Continuous and efficient paint stripping method for enameled superconducting wire

Abstract

The invention belongs to the technical field of superconducting wire rod processing, and discloses a continuous and efficient paint stripping method for an enameled superconducting wire rod, which comprises the following steps of: loading the enameled superconducting wire rod into a pay-off device, and penetrating the enameled superconducting wire rod through a laser wire stripping machine to obtain the enameled superconducting wire rod with a thinned surface paint film or local damage; the enameled superconducting wire with the thinned or locally damaged surface paint film penetrates through an ultrasonic soaking pool, and the enameled superconducting wire with the swollen and bulged surface paint film separated from the internal bare wire is obtained; the enameled superconducting wire with the surface paint film swollen and bulged and separated from the internal bare wire sequentially penetrates through a spraying pool, an ultrasonic cleaning pool and an air dryer, and the bare wire with the clean surface is obtained; and the bare wires with the clean surfaces horizontally penetrate through the finishing mold, and the bare wires are densely arranged to a take-up wheel. The paint stripping efficiency of the enameled superconducting wire is higher, the whole wire is checked, the surface of the bare wire after paint stripping is smooth and free of damage, a paint film completely falls off, the surface condition of the bare wire after paint stripping is basically consistent with that of the bare wire before paint coating, and the requirement for reuse is met.

Description

Technical Field

[0001] The invention relates to the technical field of superconducting wire processing, in particular to a method for continuously and efficiently stripping enameled superconducting wire. Background Art

[0002] Enameled superconducting wire is an important component for winding low-cost nuclear magnetic resonance (MRI) magnets. As the demand for MRI market increases, the demand for enameled superconducting wire also increases accordingly, resulting in a large number of unqualified enameled superconducting wires due to painting problems, thereby increasing production costs and wasting a lot of resources. Therefore, it is very important to reuse these unqualified wires.

[0003] However, the painting process of superconducting wires has always been considered an irreversible process. On the one hand, the painting process mainly adopts a thin layer multi-coating method to make the paint layer and the superconducting wire tightly bonded together. It is difficult to peel off the paint film by physical methods. Even if the paint film on the surface is removed by scraping or laser sintering, it will damage the surface of the superconducting wire and make it unusable. On the other hand, the current method of stripping the paint of enameled superconducting wires is limited to a few meters at a time, and it is impossible to achieve continuous and stable stripping. Therefore, it is difficult to achieve complete stripping of enameled superconducting wires with a length of thousands or even tens of thousands of meters. Summary of the invention

[0004] The object of the present invention is to provide a method for continuously and efficiently stripping enameled superconducting wires to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A method for continuously and efficiently stripping paint from an enameled superconducting wire comprises the following steps: Step 1, loading the enameled superconducting wire into a wire pay-off device, and passing the enameled superconducting wire through a laser wire stripping machine, and continuously bombarding the surface of the enameled superconducting wire with a laser to obtain an enameled superconducting wire with a thinned surface paint film or partially damaged surface; Step 2, passing the enameled superconducting wire with a thinned or partially damaged surface paint film through an ultrasonic immersion tank, dissolving the organic adhesive between the surface paint film and the internal bare wire of the enameled superconducting wire by the solution in the ultrasonic immersion tank, and obtaining the enameled superconducting wire with a swollen surface paint film and separated from the internal bare wire; Step 3, passing the enameled superconducting wire with the swollen paint film on the surface separated from the inner bare wire through a spray pool to obtain a bare wire without a paint film on the surface; Step 4, passing the bare wire without paint film on the surface through an ultrasonic cleaning tank and an air dryer in sequence to obtain a bare wire with a clean surface; Step 5: Pass the clean bare wire horizontally through the trimming die and place the bare wire densely on the take-up wheel.

[0006] Further preferably, in step 1, the pay-off speed of the pay-off device is 10-30 m / min, and the thickness of the paint film of the enameled superconducting wire loaded into the pay-off device is 0.05 mm-0.20 mm.

[0007] Further preferably, in step 1, the laser power of the laser wire stripping machine is 2-5W, and the laser beam wavelength is 330-380nm, to ensure that when the surface of the enameled superconducting wire is continuously bombarded by the laser, the surface of the bare wire inside is not damaged.

[0008] Further preferably, in step 2, the ultrasonic immersion pool includes two stacked ultrasonic immersion pool bodies, steering guide wheels are symmetrically arranged at both ends of the ultrasonic immersion pool body, guide rollers are arranged on both sides of the ultrasonic immersion pool body close to the steering guide wheels, a plurality of positioning rollers are evenly arranged inside the ultrasonic immersion pool body, a heating resistor is arranged at the bottom of the ultrasonic immersion pool body, and a liquid level sensor is also arranged inside the ultrasonic immersion pool body.

[0009] Further preferably, the enameled superconducting wire with a thinned paint film or partially damaged surface passes through the turning guide wheel surface at the inlet end of the ultrasonic immersion tank body, the guide roller surface at the inlet end of the ultrasonic immersion tank body, the bottom of multiple evenly arranged positioning rollers, the guide roller surface at the outlet end of the ultrasonic immersion tank body and the turning guide wheel surface at the outlet end of the ultrasonic immersion tank body in sequence, and the enameled superconducting wire with a thinned paint film or partially damaged surface is circulated through the ultrasonic immersion tank body for a total of 3-9 times.

[0010] Further preferably, the solution inside the ultrasonic immersion tank body is 99% concentrated formic acid diluted with high-purity deionized water, the formic acid concentration in the diluted solution is 60%-70%, the solution temperature is 45°C±1°C, and the liquid level of the solution is 5±1cm higher than the enameled superconducting wire whose surface paint film is thinned or partially damaged.

[0011] Further preferably, in step 3, when the enameled superconducting wire with swollen and bulged surface paint film separated from the inner bare wire passes through the spray pool, the high-pressure water gun in the spray pool sprays the enameled superconducting wire with swollen and bulged surface paint film separated from the inner bare wire at an angle of 20-90° in the opposite direction of the traveling direction of the enameled superconducting wire with swollen and bulged surface paint film separated from the inner bare wire. Under the action of the high-pressure water gun, the swollen and bulged paint film on the surface of the enameled superconducting wire with swollen and bulged surface paint film separated from the inner bare wire is completely removed.

[0012] Further preferably, in step 5, the trimming mold is a polycrystalline mold, the roughness of the polycrystalline mold Ra is less than 0.2 μm, the die hole size of the sizing zone of the polycrystalline mold is 0.001-0.002 mm smaller than the bare wire size with a clean surface, the sizing zone length of the polycrystalline mold is 2-3 times that of an ordinary mold, and the sizing zone of the polycrystalline mold adopts a bidirectional chamfering design. It mainly plays the role of trimming the roundness and straightness of the bare wire, improving the surface quality of the bare wire, and making the bare wire reach the state before painting.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The laser power of the laser wire stripping machine is 2-5w, and the wavelength of the laser beam is 330-380nm, which ensures that when the laser continuously bombards the surface of the enameled superconducting wire, it will not cause damage to the internal bare wire surface.

[0014] The solution inside the ultrasonic immersion tank body is 99% concentrated formic acid diluted with high-purity deionized water. The formic acid concentration in the diluted solution is 60%-70%. This concentration of formic acid solution can effectively dissolve the organic adhesive between the enameled superconducting wire and the paint film whose surface paint film is thinned or partially damaged.

[0015] The solution temperature is 45℃±1℃, which can accelerate the dissolution of organic adhesives between the enameled superconducting wire with thinned or partially damaged surface paint film and the paint film on the one hand, and on the other hand, the enameled superconducting wire with thinned or partially damaged surface paint film can be separated from the paint film by vibration in combination with the ultrasonic immersion tank body.

[0016] Through the action of the guide roller and the positioning roller, in conjunction with the liquid level sensor, the liquid level of the solution can always be kept 5±1cm higher than the enameled superconducting wire with thinned surface paint film or partial damage, ensuring that the enameled superconducting wire with thinned surface paint film or partial damage can always be immersed in the solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The process flow chart of the continuous and efficient paint stripping method for the enameled superconducting wire of the present invention is as follows; Figure 2 This is a schematic diagram of the front structure of the ultrasonic immersion pool of the present invention; Figure 3 This is a schematic diagram of the top view of the ultrasonic immersion pool of the present invention; In the figure: 1. Steering guide wheel; 2. Ultrasonic immersion tank body; 3. Heating resistor; 4. Guide roller; 5. Positioning roller; 6. Liquid level sensor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-3 , the present invention provides a technical solution: A method for continuously and efficiently stripping paint from an enameled superconducting wire comprises the following steps: Step 1, loading the enameled superconducting wire into a wire pay-off device, and passing the enameled superconducting wire through a laser wire stripping machine, and continuously bombarding the surface of the enameled superconducting wire with a laser to obtain an enameled superconducting wire with a thinned surface paint film or partially damaged surface; Step 2, passing the enameled superconducting wire with a thinned or partially damaged surface paint film through an ultrasonic immersion tank, dissolving the organic adhesive between the surface paint film and the internal bare wire of the enameled superconducting wire by the solution in the ultrasonic immersion tank, and obtaining the enameled superconducting wire with a swollen surface paint film and separated from the internal bare wire; Step 3, passing the enameled superconducting wire with the swollen paint film on the surface separated from the inner bare wire through a spray pool to obtain a bare wire without a paint film on the surface; Step 4, passing the bare wire without paint film on the surface through an ultrasonic cleaning tank and an air dryer in sequence to obtain a bare wire with a clean surface; Step 5: Pass the clean bare wire horizontally through the trimming die and place the bare wire densely on the take-up wheel.

[0020] In the present invention, in step 1, the pay-off speed of the pay-off device is 10-30 m / min, and the thickness of the enameled superconducting wire loaded into the pay-off device is 0.05 mm-0.20 mm.

[0021] In the present invention, in step 1, the laser power of the laser wire stripping machine is 2-5W, and the laser beam wavelength is 330-380nm, ensuring that when the surface of the enameled superconducting wire is continuously bombarded by the laser, the surface of the internal bare wire is not damaged.

[0022] In the present invention, in step 2, the ultrasonic immersion pool includes two stacked ultrasonic immersion pool bodies 2, steering guide wheels 1 are symmetrically arranged at both ends of the ultrasonic immersion pool body 2, guide rollers 4 are arranged on both sides of the ultrasonic immersion pool body 2 close to the steering guide wheels 1, a plurality of positioning rollers 5 are evenly arranged inside the ultrasonic immersion pool body 2, a heating resistor 3 is arranged at the bottom of the ultrasonic immersion pool body 2, and a liquid level sensor 6 is also arranged inside the ultrasonic immersion pool body 2.

[0023] In the present invention, the enameled superconducting wire with a thinned surface paint film or partially damaged passes through the surface of the steering guide wheel 1 at the inlet end of the ultrasonic immersion tank body 2, the surface of the guide roller 4 at the inlet end of the ultrasonic immersion tank body 2, the bottom of multiple evenly arranged positioning rollers 5, the surface of the guide roller 4 at the outlet end of the ultrasonic immersion tank body 2 and the surface of the steering guide wheel 1 at the outlet end of the ultrasonic immersion tank body 2 in sequence, and the enameled superconducting wire with a thinned surface paint film or partially damaged passes through the ultrasonic immersion tank body 2 in a cycle for a total of 3-9 times.

[0024] In the present invention, the solution inside the ultrasonic immersion tank body 2 is 99% concentrated formic acid diluted with high-purity deionized water, the formic acid concentration in the diluted solution is 60%-70%, the solution temperature is 45°C±1°C, and the liquid level of the solution is 5±1cm higher than the enameled superconducting wire with thinned or partially damaged surface paint film.

[0025] In the present invention, in step 3, when the enameled superconducting wire with the swollen and bulged surface paint film separated from the internal bare wire passes through the spray pool, the high-pressure water gun in the spray pool sprays the enameled superconducting wire with the swollen and bulged surface paint film separated from the internal bare wire at an angle of 20-90 degrees in the opposite direction of the traveling direction of the enameled superconducting wire with the swollen and bulged surface paint film separated from the internal bare wire. Under the action of the high-pressure water gun, the swollen and bulged paint film on the surface of the enameled superconducting wire with the swollen and bulged surface paint film separated from the internal bare wire is completely removed.

[0026] In the present invention, in step 5, the finishing mold is a polycrystal mold, the roughness of the polycrystal mold Ra <0.2μm, the size of the die hole in the sizing area of ​​the polycrystal mold is 0.001-0.002mm smaller than the size of the bare wire with a clean surface, the length of the sizing area of ​​the polycrystal mold is 2-3 times that of the ordinary mold, and the sizing area of ​​the polycrystal mold adopts a bidirectional chamfering design. The polycrystal mold mainly plays the role of trimming the roundness and straightness of the bare wire, improving the surface quality of the bare wire, and making the bare wire reach the state before painting.

[0027] Example 1: This example provides an enameled superconducting wire with an insulation specification of Φ1.200 mm, a paint film thickness of 0.1 mm, and a length of 4500 m.

[0028] Step 1, load the enameled superconducting wire into the wire-paying device, the wire-paying speed of the wire-paying device is 15m / min, and pass the enameled superconducting wire through the laser wire stripping machine, and continuously bombard the surface of the enameled superconducting wire with laser to obtain the enameled superconducting wire with thinned surface paint film or partially damaged. The laser power of the laser wire stripping machine is 5w, and the laser beam wavelength is 340nm, which ensures that when the surface of the enameled superconducting wire is continuously bombarded by laser, the surface of the internal bare wire will not be damaged; Step 2, passing the enameled superconducting wire with a thinned surface paint film or partially damaged through the ultrasonic immersion tank, the enameled superconducting wire with a thinned surface paint film or partially damaged through the surface of the steering guide wheel 1 at the inlet end of the ultrasonic immersion tank body 2, the surface of the guide roller 4 at the inlet end of the ultrasonic immersion tank body 2, the bottom of a plurality of uniformly arranged positioning rollers 5, the surface of the guide roller 4 at the outlet end of the ultrasonic immersion tank body 2 and the surface of the steering guide wheel 1 at the outlet end of the ultrasonic immersion tank body 2, and the enameled superconducting wire with a thinned surface paint film or partially damaged circulates through the ultrasonic immersion tank body 2 for a total of 7 times, the solution inside the ultrasonic immersion tank body 2 is 99% concentrated formic acid diluted with high-purity deionized water, the formic acid concentration in the diluted solution is 65%, the solution temperature is 45°C, and the liquid level of the solution is 5±1cm higher than the enameled superconducting wire with thinned surface paint film or partially damaged surface paint film, the organic adhesive between the surface paint film of the enameled superconducting wire and the internal bare wire is dissolved by the solution inside the ultrasonic immersion tank, and the ultrasonic vibration function of the ultrasonic immersion tank body 2 itself is used to obtain the enameled superconducting wire with swollen surface paint film and separated internal bare wire; Step 3: Pass the enameled superconducting wire with the swollen paint film on the surface and separated from the inner bare wire through a spray pool, and the high-pressure water gun in the spray pool sprays the enameled superconducting wire with the swollen paint film on the surface and separated from the inner bare wire at an angle of 50° in the opposite direction of the traveling direction of the enameled superconducting wire with the swollen paint film on the surface and separated from the inner bare wire. Under the action of the high-pressure water gun, the swollen paint film on the surface of the enameled superconducting wire with the swollen paint film on the surface and separated from the inner bare wire is completely removed, and a bare wire without a paint film on the surface is obtained; Step 4: Pass the bare wire without paint film on the surface through the ultrasonic cleaning tank and the air dryer in sequence, further clean the bare wire without paint film on the surface through the ultrasonic cleaning tank, and remove water stains on the surface of the bare wire with the air dryer. After cleaning and air drying, no paint film remains on the surface of the bare wire, and a bare wire with a clean surface is obtained; Step 5. Pass the clean bare wire horizontally through the polycrystal mold. The roughness of the polycrystal mold is Ra<0.2μm. The die hole size of the sizing area of ​​the polycrystal mold is Φ1.098mm. The length of the sizing area of ​​the polycrystal mold is 2-3 times that of the ordinary mold. The surface of the bare wire passing through the exit area of ​​the polycrystal mold is smooth and metallic, with good roundness and straightness, and no bends. The bare wire is densely arranged on the take-up wheel.

[0029] Example 2: This example provides an enameled superconducting wire with insulation specifications of 1.440 mm×0.960 mm, a paint film thickness of 0.08 mm, and a length of 6000 m.

[0030] Step 1, load the enameled superconducting wire into the wire-paying device, the wire-paying speed of the wire-paying device is 15m / min, and pass the enameled superconducting wire through the laser wire stripping machine, and continuously bombard the surface of the enameled superconducting wire with laser to obtain the enameled superconducting wire with thinned surface paint film or partially damaged. The laser power of the laser wire stripping machine is 4w, and the laser beam wavelength is 350nm, so as to ensure that the surface of the internal bare wire will not be damaged when the laser continuously bombards the surface of the enameled superconducting wire; Step 2, passing the enameled superconducting wire with a thinned surface paint film or partially damaged through the ultrasonic immersion tank, the enameled superconducting wire with a thinned surface paint film or partially damaged through the surface of the steering guide wheel 1 at the inlet end of the ultrasonic immersion tank body 2, the surface of the guide roller 4 at the inlet end of the ultrasonic immersion tank body 2, the bottom of a plurality of uniformly arranged positioning rollers 5, the surface of the guide roller 4 at the outlet end of the ultrasonic immersion tank body 2 and the surface of the steering guide wheel 1 at the outlet end of the ultrasonic immersion tank body 2, and the enameled superconducting wire with a thinned surface paint film or partially damaged circulates through the ultrasonic immersion tank body 2 for a total of 7 times, the solution inside the ultrasonic immersion tank body 2 is 99% concentrated formic acid diluted with high-purity deionized water, the formic acid concentration in the diluted solution is 65%, the solution temperature is 45°C, and the liquid level of the solution is 5±1cm higher than the enameled superconducting wire with thinned surface paint film or partially damaged surface paint film, the organic adhesive between the surface paint film of the enameled superconducting wire and the internal bare wire is dissolved by the solution inside the ultrasonic immersion tank, and the ultrasonic vibration function of the ultrasonic immersion tank body 2 itself is used to obtain the enameled superconducting wire with swollen surface paint film and separated internal bare wire; Step 3: Pass the enameled superconducting wire with the swollen paint film on the surface and separated from the inner bare wire through a spray pool, and the high-pressure water gun in the spray pool sprays the enameled superconducting wire with the swollen paint film on the surface and separated from the inner bare wire at an angle of 50° in the opposite direction of the traveling direction of the enameled superconducting wire with the swollen paint film on the surface and separated from the inner bare wire. Under the action of the high-pressure water gun, the swollen paint film on the surface of the enameled superconducting wire with the swollen paint film on the surface and separated from the inner bare wire is completely removed, and a bare wire without a paint film on the surface is obtained; Step 4: Pass the bare wire without paint film on the surface through the ultrasonic cleaning tank and the air dryer in sequence, further clean the bare wire without paint film on the surface through the ultrasonic cleaning tank, and remove water stains on the surface of the bare wire with the air dryer. After cleaning and air drying, no paint film remains on the surface of the bare wire, and a bare wire with a clean surface is obtained; Step 5. Pass the clean bare wire horizontally through the polycrystal mold. The roughness of the polycrystal mold Ra is less than 0.2μm. The size of the die hole in the sizing area of ​​the polycrystal mold is 1.359mm×0.878mm. The length of the sizing area of ​​the polycrystal mold is 2-3 times that of the ordinary mold. The surface of the bare wire passing through the exit area of ​​the polycrystal mold is smooth and metallic, with good roundness and straightness, and no bends. The bare wire is densely arranged on the take-up wheel.

[0031] To sum up, in the specific implementation process, the paint stripping efficiency of enameled superconducting wire is higher. After checking the whole wire, the surface of the bare wire is smooth and undamaged after paint stripping, and the paint film falls off completely. The surface condition of the bare wire after paint stripping is basically the same as that before painting, which meets the requirements for reuse.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for continuous and efficient paint stripping of enameled superconducting wire, characterized in that: The following steps are involved: Step 1, loading the enameled superconducting wire into a wire pay-off device, and passing the enameled superconducting wire through a laser wire stripping machine, and continuously bombarding the surface of the enameled superconducting wire with a laser to obtain an enameled superconducting wire with a thinned surface paint film or partially damaged surface; Step 2, passing the enameled superconducting wire with a thinned or partially damaged surface paint film through an ultrasonic immersion tank, dissolving the organic adhesive between the surface paint film and the internal bare wire of the enameled superconducting wire by the solution in the ultrasonic immersion tank, and obtaining the enameled superconducting wire with a swollen surface paint film and separated from the internal bare wire; Step 3, passing the enameled superconducting wire with the swollen paint film on the surface separated from the inner bare wire through a spray pool to obtain a bare wire without a paint film on the surface; Step 4, passing the bare wire without paint film on the surface through an ultrasonic cleaning tank and an air dryer in sequence to obtain a bare wire with a clean surface; Step 5: Pass the clean bare wire horizontally through the trimming die and place the bare wire densely on the take-up wheel.

2. A method for continuous and efficient paint stripping of enameled superconducting wire according to claim 1, characterized in that: In step 1, the pay-off speed of the pay-off device is 10-30 m / min, and the thickness of the paint film of the enameled superconducting wire loaded into the pay-off device is 0.05 mm-0.20 mm.

3. A method for continuous and efficient paint stripping of enameled superconducting wire according to claim 1, characterized in that: In step 1, the laser power of the laser wire stripping machine is 2-5W, and the laser beam wavelength is 330-380nm, so as to ensure that the surface of the enameled superconducting wire is not damaged when the laser continuously bombards the surface of the enameled superconducting wire.

4. A method for continuous and efficient paint stripping of enameled superconducting wire according to claim 1, characterized in that: In step 2, the ultrasonic immersion pool comprises two ultrasonic immersion pool bodies (2) which are stacked, steering guide wheels (1) being symmetrically arranged at both ends of the ultrasonic immersion pool body (2), guide rollers (4) being arranged on both sides of the ultrasonic immersion pool body (2) close to the steering guide wheels (1), a plurality of positioning rollers (5) being evenly arranged inside the ultrasonic immersion pool body (2), a heating resistor (3) being arranged at the bottom of the ultrasonic immersion pool body (2), and a liquid level sensor (6) being also arranged inside the ultrasonic immersion pool body (2).

5. A method for continuous and efficient paint stripping of enameled superconducting wire according to claim 4, characterized in that: The enameled superconducting wire with a thinned or partially damaged surface paint film sequentially passes through the surface of the steering guide wheel (1) at the inlet end of the ultrasonic immersion tank body (2), the surface of the guide roller (4) at the inlet end of the ultrasonic immersion tank body (2), the bottom of a plurality of uniformly arranged positioning rollers (5), the surface of the guide roller (4) at the outlet end of the ultrasonic immersion tank body (2), and the surface of the steering guide wheel (1) at the outlet end of the ultrasonic immersion tank body (2), and the enameled superconducting wire with a thinned or partially damaged surface paint film is circulated through the ultrasonic immersion tank body (2) for a total of 3 to 9 times.

6. A method for continuous and efficient paint stripping of enameled superconducting wire according to claim 4, characterized in that: The solution inside the ultrasonic immersion tank body (2) is 99% concentrated formic acid diluted with high-purity deionized water, the formic acid concentration in the diluted solution is 60%-70%, the solution temperature is 45°C±1°C, and the liquid level of the solution is 5±1 cm higher than the enameled superconducting wire whose surface paint film is thinned or partially damaged.

7. A method for continuous and efficient paint stripping of enameled superconducting wire according to claim 1, characterized in that: In the step 3, when the enameled superconducting wire with swollen paint film on the surface and separated from the internal bare wire passes through the spray pool, the high-pressure water gun in the spray pool sprays the enameled superconducting wire with swollen paint film on the surface and separated from the internal bare wire at an angle of 20-90° in the opposite direction of the traveling direction of the enameled superconducting wire with swollen paint film on the surface and separated from the internal bare wire.

8. A method for continuous and efficient paint stripping of enameled superconducting wire according to claim 1, characterized in that: In step 5, the trimming mold is a polycrystal mold, the roughness of the polycrystal mold Ra is less than 0.2 μm, the mold hole size of the sizing zone of the polycrystal mold is 0.001-0.002 mm smaller than the size of the bare wire with a clean surface, the length of the sizing zone of the polycrystal mold is 2-3 times that of an ordinary mold, and the sizing zone of the polycrystal mold adopts a bidirectional chamfering design.

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