Temperature control device, method and coating equipment for improving flatness of stainless steel surface

Abstract

The application discloses a temperature control device, a method and a coating equipment for improving flatness of a stainless steel surface, the temperature control device comprising a control mechanism, a heating and pressurizing mechanism, a temperature control mechanism and a cooling mechanism; the heating and pressurizing mechanism is used for heating and pressurizing the stainless steel provided with a power generation film; the temperature control mechanism is used for slowly cooling the heated stainless steel; the cooling mechanism is used for cooling the slowly cooled stainless steel; and the control mechanism is connected with the heating and pressurizing mechanism, the temperature control mechanism and the cooling mechanism. The heating and pressurizing mechanism is used for flattening the deformation such as wrinkles and warping generated on the surface of the stainless steel in high-temperature pulling; the temperature control mechanism is used for slowly cooling the stainless steel, so as to prevent the temperature from suddenly dropping and affecting the internal stress of the stainless steel and reduce the generation of cracking phenomenon of the stainless steel; and then the cooling device is used for cooling the stainless steel, so that the stainless steel is at room temperature, and the stainless steel at the room temperature is convenient to wind.

Description

Technical Field

[0001] This application relates to the field of temperature control technology, and in particular to a temperature control device, method and coating equipment for improving the surface flatness of stainless steel. Background Technology

[0002] Coating equipment typically uses stainless steel coils as substrates because the substrate temperature during coating exceeds 700℃, and stainless steel coils can withstand temperatures above 700℃. Furthermore, stainless steel coils can be made in thicknesses of 30-100μm, offering flexibility and saving steel. The manufacturing process for stainless steel coils is relatively mature and inexpensive, making them an ideal substrate for flexible thin-film solar cells. However, stainless steel coils must withstand high temperatures and tension during coating. Under high-temperature stretching, the surface of the steel coil is prone to wrinkles and warping, failing to meet the flatness requirements of the coating equipment. Summary of the Invention

[0003] This application provides a temperature control device, method, and coating equipment for improving the surface flatness of stainless steel, in order to solve the deformation problems such as wrinkles and warping that occur on the surface of steel coils during high-temperature stretching.

[0004] The embodiments of this application adopt the following technical solutions:

[0005] In a first aspect, embodiments of this application provide a temperature control device for improving the flatness of stainless steel surfaces, comprising: a control mechanism, a heating and pressurizing mechanism, a temperature control mechanism, and a cooling mechanism;

[0006] The heating and pressurizing mechanism is used to heat and pressurize stainless steel with a power-generating film.

[0007] The temperature control mechanism is used to slowly cool down the stainless steel after it has been heated and pressurized;

[0008] The cooling mechanism is used to cool the slowly cooling stainless steel.

[0009] The control mechanism is connected to the heating and pressurizing mechanism, the temperature control mechanism, and the cooling mechanism. The control mechanism is used to control the temperature and pressure of the heating and pressurizing mechanism, the temperature and pressure of the temperature control mechanism, and the temperature of the cooling mechanism.

[0010] Optionally, in the above-mentioned temperature control device for improving the surface flatness of stainless steel, the heating and pressurizing mechanism includes a hot pressing unit and a support unit, wherein the hot pressing unit and the support unit are symmetrically arranged on the upper and lower opposite surfaces of the stainless steel; or

[0011] The heating and pressurizing mechanism includes two hot pressing units symmetrically arranged on the upper and lower opposite surfaces of the stainless steel, and the hot pressing units are connected to the control mechanism.

[0012] Optionally, in the above-mentioned temperature control device for improving the surface flatness of stainless steel, the hot pressing unit includes a housing with a first opening on the side near the stainless steel and a gap with the stainless steel, a chamber is provided inside the housing, and a heating component is provided on the inner wall of the chamber on the side away from the first opening.

[0013] Optionally, in the above-mentioned temperature control device for improving the flatness of stainless steel surfaces, the support unit is a heating plate.

[0014] Optionally, in the above-mentioned temperature control device for improving the surface flatness of stainless steel, the chamber is a vacuum chamber filled with inert gas, and the heating plate is a vacuum heating plate with at least one suction hole.

[0015] Optionally, in the above-mentioned temperature control device for improving the surface flatness of stainless steel, the heating component includes at least one LED light evenly distributed on the inner wall of the cavity; or

[0016] The heating component is a resistance wire heating element.

[0017] Optionally, the temperature control device described above for improving the surface flatness of stainless steel includes a temperature-controlled heating plate disposed on one side of the stainless steel and in contact with it; or

[0018] The temperature control mechanism includes two temperature-control heating plates symmetrically arranged on both sides of the stainless steel and in contact with the stainless steel; or

[0019] The temperature control mechanism includes a temperature-controlled heating plate disposed on one side of the stainless steel and having a gap with the surface of the stainless steel; or

[0020] The temperature control mechanism includes two temperature-controlling heating plates symmetrically arranged on both sides of the stainless steel, each having a gap with the surface of the stainless steel; or

[0021] The temperature control mechanism includes a temperature-controlled heating cavity with a second opening near the stainless steel side and a gap between it and the stainless steel surface; or

[0022] The temperature control mechanism includes two temperature-controlled heating chambers symmetrically arranged on both sides of the stainless steel, with a second opening on the side closer to the stainless steel, and both having gaps between their chambers and the surface of the stainless steel; or

[0023] The temperature control mechanism includes at least two temperature control rollers symmetrically arranged on both sides of the stainless steel. The temperature of the temperature control rollers arranged on one side of the stainless steel along the direction from the heating and pressurizing mechanism to the cooling mechanism decreases at an equal gradient.

[0024] Optionally, in the above-mentioned temperature control device for improving the surface flatness of stainless steel, the temperature control mechanism is filled with heating oil at 100-900°C; the interlayer of the temperature control heating plate and the temperature control heating cavity is filled with heating oil at 100-400°C; and the temperature control roller along the direction from the heating and pressurizing mechanism to the cooling mechanism is provided with heating oil at 100-900°C that decreases at an equal gradient.

[0025] Optionally, in the aforementioned temperature control device for improving the surface flatness of stainless steel, the cooling mechanism includes a cooling plate disposed on one side of the stainless steel but not applying force to the stainless steel; or

[0026] The cooling mechanism includes two cooling plates symmetrically arranged on both sides of the stainless steel, but which do not exert any force on the stainless steel; or

[0027] The cooling mechanism includes a cooling plate disposed on one side of the stainless steel and having a gap with the surface of the stainless steel; or

[0028] The cooling mechanism includes two cooling plates symmetrically arranged on both sides of the stainless steel, each having a gap with the surface of the stainless steel;

[0029] The cooling mechanism includes two cooling rollers symmetrically arranged on both sides of the stainless steel, but which do not exert force on the stainless steel.

[0030] Optionally, in the temperature control device described above for improving the surface flatness of stainless steel, the cooling mechanism is filled with coolant.

[0031] Secondly, a coating apparatus is provided, including any of the above-mentioned temperature control devices for improving the surface smoothness of stainless steel.

[0032] Thirdly, a method for improving the surface flatness of stainless steel using the aforementioned temperature control device is provided, comprising:

[0033] Stainless steel with a power-generating film is heated and pressurized;

[0034] The stainless steel, after being heated and pressurized, is then slowly cooled down.

[0035] The stainless steel, which is slowly cooling down, is then cooled.

[0036] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects:

[0037] This application discloses a temperature control device for improving the surface flatness of stainless steel. The device uses a heating and pressurizing mechanism to flatten the wrinkles and warping caused by high-temperature stretching on the surface of stainless steel. Then, a temperature control mechanism slowly cools the stainless steel to prevent the sudden temperature drop from affecting the internal stress of the stainless steel and reducing the occurrence of cracking. Finally, a cooling device cools the stainless steel to room temperature, which makes it easier to roll up and store. Attached Figure Description

[0038] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0039] Figure 1 A schematic diagram of a temperature control device used to improve the surface flatness of stainless steel.

[0040] Figure 2 This is another structural schematic diagram of a temperature control device used to improve the flatness of stainless steel surfaces.

[0041] Figure 3 This is another structural schematic diagram of a temperature control device used to improve the flatness of stainless steel surfaces.

[0042] Figure 4 This is another structural schematic diagram of a temperature control device used to improve the flatness of stainless steel surfaces.

[0043] Figure 5 This is a schematic diagram of the coating equipment.

[0044] Figure 6 A flowchart of a method for improving the surface flatness of stainless steel in a temperature control device;

[0045] Explanation of reference numerals in the attached figures:

[0046] A temperature control device 1 for improving the surface flatness of stainless steel includes a heating and pressurizing mechanism 2, a hot pressing unit 21, a first opening 211, a gap 212, a housing 213, a chamber 214, a heating component 215, a support unit 22, a temperature control mechanism 3, a temperature control heating plate 31, a gap 32, a second opening 33, a temperature control heating chamber 34, a temperature control roller 35, a cooling mechanism 4, a cooling plate 41, a gap 42, a cooling roller 43, stainless steel 5, a power generation film 51, a coating equipment 6, an unwinding mechanism 61, a substrate heating plate 62, and a winding mechanism 63. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0049] Because stainless steel coils are subjected to high temperatures and tension during the coating process, wrinkles and warping easily occur on the surface of the coils under high-temperature stretching, failing to meet the flatness requirements of the coating equipment. To address these issues, such as... Figure 1 As shown in the figure, this application provides a temperature control device 1 for improving the surface flatness of stainless steel, including: a control mechanism, a heating and pressurizing mechanism 2, a temperature control mechanism 3, and a cooling mechanism 4; the heating and pressurizing mechanism 2 is used to heat and pressurize stainless steel 5 with a power-generating film; the temperature control mechanism 3 is used to slowly cool down the heated and pressurized stainless steel 5; the cooling mechanism 4 is used to cool down the slowly cooling stainless steel 5; the control mechanism is connected to the heating and pressurizing mechanism 2, the temperature control mechanism 3, and the cooling mechanism 4, and the control mechanism is used to control the temperature and pressure of the heating and pressurizing mechanism 2, the temperature and pressure of the temperature control mechanism 3, and the temperature of the cooling mechanism 4.

[0050] The heating and pressurizing mechanism 2 often adopts the following structures: such as Figure 1 As shown, (1) the heating and pressurizing mechanism 2 includes a hot pressing unit 21 and a support unit 22, which are symmetrically arranged on the upper and lower sides of the stainless steel 5. With the above structure, the support unit 22 is used to support the stainless steel 5, and the hot pressing unit 22 is used to heat and press the stainless steel set on the support unit 22 to iron out the wrinkles and warps on the surface of the stainless steel 5. (2) As Figure 3As shown, the heating and pressurizing mechanism 2 includes two symmetrically arranged hot pressing units 21 on both sides of the stainless steel 5. The hot pressing units 21 are connected to the control mechanism. With the above structure, the hot pressing units 21 replace the support units 22 used in the first scheme. The hot pressing units 21 can not only support the stainless steel 5, but also cooperate with the hot pressing units 21 on the surface of the stainless steel 5 to heat and pressurize the stainless steel, thereby smoothing out wrinkles and warping on the surface of the stainless steel 5. Since the two symmetrical hot pressing units 21 heat and pressurize the stainless steel 5 at the same time, compared with setting the hot pressing unit only on the side of the stainless steel with the power generation film, the stainless steel can heat up faster, the temperature acting on the stainless steel is more uniform, and the generated hot pressure is greater, which can smooth out wrinkles and warping on the surface of the stainless steel 5 more quickly and rapidly.

[0051] like Figure 1 As shown, the hot pressing unit 21 includes a first opening 211 located near the stainless steel 5, and has a connection with the stainless steel 5 as shown in the figure. Figure 2 The shell 213 of the slit 212 shown has a chamber 214 inside, and a heating element 215 is provided on the inner wall of the chamber 214 on the side opposite to the first opening 211. With this structure, the heating element 215 inside the shell 213 achieves uniform heating of the stainless steel 5, and the stainless steel 5 and the shell 213 have a... Figure 2 The gap 212 shown prevents the hot pressing unit 21 from contacting the power generation film 51 on the surface of the stainless steel 5. Therefore, the high temperature will not damage the power generation film 51. In this embodiment, the hot pressing unit 21 not only achieves the purpose of ironing out wrinkles and warping on the surface of the stainless steel 5, but also effectively prevents damage to the coating when the hot pressing unit 21 contacts the power generation film 51. The design is more scientific and improves the quality of the stainless steel 5 product.

[0052] like Figure 1As shown, the support unit 22 is a heating plate. In this embodiment, the heating plate is a vacuum heating plate with at least one suction hole. Because the heating plate has better flatness, the stainless steel 5 can be laid flat on the heating plate, avoiding secondary bending caused by uneven external surfaces during heating and pressurization. Furthermore, the heating plate can contact the non-coated side of the stainless steel 5, resulting in a large contact area and better support for the stainless steel 5. During contact, the heat from the heating plate can be quickly transferred to the stainless steel 5, facilitating rapid heating. Further, this embodiment uses a vacuum heating plate with at least one suction hole on its surface. Since the vacuum heating plate is located on the bottom side of the stainless steel, it exerts a downward suction force on the stainless steel 5 through the suction hole. The housing 213 is located on top of the stainless steel 3, and the hot-pressing unit 21 generates downward pressure on the upper surface of the stainless steel 3. Therefore, after the hot-pressing unit 21 and the vacuum heating plate work together, a pressure difference is generated. This pressure difference acts on the surface of the stainless steel 5 on the side of the power generation film 51, smoothing out wrinkles and warping on the surface of the stainless steel 5.

[0053] Since the stainless steel 5 is in a vacuum environment during coating, and the chamber 214 is also in a vacuum environment with very low pressure, the chamber 214 in this embodiment is a vacuum chamber filled with inert gas, which provides pressure to the stainless steel 5. The inert gas can accelerate the conduction of temperature within the vacuum chamber.

[0054] like Figure 1 As shown, in this embodiment of the application, a pressure detection unit is provided on the inner wall of the housing 213. The pressure detection unit detects the pressure in the chamber 214 in real time and feeds the pressure value back to the control mechanism. The control mechanism controls the flow rate of inert gas according to the pressure value to ensure that the pressure of the chamber 214 acting on the stainless steel 5 is controlled between 200-600N. The conversion of the pressure in the chamber 214 is based on the area of ​​the chamber 214 covering the stainless steel 5 and is then controlled by formula conversion.

[0055] In this embodiment, the gap 212 can be set to 3-10mm. If the gap 212 is too small, it will be difficult for stainless steel to pass through. If the gap 212 is too large, it will be difficult for the heat conduction of the hot pressing unit 21. At the same time, if the gap 212 is too large, too much inert gas will be emitted from the shell 213, which will waste resources and will also be detrimental to heat conduction.

[0056] like Figure 1As shown, the heating assembly 215 can adopt the following structures: (1) The heating assembly 215 includes at least one LED light that is evenly distributed on the inner wall of the chamber 214; the evenly distributed LED light has dual functions of lighting and heating, which is beneficial for nighttime operation and easy to observe the stainless steel surface. (2) The heating assembly 215 is a resistance wire heating element; the resistance wire heating element has the characteristics of low cost.

[0057] The temperature control mechanism 3 can adopt the following structures: (1) such as Figure 1 As shown, the temperature control mechanism 3 includes a temperature control heating plate 31 disposed on one side of the stainless steel 5 and in contact with the surface of the stainless steel 5; since there is only one temperature control heating plate 31, the temperature control heating plate 31 can be placed on the side of the stainless steel 5 with coating or on the side of the stainless steel 5 away from the coating, both of which can play a cooling role for the temperature control heating plate 31; however, the temperature control heating plate 31 is usually disposed on the lower surface of the stainless steel on the uncoated side to avoid damage to the coating. (2) The temperature control mechanism 3 includes two temperature control heating plates 31 symmetrically disposed on both sides of the stainless steel 5 and in contact with the surface of the stainless steel 5. Since the two symmetrical temperature control heating plates 31 simultaneously and slowly cool the stainless steel 5, compared with only disposing of the temperature control heating plate 31 on one side of the stainless steel 5, the stainless steel 5 can be heated more evenly, and the stainless steel 5 can be cooled more evenly. (3) The temperature control mechanism 3 includes a temperature control heating plate 31 disposed on one side of the stainless steel 5 and having a gap 32 with the surface of the stainless steel 5. This arrangement prevents the stainless steel 5 from directly contacting the temperature-controlled heating plate 31. Since the temperature-controlled heating plate 31 is a single plate, it can be placed on the side of the stainless steel 5 with the coating or on the side of the stainless steel 5 opposite to the coating. Both placements can cool the temperature-controlled heating plate 31. If placed on the side of the power-generating film 51 of the stainless steel 5, the power-generating film 51 of the stainless steel 5 will not be damaged. (4) Figure 2 As shown, the temperature control mechanism 3 includes two temperature control heating plates 31 symmetrically arranged on both sides of the stainless steel 5, each with a gap 32 between it and the surface of the stainless steel 5. This arrangement prevents the stainless steel 5 from directly contacting the temperature control heating plates 31, thus avoiding damage to the power generation film 51 of the stainless steel 5. Since the two symmetrical temperature control heating plates 31 simultaneously and slowly cool the stainless steel 5, compared to setting the temperature control heating plate 31 on only one side of the stainless steel 5, the stainless steel 5 can be heated more evenly, and the temperature can be cooled more evenly. (5) The temperature control mechanism 3 includes a temperature control heating cavity 34 with a second opening 33 near the side of the stainless steel 5 and a gap 32 between it and the surface of the stainless steel 5. (6) As Figure 3 As shown, the temperature control mechanism 3 includes two temperature-controlled heating chambers 34 symmetrically arranged on both sides of the stainless steel 5, with a second opening 33 on the side closer to the stainless steel 5, and both having a gap 32 between them and the surface of the stainless steel 5. The temperature-controlled heating chambers 34 can provide a good sealed cooling environment for the stainless steel 5, and can concentrate heat on the surface of the stainless steel 5, reducing heat dissipation. (7) As Figure 4 As shown, the temperature control mechanism 3 includes at least two temperature control rollers 35 symmetrically arranged on both sides of the stainless steel 5. The temperature of the temperature control rollers 35 arranged on one side of the stainless steel 5 decreases at a uniform gradient along the direction from the heating and pressurizing mechanism 2 to the cooling mechanism 4. By providing temperature control rollers with a gradient decrease, the stainless steel 5 is slowly cooled, so that the temperature of the stainless steel 5 can be reduced uniformly and slowly.

[0058] like Figure 3 As shown, in this embodiment, the space between the temperature-controlled heating plate 31 and the temperature-controlled heating cavity 34 is filled with heating oil at 100-400°C; and heating oil at 100-900°C is provided in the temperature-controlled roller 35 along the direction from the heating and pressurizing mechanism 2 to the cooling mechanism 4.

[0059] In this embodiment of the application, in order to maintain the temperature of the temperature-controlled heating plate 31, the temperature-controlled heating cavity 34, or the temperature-controlled roller 35 uniformly between 100-400℃, both an inlet and an outlet for heating oil are provided on the temperature-controlled heating plate 31, the temperature-controlled heating cavity 34, or the temperature-controlled roller 35. This ensures that the heating oil is constantly flowing within the temperature-controlled heating plate 31, the temperature-controlled heating cavity 34, or the temperature-controlled roller 35. Since the temperature of the heating oil flowing in during each operation is constant, the temperature-controlled heating plate 31, the temperature-controlled heating cavity 34, or the temperature-controlled roller 35 can provide a stable temperature for the stainless steel 5 with very small temperature differences.

[0060] Cooling mechanism 4 often adopts the following types of mechanisms: (1) such as Figure 1 As shown, the cooling mechanism 4 includes a cooling plate 41 disposed on one side of the stainless steel 5, but not exerting force on the stainless steel 5. (2) The cooling mechanism 4 includes two cooling plates 41 symmetrically disposed on both sides of the stainless steel 5, but not exerting force on the stainless steel 5. (3) The cooling mechanism 4 includes a cooling plate 41 disposed on one side of the stainless steel 5 and having a gap 42 with the surface of the stainless steel 5. (4) As shown Figure 2 As shown, the cooling mechanism 4 includes two cooling plates 41 symmetrically arranged on both sides of the stainless steel 5, each having a gap 42 between it and the surface of the stainless steel 5. (5) As Figure 3 and Figure 4As shown, the cooling mechanism 4 includes two cooling rollers 43 symmetrically arranged on both sides of the stainless steel 5, but without applying force to the stainless steel 5. The cooling mechanism 4 can be made of steel plate. The cooling plate 41 and the cooling rollers 43 are filled with coolant. One end of the cooling plate 41 is provided with a liquid inlet connected to a liquid inlet pipe, and the other end is provided with a liquid outlet connected to a liquid outlet pipe. The coolant is introduced into the cooling plate 41 or cooling rollers 43 through the liquid inlet pipe and flows out through the liquid outlet, ensuring that the coolant is circulating. Since the liquid inlet temperature is constant, the cooling plate 41 or cooling rollers 43 can provide a stable temperature for the stainless steel 5 with a very small temperature difference. Through contact cooling, excess heat on the stainless steel 5 is quickly removed, allowing the stainless steel 5 to meet the winding requirements.

[0061] like Figure 5 As shown, a coating equipment includes any of the temperature control devices described in the above embodiments for improving the surface flatness of stainless steel.

[0062] like Figure 5 As shown, the coating equipment 6 in this embodiment of the application further includes an unwinding mechanism 61, a substrate heating plate 62, and a winding mechanism 63. The unwinding mechanism 61, the substrate heating plate 62, and the winding mechanism 63 are all connected to the control mechanism. The unwinding mechanism 61 is used to hold the stainless steel roll, and the winding mechanism 63 is used to wind the stainless steel 5, which has been ironed by the temperature control device 1, onto the winding mechanism 63. The substrate heating plate 62 and the heating and pressurizing mechanism 2, the temperature control mechanism 3, and the cooling mechanism 4 in the temperature control device 1 are sequentially arranged on the stainless steel 5 between the unwinding mechanism 61 and the winding mechanism 63.

[0063] like Figure 6 As shown in the embodiment of this application, a method for improving the surface flatness of stainless steel using the aforementioned temperature control device is provided, comprising:

[0064] S01, the stainless steel 5 with the power-generating film 51 is heated and pressurized, specifically as follows:

[0065] The stainless steel 5, on which the power-generating film 51 is provided, is heated and pressurized by the heating and pressurizing mechanism 2 described above.

[0066] S02, the stainless steel 5 after heating and pressurization is slowly cooled down, specifically as follows:

[0067] The stainless steel 5, after being heated and pressurized, is slowly cooled by the temperature control mechanism 3 described above.

[0068] S03, the slowly cooling stainless steel 5 is cooled down, specifically as follows:

[0069] The slow-cooling stainless steel 5 is cooled by the cooling mechanism 4.

[0070] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.

[0071] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A temperature control device for improving the surface flatness of stainless steel, characterized in that, include: Control mechanism, heating and pressurizing mechanism, temperature control mechanism, and cooling mechanism; The heating and pressurizing mechanism is used to heat and pressurize stainless steel with a power-generating film. The temperature control mechanism is used to slowly cool down the stainless steel after it has been heated and pressurized; The cooling mechanism is used to cool down the slowly cooling stainless steel. The control mechanism is connected to the heating and pressurizing mechanism, the temperature control mechanism, and the cooling mechanism. The control mechanism is used to control the temperature and pressure of the heating and pressurizing mechanism, the temperature of the temperature control mechanism, and the temperature of the cooling mechanism. The heating and pressurizing mechanism includes a hot-pressing unit and a supporting unit, wherein the hot-pressing unit and the supporting unit are symmetrically arranged on two opposite upper and lower surfaces of the stainless steel; or The heating and pressurizing mechanism includes two hot pressing units symmetrically arranged on the upper and lower opposite surfaces of the stainless steel. The hot pressing unit includes a housing with a first opening on the side near the stainless steel and a gap with the stainless steel. A chamber is provided inside the housing, and a heating component is provided on the inner wall of the chamber on the side opposite to the first opening. The support unit is a heating plate; The chamber is a vacuum chamber filled with inert gas, and the heating plate is a vacuum heating plate with at least one air intake hole. The heating assembly includes at least one LED light evenly distributed on the inner wall of the cavity; or The heating component is a resistance wire heating element; The temperature control mechanism includes a temperature-controlled heating plate disposed on one side of the stainless steel and in contact with the stainless steel; or The temperature control mechanism includes two temperature-control heating plates symmetrically arranged on both sides of the stainless steel and in contact with the stainless steel; or The temperature control mechanism includes a temperature-controlled heating plate disposed on one side of the stainless steel and having a gap with the surface of the stainless steel; or The temperature control mechanism includes two temperature-controlling heating plates symmetrically arranged on both sides of the stainless steel, each having a gap with the surface of the stainless steel; or The temperature control mechanism includes a temperature-controlled heating cavity with a second opening near the stainless steel side and a gap between it and the stainless steel surface; or The temperature control mechanism includes two temperature-controlled heating chambers symmetrically arranged on both sides of the stainless steel, with a second opening near the stainless steel side, and both having gaps with the surface of the stainless steel; or the temperature control mechanism includes at least two temperature-controlled rollers symmetrically arranged on both sides of the stainless steel, with the temperature of the temperature-controlled rollers arranged on the stainless steel side along the direction from the heating and pressurizing mechanism to the cooling mechanism decreasing at an equal gradient.

2. The temperature control device for improving the surface flatness of stainless steel according to claim 1, characterized in that, The temperature control mechanism is filled with heating oil at 100-900℃.

3. The temperature control device for improving the surface flatness of stainless steel according to claim 1, characterized in that, The cooling mechanism includes a cooling plate disposed on one side of the stainless steel, but which does not exert force on the stainless steel; or The cooling mechanism includes two cooling plates symmetrically arranged on both sides of the stainless steel, but which do not exert any force on the stainless steel; or The cooling mechanism includes a cooling plate disposed on one side of the stainless steel and having a gap with the surface of the stainless steel; or The cooling mechanism includes two cooling plates symmetrically arranged on both sides of the stainless steel, each having a gap with the surface of the stainless steel; The cooling mechanism includes two cooling rollers symmetrically arranged on both sides of the stainless steel, but which do not exert force on the stainless steel.

4. The temperature control device for improving the surface flatness of stainless steel according to claim 1, characterized in that, The cooling mechanism is filled with coolant.

5. A coating apparatus, characterized in that, Including the temperature control device for improving the surface flatness of stainless steel as described in any one of claims 1 to 4.

6. A method for improving the surface flatness of stainless steel using the temperature control device according to any one of claims 1 to 4, characterized in that, include: Stainless steel with a power-generating film is heated and pressurized; The stainless steel, after being heated and pressurized, is then slowly cooled down. The stainless steel, which is slowly cooling down, is then cooled.

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