Superconducting magnet processing method

Abstract

The invention discloses a superconducting magnet processing method, and belongs to the technical field of fusion reactors. The superconducting magnet processing method comprises the following steps: mounting a superconducting coil in a coil box to form a main body piece, wherein the coil box is provided with a flash hole; placing the main body piece in a vacuum environment; filling materials are injected into the main body part in the vacuum environment, and ultrasonic vibration is applied to the main body part; and under the condition that the overflow hole overflows outwards, injection of the filling material and ultrasonic vibration are stopped, and thermocuring treatment is carried out on the filling material injected into the main body piece in the vacuum environment, so that the superconducting magnet is obtained. The filling material is injected into the main body part in the vacuum environment, the thermocuring treatment is performed, and the ultrasonic vibration is applied to the main body part during injection, so that the contact probability of the filling material and the internal gap of the main body part is increased, the fluidity of the filling material is promoted, the filling fullness and uniformity are improved, and the reliability of the superconducting magnet is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of fusion reactors, and in particular relates to a method for processing superconducting magnets. Background Art

[0002] Superconducting magnets are the core components of fusion reactors. Their primary function is to generate a powerful magnetic field to confine high-temperature plasma, creating favorable conditions for the continued progress of nuclear fusion reactions. However, in practical applications, the coils of superconducting magnets are often sealed with filler materials such as epoxy resin. Liquid filler materials have a certain degree of ductility and viscosity, which makes it easy for tiny gaps to form during the filling process. Intrusive bubbles are difficult to eliminate, resulting in uneven force on the superconducting magnets and affecting their reliability. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the related art. To this end, this application proposes a superconducting magnet processing method that increases the contact probability between the filling material and the internal gap of the main body, promotes the fluidity of the filling material, improves the filling fullness and uniformity, and improves the reliability of the superconducting magnet.

[0004] In a first aspect, the present application provides a superconducting magnet processing method, comprising: Installing a superconducting coil in a coil box to form a main body, wherein the coil box has an overflow hole; placing the main body in a vacuum environment; injecting a filling material into the main body under the vacuum environment, and applying ultrasonic vibration to the main body; In the case that the overflow hole overflows outward, the injection of the filling material and the ultrasonic vibration are stopped, and the filling material injected into the main body is thermally solidified under the vacuum environment to obtain a superconducting magnet.

[0005] According to the superconducting magnet processing method of the present application, ultrasonic vibration is applied while injecting the filling material. Ultrasonic vibration can promote the flow of the filling material within the main body, that is, the gap between the coil box and the superconducting coil and the gap between the superconducting wires of the superconducting coil are repeatedly expanded and contracted by vibration, which helps to increase the filling rate of the filling material, facilitates the discharge of bubbles in the filling material, improves the uniformity of the filling, and facilitates the strengthening of the surface adhesion of the filling material to the superconducting coil and the coil box, respectively, reducing the possibility of uneven force due to incomplete filling. In addition, ultrasonic vibration is a non-contact vibration method that does not directly apply mechanical force to the coil box and superconducting coil, thereby reducing the possibility of damage to the main body and improving the reliability of the main body.

[0006] According to one embodiment of the present application, the ultrasonically vibrating the main member includes: The main body is subjected to intermittent ultrasonic vibration by an ultrasonic vibrator.

[0007] According to one embodiment of the present application, injecting a filling material into the main body comprises: Nitrogen is input into the main material tank to drive the filling material in the main material tank to be injected into the coil box, so as to adjust the pressure of the vacuum environment to the second target pressure.

[0008] According to one embodiment of the present application, the heat curing treatment of the filling material injected into the main body under the vacuum environment includes: adjusting the pressure of the vacuum environment to a fourth target pressure, and heating the filling material injected into the main member until it reaches a second target temperature; The main body is left to stand for a target period of time.

[0009] According to one embodiment of the present application, placing the main body in a vacuum environment includes: placing the main body into a filling chamber; When it is determined that the sealing performance of the filling chamber meets the sealing requirement, the filling chamber is evacuated until the pressure of the filling chamber reaches a first target pressure.

[0010] According to one embodiment of the present application, the step of heat-curing the filling material injected into the main body under the vacuum environment further includes: The filling material injected into the main body is subjected to a degassing process.

[0011] According to one embodiment of the present application, the degassing of the filling material injected into the main body includes: The pressure of the vacuum environment is adjusted to a third target pressure, and the third target pressure is less than the actual pressure of the vacuum environment when the filling material is injected.

[0012] According to one embodiment of the present application, before injecting the filling material into the main body, the method further includes: The main body is heated until a first target temperature is reached.

[0013] According to one embodiment of the present application, before placing the main body in a vacuum environment, the process further includes: Plasma cleaning is performed on the main body.

[0014] According to one embodiment of the present application, the step of heat-curing the filling material injected into the main body under the vacuum environment further comprises: Converting the vacuum environment into a normal temperature and pressure environment; The main body after the thermal curing treatment is subjected to at least one of grinding and chemical cleaning.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 This is one of the flow charts of the superconducting magnet processing method provided in the embodiment of the present application; Figure 2 This is the second flow chart of the superconducting magnet processing method provided in the embodiment of the present application; Figure 3 It is a structural diagram of the main body provided in an embodiment of the present application; Figure 4 This is a partial photograph of injecting a filling material into a main body while using intermittent ultrasonic vibrations, as provided in an embodiment of the present application; Figure 5 This is a partial photograph of the embodiment of the present application showing the process of injecting filling material into a main body while using continuous ultrasonic vibration. DETAILED DESCRIPTION

[0017] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0018] Reference below Figure 1 and Figure 2 A superconducting magnet processing method provided in an embodiment of the present application is described, and the superconducting magnet processing method includes steps 100, 200, 300 and 400.

[0019] Step 100: Install the superconducting coil in a coil box to form a main body. The coil box has an overflow hole.

[0020] It should be noted that the superconducting coil includes, but is not limited to, multiple stacked coils. The connection between the superconducting coil and the coil box includes, but is not limited to, welding. The shape, size, and number of the overflow holes, as well as the shape and size of the superconducting coil and coil box, can be designed based on actual needs and are not specifically limited in this embodiment.

[0021] As can be understood, the provision of overflow holes effectively reduces the subsequent overfilling of the coil box with filler material, thus minimizing structural deformation of the main body due to overfilling, or reducing the risk of overflowing and dislodging uncured filler material from the coil box, thereby affecting the integrity of the filling. Furthermore, the superconducting coils are secured to the coil box to form the main body, allowing subsequent filling material to fully enclose the superconducting coils and coil box. This effectively ensures the stability of the coil box and superconducting coils during operation, thus guaranteeing the quality and performance of the superconducting magnet.

[0022] Step 200: Place the main body in a vacuum environment.

[0023] It is understandable that the vacuum environment is set up to reduce the mixing of bubbles in the subsequent filling process, improve the uniformity and density of the filling material, and thus enhance the mechanical properties and thermal conductivity of the superconducting magnet.

[0024] Step 300: Inject filling material into the main body under a vacuum environment, and apply ultrasonic vibration to the main body.

[0025] It is understood that applying ultrasonic vibrations while injecting the filler material can promote the flow of the filler material within the main body. This vibration causes the gaps between the coil box and the superconducting coil, as well as the gaps between the superconducting wires of the superconducting coil, to expand and contract repeatedly. This helps to increase the fill rate of the filler material, facilitates the removal of bubbles in the filler material, improves the uniformity of the filling, and strengthens the surface adhesion of the filler material to the superconducting coil and coil box, respectively, thereby reducing the possibility of uneven force due to incomplete filling. Furthermore, ultrasonic vibration is a non-contact vibration method that does not directly apply mechanical force to the coil box and superconducting coil, thereby reducing the possibility of damage to the main body and improving the reliability of the main body.

[0026] Exemplarily, the filling material is epoxy resin, which has the characteristics of high chemical resistance, high temperature resistance, good adhesion and electrical properties, as well as high strength and stiffness.

[0027] Step 400: When the overflow hole overflows outward, stop injecting the filling material and ultrasonic vibration, and perform thermal curing treatment on the filling material injected into the main body under a vacuum environment to obtain a superconducting magnet.

[0028] It can be understood that thermal curing of the filling material in the main body under a vacuum environment can significantly reduce the generation of bubbles, improve the curing quality, reduce oxidation and contamination, enhance thermal conductivity, improve curing uniformity, and reduce curing time, thereby improving the performance and reliability of the superconducting magnet.

[0029] According to the superconducting magnet processing method provided in the embodiment of the present application, filling material is injected into the main part and heat-curing treatment is performed under a vacuum environment, and ultrasonic vibration is applied to the main part during the injection to increase the contact probability between the filling material and the internal gap of the main part, promote the fluidity of the filling material, improve the filling fullness and uniformity, and improve the reliability of the superconducting magnet.

[0030] In some embodiments, step 200 of placing the main body in a vacuum environment may also include: Step 110: plasma cleaning the main body.

[0031] As you can understand, plasma cleaning is a technology that uses plasma to perform physical and chemical surface treatments. Plasma cleaning removes as much impurities (organic matter, particulate matter, oxides, etc.) from the interior and exterior surfaces of the main component as possible. Plasma cleaning also alters the chemical properties of the main component's surface, making it more easily wetted by the filler material, thereby improving the filler's permeability and uniformity. Furthermore, plasma cleaning activates the main component's surface, increasing the number of active sites on the surface, thereby enhancing adhesion between the filler material and the main component, reducing the risk of delamination and peeling, and improving the reliability of the superconducting magnet.

[0032] In some embodiments, step 200 of placing the main body in a vacuum environment includes: Step 210: Place the main body into the filling chamber; Step 220 : When it is determined that the sealing performance of the filling chamber meets the sealing requirement, evacuate the filling chamber until the pressure of the filling chamber reaches a first target pressure.

[0033] It should be noted that the size and shape of the filling chamber can be designed according to actual needs, and this embodiment does not impose any specific restrictions on this. Exemplarily, the first target pressure is within the pressure range of 100-110 Pa.

[0034] It is understood that after the main body is placed in the filling chamber, the sealing of the filling chamber is first confirmed using an airtightness tester to ensure the reliable establishment of the vacuum environment and reduce the possibility of bubbles entering the main body due to poor sealing. The filling chamber is then gradually evacuated, and the pressure changes within the filling chamber are closely monitored using a vacuum barometer to obtain the actual pressure until the actual pressure reaches the first target pressure. This ensures that the main body is placed in a high vacuum environment, effectively reducing air and other impurities in the gap between the main body and the superconducting coil, creating favorable conditions for the subsequent uniform filling of the filling material and reducing the possibility of bubbles entering.

[0035] In some embodiments, the step of injecting a filling material into the main body further comprises: Step 230: Heat the main body until the first target temperature is reached.

[0036] Exemplarily, the first target temperature is within a temperature range of 44-46°C.

[0037] It is understood that heating the filling chamber by the heating device, thereby preheating the main body, can reduce the viscosity of the filling material, improve the fluidity of the filling material, and improve filling efficiency. Preheating the main body can also reduce the temperature difference between the filling material and the main body, reducing the possibility of bubbles caused by excessive temperature differences, improving the adhesion between the filling material and the main body, and enhancing the uniformity and density of the filling material.

[0038] In some embodiments, injecting a filling material into the main body in step 300 includes: Step 310: Nitrogen is input into the main material tank to drive the filling material in the main material tank to be injected into the coil box to adjust the pressure of the vacuum environment to a second target pressure.

[0039] Exemplarily, the second target pressure is 0.05 MPa; and the injection flow rate of the filling material is 50 mL / min.

[0040] It is understood that the nitrogen pressure can be used to precisely control the injection speed and amount of the filling material, improving filling efficiency and uniformity. At the same time, nitrogen, as an inert gas, will not chemically react with the filling material, ensuring the chemical stability of the filling material.

[0041] In some embodiments, the ultrasonic vibration of the main body in step 300 includes: Step 320: Perform intermittent ultrasonic vibration on the main body by using an ultrasonic vibrator.

[0042] It should be noted that the ultrasonic vibrator is installed in the filling chamber.

[0043] It can be understood that the intermittent vibration mode is that during the process of injecting the filling material, the ultrasonic vibration is started and paused according to a certain cycle, which can gradually destroy the bubbles in the filling material, causing them to burst and be discharged. The pause time after each vibration can also be used to ensure that the bubbles have enough time to be discharged and the filling material is redistributed in the main body. It can also reduce the possibility of damage to the filling material and the main body due to excessive vibration, thereby further promoting the uniformity and density of the filling material, reducing the mixing of bubbles, enhancing adhesion, and improving filling efficiency.

[0044] Furthermore, considering that mechanical energy is partially converted into heat during ultrasonic vibration, causing the temperature of the filler material or main body to rise, the intermittent vibration mode can achieve natural heat dissipation through the pause phase, effectively controlling the temperature and maintaining the injection of the filler material at a suitable temperature environment. At the same time, for large structures such as superconducting coils and coil boxes, the long-term continuous operation of the ultrasonic vibrator will generate fatigue stress and heat accumulation due to the high-frequency mechanical vibration and energy conversion, which can easily lead to wear, aging, or overheating damage to the ultrasonic vibrator. Intermittent vibration can extend the service life and reliability of the ultrasonic vibrator.

[0045] In some embodiments, each ultrasonic vibration in step 320 lasts for 60 minutes, the interval between two adjacent ultrasonic vibrations is 30 minutes, and a total of three ultrasonic vibrations are started, with a vibration frequency of 20 kHz.

[0046] It should be noted that, combined with Figures 3 to 5 As shown, Figure 3 Region 1 of the middle main body is closer to the overflow hole than regions 2 to 5, and region 5 is closer to the injection hole of the coil box for injecting filling material than regions 1 to 4. Figure 4 yes Figure 3 The main part in the vacuum environment is filled with filling material and ultrasonically vibrated for 60 minutes. After pausing for 30 minutes, the main part is photographed by a camera to obtain local photos of areas 1 to 5; Figure 5 yes Figure 3 After the main part in the vacuum environment is filled with filling material and continuously ultrasonically vibrated for 90 minutes, the main part is photographed by a camera at areas 1 to 5, where top refers to the top view of the main part and bottom refers to the bottom view of the main part. The black part in the photo represents the resin material and the white part in the photo represents bubbles.

[0047] It is understandable that, combined with Figure 4 and Figure 5 As shown, Figure 4 The number and volume of bubbles in the top view of region 4 and region 5 are much smaller than Figure 5 Top view of middle area 4 and area 5; Figure 4The number and volume of bubbles in the bottom view at the middle area 3 to 5 are much smaller than Figure 5 The bottom view at positions 3 to 5 in the middle area shows that, compared with continuous ultrasonic vibration while injecting the filling material, intermittent ultrasonic vibration while injecting the filling material has a better filling effect and saves energy.

[0048] It should be noted that it is difficult for the filling material to completely fill a large structure such as the main body in a short period of time, and areas 1 and 2 are closer to the overflow hole of the main body than areas 3 to 5. Figure 4 The image was taken 30 minutes after the main body stopped vibrating. At this time, the filling material gradually stabilized under the action of gravity and deposited in areas 3 to 5 as much as possible. Figure 5 The image was taken after the camera vibrated the main body for 90 minutes. At this time, the filling material was dispersed to areas 1 to 5 under the action of vibration. Figure 4 The number and volume of bubbles in the top and bottom views of region 1 and region 2 are greater than Figure 5 The top view and bottom view of the corresponding area in the figure can also be understood.

[0049] In some embodiments, the filling material injected into the main body is subjected to a heat curing process under a vacuum environment, and the process also includes: The filling material injected into the main body is degassed.

[0050] It is understandable that by degassing the filling material, bubbles and impurities in the main body and the filling material can be reduced as much as possible, thereby improving the density and uniformity of the filling material.

[0051] In some embodiments, degassing the filler material injected into the main body comprises: The pressure of the vacuum environment is adjusted to a third target pressure, and the third target pressure is lower than the actual pressure of the vacuum environment when the filling material is injected.

[0052] Exemplarily, the third target pressure is 0.01 MPa.

[0053] It can be understood that reducing the pressure of the vacuum environment from the original second target pressure to the third target pressure, that is, discharging any residual nitrogen through decompression, and allowing the nitrogen to carry the bubbles out together, reduces the re-mixing of bubbles, further improves the uniformity and density of the filling material, and enables the filling material to better contact with the surface of the main part, enhances adhesion, and reduces the risk of delamination and peeling.

[0054] In some embodiments, step 400 includes performing a heat curing process on the filling material injected into the main body under a vacuum environment, including: Step 410: Adjust the pressure of the vacuum environment to a fourth target pressure, and heat the filling material injected into the main body until it reaches a second target temperature; Step 420: Leave the main body still for a target time period.

[0055] Illustratively, the fourth target pressure is 0.1 MPa; the second target temperature is within the temperature range of 74-76°C.

[0056] It should be noted that the specific value of the target duration can be designed according to actual needs, and this embodiment does not impose any specific restrictions on this.

[0057] It is understood that by adjusting the pressure in the filling chamber and increasing the temperature in the filling chamber using a heating device, the filling material can be uniformly cured. In addition, by allowing the main body to rest for a target period of time, the filling material can be fully cured and the curing quality can be improved.

[0058] In some embodiments, step 400 includes heat curing the filling material injected into the main body under a vacuum environment, and then further comprising: Step 510: convert the vacuum environment to a normal temperature and pressure environment; Step 520 : performing at least one of polishing and chemical cleaning on the main body after the thermal curing treatment.

[0059] For example, chemical cleaning includes but is not limited to alkaline cleaning, acid cleaning, organic solvent cleaning, water-based surfactant cleaning, and circulating cleaning processes.

[0060] It is understood that after the thermal curing process is completed, the heating device is turned off and the vacuum in the filling chamber is slowly released to gradually restore the vacuum environment to normal temperature and pressure, thereby reducing the possibility of damage to the main component and filling material caused by rapid changes in pressure and temperature. The main component surface is then subjected to at least one of grinding and chemical cleaning to remove filling material that has overflowed from the overflow hole, thereby improving the surface quality and mechanical properties of the superconducting magnet and reducing thermal stress.

[0061] Illustratively, in this embodiment, the main body component after the heat curing treatment is first polished, and then the polished main body component is chemically cleaned.

[0062] For example, in combination Figure 2 As shown, the entire superconducting magnet processing method is as follows: 1. Preprocessing The superconducting coil is installed in a coil box to form a main body, wherein the coil box has an overflow hole; Plasma cleaning of the main parts; 2. Vacuum treatment placing the main body into the filling chamber; After confirming that the sealing of the filling chamber meets the sealing requirements, the filling chamber is evacuated and the pressure in the filling chamber is increased to 100~110Pa; 3. Preheating treatment The filling chamber is heated by a heating device until it reaches 44~46°C; 4. Filling Process Inject nitrogen into the main material tank to drive the filling material in the main material tank to be injected into the coil box at a flow rate of 50 mL / min to adjust the pressure of the vacuum environment to 0.05 MPa; During the process of injecting the filling material, the main part is subjected to intermittent ultrasonic vibration by an ultrasonic vibrator, and the vibration frequency is set to 20kHz, each vibration duration is 60 minutes, the interval between two adjacent ultrasonic vibrations is 30 minutes, and the ultrasonic vibration is started three times in total; 5. Degassing When all the overflow holes are overflowing, stop injecting the filling material and ultrasonic vibration, and adjust the pressure of the vacuum environment to 0.01MPa to degas the filling material by pressurizing; 6. Thermal curing treatment Adjust the pressure of the vacuum environment to 0.1 MPa, and heat the filling chamber through the heating device until it reaches 74~76℃; Leave the main body still for a target period of time; 7. Post-processing Convert the vacuum environment into a normal temperature and pressure environment; performing at least one of grinding and chemical cleaning on the main body after the thermal curing treatment to obtain a superconducting magnet; The superconducting magnet is subjected to tests including but not limited to mechanical strength tests, insulation performance tests, and magnetic field performance tests to determine whether the superconducting magnet meets the design requirements.

[0063] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0064] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0065] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0066] In the description of this application, “plurality” means two or more.

[0067] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0068] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0069] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0070] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A superconducting magnet processing method, characterized in that: include: Installing a superconducting coil in a coil box to form a main body, wherein the coil box has an overflow hole; placing the main body in a vacuum environment; injecting a filling material into the main body under the vacuum environment, and applying ultrasonic vibration to the main body; In the case that the overflow hole overflows outward, the injection of the filling material and the ultrasonic vibration are stopped, and the filling material injected into the main body is thermally solidified under the vacuum environment to obtain a superconducting magnet.

2. The superconducting magnet processing method according to claim 1, characterized in that: The ultrasonic vibration of the main body comprises: The main body is subjected to intermittent ultrasonic vibration by an ultrasonic vibrator.

3. The superconducting magnet processing method according to claim 1, characterized in that: The step of injecting a filling material into the main body comprises: Nitrogen is input into the main material tank to drive the filling material in the main material tank to be injected into the coil box, so as to adjust the pressure of the vacuum environment to the second target pressure.

4. The superconducting magnet processing method according to claim 1, characterized in that: The step of heat-curing the filling material injected into the main body under the vacuum environment includes: adjusting the pressure of the vacuum environment to a fourth target pressure, and heating the filling material injected into the main member until it reaches a second target temperature; The main body is left to stand for a target period of time.

5. The superconducting magnet processing method according to claim 1, characterized in that: Placing the main body in a vacuum environment comprises: placing the main body into a filling chamber; When it is determined that the sealing performance of the filling chamber meets the sealing requirement, the filling chamber is evacuated until the pressure of the filling chamber reaches a first target pressure.

6. The superconducting magnet processing method according to any one of claims 1 to 5, characterized in that: Before performing a heat curing process on the filling material injected into the main body under the vacuum environment, the method further comprises: The filling material injected into the main body is subjected to a degassing process.

7. The superconducting magnet processing method according to claim 6, characterized in that: The degassing treatment of the filling material injected into the main body comprises: The pressure of the vacuum environment is adjusted to a third target pressure, and the third target pressure is less than the actual pressure of the vacuum environment when the filling material is injected.

8. The superconducting magnet processing method according to any one of claims 1 to 5, characterized in that: Before injecting the filling material into the main body, the method further comprises: The main body is heated until a first target temperature is reached.

9. The superconducting magnet processing method according to any one of claims 1 to 5, characterized in that: Placing the main body in a vacuum environment, before that, further comprises: Plasma cleaning is performed on the main body.

10. The superconducting magnet processing method according to any one of claims 1 to 5, characterized in that: The step of heat-curing the filling material injected into the main body under the vacuum environment further comprises: Converting the vacuum environment into a normal temperature and pressure environment; The main body after the thermal curing treatment is subjected to at least one of grinding and chemical cleaning.

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