Dynamic temperature control device and temperature control method for superconducting material coating area

Abstract

The invention provides a superconducting material coating area dynamic temperature control device and method. The superconducting material coating area dynamic temperature control device comprises a first surface laser arranged on the front side of a coating area; and the first surface laser is used for heating the superconducting tape before entering the coating area in a direct irradiation mode, so that the superconducting tape reaches a first preset temperature. According to the method, the superconductive strip in dynamic high-speed movement can be heated in an ultrafast manner, high-fineness temperature rising and falling process control can be implemented, and beneficial complex nonlinear temperature gradient control can be formed, so that the size of a superconductive high-quality coating area is greatly expanded, a temperature window of multi-channel dynamic coating is greatly expanded, and the coating efficiency of a superconductive film layer is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the field of superconducting materials, and in particular to a dynamic temperature control device and a temperature control method for a superconducting material coating area. Background Art

[0002] This article describes the deposition of a REBCO film by PLD (Pulsed Laser Deposition), but is not limited to REBCO as a superconducting material or PLD as a method.

[0003] Deposition temperature is one of the most critical parameters in the superconducting layer process. The temperature range for the growth of REBCO thin films is very narrow, generally only 20°C. Large-scale industrial production of superconducting tapes requires the base tape to have a high tape speed to meet its high production needs. Existing superconducting coating heating systems often use quartz lamps or carbon rod heating structures. The lamps or carbon rods first heat the substrate through thermal radiation, and the substrate then transfers the heat to the high-speed moving base tape, eventually allowing the base tape to reach a suitable temperature for superconducting film deposition. However, the traditional heating system has a long heating and heat transfer link, a slow heating speed, and a serious temperature control lag. The final temperature on the base tape will also be affected by the thermal contact between the base tape and the substrate, making the heating and temperature control effects of the base tape unsatisfactory. In the actual production process (such as Figure 1 ), the high-speed moving base belt heats up slowly, and the temperature of the base belt is still lower than the ideal coating temperature when it reaches the coating area, resulting in poor coating quality. Moreover, due to the hysteresis of heating and temperature control and the inaccuracy of spatial position, the base belt continues to heat up when it leaves the coating area, causing the coated layer to be melted or destroyed by the high temperature (such as Figure 2 Curve 1). Therefore, the coating area with the right temperature in the traditional heating system is extremely small, which seriously affects the quality and efficiency of superconducting coating. Patent document with authorization publication number CN114438468B discloses a heating device that can be applied to superconducting coating. By introducing a reflective wall wrapping structure to increase the heating rate of the substrate in front of the coating area, the above problem is partially improved. However, there are still problems such as complex heating structure and poor reliability consistency (such as Figure 2 Middle curve 2).

[0004] In addition to slow heating rates and lags in temperature control, traditional heating systems also suffer from the inability to achieve high-precision temperature gradient control between coating passes. In actual superconductor production, superconducting tapes are coated in a reciprocating, multi-pass process, resulting in significant differences in film thickness and coating rate between passes. Because thicker superconducting films dissipate less heat via surface radiation, the surface temperature will be higher than that of thinner films. Therefore, the temperature of each pass must be adjusted based on the thickness of the superconducting film, lowering the deposition temperature for thicker passes and increasing it for thinner ones. This means that a high-precision temperature gradient must be established between passes. Due to the physical limitations of the substrate's heat conduction process, traditional heating systems inherently struggle to achieve high-region precision, large temperature gradients between passes. Consequently, meeting the demands for high-quality coatings on superconducting films is difficult.

[0005] Based on the above reasons, superconducting coating urgently needs to develop a dynamic temperature control device and temperature control method for the superconducting material coating area that can overcome the many disadvantages of the existing superconducting coating heating system. Summary of the Invention

[0006] In view of the defects in the prior art, the purpose of the present invention is to provide a dynamic temperature control device and temperature control method for a superconducting material coating area.

[0007] According to the present invention, a dynamic temperature control device for a superconducting material coating area includes a first surface laser arranged at the front side of the coating area;

[0008] The first-side laser is used to heat the superconducting tape before entering the coating area by direct irradiation, so that the superconducting tape reaches a first preset temperature.

[0009] Furthermore, the first preset temperature is a temperature between the upper limit and the middle region of the optimal deposition temperature window of the superconducting material.

[0010] Furthermore, it also includes a second surface laser and a substrate arranged in the coating area, and the second surface laser is used to indirectly conduct heat to the superconducting tape by irradiating the substrate, so that the superconducting tape is cooled and maintained within a preset temperature range.

[0011] Furthermore, it also includes a third surface laser arranged at the rear side of the coating area, and the third surface laser is used to heat the superconducting tape after leaving the coating area by direct irradiation, and control the speed of further cooling of the superconducting tape.

[0012] Furthermore, the preset temperature range is the temperature in the middle area of the optimal deposition temperature window of the superconducting material.

[0013] Furthermore, the first surface laser directly irradiates the front side or the back side of the superconducting tape.

[0014] Furthermore, it also includes:

[0015] Fiber optic pyrometers are respectively arranged at the front side, the coating area, and the rear side of the coating area to detect the temperature of the superconducting tape in a non-contact manner, and the first surface laser, the second surface laser, and the third surface laser respectively adjust the laser output power according to the detected temperature;

[0016] The dust isolation devices are respectively arranged on the front side of the coating area and the rear side of the coating area close to the coating area.

[0017] Furthermore, the superconducting tape is circulated multiple times from the front side of the coating area to the back side of the coating area, forming multiple coating passes;

[0018] There are different preset temperatures between each coating pass in the front side of the coating area, the coating area or the rear side of the coating area, or there are preset temperature gradients between all coating passes, or there are preset temperature distributions between all coating passes.

[0019] Furthermore, the substrate includes a flat plate shape and a drum shape.

[0020] According to a method for dynamic temperature control of a superconducting material coating area provided by the present invention, the method adopts the dynamic temperature control device for superconducting material coating area, and the method comprises:

[0021] Step 1: transport the superconducting tape to the front side of the coating area, and heat the superconducting tape by direct irradiation of a first-side laser to make the superconducting tape reach a first preset temperature.

[0022] Furthermore, it also includes:

[0023] Step 2: transporting the superconducting tape to the coating area, and indirectly heating the superconducting tape by irradiating the substrate with a second laser, so that the superconducting tape is cooled and maintained within a preset temperature range;

[0024] Step 3: Transport the superconducting tape to the back of the coating area, heat the superconducting tape by direct irradiation with a third-side laser, and control the cooling rate of the superconducting tape.

[0025] Furthermore, the method for heating the superconducting tape in each zone of the dynamic temperature control device for the superconducting material coating area includes method 1:

[0026] Along the traveling direction of the superconducting tape in each coating pass, the coating area, the front side of the coating area, and the rear side of the coating area on the coating pass are heated and the temperature is measured respectively;

[0027] Setting the target temperature at the front side of the coating area to a temperature between the upper limit and the middle region of the optimal deposition temperature window of the superconducting material and maintaining the temperature;

[0028] The target temperature of the coating area is set to the middle area of the optimal deposition temperature window, so that the superconducting tape is cooled and maintained at this temperature in the coating area.

[0029] Furthermore, the method for heating the superconducting tape in each zone of the dynamic temperature control device for the superconducting material coating area includes the second method:

[0030] Each coating pass is heated separately to obtain the temperature data of each area on each coating pass / the temperature gradient between the same areas on each coating pass;

[0031] The target temperature of the same area in each coating pass is set to the same temperature value to obtain a uniform temperature coating area with consistent temperature in each coating pass.

[0032] Furthermore, the method for heating the superconducting tape in each zone of the dynamic temperature control device for the superconducting material coating area includes method three:

[0033] Each coating pass is heated separately to obtain the temperature data of each area on each coating pass / the temperature gradient between the same areas on each coating pass;

[0034] The temperature gradient between the same areas in each coating pass is set to a preset linear temperature gradient, so as to obtain a non-uniform temperature coating area with a linear temperature distribution in each coating pass.

[0035] Furthermore, the method for heating the superconducting tape in each zone of the dynamic temperature control device for the superconducting material coating area includes method 4:

[0036] Each coating pass is heated separately to obtain the temperature data of each area on each coating pass / the temperature gradient between the same areas on each coating pass;

[0037] Based on the thickness of the superconducting film layer on each coating pass, the temperature gradient between the same areas on each coating pass is set to a preset nonlinear temperature gradient, forming a non-uniform temperature coating area with nonlinear temperature distribution on each coating pass.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The present invention uses a high-power surface laser to achieve direct or indirect heating of the strip, greatly improving the strip heating rate, allowing it to enter the optimal deposition temperature window more quickly and maintain stability. It can implement high-precision temperature control, greatly broaden the area of the superconducting coating zone, greatly expand the temperature window of multi-pass dynamic coating, and significantly improve the quality of the superconducting coating.

[0040] 2. The present invention uses high-power surface lasers and fiber optic pyrometers to achieve high-precision temperature gradient control between each coating pass, which can meet the needs of superconducting high-quality coating.

[0041] 3. The present invention can achieve a uniform temperature superconducting coating area with consistent temperature in each coating pass, thereby solving the problem of large-scale temperature drift in traditional temperature measurement and temperature control, and improving the quality of superconducting coating.

[0042] 4. The present invention can achieve a non-uniform temperature coating zone with linear temperature distribution in each coating pass, and the quality of the superconducting coating is better than that of the uniform temperature coating zone, which is difficult to achieve with traditional heating and temperature control methods.

[0043] 5. The present invention can achieve a non-uniform temperature coating zone with complex nonlinear temperature distribution in each coating pass, and the temperature gradient setting between each coating pass is more scientific, and the quality of the superconducting coating is optimal, which is difficult to achieve with traditional heating and temperature control methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0045] Figure 1 This is a schematic diagram of the spatial positions of various regions including the coating area during the superconducting coating process;

[0046] Figure 2 Schematic diagram of the strip temperature distribution with spatial position in the traditional heating system (curve 1) and the heating system with reflective wall (curve 2) during the superconducting coating process;

[0047] Figure 3 A schematic structural diagram of a dynamic temperature control device for a superconducting material coating area provided in an embodiment of this specification;

[0048] Figure 4 A schematic diagram of the structure of a dynamic temperature control device for a superconducting material coating area provided in an embodiment of this specification;

[0049] Figure 5 A flow chart of a method for dynamic temperature control of a superconducting material coating area provided in an embodiment of this specification;

[0050] Figure 6 This is a schematic diagram of the beneficial effects of the spatial distribution of strip temperature achieved by a dynamic temperature control device and method for a superconducting material coating area according to an embodiment of this specification;

[0051] Figure 7 A schematic diagram of an ideal uniform temperature between each coating pass perpendicular to the strip travel direction provided in the embodiments of this specification;

[0052] Figure 8 A schematic diagram of a typical temperature drift problem between coating passes provided in the embodiments of this specification;

[0053] Figure 9Schematic diagram of a typical large-scale temperature drift problem between coating passes provided in the embodiments of this specification;

[0054] Figure 10 A schematic diagram of a dynamic temperature control device and method for controlling temperature drift in a superconducting material coating area provided in an embodiment of this specification;

[0055] Figure 11 A schematic diagram of a dynamic temperature control device and method for a superconducting material coating area provided in an embodiment of this specification for achieving temperature control at specific temperature gradients;

[0056] Figure 12 The thickness data of the superconducting film layer for each coating pass provided in the embodiments of this specification and a schematic diagram showing the relationship between the superconducting film layer thickness and the deposition temperature;

[0057] Figure 13 A schematic diagram of a dynamic temperature control device and method for a superconducting material coating area provided in an embodiment of this specification for implementing high-precision temperature gradient temperature control according to the thickness of a superconducting film layer;

[0058] In the picture:

[0059] First surface laser 101 ; second surface laser 102 ; fiber optic pyrometer 201 ; dust isolation device 301 ; substrate 401 . DETAILED DESCRIPTION

[0060] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0061] like Figure 3 、 Figure 4 As shown, the present invention provides a dynamic temperature control device for a superconducting material coating area. The dynamic temperature control device for a superconducting material coating area is installed in a heating area for superconducting material coating. The heating area includes a front side of the coating area, a coating area, and a rear side of the coating area. The superconducting tape is correspondingly configured to enter the front side of the coating area, the coating area, the rear side of the coating area, and the non-heating area in the heating area from the non-heating area, forming a single or multi-pass coating process. The dynamic temperature control device for a superconducting material coating area includes:

[0062] A first surface laser 101, positioned in front of the coating zone, is used to heat the superconducting tape by directly irradiating the front or back of the tape, bringing it to a first preset temperature. Directly irradiating the front side of the tape results in faster heating efficiency and improved coating results, while directly irradiating the back side of the tape reduces or avoids laser damage to the front material. The first preset temperature is between the upper limit and the middle range of the superconducting material's optimal deposition temperature window, typically at or slightly below the upper limit. The coating zone also includes a dust isolation device 301, located in front of the coating zone, near the coating zone, to isolate and protect the surface laser and fiber pyrometer from dust. The dust isolation device 301 can be passively isolated by a sealed box or baffle, actively isolated by generating an electrostatic field, or actively isolated by spraying process gas to create positive pressure. The wavelength of the surface laser is selected based on the absorption efficiency of the heated object at that wavelength and the availability of high-power lasers. Infrared and green wavelengths are primarily used in the superconducting coating process. A surface laser can be a single surface light source or a combination of multiple surface light sources in an array. The output power of the surface light source depends on the heating power required at the specific location of the heated object. The spot shape of the surface laser can be regular, such as square or circular, or other irregular shapes.

[0063] A third-side laser, dust isolation device, and fiber pyrometer are located behind the coating area. The third-side laser is used to heat the superconducting tape by directly irradiating the front or back of the tape, thereby controlling the tape's cooling rate. The dust isolation device is located behind the coating area, close to the coating area. The fiber pyrometer non-contactly monitors the superconducting tape's temperature. The third-side laser adjusts its output power based on the detected temperature.

[0064] The second laser 102 and substrate 401 are located in the coating area. The second laser 102 is used to indirectly heat the backside of the superconducting tape by irradiating the substrate 401, avoiding the effects of the high-energy plasma plume in the superconducting coating area. This allows the superconducting tape to cool down and maintain within a preset temperature range. The preset temperature range is the middle region of the optimal deposition temperature window. Substrate 401 can be a flat plate, roller, or other shape of a certain thickness, and made of ceramic or metal with high thermal conductivity and high temperature resistance.

[0065] Each coating pass of the superconducting tape has a different preset temperature, or there is a preset temperature gradient between all coating passes, or there is a preset temperature distribution between all coating passes.

[0066] like Figure 5 and Figure 6 As shown, the present invention provides a method for dynamic temperature control of a superconducting material coating area, which uses the above-mentioned dynamic temperature control device for a superconducting material coating area, and the method includes:

[0067] Step 1: transport the superconducting tape to the front side of the coating area, and heat the superconducting tape by direct irradiation with the first surface laser 101 to make the superconducting tape reach a first preset temperature.

[0068] Step 2: The superconducting tape is transported to the coating area, and the second laser 102 is used to irradiate the substrate 401 to indirectly conduct heat to the superconducting tape, so that the temperature of the superconducting tape is reduced and maintained within a preset temperature range.

[0069] Step 3: Transport the superconducting tape to the back of the coating area, heat the superconducting tape by direct irradiation with a third-side laser, and control the cooling rate of the superconducting tape.

[0070] Several methods of heating superconducting tape in different zones are given below, including:

[0071] Temperature Control Example 1: The temperature gradient along the direction of the strip during each coating pass is very important for the coating quality. When the strip moves at high speed on the corresponding coating pass, it will experience a rapid temperature rise, temperature maintenance, a small temperature drop, a controlled temperature drop, and finally a rapid temperature drop ( Figure 6 This dynamic change ensures that the surface temperature of the strip remains within the optimal deposition temperature window, achieving high-quality superconducting coatings. In the front of the superconducting coating zone, direct irradiation heating by a high-power surface laser allows the superconducting strip to rapidly heat up during dynamic, high-speed motion, quickly entering the optimal deposition temperature window and then maintaining this temperature. Typically, the temperature in this zone is set to the upper limit of the optimal deposition temperature window.

[0072] In the coating area, a high-power surface laser heats the substrate and conducts heat to the superconducting tape through indirect conduction. By setting a temperature higher than the lower limit of the optimal deposition temperature window and slightly lower than the upper limit of the window, the superconducting tape can slowly and slightly cool down while passing through the coating area and always maintain it in the center of the optimal deposition temperature window, greatly expanding the area of the coating area with the right temperature and achieving efficient coating of high-quality superconducting film layers. After the superconducting tape passes through the coating area, it can achieve controllable cooling based on the back side of the coating area of the present invention to optimize the crystal quality of the superconducting film layer during the recrystallization process, achieve deposition temperature optimization of the entire coating pass and high-precision temperature rise and fall process control ( Figure 6 ).

[0073] Temperature Control Example 2: Traditionally, the superconducting coating temperature zone needs to be more uniform and within the range of ±5°C of the optimal temperature of the superconducting coating. That is, in production, the temperature of each coating pass must be consistent ( Figure 7 ), and within the optimal temperature range of ±5°C for superconducting coating. However, due to factors such as slow heating speed, delayed temperature control, and inability to achieve high-precision temperature gradient control, traditional heating systems often cause the actual strip surface or each coating pass temperature to drift or even drift over a large range ( Figure 8 and Figure 9 ). Apply the dynamic temperature control device of the present invention, heat and measure the temperature one by one, and obtain the difference between the actual temperature gradient and the target temperature between the same areas of each coating pass (such as Figure 10 ), based on this difference, the laser output is controlled and the temperature is adjusted, which ultimately ensures that the temperature of the same area of each coating pass is uniform and within the range of ±5°C of the target temperature (such as Figure 10 ).

[0074] Temperature Control Example 3: Based on practical experience, it is found that setting a reasonable temperature gradient between each coating pass can improve the coating quality. Simply set the target temperature gradient with a linear temperature change (such as Figure 11 ), Figure 11 The target temperature gradient set in is: -0℃, -0℃, -3℃, -3℃, -6℃, -6℃, -9℃. By applying the dynamic temperature control device of the present invention, heating and measuring the temperature one by one, the difference between the actual temperature gradient and the target temperature between the same areas of each coating pass is obtained. According to this difference, the surface laser output is controlled and the temperature is adjusted, and finally it can be ensured that the temperature of each coating pass can be distributed according to the target temperature gradient (such as Figure 11 ).

[0075] Temperature Control Example 4: Based on practical experience and scientific evidence, the target temperature gradient should be set according to the thickness of the superconducting film layer in each coating pass rather than a simple linear change (such as Figure 12 ). The target temperature gradient is set according to the thickness of the superconducting film layer in each coating pass and the thickness variation data of the superconducting film layer between adjacent coating passes. The target temperature of the pass with a large superconducting film layer thickness is set lower, and the target temperature of the pass with a small superconducting film layer thickness is set higher. The difference in the target temperature setting values between adjacent coating passes needs to be proportional to the variation amplitude of the superconducting film layer thickness between adjacent passes. The difference in the target temperature setting values between adjacent coating passes with a large thickness variation is larger, and vice versa. This complex temperature gradient setting cannot be obtained with a reasonable finite number of attempts, and the more coating passes there are, the more difficult it is to obtain. Figure 13 The target temperature gradients set in the process are: -0°C, -1°C, -3°C, -6°C, -9°C, -11°C, -12°C. By applying the dynamic temperature control device of the present invention, heating and measuring the temperature one by one, the difference between the actual temperature gradient and the target temperature of the same area in each coating pass is obtained. Based on this difference, the surface laser output is controlled and the temperature is adjusted, and finally the temperature of each coating pass can be ensured to be distributed according to the target temperature gradient (such as Figure 13 ).

[0076] The dynamic temperature control device and method for the superconducting coating area described in the present invention can achieve ultra-fast heating of dynamic high-speed moving superconducting strips, implement high-precision temperature rise and fall process control, and form beneficial complex nonlinear temperature gradient control, which greatly expands the size of the superconducting high-quality coating area and significantly improves the superconducting film layer coating efficiency.

[0077] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this 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 cannot be understood as a limitation on this application.

[0078] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A dynamic temperature control device for a superconducting material coating area, characterized in that: It includes a first laser (101) arranged on the front side of the coating area; The first laser (101) is used to heat the superconducting tape before entering the coating area by direct irradiation, so that the superconducting tape reaches a first preset temperature.

2. The dynamic temperature control device for superconducting material coating area according to claim 1, characterized in that: The first preset temperature is a temperature between the upper limit and the middle region of the optimal deposition temperature window of the superconducting material.

3. The dynamic temperature control device for superconducting material coating area according to claim 1, characterized in that: The invention also includes a second surface laser (102) and a substrate (401) arranged in the coating area. The second surface laser (102) is used for indirectly conducting and heating the superconducting tape by irradiating the substrate (401), so that the superconducting tape is cooled and maintained within a preset temperature range.

4. The dynamic temperature control device for superconducting material coating area according to claim 3, characterized in that: It also includes a third surface laser arranged at the rear side of the coating area, and the third surface laser is used to heat the superconducting tape after leaving the coating area by direct irradiation, and control the speed of further cooling of the superconducting tape.

5. The dynamic temperature control device for superconducting material coating area according to claim 3, characterized in that: The preset temperature range is the temperature in the middle area of the optimal deposition temperature window of the superconducting material.

6. The dynamic temperature control device for superconducting material coating area according to claim 1, characterized in that: The first laser (101) directly irradiates the front side or the back side of the superconducting tape.

7. The dynamic temperature control device for superconducting material coating area according to claim 4, characterized in that: Also includes: Optical fiber pyrometers (201) are respectively arranged at the front side of the coating area, the coating area, and the rear side of the coating area to detect the temperature of the superconducting tape in a non-contact manner, and the first surface laser (101), the second surface laser (102), and the third surface laser respectively adjust the laser output power according to the detected temperature; Dust isolation devices (301) are respectively arranged on the front side of the coating area and the rear side of the coating area, close to the coating area.

8. The dynamic temperature control device for superconducting material coating area according to claim 4, characterized in that: The superconducting tape circulates multiple times from the front side of the coating area to the back side of the coating area, forming multiple coating passes; There are different preset temperatures between each coating pass in the front side of the coating area, the coating area or the rear side of the coating area, or there are preset temperature gradients between all coating passes, or there are preset temperature distributions between all coating passes.

9. The dynamic temperature control device for superconducting material coating area according to claim 3, characterized in that: The substrate (401) includes a flat plate shape and a drum shape.

10. A method for dynamic temperature control of a superconducting material coating area, characterized in that: The method using the superconducting material coating area dynamic temperature control device according to any one of claims 1 to 9 comprises: Step 1: transporting a superconducting tape to the front side of a coating area, and heating the superconducting tape by direct irradiation with a first surface laser (101), so that the superconducting tape reaches a first preset temperature.

11. The method for dynamic temperature control of a superconducting material coating area according to claim 10, characterized in that: Also includes: Step 2: transporting the superconducting tape to the coating area, and indirectly heating the superconducting tape by irradiating the substrate (401) with a second laser (102), so as to cool the superconducting tape and maintain it within a preset temperature range; Step 3: Transport the superconducting tape to the back of the coating area, heat the superconducting tape by direct irradiation with a third-side laser, and control the cooling rate of the superconducting tape.

12. The method for dynamic temperature control of a superconducting material coating area according to claim 10 or 11, characterized in that: The method of heating the superconducting tape in each zone of the dynamic temperature control device for the superconducting material coating zone includes method 1: Along the traveling direction of the superconducting tape in each coating pass, the coating area, the front side of the coating area, and the rear side of the coating area on the coating pass are heated and the temperature is measured respectively; Setting the target temperature at the front side of the coating area to a temperature between the upper limit and the middle region of the optimal deposition temperature window of the superconducting material and maintaining the temperature; The target temperature of the coating area is set to the middle area of the optimal deposition temperature window, so that the superconducting tape is cooled and maintained at this temperature in the coating area.

13. The method for dynamic temperature control of a superconducting material coating area according to claim 10 or 11, characterized in that: The method of heating the superconducting tape in each zone of the dynamic temperature control device for the superconducting material coating zone includes the second method: Each coating pass is heated separately to obtain the temperature data of each area on each coating pass / the temperature gradient between the same areas on each coating pass; The target temperature of the same area in each coating pass is set to the same temperature value to obtain a uniform temperature coating area with consistent temperature in each coating pass.

14. The method for dynamic temperature control of a superconducting material coating area according to claim 10 or 11, characterized in that: The method of heating the superconducting tape in each zone of the dynamic temperature control device for the superconducting material coating zone includes method three: Each coating pass is heated separately to obtain the temperature data of each area on each coating pass / the temperature gradient between the same areas on each coating pass; The temperature gradient between the same areas on each coating pass is set to a preset linear temperature gradient, so as to obtain a non-uniform temperature coating area with a linear temperature distribution on each coating pass.

15. The method for dynamic temperature control of a superconducting material coating area according to claim 10 or 11, characterized in that: The method of heating the superconducting tape in each zone of the dynamic temperature control device for the superconducting material coating zone includes method 4: Each coating pass is heated separately to obtain the temperature data of each area on each coating pass / the temperature gradient between the same areas on each coating pass; Based on the thickness of the superconducting film layer on each coating pass, the temperature gradient between the same areas on each coating pass is set to a preset nonlinear temperature gradient, forming a non-uniform temperature coating area with nonlinear temperature distribution on each coating pass.

Images