 70.

[0092] The second turntable 33 component 30 includes:

[0093] The second rotating shaft 32 is provided with a first slot 321;

[0094] The second turntable 33 is connected to the second rotating shaft 32. The second turntable 33 is provided with a magnetic suction element 34 to magnetically attract the coated nanocrystalline ribbon 31 onto the second turntable 33.

[0095] The second support frame 35 is located on the second turntable 33 and sleeved on the second rotating shaft 32. The outer side of the second support frame 35 is provided with a second groove 351, the second groove 351 is provided with a second through hole 352, and the inner side of the second support frame 35 is provided with a second slot 353.

[0096] The second card 36 is located inside the second support frame 35. The second card 36 is provided with a first card protrusion 361 and a second card protrusion 362. The first card protrusion 361 is engaged in the first card slot 321, and the second card protrusion 362 is engaged in the second card slot 353.

[0097] Specifically, the second through hole 352 allows the second rope 80 connected to the nanocrystalline ribbon 21 to be coated to pass through, and the second rope 80 can be fixed by the second clip 36. Specifically, it can be wound around the second rotating shaft 32 and pressed onto the second turntable 33 by the second clip 36. Thus, when the second rotating shaft 32 and the second turntable 33 are driven to rotate by the drive member 40, the second rope 80 is pulled to wind around the second wire groove 351. Since the second rope 80 is wound first at the beginning, it is sufficient for the nanocrystalline ribbon 21 to be coated to be coated. That is to say, the nanocrystalline ribbon 21 to be coated is coated before being wound onto the second support frame 35, and the inner end of the coated nanocrystalline ribbon 31 has been coated.

[0098] In addition, since the second turntable 33 is equipped with a magnetic suction member 34, the coated nanocrystalline ribbon 31 is magnetically attracted by the magnetic suction member 34. When the coated nanocrystalline ribbon 31 is wound around the second support frame 35, the side of the coated nanocrystalline ribbon 31 will abut against the second turntable 33, so that the coated nanocrystalline ribbon 31 is aligned and wound, and the side of the coated nanocrystalline ribbon 31 is flush.

[0099] Since the coated nanocrystalline ribbon 31 is aligned, wound, and fully coated during the coating process, there is no need to perform a winding process again, and the next process can be carried out directly, reducing the winding process and improving the processing efficiency.

[0100] In a preferred implementation of this invention, such as Figure 1 and Figure 8 As shown, the magnetic suction element 34 is detachably mounted on the bottom surface of the second turntable 33.

[0101] Specifically, the magnetic chuck 34 can be a permanent magnet or an electromagnet. When a permanent magnet is used, the magnetic chuck 34 can be detached from the second turntable 33, preventing the coated nanocrystalline ribbon 31 from being magnetically attracted to the second turntable 33, thus facilitating the removal of the coated nanocrystalline ribbon 31. When an electromagnet is used, power can be turned off to prevent the coated nanocrystalline ribbon 31 from being magnetically attracted to the second turntable 33.

[0102] There are multiple magnetic components 34. In order to facilitate disassembly, the magnetic components 34 can be long and symmetrically distributed. Then, the magnetic components 34 can be contacted from the edge of the second turntable 33 and removed.

[0103] In a preferred embodiment of the present invention, the first turntable assembly 20 includes:

[0104] The first rotating shaft is equipped with a third slot;

[0105] The first turntable is connected to the first rotating shaft;

[0106] The first support frame is located on the first turntable and sleeved on the outside of the first rotating shaft. The outer side of the first support frame is provided with a first groove, the first groove is provided with a first through hole, and the inner side of the first support frame is provided with a fourth slot.

[0107] The first card is located inside the first support frame. The first card is provided with a third card protrusion and a fourth card protrusion. The third card protrusion is engaged in the third card slot, and the fourth card protrusion is engaged in the fourth card slot.

[0108] The inner end of the nanocrystalline ribbon 21 to be coated is connected to the first end of the first rope, the first rope is wound in the first groove, the second end of the first rope passes through the first through hole, and the second end of the first rope is fixed by the first clip.

[0109] Specifically, the inner end of the coated nanocrystalline ribbon 31 (i.e., the outer end of the nanocrystalline ribbon 21 to be coated) can be fully coated. To facilitate the full coating of the outer end of the coated nanocrystalline ribbon 31 (i.e., the inner end of the nanocrystalline ribbon 21 to be coated), the first turntable assembly 20 can also adopt a similar structure to the second turntable assembly 30. Of course, the magnetic suction element 34 does not need to be set on the first turntable. After the inner end of the nanocrystalline ribbon 21 to be coated is separated from the first rotating shaft, the first rope wrapped in the first wire groove moves along with the nanocrystalline ribbon 21 to be coated on the guide 70, so that the inner end of the nanocrystalline ribbon 21 to be coated can be fully coated and dried.

[0110] In a preferred embodiment of the present invention, there are multiple first grooves and multiple first through holes.

[0111] Specifically, multiple first grooves and multiple first ropes can be provided. Multiple first through holes can also be provided, and each first rope can float and pass through multiple first through holes.

[0112] In a preferred implementation of this invention, such as Figure 2 and Figure 5 As shown, there are multiple second grooves 351 and multiple second through holes 352.

[0113] Specifically, multiple second grooves 351 can be provided, and multiple second ropes 80 can also be provided. Multiple second through holes 352 can also be provided, and each second rope 80 can float and pass through multiple second through holes 352.

[0114] In a preferred implementation of this invention, such as Figure 2 , Figure 4 as well as Figure 6 As shown, the second card component 36 is also provided with a handle 37. The first card component is also provided with a handle.

[0115] Specifically, in order to facilitate the removal of the first card and the second card 36, handles can be provided on the first card and the second card 36.

[0116] In a preferred implementation of this invention, such as Figure 2 and Figure 6 As shown, the height of the second rotating shaft 32 is greater than the height of the second turntable 33.

[0117] Specifically, since the first protrusion 361 on the second clip 36 needs to be inserted into the first slot 321 of the second rotating shaft 32, and the second protrusion 362 on the second clip 36 needs to be inserted into the second slot 353 of the second support frame 35, in order to facilitate insertion, the second rotating shaft 32 is higher and the second turntable 33 is lower. When the second clip 36 is inserted, the first protrusion 361 first inserts into the first slot 321, and then when it is lowered to the second support frame 35, the second protrusion 362 inserts into the second slot 353. In other words, it is inserted in two steps, which can be aligned step by step instead of simultaneously, thus reducing the difficulty of insertion.

[0118] In a preferred implementation of this invention, such as Figure 2 , Figure 4 , Figure 6 as well as Figure 7 As shown, there are multiple first card slots 321 and multiple second card slots 353.

[0119] Specifically, the number of first card slots 321 can be set to multiple, and the number of first card protrusions 361 can also be set according to the number of first card slots 321. The number of second card slots 353 can be set to multiple, and the number of second card protrusions 362 can also be set according to the number of second card slots 353.

[0120] Based on the nanocrystalline ribbon coating apparatus described in any of the above embodiments, the present invention also provides a preferred embodiment of the method:

[0121] like Figure 1 As shown, the nanocrystalline ribbon coating method of this invention includes the following steps:

[0122] Step S100: Determine the number of guides and install them in the guide mounting positions.

[0123] Step S200: Place the nanocrystalline ribbon to be coated on the first and second turntable assemblies, and connect the outer end of the nanocrystalline ribbon to be coated to the first end of the second rope; wind the second rope around each of the guides in sequence, pass the second end of the second rope through the second through hole, and fix the second end of the second rope with the second clip.

[0124] Step S300: Start the dryer and the circulating coating machine.

[0125] Step S400: Start the drive unit to rotate the second shaft so that the second rope is wound in the second groove, and pull the outer end of the nanocrystalline ribbon to be coated, and make the nanocrystalline ribbon to be coated pass through each of the guides in sequence, and be coated by the circulating coating machine and dried by the dryer before being wound on the second support frame.

[0126] Step S500: When the nanocrystalline ribbon to be coated is completed, stop the dryer, the circulating coating machine, and the drive unit.

[0127] Step S600: Anneal the coated nanocrystalline ribbon to decompose the rope.

[0128] Specifically, this application combines the coating process and the winding process. Once the coating process is carried out using the method of this application, since the winding process will not be performed, it is impossible to check whether the coating is sufficient and to make corrections during the winding process. Therefore, this application needs to ensure sufficient coating.

[0129] This application configures the number of guides according to specific circumstances. The more guides there are, the longer the nanocrystalline ribbon travels on the dryer, and the more thoroughly it is dried. During the coating process, the second rope is first wound around the second groove of the second support frame. Then, the outer end of the nanocrystalline ribbon to be coated can be drawn by the second rope and sequentially pass through the circulating coating machine to be coated with coating solution. After passing through the dryer to form a film layer, it is wound around the second support frame as the inner end of the coated nanocrystalline ribbon.

[0130] After coating is completed, the coated nanocrystalline ribbon can be removed and annealed. During annealing, the low molecular weight substances and some solvents in the film will decompose or volatilize. Of course, the second strand will also decompose or dehydrogenate, thus removing the second strand. Even if some residue remains, the second strand becomes very brittle after annealing and can be easily crushed and removed from the second through-hole.

[0131] Specifically, the annealing temperature is 400℃~600℃. The annealing temperature can be adjusted as needed. After annealing, the thickness of the coated nanocrystalline ribbon is on the micrometer scale. The thickness of the film can be set as needed, but it should not be too thick or too thin.

[0132] The coating method further includes:

[0133] Step S11: Measure the curl of the nanoribbon and select a nanoribbon with a curl within the preset curl range.

[0134] Step S12: Measure the thickness of the nanocrystalline ribbon. When the variance of the thickness is less than the preset variance, the nanocrystalline ribbon is used as the nanocrystalline ribbon to be coated.

[0135] Specifically, to ensure the quality of the nanocrystal coating, the nanocrystal ribbons need to be screened, and only those that meet the requirements are selected for coating. The nanocrystal ribbons should have a certain degree of curl and uniform thickness, resulting in a more uniform coating and higher coating quality.

[0136] Step S100 specifically includes:

[0137] Step S110: Determine the drying time of the coating solution based on the viscosity of the coating solution in the circulating coating machine and the temperature of the dryer.

[0138] Step S120: Determine the travel speed of the nanocrystal ribbon to be coated.

[0139] Step S130: The drying path of the nanocrystalline ribbon to be coated, based on the speed and the drying time.

[0140] Step S140: Determine the number of guides based on the drying path.

[0141] Specifically, the coating solution needs a certain amount of time to dry fully. The drying time is mainly related to the viscosity of the coating solution and the temperature of the dryer. The higher the viscosity and the higher the temperature of the dryer, the easier it is to dry and the shorter the drying time. The lower the viscosity and the lower the temperature of the dryer, the more difficult it is to dry and the longer the drying time.

[0142] To ensure the second cord won't break due to excessive rotation speed and that the coated nanocrystalline ribbon has sufficient time to be magnetically attracted to the second turntable, the travel speed of the nanocrystalline ribbon to be coated can be as high as possible. Increasing the travel speed of the nanocrystalline ribbon can improve processing efficiency. The travel speed of the nanocrystalline ribbon to be coated can also be determined empirically. At this travel speed, a high-strength second cord should be selected to ensure it won't break, and a strong magnetic attractor should be used to ensure the coated nanocrystalline ribbon is attracted to the second turntable.

[0143] After determining the rotation speed and drying time, the drying distance can be determined. Drying distance = speed * drying time. Here, the speed remains stable. As the coated nanocrystalline ribbon is wound, the rotation speed of the second shaft needs to be adaptively adjusted to ensure a stable travel speed of the nanocrystalline ribbon to be coated. For example, at the beginning of winding, the rotation speed of the second shaft is higher, and as the coated nanocrystalline ribbon is wound, the rotation speed of the second shaft gradually decreases.

[0144] Because the dryer has a limited length while the drying path is relatively long, two rows of guides are needed. This allows the nanocrystalline ribbon to be coated to alternately wind and travel between the two rows of guides, ensuring a sufficiently long drying path. Therefore, once the drying path is determined, the number of guides can be determined.

[0145] The coating solution includes: a suspension and / or an organic solution;

[0146] The suspension comprises: electrically insulating powder and a dispersant;

[0147] The organic solution includes: silanol salt, additives, and solvent.

[0148] Specifically, the film layer serves an insulating function and can be formed using electrically insulating powder and / or silanodes as the main raw materials. The dispersant's role is to disperse the electrically insulating powder, forming a more uniform film layer. The additives' role is to assist in the hydrolysis and polymerization of silanodes, and the solvent's role is to dissolve the silanodes.

[0149] The electrically insulating powder includes at least one of the following: boron trioxide powder, boron-free powder, magnesium oxide powder, silicon dioxide powder, barium sulfate powder, calcium carbonate powder, and boron nitride powder.

[0150] The dispersant includes at least one of deionized water, methanol, ethanol, and acetone.

[0151] The solvent includes at least one of methanol and ethanol;

[0152] The additives include at least one of deionized water, sulfuric acid, hydrochloric acid, and nitric acid.

[0153] Specifically, the content of each component is selected to prepare the coating solution according to the needs. Of course, coating solutions with other components can also be used.

[0154] Step S500 specifically includes:

[0155] Step S510: When the inner end of the nanocrystalline ribbon to be coated is coated and dried and wound onto the second support frame, stop the drive unit, and stop the dryer and the circulating coating machine.

[0156] Step S520: Remove the first cord and take off the magnetic component.

[0157] Step S530: After removing the second card, remove the second support frame and the coated nanocrystalline ribbon wound around the second support frame.

[0158] The coating process can be completed when the entire nanocrystalline ribbon to be coated has been coated by the circulating coating machine and dried by the dryer, and then wound onto the second support frame. Therefore, the drive unit, dryer, and circulating coating machine can be stopped, the first cord removed, and the magnetic attachment taken off. Then, the second clip can be removed, allowing the second support frame along with the coated nanocrystalline ribbon to be removed. After the second support frame and the coated nanocrystalline ribbon are removed, the entire assembly can be placed in an annealing platform for annealing.

[0159] It should be understood that the application of the present invention is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A method for coating nanocrystalline ribbons, characterized in that, A coating apparatus for nanocrystalline ribbons, the coating apparatus for nanocrystalline ribbons comprising: The bracket forms two rows of guide mounting positions, with several guide mounting positions in each row; The first turntable assembly is rotatably connected to the bracket and is used to place the nanocrystalline ribbon to be coated. The second turntable assembly is rotatably connected to the bracket and is used to place the coated nanocrystalline ribbon. Two rows of guide mounting positions are located between the first turntable assembly and the second turntable. A driving component is disposed on the bracket and connected to the second turntable assembly, and is used to drive the second turntable assembly to rotate; A circulating coating unit is mounted on the support and positioned close to the first turntable assembly; A dryer is disposed on the support and located between the circulating coating unit and the second turntable assembly; Several guides are installed in two rows of guide mounting positions, forming a serrated arrangement; the number of guide mounting positions is greater than the number of guides. The second turntable assembly includes: The second rotating shaft is provided with the first slot; The second turntable is connected to the second rotating shaft. The second turntable is equipped with a magnetic attraction element to magnetically attract the coated nanocrystalline ribbon onto the second turntable. The second support frame is located on the second turntable and sleeved on the outside of the second rotating shaft. The outer side of the second support frame is provided with a second groove, the second groove is provided with a second through hole, and the inner side of the second support frame is provided with a second slot. The second card is located inside the second support frame. The second card is provided with a first card protrusion and a second card protrusion. The first card protrusion is engaged in the first card slot, and the second card protrusion is engaged in the second card slot. The coating method includes the following steps: Determine the number of guides and install them in the guide mounting positions; The nanocrystalline ribbon to be coated is placed on the first and second turntable assemblies, and the outer end of the nanocrystalline ribbon to be coated is connected to the first end of the second rope; the second rope is wound around each of the guides in sequence, and the second end of the second rope is passed through the second through hole and fixed by the second clip; Start the dryer and the circulating coating machine; The drive unit is activated to rotate the second shaft, so that the second rope is wound in the second groove, and the outer end of the nanocrystalline ribbon to be coated is pulled, and the nanocrystalline ribbon to be coated passes through each of the guides in sequence, is coated by the circulating coating machine and dried by the dryer, and then wound onto the second support frame. When the nanocrystalline ribbon to be coated is coated, the dryer, the circulating coating machine, and the drive unit are stopped.

2. The coating method for nanocrystalline ribbons according to claim 1, characterized in that, Determining the number of the guides includes: The drying time of the coating solution is determined based on the viscosity of the coating solution in the circulating coating machine and the temperature of the dryer. Determine the travel speed of the nanocrystals to be coated; The drying path of the nanocrystalline ribbon to be coated is determined based on the speed and the drying time. The number of guides is determined based on the drying path.

3. The coating method for nanocrystalline ribbons according to claim 2, characterized in that, The coating solution includes: a suspension and / or an organic solution; The suspension comprises: electrically insulating powder and a dispersant; The organic solution includes: silanol salt, additives, and solvent.

4. The coating method for nanocrystalline ribbons according to claim 3, characterized in that, The electrically insulating powder includes at least one of the following: boron trioxide powder, boron-free powder, magnesium oxide powder, silicon dioxide powder, barium sulfate powder, calcium carbonate powder, and boron nitride powder. The dispersant includes at least one of deionized water, methanol, ethanol, and acetone. The solvent includes at least one of methanol and ethanol; The additives include at least one of deionized water, sulfuric acid, hydrochloric acid, and nitric acid.

5. The coating method for nanocrystalline ribbons according to claim 1, characterized in that, Before determining the number of the guides, the coating method further includes: Measure the curl of the nanoribbon and select a nanoribbon with a curl within a preset curl range; The thickness of the nanocrystalline ribbon is measured, and when the variance of the thickness is less than a preset variance, the nanocrystalline ribbon is used as the nanocrystalline ribbon to be coated.

6. The coating method for nanocrystalline ribbons according to claim 1, characterized in that, The magnetic suction component is detachably mounted on the bottom surface of the second turntable; The first turntable assembly includes: The first rotating shaft is equipped with a third slot; The first turntable is connected to the first rotating shaft; The first support frame is located on the first turntable and sleeved on the outside of the first rotating shaft. The outer side of the first support frame is provided with a first groove, the first groove is provided with a first through hole, and the inner side of the first support frame is provided with a fourth slot. The first card is located inside the first support frame. The first card is provided with a third card protrusion and a fourth card protrusion. The third card protrusion is engaged in the third card slot, and the fourth card protrusion is engaged in the fourth card slot. The inner end of the nanocrystalline ribbon to be coated is connected to the first end of the first rope, the first rope is wound in the first groove, the second end of the first rope passes through the first through hole, and the second end of the first rope is fixed by the first clip.

7. The coating method for nanocrystalline ribbons according to claim 6, characterized in that, When the nanocrystalline ribbon to be coated is completed, the dryer, the circulating coating machine, and the drive unit are stopped, including: When the inner end of the nanocrystalline ribbon to be coated is coated and dried and wound onto the second support frame, the drive unit is stopped, and the dryer and the circulating coating unit are also stopped. Remove the first cord and take off the magnetic component; After removing the second card, remove the second support frame and the coated nanocrystalline ribbon wound around the second support frame.

8. The coating method for nanocrystalline ribbons according to claim 1, characterized in that, The coating method further includes: The coated nanocrystalline ribbon is annealed to decompose the rope.

9. The coating method for nanocrystalline ribbons according to claim 8, characterized in that, The annealing temperature is 400℃~600℃; After annealing, the thickness of the coated nanocrystalline ribbon is on the micrometer scale.

10. A coating apparatus for nanocrystalline ribbons, characterized in that, include: The bracket forms two rows of guide mounting positions, with several guide mounting positions in each row; The first turntable assembly is rotatably connected to the bracket and is used to place the nanocrystalline ribbon to be coated. The second turntable assembly is rotatably connected to the bracket and is used to place the coated nanocrystalline ribbon. Two rows of guide mounting positions are located between the first turntable assembly and the second turntable. A driving component is disposed on the bracket and connected to the second turntable assembly, and is used to drive the second turntable assembly to rotate; A circulating coating unit is mounted on the support and positioned close to the first turntable assembly; A dryer is disposed on the support and located between the circulating coating unit and the second turntable assembly; Several guides are installed in two rows of guide mounting positions, forming a serrated arrangement; The number of guide mounting positions is greater than the number of guides; The second turntable assembly includes: The second rotating shaft is provided with the first slot; The second turntable is connected to the second rotating shaft. The second turntable is equipped with a magnetic attraction element to magnetically attract the coated nanocrystalline ribbon onto the second turntable. The second support frame is located on the second turntable and sleeved on the outside of the second rotating shaft. The outer side of the second support frame is provided with a second groove, the second groove is provided with a second through hole, and the inner side of the second support frame is provided with a second slot. The second card is located inside the second support frame. The second card has a first card protrusion and a second card protrusion. The first card protrusion is engaged in the first card slot, and the second card protrusion is engaged in the second card slot.

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