A salt spray testing machine for testing corrosion resistance of metal sheets

Abstract

This utility model discloses a salt spray test chamber for testing the corrosion resistance of metal plates, including a test chamber, a mounting frame, a baffle, a rotating mechanism, and a salt spray output device. The salt spray output device is installed on the upper inner wall of the test chamber and outputs salt spray downwards. The mounting frame is set in the test chamber and includes a connecting rod, a first support beam, a second support beam, and suction cups. The middle part of the connecting rod is rotatably connected to the test chamber and driven by the rotating mechanism. The suction cups are installed at both ends of the first and second support beams. The first support beam is equipped with the baffle via the suction cups, and the second support beam is equipped with the metal plate via the suction cups. The metal plate is parallel to the baffle and is inclined. The upper end of the baffle is vertically projected onto the middle of the adjacent metal plate. Among two adjacent metal plates, the upper end of the upper metal plate is vertically projected onto the middle of the lower metal plate. This utility model proposes a salt spray test device that provides more uniform salt spray and improves the accuracy of the salt spray test.

Description

Technical Field

[0001] This utility model relates to the field of salt spray testing technology, and in particular to a salt spray testing machine for testing the corrosion resistance of metal plates. Background Technology

[0002] Metal plates, especially coated metal plates, often require salt spray testing to ensure their salt spray corrosion resistance meets standards. Existing salt spray testing equipment, as shown in patent application number CN201922468365.8, includes a test chamber, connecting pipes, and a salt spray chamber. In use, the test chamber is opened, and multiple samples are placed vertically inside. Salt spray is then sprayed into one side of the test chamber through the connecting pipes, covering the sample surfaces to test their corrosion resistance. However, with existing connecting pipes, the first sample receives more salt spray, while the samples behind it receive less, resulting in poor uniformity of the salt spray on the samples and affecting the accuracy of the salt spray test. Utility Model Content

[0003] To address the shortcomings of uneven salt spraying in existing salt spray testing devices, this invention proposes a salt spray testing device that provides more uniform salt spraying and improves the accuracy of salt spray testing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A salt spray test chamber for testing the corrosion resistance of metal plates includes a test chamber, a mounting frame, a baffle, a rotating mechanism, and a salt spray output device. The salt spray output device is installed on the upper inner wall of the test chamber and outputs salt spray downwards. The mounting frame is set in the test chamber and includes a connecting rod, a first support beam, a second support beam, and suction cups. The middle part of the connecting rod is rotatably connected to the test chamber and driven by the rotating mechanism. The first support beam is fixedly connected to the upper end of the connecting rod. Multiple second support beams are provided and are sequentially fixedly connected to the connecting rod along its axial direction. The suction cups are installed at both ends of the first and second support beams. The baffle is installed on the first support beam through the suction cups, and the metal plate is installed on the second support beam through the suction cups. The metal plate is parallel to the baffle and is inclined. The upper end of the baffle is vertically projected onto the middle of the adjacent metal plate. Among two adjacent metal plates, the upper end of the upper metal plate is vertically projected onto the middle of the lower metal plate.

[0005] With the above settings, firstly, during the salt spray test, the surface area of ​​each metal plate facing the salt spray is basically equal, so that the salt spray can be evenly sprayed onto each metal plate; secondly, the rotating mechanism can rotate the mounting frame to change the position of the surface of the metal plate facing the salt spray, so as to prevent the surface of the metal plate from receiving salt spray for a long time and accumulating liquid.

[0006] Furthermore, there are two mounting brackets, arranged symmetrically front and back, and the rotating mechanism is connected to the middle of the connecting rod of one of the mounting brackets.

[0007] The above settings improve the stability of the metal plate and the baffle.

[0008] Furthermore, the test chamber includes a chamber body and a door, with the left or right side of the chamber body open and the door being rotatably connected. The middle of the connecting rods of the two mounting brackets is rotatably connected to the inner walls of the front and rear sides of the chamber body.

[0009] Furthermore, a window is provided on the front side of the enclosure, and a transparent panel is installed in the window.

[0010] The above settings facilitate observation of metal plate corrosion during the experiment.

[0011] Furthermore, the testing machine also includes a controller, a temperature sensor, and a heating plate. The heating plate and the temperature sensor are both installed in the testing chamber, and both the temperature sensor and the heating plate are connected to the controller.

[0012] The above settings allow for control of the temperature inside the test chamber, thereby improving the accuracy of the test.

[0013] Furthermore, the testing machine also includes a support plate, which is horizontally fixed in the test chamber. A heating plate is installed on the underside of the support plate, and the horizontal projection of the heating plate is set in the horizontal projection of the support plate.

[0014] The above settings prevent salt spray from falling directly onto the heating plate and prevent caking on the surface of the heating plate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the testing machine used in an embodiment.

[0016] Figure 2 This is a schematic diagram of the mounting bracket mounting plate and metal plate in an embodiment.

[0017] Figure 3 This is a first schematic diagram of a salt spray test using a testing machine, as shown in the example.

[0018] Figure 4 This is a second schematic diagram of the salt spray test of the testing machine in the embodiment. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0020] like Figures 1 to 4A salt spray test chamber for testing the corrosion resistance of metal plates includes a test chamber 3, a mounting frame 4, a baffle 5, a rotating mechanism 13, and a salt spray output device 6. The salt spray output device 6 is installed on the upper inner wall of the test chamber 3 and outputs salt spray downwards. The mounting frame 4 is disposed in the test chamber 3 and includes a connecting rod 41, a first support beam 42, a second support beam 43, and a suction cup 44. The middle part of the connecting rod 41 is rotatably connected to the test chamber 3 and driven by the rotating mechanism. The first support beam 42 is fixedly connected to the upper end of the connecting rod 41, and the second support beam 43... Multiple suction cups 44 are installed at both ends of the first support beam 42 and the second support beam 43. The first support beam 42 is equipped with the baffle 5 through the suction cup 44, and the second support beam 43 is equipped with the metal plate 7 through the suction cup 44. The metal plate 7 is parallel to the baffle 5 and is inclined. The upper end of the baffle 5 is vertically projected to the middle of the adjacent metal plate 7. Among two adjacent metal plates 7, the upper end of the upper metal plate 7 is vertically projected to the middle of the lower metal plate 7.

[0021] With the above settings, firstly, during the salt spray test, the salt spray-facing surface area of ​​each metal plate 7 is basically equal, so that the salt spray can be evenly sprayed onto each metal plate 7; secondly, the rotating mechanism can rotate the mounting frame 4 to change the position of the salt spray-facing surface of the metal plate 7, so as to prevent the surface of the metal plate 7 from receiving salt spray for a long time and accumulating liquid.

[0022] The test chamber 3 in this application is basically a cuboid cavity structure that can be opened and closed. Figure 1 The salt spray output device 6, specifically comprising a drive pump and an atomizer, is located on the front, back, left, and right sides of the testing machine. Multiple atomizers are evenly installed on the upper inner wall of the test chamber 3. The drive pump box atomizer pumps the salt solution. The middle of the connecting rod 41 of the mounting bracket 4 is rotatably connected to the rear inner wall of the test chamber 3. The middle of the first support beam 42 is vertically fixed to the upper end of the connecting rod 41. The baffle 5 is pre-installed on the first support beam 42 via a suction cup 44. The second support beam 43 is parallel to the first support beam 42, and its middle is fixedly connected to the connecting rod 41. During the salt spray test, the test chamber 3 is opened, and the metal plate 7 to be tested is installed on the second support beam 43 via the suction cup 44. The distance between the baffle 5 and the adjacent metal plate 7 below is 30cm, and the distance between two adjacent metal plates 7 is 30cm. Figure 3 The baffle 5 and metal plate 7 tilt to one side. Under the shielding effect of the baffle 5, half of the area of ​​the uppermost metal plate 7 is directly exposed to the salt spray. Among two adjacent metal plates 7, half of the lower metal plate 7 is directly exposed to the salt spray. That is, when the atomizer sprays salt spray downwards, the salt spray moves downwards under the action of gravity, and half of the area of ​​each metal plate 7 is directly exposed to the salt spray. In addition, under the action of airflow, the other half of the area of ​​the metal plate 7 can also be exposed to less salt spray. Every 10 minutes, the rotating mechanism, such as a motor, drives the connecting rod 41 to rotate, and the baffle 5 and metal plate 7 tilt to the other side. Figure 4 At this time, the other half of the metal plate 7 is directly exposed to salt spray, preventing the same location on the metal plate 7 from being exposed to salt spray for a long time and accumulating liquid. After 48 hours of salt spray test, the test chamber 3 is opened to observe the rust on the surface of the metal plate 7 to determine whether its corrosion resistance is qualified.

[0023] As one implementation method, there are two mounting brackets 4, arranged symmetrically front and back, and the rotating mechanism is connected to the middle of the connecting rod 41 of one of the mounting brackets 4.

[0024] The above settings improve the stability of the metal plate 7 and the baffle 5.

[0025] The first support beam 42 of this application is equipped with a suction cup 44 at both ends, and the second support beam 43 is equipped with a suction cup 44 at both ends. Both the baffle 5 and the metal plate 7 are rectangular structures. The four corners of the baffle 5 are connected to the suction cup 44 to improve stability. The four corners of the metal plate 7 are also connected to the suction cup 44 to improve stability.

[0026] As one implementation, the test chamber 3 includes a chamber body 31 and a door 32. The chamber body 31 is open on the left or right side and is rotatably connected to the door 32. The middle part of the connecting rod 41 of the two mounting brackets 4 is rotatably connected to the inner walls of the front and rear sides of the chamber body 31.

[0027] As one implementation method, a window is provided on the front side of the housing 31, and a transparent panel 8 is installed in the window.

[0028] The above settings facilitate observation of the corrosion of metal plate 7 during the test.

[0029] As one implementation, the testing machine also includes a controller 9, a temperature sensor 10, and a heating plate 11. The heating plate 11 and the temperature sensor 10 are both installed in the test chamber 3, and the temperature sensor 10 and the heating plate 11 are both connected to the controller 9.

[0030] The above settings can control the temperature inside the test chamber 3 to improve the accuracy of the test.

[0031] The temperature sensor 10 of this application detects the temperature inside the test chamber 3 in real time. The controller 9 receives the temperature signal from the temperature sensor 10 and controls the heating plate 11 to start and stop according to the temperature signal. When the temperature in the test chamber 3 is lower than 35 degrees Celsius, the heating plate 11 is turned on to raise the temperature in the test chamber 3. When the temperature in the test chamber 3 is higher than 36 degrees Celsius, the heating plate 11 is turned off, and the temperature in the test chamber 3 cools down naturally. During the test, the temperature in the test chamber 3 of this application fluctuates between 35 and 36 degrees Celsius.

[0032] As one implementation, the testing machine also includes a support plate 12, which is horizontally fixed in the test chamber 3. A heating plate 11 is installed on the lower side of the support plate 12, and the horizontal projection of the heating plate 11 is set in the horizontal projection of the support plate 12.

[0033] The above settings prevent salt spray from falling directly onto the heating plate 11 and prevent caking on the surface of the heating plate 11.

[0034] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A salt spray test chamber for testing the corrosion resistance of metal plates, characterized in that, The system includes a test chamber, a mounting frame, a baffle, a rotating mechanism, and a salt spray output device. The salt spray output device is installed on the upper inner wall of the test chamber and outputs salt spray downwards. The mounting frame is disposed inside the test chamber and includes a connecting rod, a first support beam, a second support beam, and suction cups. The middle part of the connecting rod is rotatably connected to the test chamber and driven by the rotating mechanism. The first support beam is fixedly connected to the upper end of the connecting rod. Multiple second support beams are provided and sequentially fixedly connected to the connecting rod along its axial direction. The suction cups are installed at both ends of the first and second support beams. The baffle is mounted on the first support beam via the suction cups, and a metal plate is mounted on the second support beam via the suction cups. The metal plate is parallel to the baffle and is inclined. The upper end of the baffle is vertically projected onto the middle of the adjacent metal plate. In two adjacent metal plates, the upper end of the upper metal plate is vertically projected onto the middle of the lower metal plate.

2. The salt spray test chamber for testing the corrosion resistance of metal plates according to claim 1, characterized in that, There are two mounting brackets, arranged symmetrically front and back, and the rotating mechanism is connected to the middle of the connecting rod of one of the mounting brackets.

3. A salt spray test chamber for testing the corrosion resistance of metal plates according to claim 2, characterized in that, The test chamber includes a chamber body and a door. The chamber body is open on the left or right side and is rotatably connected to the door. The middle of the connecting rods of the two mounting brackets is rotatably connected to the inner walls of the front and rear sides of the chamber body.

4. A salt spray test chamber for testing the corrosion resistance of metal plates according to claim 3, characterized in that, A window is provided on the front side of the box, and a transparent panel is installed in the window.

5. A salt spray test chamber for testing the corrosion resistance of metal plates according to claim 1, characterized in that, The testing machine also includes a controller, a temperature sensor, and a heating plate. The heating plate and the temperature sensor are both installed in the test chamber and are connected to the controller.

6. The salt spray test machine for testing corrosion resistance of a metal sheet according to claim 5, wherein The testing machine also includes a support plate, which is horizontally fixedly connected in the test chamber. The heating plate is installed on the lower side of the support plate, and the horizontal projection of the heating plate is set in the horizontal projection of the support plate.

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