Welding test device

Abstract

The invention provides a welding test device, which comprises a case, and the side wall of the case is provided with an observation window and a vent hole communicated with an external negative pressure source; the welding assembly is arranged in the case and comprises a welding platform and a welding robot, a test piece is detachably installed on the welding platform, and a welding gun is installed at the execution end of the welding robot; the image acquisition equipment is arranged outside the case and is used for aligning to the welding part of the test piece through the observation window and recording dynamic behaviors of arc and droplet transition; the protection assembly comprises a light-transmitting baffle, and the light-transmitting baffle is detachably installed in the machine box and located between the welding platform and the observation window. According to the welding test device, simulation of the low-pressure welding environment and observation of key parameters such as the arc form and the droplet transition dynamic behavior in the low-pressure welding environment can be achieved, then the internal relation among air pressure, welding parameters and welding seam forming can be analyzed and obtained, and a basis is provided for formulation of the welding technology in the high-altitude low-pressure area.

Description

Technical Field

[0001] This application relates to the field of welding testing equipment technology, and more specifically, to a welding testing device. Background Technology

[0002] With the increasing demand for refined oil and natural gas in the Tibet Autonomous Region, there is an urgent need to construct refined oil and natural gas pipelines in the region. Due to the high altitude and low air pressure in the Tibet Autonomous Region, it is necessary to explore a set of welding processes and methods suitable for the region for pipeline welding.

[0003] To provide a basis for the formulation of welding processes, it is urgent to study the dynamic behavior of arc and droplet transfer under low pressure environment, analyze the influence of changes in gas pressure and welding parameters on arc morphology and droplet transfer frequency and form, and obtain the intrinsic relationship between gas pressure, welding parameters and weld formation. Summary of the Invention

[0004] This application provides at least one welding test device that can simulate low-pressure welding environments and observe key parameters such as arc morphology and droplet transfer dynamics under low-pressure welding conditions. This allows for the analysis and acquisition of the intrinsic relationship between gas pressure, welding parameters, and weld formation, providing a basis for the formulation of welding processes in high-altitude, low-pressure areas.

[0005] This application provides a welding test apparatus, including: The chassis has an observation window on its side wall and a vent on its top that communicates with an external negative pressure source, which is used to adjust the internal air pressure of the chassis to simulate a high-altitude, low-pressure environment. A welding assembly is disposed inside the chassis. The welding assembly includes a welding platform and a welding robot. Two test pieces to be welded together are detachably mounted on the welding platform. The welding robot is equipped with a welding torch that can weld the two test pieces together. An image acquisition device is installed outside the chassis. The image acquisition end of the image acquisition device is aimed at the welding part of the specimen through the observation window and records the dynamic behavior of arc and droplet transfer. A protective assembly, comprising a light-transmitting baffle, which is detachably installed inside the chassis and located between the welding platform and the observation window.

[0006] In one optional embodiment, the chassis is equipped with a pressure gauge, the detection end of which is connected to the inside of the chassis, and the pressure gauge is used to detect the air pressure inside the chassis.

[0007] In one optional embodiment, a pressure regulating valve is connected in series between the chassis and the external negative pressure source, the pressure regulating valve being used to precisely control the internal air pressure of the chassis.

[0008] In one optional embodiment, the chassis is provided with a first connection hole communicating with an external refrigeration unit for regulating the internal temperature of the chassis; and / or The chassis is provided with a second connection hole that communicates with an external humidifier for adjusting the humidity inside the chassis.

[0009] In one optional embodiment, the chassis is equipped with a thermometer for detecting the internal temperature of the chassis; and / or The chassis is equipped with a hygrometer, which is used to detect the humidity inside the chassis.

[0010] In one optional embodiment, a fan is provided inside the chassis, with both the air inlet and outlet of the fan located inside the chassis. The fan is used to agitate the air inside the chassis to simulate high-altitude winds.

[0011] In one alternative embodiment, a welding torch cleaner is provided inside the chassis for cleaning and maintaining the welding torch.

[0012] In one alternative embodiment, a bracket is provided on the outer wall of the chassis, and the image acquisition device is mounted on the bracket.

[0013] In one optional implementation, the number of observation windows is multiple, and the multiple observation windows are respectively located at different angles of the chassis; The number of image acquisition devices is multiple, and the image acquisition ends of the multiple image acquisition devices are respectively aimed at the welding part of the specimen through multiple observation windows to realize multi-angle recording of the dynamic behavior of arc and droplet transfer.

[0014] In one alternative embodiment, the welding platform includes: A platform for supporting the specimen; A limiting member is provided on the platform to restrict the specimen and prevent it from moving during welding. A clamping component is disposed on the platform and is used to clamp the specimen to prevent the specimen from warping during welding.

[0015] The above-mentioned technical solution of this application has the following beneficial technical effects: 1. The welding test apparatus of this application includes a chassis with an observation window, a welding assembly disposed within the chassis, an external negative pressure source connected to the chassis, and an image acquisition device disposed outside the chassis and capable of acquiring images of the welding process through the observation window. During the test, the chassis can cooperate with the external negative pressure source to adjust the internal air pressure of the chassis to simulate a high-altitude, low-pressure welding environment, providing realistic and reliable test conditions for welding parameter research. The image acquisition device can capture the arc morphology and droplet transfer dynamic behavior in real time. In other words, this device can simulate a low-pressure welding environment and observe key parameters such as arc morphology and droplet transfer dynamic behavior under low-pressure welding conditions, thereby enabling the analysis and acquisition of the intrinsic relationship between air pressure, welding parameters, and weld formation, providing a basis for the formulation of welding processes in high-altitude, low-pressure areas.

[0016] 2. The welding test apparatus of this application includes a light-transmitting baffle disposed inside the chassis and located between the welding platform and the observation window. The light-transmitting baffle can prevent welding spatter from contaminating the observation window, so as to ensure that the image acquisition equipment can obtain a clear image, which helps to improve the test accuracy and ensure the reliability of the final welding process.

[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this application and, together with the specification, serve to explain the technical solutions of this application. It should be understood that the following drawings only show some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a welding test apparatus provided in an embodiment of this application is shown; Figure 2 It shows Figure 1 A diagram from another perspective; Figure 3 It shows Figure 1 Internal structure diagram; Figure 4 It shows Figure 3 A magnified view of part A in the image; Figure 5 It shows Figure 3 A diagram from another perspective; In the picture: 1. Specimen; 100. Chassis; 101. Observation window; 102. Vent; 103. Pressure regulating valve; 104. First connection hole; 105. Second connection hole; 106. Air inlet valve; 107. Pressure gauge; 108. Thermometer; 109. Hygrometer; 200. Welding assembly; 210. Welding platform; 211. Column; 212. Table; 213. Limiting component; 214. Fastener; 215. Bolt; 220. Welding robot; 221. Welding torch; 300. Protective assembly; 310. Light-transmitting baffle; 320. Fixing plate; 400. Image acquisition equipment; 500. Fan; 600. Welding torch cleaner; 700. Support. Detailed Implementation

[0020] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0021] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0023] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] refer to Figures 1 to 5 This application provides a welding test apparatus, including: a chassis 100 with an observation window 101, a welding assembly 200, a protective assembly 300, and an image acquisition device 400.

[0026] refer to Figure 3 and Figure 5 The chassis 100 has a vent 102 that connects to an external negative pressure source to regulate the internal air pressure of the chassis 100 to simulate a high-altitude, low-pressure environment. In specific experiments, the vent 102 of the chassis 100 can be connected to a vacuum pump through an air passage. The vacuum pump can extract air from the chassis 100, reducing the air pressure inside the chassis 100, thereby simulating a high-altitude, low-pressure, hypoxic environment.

[0027] refer to Figure 3 and Figure 5 The welding assembly 200 is housed within the chassis 100. The welding assembly 200 includes a welding platform 210 and a welding robot 220. Two test pieces 1 (such as two rectangular steel plates) to be welded together can be detachably mounted on the welding platform 210. The welding robot 220 has a welding torch 221 installed at its execution end, capable of welding the two test pieces 1 together. In a specific test, the operator can install the two test pieces 1 to be welded together on the welding platform 210. The test pieces 1 are arranged horizontally with their surfaces aligned, and each test piece 1 has a welding bevel. After the gas pressure inside the chassis 100 reaches the test requirements, the welding robot 220 can move the welding torch 221, and the welding wire on the welding torch 221 contacts the two test pieces 1, welding them together. It should be understood that, in a specific setup, a welding machine compatible with and connected to the welding torch 221 is installed inside the chassis 100.

[0028] refer to Figure 1 and Figure 2 An image acquisition device 400 (such as a high-speed camera) is installed outside the chassis 100. The image acquisition end of the image acquisition device 400 is aimed at the welding part of the test piece 1 through the observation window 101 and records the dynamic behavior of the arc and molten droplet transition. In specific experiments, the image acquisition device 400 can capture the transition dynamic behavior of the arc and molten droplet formed during the welding of the test piece 1 through the observation window 101 to obtain image information of the molten droplet.

[0029] refer to Figure 3 and Figure 5 The protective component 300 includes a light-transmitting baffle 310 (such as a transparent glass plate or welding filter), which is detachably installed inside the housing 100 and located between the welding platform 210 and the observation window 101. In specific tests, the operator can install the light-transmitting baffle 310 between the welding platform 210 and the observation window 101. The baffle 310 not only does not affect the image acquisition by the image acquisition device 400, but also prevents welding spatter (such as sparks or slag) from contaminating the observation window 101, ensuring that the image acquisition device 400 can obtain clear images. It should be understood that in actual use, the light-transmitting baffle 310 needs to be replaced promptly after contamination.

[0030] Optionally, the side wall of the chassis 100 is provided with an opening and a transparent plate to block the opening, which serves as the observation window 101 of the chassis 100. Of course, in other embodiments, the chassis 100 may also be made of a transparent material.

[0031] refer to Figure 3 Optionally, the chassis 100 is equipped with a pressure gauge 107, which is used to detect the internal air pressure of the chassis 100. In specific tests, the operator can determine the internal air pressure of the chassis 100 based on the air pressure value displayed by the pressure gauge 107, thereby determining whether the internal air pressure of the chassis 100 meets the test conditions. In this embodiment, the pressure gauge 107 is installed on the outer wall of the chassis 100, and the detection end of the pressure gauge 107 is connected to the interior of the chassis 100.

[0032] refer to Figure 3 Optionally, a pressure regulating valve 103 is connected in series between the chassis 100 and the external negative pressure source. The pressure regulating valve 103 is used to precisely control the internal air pressure of the chassis 100. In specific tests, by controlling the pressure regulating valve 103, the internal air pressure of the chassis 100 can be adjusted to meet welding tests under different pressure conditions.

[0033] refer to Figure 3 and Figure 5 Optionally, the chassis 100 is provided with a first connection hole 104 communicating with an external chiller for regulating the internal temperature of the chassis 100. In specific experiments, the chassis 100 can be connected to an external chiller through the first connection hole 104, and the external chiller can cool the internal environment of the chassis 100 to simulate the low-temperature environment of a high-altitude region. This design enables the device to have the ability to regulate the temperature of the welding environment, which helps to improve the accuracy of the experiment. Of course, in other embodiments, the external chiller can have its cooling end located inside the chassis 100.

[0034] refer to Figure 3 and Figure 5Optionally, the chassis 100 is equipped with a thermometer 108, which is used to detect the internal temperature of the chassis 100. In a specific test, the operator can determine the internal temperature of the chassis 100 based on the temperature value displayed by the thermometer 108, thereby determining whether the internal temperature of the chassis 100 meets the test conditions. In this embodiment, the thermometer 108 is located inside the chassis 100.

[0035] Optionally, the side walls of the chassis 100 are provided with thermal insulation material. This design helps maintain the internal temperature of the chassis 100 and reduces the impact of the external environment on the internal temperature of the chassis 100. It should be understood that, in specific installations, the thermal insulation material can be installed on the inner or outer wall of the chassis 100.

[0036] refer to Figure 3 Optionally, the chassis 100 is provided with a second connection hole 105 communicating with an external humidifier for adjusting the humidity inside the chassis 100. In specific experiments, the chassis 100 can be connected to an external humidifier through the second connection hole 105, allowing the external humidifier to humidify the internal environment of the chassis 100, thereby simulating the humidity environment of a high-altitude region. This design enables the device to control the humidity of the welding environment, helping to improve the accuracy of the experiment.

[0037] refer to Figure 3 and Figure 5 Optionally, the chassis 100 is equipped with a hygrometer 109, which is used to detect the humidity inside the chassis 100. In specific tests, the operator can determine the humidity inside the chassis 100 based on the humidity value displayed by the hygrometer 109, thereby determining whether the humidity inside the chassis 100 meets the test conditions. In this embodiment, the hygrometer 109 is located inside the chassis 100.

[0038] refer to Figure 3 and Figure 5 Optionally, a fan 500 is installed inside the casing 100. Both the air inlet and outlet of the fan 500 are located within the casing 100. The fan 500 is used to agitate the air inside the casing 100 to simulate high-altitude winds. In specific experiments, the fan 500 can agitate the air inside the casing 100 to create airflow, thereby simulating high-altitude winds. It should be understood that in actual use, the wind speed can be adjusted by controlling the power or speed setting of the fan 500. This design enables the device to regulate the wind speed in the welding environment, which helps improve the accuracy of the experiment.

[0039] refer to Figure 2Optionally, the chassis 100 is equipped with an air inlet valve 106, which is used to release air into the chassis 100. In a specific test, when the internal air pressure of the chassis 100 is lower than the required test pressure, by controlling the opening of the air inlet valve 106, air can be supplied into the chassis 100 (i.e., outside air enters the chassis 100 through the air inlet valve 106), raising the internal pressure of the chassis 100 to the required test pressure. It should be understood that during the process of supplying air into the chassis 100, the internal temperature and humidity of the chassis 100 can also be adjusted simultaneously.

[0040] refer to Figure 3 and Figure 5 Optionally, a welding torch cleaner 600 is provided inside the chassis 100. The welding torch cleaner 600 is used to clean and maintain the welding torch 221. In specific tests, the welding torch cleaner 600 can clean the welding torch 221, cut off longer welding wires, prevent the nozzle and conductive nozzle of the welding torch 221 from clogging, and spray anti-spatter agent. It should be noted that the welding torch cleaner 600 is prior art, and will not be described in detail in this embodiment.

[0041] refer to Figure 1 and Figure 2 Optionally, a bracket 700 is provided on the outer wall of the chassis 100, and the image acquisition device 400 is mounted on the bracket 700. This design enables the integrated setup of the chassis 100 and the image acquisition device 400, helping to shorten the installation and positioning time of the image acquisition device 400 during each test. In this embodiment, the bracket 700 includes a base plate integrally formed with the outer wall of the chassis 100 and a support rod disposed on the base plate for mounting the image acquisition device 400.

[0042] refer to Figure 2 Optionally, there are multiple observation windows 101, each located at a different angle of the chassis 100. There are also multiple image acquisition devices 400 (the same number as the observation windows 101 and the brackets 700). The image acquisition ends of the multiple image acquisition devices 400 are respectively mounted on multiple brackets 700, and the image acquisition ends of the multiple image acquisition devices 400 are aligned with the welding area of ​​the specimen 1 through multiple observation windows 101. This design enables multi-angle recording of the dynamic behavior of the arc and molten droplet transfer, obtaining the shape, stability, and energy distribution of the arc at different spatial locations, analyzing the contraction or diffusion of the arc under low-pressure conditions, avoiding blind spots from a single perspective, and accurately recording the spatter and transfer patterns of the molten droplets (such as short-circuit transfer, spray transfer, etc.), providing data support for optimizing welding parameters. In this embodiment, there are two observation windows 101, two brackets 700, and two image acquisition devices 400.

[0043] refer to Figure 4 and Figure 5Optionally, the welding platform 210 includes a column 211, a platform 212, a limiting member 213, and a clamping member 214. The column 211 is vertically fixed inside the housing 100. The platform 212 is mounted on the upper end of the column 211 and has a horizontal surface. The horizontal surface of the platform 212 is used to support the specimen 1 (e.g., in the installed state, the lower surface of the specimen 1 is in contact with the horizontal surface of the platform 212). The limiting member 213 is disposed on the platform 212 to restrict the specimen 1 and prevent the specimen 1 from moving during welding. The clamping member 214 is disposed on the platform 212 and located above the specimen 1 to clamp the specimen 1 (e.g., in the clamped state, the lower surface of the clamping member 214 is in contact with the upper surface of the specimen 1) to prevent the specimen 1 from warping during welding.

[0044] refer to Figure 4 Optionally, the limiting member 213 is a stop block with a groove on its side. In a specific test, the specimen 1 is placed on the surface of the platform 212, and one end is inserted into the groove on the side of the stop block. This design enables the limiting member 213 to limit the specimen 1, preventing it from shifting during welding and affecting the welding effect.

[0045] refer to Figure 4 Optionally, the clamping component 214 is a liftable clamping plate. In a specific test, after the specimen 1 is inserted into the slot, the clamping plate can be controlled to move downwards and press the specimen 1. Of course, when replacing the specimen 1, the clamping plate needs to be controlled to move upwards and away from the specimen 1 first. This design enables the clamping component 214 to press the specimen 1, preventing the specimen 1 from warping during welding and affecting the welding effect. In this embodiment, the platform 212 is provided with a threaded hole, and a bolt 215 is provided in the threaded hole. The clamping plate is provided with a through hole and is sleeved on the outside of the bolt 215 through the through hole. When the bolt 215 is tightened, the range of motion of the clamping plate can be gradually reduced, and finally the clamping plate and the platform 212 clamp the specimen 1.

[0046] refer to Figure 3 Optionally, the protective assembly 300 also includes a fixing plate 320, which is disposed inside the housing 100 and located between the welding platform 210 and the observation window 101. The fixing plate 320 has grooves or through holes along its thickness direction, and the light-transmitting baffle 310 is embedded in the grooves or through holes. This design helps to improve the loading and unloading efficiency of the light-transmitting baffle 310, thereby facilitating the replacement of the light-transmitting baffle 310.

[0047] When performing welding tests using the welding test apparatus of this application embodiment, the test process is as follows: The staff first fixes the two test pieces 1 to be welded together on the welding platform 210, then seals the machine box 100, starts the external negative pressure source, and draws out the air in the machine box 100, so that the air pressure in the machine box 100 is reduced and maintained within the preset value range. Based on the temperature and humidity inside the chassis 100, staff can use a humidifier and a refrigeration unit to regulate the temperature and humidity inside the chassis 100; at the same time, staff can turn on the fan 500 to simulate a windy scenario. After the air pressure, temperature, humidity and wind speed inside the aforementioned chassis 100 are adjusted to the appropriate levels, the welding robot 220 is started. The welding robot 220 begins to weld the specimen 1. During the welding process, the image acquisition device 400 remains on, and the image acquisition device 400 captures images of the welding process, recording the electric arc and the transition dynamic behavior of the molten droplets generated during welding, which is convenient for subsequent analysis.

[0048] The welding test apparatus of this application includes a chassis 100 with an observation window 101, a welding assembly 200 disposed within the chassis 100, an external negative pressure source connected to the chassis 100, and an image acquisition device 400 disposed outside the chassis 100 and capable of acquiring images of the welding process through the observation window 101. During the test, the chassis 100 can cooperate with the external negative pressure source to adjust the internal air pressure of the chassis 100 to simulate a high-altitude, low-pressure welding environment, providing realistic and reliable test conditions for welding parameter research. The image acquisition device 400 can capture the arc morphology and droplet transfer dynamic behavior in real time. In other words, this device can simulate a low-pressure welding environment and observe key parameters such as arc morphology and droplet transfer dynamic behavior under low-pressure welding conditions, thereby enabling the analysis and acquisition of the intrinsic relationship between air pressure, welding parameters, and weld formation, providing a basis for the formulation of welding processes in high-altitude, low-pressure areas. In addition, the welding test device also includes a light-transmitting baffle 310 disposed inside the housing 100 and located between the welding platform 210 and the observation window 101. The light-transmitting baffle 310 can prevent welding spatter from contaminating the observation window 101, so as to ensure that the image acquisition device 400 can acquire a clear image, which helps to improve the test accuracy and ensure the reliability of the final welding process.

[0049] One or more embodiments in this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this specification should be included within the protection scope of this application.

[0050] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A welding test apparatus, characterized in that, include: The chassis has an observation window on its side wall and a vent on its top that communicates with an external negative pressure source, which is used to adjust the internal air pressure of the chassis to simulate a high-altitude, low-pressure environment. A welding assembly is disposed inside the chassis. The welding assembly includes a welding platform and a welding robot. Two test pieces to be welded together are detachably mounted on the welding platform. The welding robot is equipped with a welding torch that can weld the two test pieces together. An image acquisition device is installed outside the chassis. The image acquisition end of the image acquisition device is aimed at the welding part of the specimen through the observation window and records the dynamic behavior of arc and droplet transfer. A protective assembly, comprising a light-transmitting baffle, which is detachably installed inside the chassis and located between the welding platform and the observation window.

2. The welding test apparatus according to claim 1, characterized in that, The chassis is equipped with a pressure gauge, the detection end of which is connected to the inside of the chassis, and the pressure gauge is used to detect the air pressure inside the chassis.

3. The welding test apparatus according to claim 1, characterized in that, A pressure regulating valve is connected in series between the chassis and the external negative pressure source. The pressure regulating valve is used to precisely control the air pressure inside the chassis.

4. The welding test apparatus according to claim 1, characterized in that, The chassis is provided with a first connection hole for communicating with an external refrigeration unit, used to regulate the internal temperature of the chassis; and / or The chassis is provided with a second connection hole that communicates with an external humidifier for adjusting the humidity inside the chassis.

5. The welding test apparatus according to claim 4, characterized in that, The chassis is equipped with a thermometer, which is used to detect the internal temperature of the chassis; and / or The chassis is equipped with a hygrometer, which is used to detect the humidity inside the chassis.

6. The welding test apparatus according to claim 1, characterized in that, A fan is installed inside the chassis, with both the air inlet and outlet of the fan located inside the chassis. The fan is used to agitate the air inside the chassis to simulate high-altitude winds.

7. The welding test apparatus according to claim 1, characterized in that, The chassis is equipped with a welding torch cleaner, which is used to clean and maintain the welding torch.

8. The welding test apparatus according to claim 1, characterized in that, The outer wall of the chassis is provided with a bracket, and the image acquisition device is mounted on the bracket.

9. The welding test apparatus according to claim 1, characterized in that, The number of observation windows is multiple, and the multiple observation windows are located at different angles of the chassis; The number of image acquisition devices is multiple, and the image acquisition ends of the multiple image acquisition devices are respectively aimed at the welding part of the specimen through multiple observation windows to realize multi-angle recording of the dynamic behavior of arc and droplet transfer.

10. The welding test apparatus according to claim 1, characterized in that, The welding platform includes: A platform for supporting the specimen; A limiting member is provided on the platform to restrict the specimen and prevent it from moving during welding. A clamping component is disposed on the platform and is used to clamp the specimen to prevent the specimen from warping during welding.

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