Color printing of switchgear parts
By applying a color coating on the metal walls and conductor surfaces of the switching equipment using a printing press, the problem of time-consuming and costly heat dissipation in the prior art is solved, and efficient heat loss enhancement and cost reduction are achieved.
Patent Information
- Application Number
- CN202510008911.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-01-05
- Filing Date
- 2025-01-03
- Publication Date
- 2025-07-08
AI Technical Summary
The heat dissipation process of existing switching devices is time-consuming and expensive, and requires manual shielding and testing of seal integrity.
The metal walls and conductor surfaces of the switchgear are applied with a color coating, especially stainless steel sheets and copper busbars, on which the coating is pre-programmed by the printer to enhance radiation emissivity and avoid manual shielding and painting processes.
The heat dissipation process is simplified, the heat loss capability of the switching equipment is improved, the cost is reduced, and it can be completed indoors, and the coating can be applied in different colors as needed.
Smart Images
Figure CN120280814A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a metal wall of a switchgear compartment with a printed color coating (coloring coating), a metal conductor of a switchgear with a printed color coating, a method for treating a metal wall of a switchgear compartment, a method for treating a metal conductor of a switchgear, and a switchgear. Background Art
[0002] Switchgear needs to dissipate heat, which can be achieved by using wet paint to increase the emissivity of the surface of parts - which can then radiate energy from the switchgear.
[0003] For the metal walls that form the walls of the switchgear compartment, these walls are first welded together to form a compartment, and then the parts inside the compartment that are not allowed to be painted, such as welded seals and studs, are manually masked, and then the walls are painted.
[0004] The processes of masking and painting are very time-consuming and costly, and the seals are tested before and after painting to verify the integrity of the seals.
[0005] It is necessary to solve these problems.
[0006] There is a need to improve the way of enhancing the heat dissipation effect of the switchgear. Summary of the Invention
[0007] Therefore, it is advantageous to improve the heat dissipation capacity of the switchgear.
[0008] The object of the present invention is solved by the subject matter of the independent claims, wherein further embodiments are incorporated into the dependent claims.
[0009] In a first aspect, there is provided a metal wall (60) for a compartment (20, 30, 40, 50) of a switchgear (100). The metal wall comprises a stainless steel sheet. At least a part of the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the compartment of the switchgear has a coloring coating. The coloring coating is applied by a printing press.
[0010] Before welding the metal shields to form a compartment, an appropriate coloring coating can be printed on the surface of the compartment wall (such as a flat side wall) of the switchgear, and the wall is a metal sheet made of stainless steel. Then, the compartment can have an appropriate color facing outward to enhance the radiative emission of the switchgear, thereby enhancing cooling. The whole process of achieving this ability to diffuse energy from the switchgear is greatly simplified compared to the existing process, because the design can be pre-programmed, and now the manual masking process required for painting is not needed, and this process can be completed indoors and different colors can be applied as needed.
[0011] In one example, at least a portion of the surface of the stainless-steel sheet of the metal wall that faces inward when the metal wall forms a compartment of the switching device has a colored coating; and wherein the colored coating has been applied by a printing press.
[0012] By printing the surface of the wall of the switching device compartment that faces inward a certain color, such as black, the wall absorbs heat from the internal parts of the switching device that are hotter than the wall. The wall also has a printed surface that faces outward, which enhances the energy emission of the switching device, resulting in an overall increase in the heat loss of the switching device.
[0013] In one example, the stainless-steel sheet includes at least one hole, and wherein the surface of the stainless-steel sheet of the metal wall that faces outward (i.e., the perimeter of one or more of the at least one hole) when the metal wall forms a compartment of the switching device does not have a colored coating.
[0014] Therefore, the printing press can be programmed to print at a certain distance from the holes in the stainless-steel metal sheet, so that the connector can be used in an effective manner with the bare metal, and this means that the whole process becomes more efficient and cost-effective.
[0015] In one example, the surface of the stainless-steel sheet of the metal wall that faces inward (i.e., the perimeter of one or more of the at least one hole) when the metal wall forms a compartment of the switching device does not have a colored coating.
[0016] In one example, the surface of the stainless-steel sheet of the metal wall that faces outward (at one or more outer perimeters of the stainless-steel sheet) when the metal wall forms a compartment of the switching device does not have a colored coating.
[0017] Therefore, the printing press can be programmed to print at a certain distance from the edge of the stainless-steel metal sheet, so that the metal sheets can be welded together in an effective manner, where bare metal to bare metal is required for welding integrity, and this means that the whole process becomes more efficient and cost-effective.
[0018] In one example, the surface of the stainless-steel sheet of the metal wall that faces inward (at one or more outer perimeters of the stainless-steel sheet) when the metal wall forms a compartment of the switching device does not have a colored coating.
[0019] In one example, the colored coating on the surface of the stainless-steel sheet of the metal wall that faces outward when the metal wall forms a compartment of the switching device contains ink.
[0020] In one example, the colored coating on the surface of the stainless-steel sheet of the metal wall that faces inward when the metal wall forms a compartment of the switching device contains ink.
[0021] In one example, the coloring coating on the surface of the stainless-steel sheet of the metal wall that faces outward when the metal wall forms the switchgear compartment is configured to have a high emissivity.
[0022] In one example, the coloring coating on the surface of the stainless-steel sheet of the metal wall that faces inward when the metal wall forms the switchgear compartment is configured to have a high emissivity.
[0023] In one example, the coloring coating is, for example, a coloring coating of the following colors: black, gray, white. Other colors can also be used.
[0024] Therefore, the coloring coating can be the ink printed by a printing press and can be an appropriate color as needed, such as black, gray or white, where black is the most effective blackbody emitter, but the white surface still has an increased emissivity compared to the bare metal surface, and the parts can be colored as needed.
[0025] In a second aspect, a metal conductor (1, 2) for a switchgear (100) is provided. The metal conductor includes a copper busbar. At least a part of the surface of the copper busbar has a coloring coating. The coloring coating has been applied by a printing press.
[0026] Therefore, the copper busbar of the switchgear that becomes very hot due to Joule heating can be printed with an appropriate coloring coating on its surface to increase the radiative heat emission of the busbar, thereby cooling the busbar. The whole process of achieving this diffusion energy ability is greatly simplified compared to the existing process because the design can be programmed in advance, and by programming the printing press, the parts that should not have the coating can be easily left bare. Now, manual masking required for painting is not needed, and the process can be completed indoors and different colors can be applied as needed.
[0027] In one example, the copper busbar includes at least one hole, and the surface that is the perimeter of one or more of the at least one hole in the copper busbar does not have a coloring coating.
[0028] In one example, the surface of the copper busbar at the end of the copper busbar does not have a coloring coating.
[0029] In one example, the coloring coating on the surface of the copper busbar contains ink.
[0030] In one example, the coloring coating on the surface of the copper busbar is configured to have a high emissivity.
[0031] In one example, the coloring coating is, for example, one of black, gray, white. Other colors can also be used.
[0032] In a third aspect, a method for treating a metal wall (60) of a compartment (20, 30, 40, 50) of a switching device (100) is provided, wherein the metal wall comprises a stainless steel sheet, and the method comprises:
[0033] - Applying a coloring coating to at least a part of the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the switching device compartment by means of a printing press.
[0034] In one example, the method comprises:
[0035] - Applying a coloring coating to at least a part of the surface of the stainless steel sheet of the metal wall that faces inward when the metal wall forms the switching device compartment by means of a printing press.
[0036] In one example, the stainless steel sheet comprises at least one hole, and wherein the method comprises:
[0037] - Not applying a coloring coating to the periphery of one or more holes in at least one hole of the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the switching device compartment by means of a printing press.
[0038] In one example, the stainless steel sheet comprises at least one hole, and wherein the method comprises:
[0039] - Not applying a coloring coating to the periphery of one or more holes in at least one hole of the surface of the stainless steel sheet of the metal wall that faces inward when the metal wall forms the switching device compartment by means of a printing press.
[0040] In one example, the method comprises:
[0041] - Not applying a coloring coating to one or more outer peripheries of the stainless steel sheet of the surface of the metal wall that faces outward when the metal wall forms the switching device compartment by means of a printing press.
[0042] In one example, the method comprises:
[0043] - Not applying a coloring coating to one or more outer peripheries of the stainless steel sheet of the surface of the metal wall that faces inward when the metal wall forms the switching device compartment by means of a printing press.
[0044] In one example, the coloring coating on the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the switching device compartment contains ink.
[0045] In one example, the coloring coating on the surface of the stainless steel sheet of the metal wall that faces inward when the metal wall forms the switching device compartment contains ink.
[0046] In one example, the coloring coating on the surface of the stainless-steel sheet of the metal wall that faces outward when the metal wall forms the switchgear compartment is configured to have a high emissivity.
[0047] In one example, the coloring coating on the surface of the stainless-steel sheet of the metal wall that faces inward when the metal wall forms the switchgear compartment is configured to have a high emissivity.
[0048] In one example, the method includes: before printing, pretreating one or more surfaces of the stainless-steel sheet with a primer.
[0049] In one example, the method includes irradiating the coloring coating with ultraviolet light when printing the coloring coating and / or irradiating the coloring coating with ultraviolet light after the printing of the coloring coating is completed.
[0050] In one example, the coloring coating is, for example, a coloring coating of the following colors: black, gray, white. Other colors can also be used.
[0051] In a fourth aspect, a method for treating metal conductors (1, 2) of a switchgear (100) is provided, wherein the metal conductors include copper busbars, and wherein the method includes:
[0052] - Applying a coloring coating to at least a portion of the surface of the copper busbar by a printing press.
[0053] In one example, the copper busbar includes at least one hole, and wherein the method includes:
[0054] - Not applying a coloring coating to the periphery of one or more holes in at least one hole of the surface of the copper busbar by a printing press.
[0055] In one example, the method includes:
[0056] - Not applying a coloring coating to the surface of the copper busbar at one of its ends by a printing press.
[0057] In one example, the coloring coating on the surface of the copper busbar contains ink.
[0058] In one example, the coloring coating on the surface of the copper busbar is configured to have a high emissivity.
[0059] In one example, the method includes pretreating the surface of the copper busbar with a primer before printing.
[0060] In one example, the method includes irradiating the coloring coating with ultraviolet light when printing the coloring coating and / or irradiating the coloring coating with ultraviolet light after the printing of the coloring coating is completed.
[0061] In one example, the coloring coating is a coloring coating of, for example, the following colors: black, gray, white. Other colors may also be used.
[0062] In a fifth aspect, there is provided a switching device including a metal wall according to the first aspect.
[0063] In a sixth aspect, there is provided a switching device including a metal conductor according to the second aspect.
[0064] In a seventh aspect, there is provided a switching device including a metal wall processed by the method according to the third aspect.
[0065] In an eighth aspect, there is provided a switching device including a metal conductor processed by the method according to the fourth aspect.
[0066] The above aspects and examples will become apparent and be elucidated in accordance with the embodiments described below. Description of the Drawings
[0067] Exemplary embodiments will be described below with reference to the following drawings:
[0068] Figure 1 A schematic representation of a switching device 100 having a plurality of metal walls 60 is shown, wherein the metal walls 60 have a coloring coating applied by a printing press;
[0069] Figure 2 A detailed schematic representation of a switching device having a plurality of metal walls 60 and busbars 1 and 2 is shown, wherein the metal walls 60 have a coloring coating applied by a printing press, and the busbars 1 and 2 have a coloring coating applied by a printing press;
[0070] Figure 3 A graphical representation of a switching device 100 having a plurality of metal walls 60 is shown, wherein the metal walls 60 have a coloring coating applied by a printing press, and wherein the coating has not been printed at the periphery 80 of the holes in the metal walls and has not been printed at the edges 70 of the metal walls;
[0071] Figure 4 A detailed representation of compartments of a switching device (such as a circuit breaker compartment 20, a first busbar compartment 30, a second busbar compartment 40, a low-voltage compartment 50) is shown, the switching device having a plurality of metal walls 60, wherein the metal walls 60 have a coloring coating applied by a printing press, and wherein the coating has not been printed at the periphery 80 of the holes in the metal walls and has not been printed at the edges 70 of the metal walls; and
[0072] Figure 5Shows a detailed representation of compartments of a switchgear (such as a circuit breaker compartment 20, a first busbar compartment 30, a second busbar compartment 40, a low - voltage compartment 50), the switchgear having a plurality of metal walls 60, wherein the metal walls 60 have a colored coating applied by a printing press, and wherein the coating has not been printed at the perimeter 80 of the holes in the metal walls and has not been printed at the edges 70 of the metal walls. Detailed Description
[0073] Figures 1-5 Relates to a metal wall of a switchgear compartment having a printed colored coating, a metal conductor of a switchgear having a printed colored coating, a method for treating a metal wall of a switchgear compartment, a method for treating a metal conductor of a switchgear, and a switchgear.
[0074] Now describe exemplary metal walls 60 of compartments 20, 30, 40, 50 of a switchgear 100. The metal wall comprises a stainless - steel sheet. At least a portion of the surface of the stainless - steel sheet of the metal wall that faces outward when the metal wall forms a compartment of the switchgear has a colored coating. The colored coating is applied by a printing press.
[0075] Before welding the metal shields to form the compartment, an appropriate colored coating can be printed on the surface of the compartment wall (such as a flat sidewall) of the switchgear, the wall being a metal sheet made of stainless steel. Then, the compartment can have an appropriate color facing outward to enhance the radiation emission of the switchgear, thereby enhancing cooling. The entire process of achieving this ability to diffuse energy from the switchgear is greatly simplified compared to the existing process because the design can be pre - programmed, and now the manual masking process required for painting is not needed, the process can be done indoors, and different colors can be applied as needed.
[0076] In one example, at least a portion of the surface of the stainless - steel sheet of the metal wall that faces inward when the metal wall forms a compartment of the switchgear has a colored coating; and wherein the colored coating has been applied by a printing press.
[0077] By printing the surface of the switchgear compartment wall facing the inside with a certain color, such as black, the wall absorbs heat from the internal parts of the switchgear that are hotter than the wall. The wall also has a printed surface facing outward, which enhances the energy emission of the switchgear, resulting in an overall increase in the heat loss of the switchgear.
[0078] In one example, the stainless - steel sheet includes at least one hole, and wherein the surface of the stainless - steel sheet of the metal wall that faces outward when the metal wall forms a compartment of the switchgear (i.e., the perimeter of one or more of the at least one hole) does not have a colored coating.
[0079] Therefore, the printing press can be programmed to print at a certain distance from the holes in the stainless steel sheet, so that the connectors can be used to mate with the exposed metal in an effective manner, and this means that the whole process becomes more efficient and cost-effective.
[0080] In one example, the surface of the stainless steel sheet of the metal wall that faces inward when the metal wall forms the switchgear compartment (i.e., the perimeter of one or more of the at least one hole) does not have a coloring coating.
[0081] In one example, the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the switchgear compartment does not have a coloring coating at one or more outer perimeters of the stainless steel sheet.
[0082] Therefore, the printing press can be programmed to print at a certain distance from the edge of the stainless steel sheet, so that the metal sheets can be welded together in an effective manner, where bare metal to bare metal is required for welding integrity, and this means that the whole process becomes more efficient and cost-effective.
[0083] In one example, the surface of the stainless steel sheet of the metal wall that faces inward when the metal wall forms the switchgear compartment does not have a coloring coating at one or more outer perimeters of the stainless steel sheet.
[0084] In one example, the coloring coating on the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the switchgear compartment contains ink.
[0085] In one example, the coloring coating on the surface of the stainless steel sheet of the metal wall that faces inward when the metal wall forms the switchgear compartment contains ink.
[0086] In one example, the coloring coating on the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the switchgear compartment is configured to have a high emissivity.
[0087] In one example, the coloring coating on the surface of the stainless steel sheet of the metal wall that faces inward when the metal wall forms the switchgear compartment is configured to have a high emissivity.
[0088] In one example, the coloring coating is, for example, a coloring coating of the following colors: black, gray, white. Other colors can also be used.
[0089] Therefore, the coloring coating can be the ink printed by the printing press and can be an appropriate color as needed, such as black, gray or white, where black is the most effective blackbody emitter, but the white surface still has an improved emissivity compared to the bare metal surface, and the parts can be colored as needed.
[0090] Now, an example of metal conductors 1 and 2 for a switching device 100 will be described. The metal conductors include copper busbars. At least a part of the surface of the copper busbars has a colored coating. The colored coating has been applied by a printing machine.
[0091] Therefore, the copper busbars of the switching device that become very hot due to Joule heating can have an appropriate colored coating printed on their surfaces to increase the radiant heat emission of the busbars, thereby cooling the busbars. The entire process of achieving this diffusion energy ability is greatly simplified compared to the existing process because the design can be programmed in advance, and by programming the printing machine, parts that should not have a coating can be easily left exposed. Now, manual masking required for painting is not needed, and the process can be completed indoors and different colors can be applied as needed.
[0092] It should be noted that the metal conductors can be other parts of the switching device, such as parts of a two-position switch or a three-position switch or parts of a circuit breaker, such as rods, and for all these parts, a colored coating can be applied to the surface by a printing machine in the same manner as discussed for the copper busbars.
[0093] In one example, the copper busbar includes at least one hole, and the surface that is the perimeter of one or more of the at least one hole in the copper busbar does not have a colored coating.
[0094] In one example, the surface of the copper busbar at the end of the copper busbar does not have a colored coating.
[0095] In one example, the colored coating on the surface of the copper busbar contains ink.
[0096] In one example, the colored coating on the surface of the copper busbar is configured to have a high emissivity.
[0097] In one example, the colored coating is, for example, one of black, gray, and white. Other colors can also be used.
[0098] Now, a method for treating the metal wall 60 of the compartments 20, 30, 40, 50 of the switching device 100 will be described, where the metal wall includes stainless steel sheets, and the method includes:
[0099] - Applying a colored coating to at least a part of the surface of the stainless steel sheet of the metal wall that faces the outside when the metal wall forms the switching device compartment by a printing machine.
[0100] In one example, the method includes:
[0101] - Applying a colored coating to at least a part of the surface of the stainless steel sheet of the metal wall that faces the inside when the metal wall forms the switching device compartment by a printing machine.
[0102] In one example, the stainless - steel sheet includes at least one hole, and wherein the method includes:
[0103] - Applying a colored coating to the periphery of one or more of the at least one hole in the surface of the stainless - steel sheet of the metal wall that faces outward when forming the switchgear compartment in the metal wall, without using a printing press.
[0104] In one example, the stainless - steel sheet includes at least one hole, and wherein the method includes:
[0105] - Applying a colored coating to the periphery of one or more of the at least one hole in the surface of the stainless - steel sheet of the metal wall that faces inward when forming the switchgear compartment in the metal wall, without using a printing press.
[0106] In one example, the method includes:
[0107] - Applying a colored coating to one or more outer peripheries of the stainless - steel sheet of the metal wall that faces outward when forming the switchgear compartment in the metal wall, without using a printing press.
[0108] In one example, the method includes:
[0109] - Applying a colored coating to one or more outer peripheries of the stainless - steel sheet of the metal wall that faces inward when forming the switchgear compartment in the metal wall, without using a printing press.
[0110] In one example, the colored coating on the surface of the stainless - steel sheet of the metal wall that faces outward when forming the switchgear compartment in the metal wall contains ink.
[0111] In one example, the colored coating on the surface of the stainless - steel sheet of the metal wall that faces inward when forming the switchgear compartment in the metal wall contains ink.
[0112] In one example, the colored coating on the surface of the stainless - steel sheet of the metal wall that faces outward when forming the switchgear compartment in the metal wall is configured to have a high emissivity.
[0113] In one example, the colored coating on the surface of the stainless - steel sheet of the metal wall that faces inward when forming the switchgear compartment in the metal wall is configured to have a high emissivity.
[0114] In one example, the method includes: Before printing, pretreating one or more surfaces of the stainless - steel sheet with a primer.
[0115] In one example, the method includes irradiating the colored coating with ultraviolet light when printing the colored coating and / or irradiating the colored coating with ultraviolet light after the printing of the colored coating is completed.
[0116] In one example, the coloring coating is a coloring coating of, for example, the following colors: black, gray, white. Other colors may also be used.
[0117] A method for processing the metal conductors 1, 2 of the switching device 100 is now described, where the metal conductors include copper busbars, and where the method includes:
[0118] - Applying a coloring coating to at least a portion of the surface of the copper busbar by a printing press.
[0119] In one example, the copper busbar includes at least one hole, and where the method includes;
[0120] - Not applying a coloring coating to the periphery of one or more of the at least one hole in the surface of the copper busbar by a printing press.
[0121] In one example, the method includes:
[0122] - Not applying a coloring coating to the surface of the copper busbar at one of its ends by a printing press.
[0123] In one example, the coloring coating on the surface of the copper busbar contains ink.
[0124] In one example, the coloring coating on the surface of the copper busbar is configured to have a high emissivity.
[0125] In one example, the method includes pretreating the surface of the copper busbar with a primer before printing.
[0126] In one example, the method includes irradiating the coloring coating with ultraviolet light when printing the coloring coating and / or irradiating the coloring coating with ultraviolet light after the coloring coating printing is completed.
[0127] In one example, the coloring coating is a coloring coating of, for example, the following colors: black, gray, white. Other colors may also be used.
[0128] It should be noted that the switching device may have a metal wall with a coloring coating applied as described above.
[0129] It should be noted that the switching device may have a metal conductor with a coloring coating applied as described above.
[0130] Accordingly, the inventors have recognized that a large-scale injection printing machine can be used to print a colored coating onto the side walls of the metal sheet of a switchgear compartment, and this coating is used to construct the enclosure of the switchgear panel when welded together. The colored coating enhances the thermal radiation of the switchgear. By appropriately programming the printing machine, key areas (such as the panels to be welded and the areas around the holes that will form the seals) can be left uncoated. The entire process is very fast, avoiding additional manual work and certain sealing tests, and the whole process can be completed indoors. This process allows for the application of different types of colors, ranging from black, which provides the most effective blackbody emission, to white, which provides visibility, and even red, which is used to indicate danger. It has been demonstrated that the thermal radiation performance of a switchgear with a stainless steel wall of a metal sheet printed with a colored coating in this way is comparable to the thermal performance achieved by currently using expensive and time-consuming wet paint techniques.
[0131] The printing process of the colored coating is briefly outlined below:
[0132] - Place the metal part to be printed (such as a metal sheet part) on the printing machine base
[0133] - Pretreat the metal part with a primer, such as isopropyl alcohol, a chemical primer, or pretreatment with a primer by pyrolysis (flame)
[0134] - Load the printing programs of all parties into the printing software
[0135] - Start the printing process
[0136] - The ink used can be ultraviolet-activated ink. After the ink is deposited on the part from the printing head in the form of wet ink, ultraviolet light is used to irradiate the ink to activate and dry the ink
[0137] The thickness of the ink layer can range from microns to millimeters.
[0138] All types of metal parts of the switchgear can be printed in this way, ranging from the colored coating on a stainless steel sheet to the colored coating on conductors such as copper busbars.
[0139] A variety of different printing machines can be used, such as but not limited to:
[0140] Jetrix1212
[0141] Mimaki JFX200 2513EX
[0142] Mimaki UJF-7151PLUS
[0143] swissqprint Impala 4
[0144] Reference numerals
[0145] 1 Busbar 1
[0146] 2 Busbar 2
[0147] 3 Double - position disconnector
[0148] 4 Three - position disconnector
[0149] 5 Circuit breaker
[0150] 6 Three - position disconnector
[0151] 7 Current transformer
[0152] 8 Earthing switch
[0153] 9 Plug - in connector
[0154] 10 Gas compartment for busbar compartment
[0155] 20 Circuit breaker compartment
[0156] 30 Busbar compartment 1
[0157] 40 Busbar compartment 2
[0158] 50 Low - voltage compartment
[0159] 60 Compartment wall
[0160] 70 Unpainted seam around connector hole
[0161] 80 Unpainted seam around edge of metal sheet
[0162] 100 Switchgear
Claims
1. A metal wall (60) of a compartment (20, 30, 40, 50) of a switching device (100); Among them, The metal wall comprises a stainless steel sheet; Wherein, at least a part of the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the compartment of the switching device has a coloring coating; and Wherein, the coloring coating has been applied by a printing machine.
2. The metal wall according to claim 1, wherein, At least a part of the surface of the stainless steel sheet of the metal wall that faces inward when the metal wall forms the compartment of the switching device has a coloring coating; and wherein, the coloring coating has been applied by the printing machine.
3. The metal wall according to any one of claims 1-2, wherein, The stainless steel sheet comprises at least one hole, and wherein, the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the compartment of the switching device does not have the coloring coating at the periphery of one or more of the at least one hole.
4. The metal wall according to any one of claims 1-3, wherein The surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the compartment of the switching device does not have the coloring coating at one or more outer peripheries of the stainless steel sheet.
5. The metal wall according to any one of claims 1-4, wherein, The coloring coating on the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the compartment of the switching device contains ink.
6. The metal wall according to any one of claims 1 to 5, wherein, The coloring coating on the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the compartment of the switching device is configured to have a high emissivity.
7. A metal conductor (1, 2) for a switching device (100); Among them, The metal conductor comprises a copper busbar; Wherein, at least a part of the surface of the copper busbar has a coloring coating; and Wherein, the coloring coating has been applied by a printing machine.
8. A method for treating a metal wall (60) of a compartment (20, 30, 40, 50) of a switchgear (100), wherein, The metal wall comprises a stainless steel sheet, and wherein the method comprises: - Applying a coloring coating to at least a part of the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the compartment of the switching device by a printing machine.
9. The method according to claim 8, wherein the method comprises; - Applying a coloring coating to at least a part of the surface of the stainless steel sheet of the metal wall that faces inward when the metal wall forms the compartment of the switching device by a printing machine.
10. The method according to any one of claims 8-9, wherein, The stainless steel sheet comprises at least one hole, and wherein the method comprises: - Not applying the coloring coating to the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the compartment of the switching device at the periphery of one or more of the at least one hole by the printing machine.
11. The method according to any one of claims 8 to 10, wherein The method comprises: - Not applying the coloring coating to the surface of the stainless steel sheet of the metal wall that faces outward when the metal wall forms the compartment of the switching device at one or more outer peripheries of the stainless steel sheet by the printing machine.
12. The method according to any one of claims 8-11, wherein, The method comprises pretreating one or more surfaces of the stainless steel sheet with a primer before printing.
13. The method according to any one of claims 8 - 12, wherein, The method includes irradiating the coloring coating with ultraviolet light when printing the coloring coating and / or irradiating the coloring coating with ultraviolet light after the printing of the coloring coating is completed.
14. A method for treating metal conductors (1, 2) for a switching device (100), wherein, The metal conductor includes a copper busbar, and wherein the method includes: - Applying a coloring coating to at least a portion of the surface of the copper busbar by a printing machine.
15. A switching device, comprising a metal wall according to any one of claims 1-6, and / or a metal conductor according to claim 7, and / or a metal wall processed by the method according to any one of claims 8-13, and / or a metal conductor processed by the method according to claim 14.