A high-efficiency, multi-functional testing device for anti-corrosion coatings and its application method

Abstract

This invention belongs to the field of anti-corrosion coating testing technology, specifically a high-efficiency, multi-functional testing device and method for anti-corrosion coatings; it includes a salt spray testing machine; the salt spray testing machine includes a control system, a test chamber, an oven, and a workpiece placement system; the invention features a workpiece placement system within the test chamber, which can accommodate workpieces of different sizes and ensure that all parts of the workpieces are exposed to salt spray; this ensures that workpieces of various sizes can be accommodated, and that all parts of the workpieces are exposed to salt spray, guaranteeing the accuracy of the test; after the salt spray test, the workpiece placement system can move the workpieces into the oven without opening the test chamber. The oven is equipped with a spraying mechanism and a heating mechanism, which can clean and dry the workpieces after the test, reducing the complexity of the test, minimizing salt spray overflow, saving energy during subsequent tests, and reducing harm to human health.

Description

Technical Field

[0001] This invention belongs to the field of anti-corrosion coating testing technology, specifically a high-efficiency, multi-functional testing device for anti-corrosion coatings and its usage method. Background Technology

[0002] Anti-corrosion coatings are generally divided into conventional anti-corrosion coatings and heavy-duty anti-corrosion coatings, and are an essential type of paint. Conventional anti-corrosion coatings provide corrosion protection for metals under normal conditions, extending the service life of non-ferrous metals. Heavy-duty anti-corrosion coatings, on the other hand, can be used in relatively harsh corrosive environments and offer a longer protection period than conventional anti-corrosion coatings.

[0003] In the development of anti-corrosion coatings, it is necessary to test their anti-corrosion performance. Salt spray testing machines are often used for this purpose. Salt spray testing machines are primarily used for environmental testing of metal products in an artificially simulated salt spray environment to conduct rapid corrosion tests. They play a crucial role in assessing a product's resistance to natural salt spray environments and, along with humidity and heat testing and mold testing, are collectively known as artificial climate environment "three-proof" testing equipment. Salt spray testing machines use salt spray corrosion to test the reliability of the tested samples. Salt spray refers to a diffused system composed of tiny salt-containing droplets in the atmosphere. Inside the salt spray testing machine, a corrosive solution is sprayed into a mist by compressed air. This mist surrounds the test sample within the test chamber. The test can be continuous or cyclical. The corrosion resistance of each sample is defined as the time it takes for corrosion to occur; the longer the time, the better the corrosion resistance.

[0004] In existing technologies, salt spray testing machines typically have a support frame on which workpieces are placed for salt spray testing. When the workpiece contacts the support, the contact area is not exposed to the salt spray, making it more susceptible to corrosion than other parts, thus affecting the observation results. This is especially true for smaller workpieces, which are inconvenient to place on the support, and the contact area between the workpiece and the support is a larger proportion of its surface area, further affecting the corrosion effect and thus the accuracy of the test. After the test, the salt spray testing machine needs to be opened to remove the workpiece, clean it, and dry it to observe the corrosion effect. This process is cumbersome. Furthermore, during salt spray resistance testing, it is necessary to observe the changes on the sample surface over a specific period of time to determine the sample's corrosivity. Opening the salt spray testing machine causes salt spray loss, requiring re-spraying of salt spray for subsequent tests, which is not only energy-intensive but also poses a health hazard.

[0005] In view of this, the present invention provides a highly efficient and multifunctional testing device and method for anti-corrosion coatings to solve the above-mentioned technical problems. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, enable salt spray testing machines to adapt to workpieces of different sizes, and reduce operational complexity when removing workpieces, this invention provides a highly efficient and multifunctional testing device and method for anti-corrosion coatings.

[0007] The technical solution adopted by this invention to solve its technical problem is: a high-efficiency multi-functional testing device for anti-corrosion coatings, comprising: a salt spray testing machine; the salt spray testing machine comprising: a control system; a test chamber, the top of which is provided with a cover, and a spray tower is provided inside the test chamber; an oven, which is fixedly connected to the test chamber, and is provided with a spraying mechanism and a heating mechanism; and a workpiece placement system, which is provided inside the test chamber, capable of accommodating workpieces of different sizes, and ensuring that all parts of the workpieces are in contact with the salt spray; and after the salt spray test, the workpiece placement system can move the workpieces into the oven without opening the test chamber;

[0008] In this application, the control system is used to control the operation of the entire device. Before the test begins, the chamber lid is opened and the workpiece is placed inside the test chamber. The test chamber is equipped with a spray tower to generate salt spray. The test chamber is also equipped with a workpiece placement system that can accommodate workpieces of different sizes and ensure that all parts of the workpiece can come into contact with the salt spray. This ensures that workpieces of all sizes can be accommodated and that all parts of the workpiece can come into contact with the salt spray, thus ensuring the accuracy of the test. After the salt spray test, the workpiece placement system can move the workpiece into an oven without opening the test chamber. The oven is equipped with a spray mechanism and a heating mechanism to clean and dry the workpiece after the test, reducing the complexity of the test and reducing the overflow of salt spray. This saves energy and reduces harm to the human body during subsequent tests.

[0009] Preferably, the workpiece placement system includes: two circular plates, each disposed near one of the two side walls of the test chamber; placement rods, with a plurality of placement rods arranged in a ring between the two circular plates; a motor, the output shaft of which is fixedly connected to the circular plates; and a drive mechanism, the side walls of the test chamber and the oven being provided with a drive mechanism that enables the circular plates and placement rods to move back and forth between the test chamber and the oven.

[0010] Preferably, the driving mechanism includes: pulleys, with pulleys rotatably connected to the two opposite side walls of the test chamber and the oven; a first belt, with a first belt disposed between the two pulleys on the side wall of the test chamber and the oven on the same side, the first belt passing through the test chamber and the oven; a T-shaped block, with a T-shaped block fixedly connected to one of the first belts on one side, one end of the T-shaped block being rotatably connected to one of the first circular plates; a first motor fixedly connected to the first belt on the other side; and two opening and closing plates rotatably connected to the connection part between the test chamber and the oven, the rotation centers of the two opening and closing plates being located at the top and bottom of the test chamber respectively, and each of the rotation centers of the two opening and closing plates being provided with a torsion spring.

[0011] Preferably, two blocking blocks are fixedly connected to the first belt;

[0012] Several placement rods form a closed ring. Workpieces, both large and small, are placed inside the ring of rods. At the start of the test, the test chamber is filled with salt spray. Motor One drives a circular plate to rotate, causing the workpiece to tumble within the space formed by the ring of rods. This continuously changes the contact surface between the workpiece and the rods, ensuring that every part of the workpiece comes into contact with the salt spray and guaranteeing the accuracy of the test. When it is necessary to observe the corrosion on the workpiece surface, the pulleys are rotated. These pulleys are driven by a motor, which in turn moves two belts. The T-shaped block and motor are fixed to different belts. The No. 1 belt drives the No. 1 motor and the T-shaped block, which are fixed to it, to move the No. 1 circular plate and the placement rod from the test chamber to the drying oven. Under normal circumstances, the two opening and closing plates are in a vertical position, making the test chamber and the drying oven independent of each other. During the movement of the No. 1 circular plate and the placement rod from the test chamber to the drying oven, the two opening and closing plates are squeezed, the torsion spring stores energy, and the opening and closing plates open to allow the No. 1 circular plate and the placement rod to pass through. After passing through, the two opening and closing plates remain closed under the action of the torsion spring. Then the drying oven cleans and dries the workpiece before it is taken out for observation. This reduces the cumbersomeness of the test, reduces the overflow of salt spray, saves energy and reduces the harm to the human body during subsequent tests.

[0013] It should be noted that the No. 1 belt is located inside the side walls of the test chamber and the oven. Therefore, the side walls of the test chamber and the oven have grooves. To ensure that the grooves do not allow salt spray to overflow from the test chamber into the oven, two blocking blocks are fixedly connected to each No. 1 belt. When the No. 1 circular plate and the placement rod are located in the test chamber and the oven respectively, the blocking block corresponding to each No. 1 belt can be located at the two opening and closing plates. The two opening and closing plates together ensure the independence of the test chamber and the oven.

[0014] Preferably, each of the two circular plates No. 1 has a connecting rod fixedly connected to its adjacent side, and each of the connecting rods corresponding to the two circular plates No. 1 has an annular plate connected to it. The two annular plates are connected to both ends of the placement rod.

[0015] Preferably, each of the placement rods is fixedly provided with an elastic airbag on its outer periphery.

[0016] Preferably, each of the placement rods is a hollow structure and communicates with the interior of the elastic airbag; the T-shaped block, the first circular plate connected to the T-shaped block, the corresponding connecting rod and the corresponding annular plate are all provided with air passages, and the air passages communicate with the interior of the placement rod;

[0017] When workpieces are of different sizes, the gap between the placement bars can be controlled by adjusting the expansion of the elastic airbag, ensuring that workpieces of different sizes do not fall through the gap (larger workpieces require larger gaps, and vice versa). The elastic airbag also protects the workpieces during tumbling, preventing them from impacting the workpiece surface and reducing the influence on the experimental results. Specifically, air holes can be opened on the side wall of the test chamber, with an external air pump connected to the holes. Airflow enters the placement bars through the T-block, the first circular plate connected to the T-block, the corresponding connecting rod, and the air passages within the corresponding annular plate, and then enters the elastic airbag, achieving the purpose of expanding the elastic airbag. Similarly, evacuation can cause the elastic airbag to contract.

[0018] Preferably, the placement rod consists of two No. 1 rods and one No. 2 rod, with the two ends of the No. 2 rod nested inside the No. 1 rods respectively, and a No. 1 spring fixedly connected between the two ends of the No. 2 rod and the No. 1 rods respectively; the two No. 1 rods are embedded in the annular plate.

[0019] The placement rod consists of two No. 1 rods and one No. 2 rod. The two ends of the No. 2 rod are nested inside the No. 1 rods, and the two ends of the No. 2 rod are fixedly connected to the No. 1 rods with springs. That is, the placement rod can extend and retract, and the two No. 1 rods, i.e. the two ends of the placement rod, are embedded in the annular plate, i.e., the slot connection method. When it is necessary to put the workpiece into the annular space formed by the placement rods (removing a placement rod at a certain point to allow the workpiece to enter), or when the expansion and contraction of the elastic airbag cannot significantly change the gap between the placement rods (the workpiece is too large or too small, and the placement rods are evenly disassembled or evenly installed), the gap between the placement rods can be changed by removing or installing the placement rods.

[0020] A method for using a high-efficiency, multi-functional testing device for anti-corrosion coatings, wherein the method employs any one of the above-described high-efficiency, multi-functional testing devices for anti-corrosion coatings, comprising the following steps:

[0021] S1: Open the box cover, press the two No. 1 rods so that the No. 2 rod is inserted into the two No. 1 rods. The No. 1 spring extends and the length of the placement rod shortens. Based on this, remove the placement rod at a certain point so that the workpiece enters the annular area formed by the placement rods.

[0022] S2: At the start of the test, the placement rods are installed, the chamber cover is closed, the spray tower is started, the test chamber is filled with salt spray, the No. 1 motor drives the No. 1 circular plate to rotate, so that the workpiece rolls in the space formed by the circularly arranged placement rods, thereby making the workpiece and the placement rods constantly change the contact surface, ensuring that every part of the workpiece can come into contact with the salt spray.

[0023] S3: When it is necessary to observe the corrosion of the workpiece surface, control the pulley to rotate. The pulley can be driven by a motor, which drives the No. 1 belt to move. The No. 1 belt drives the No. 1 motor and the T-block fixed to it to move, so that the No. 1 circular plate and the placement rod move from the test chamber to the drying oven. During this process, the two opening and closing plates are squeezed and opened to allow the No. 1 circular plate and the placement rod to pass through. After passing through, the two opening and closing plates remain closed under the action of the torsion spring. Then the drying oven cleans and dries the workpiece before it is taken out for observation.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. The present invention discloses a high-efficiency, multi-functional testing device and method for anti-corrosion coatings. The device utilizes a workpiece placement system within the test chamber, capable of accommodating workpieces of varying sizes and ensuring that all parts of the workpieces are exposed to salt spray. This guarantees the suitability of workpieces of different sizes and ensures the accuracy of the test by maximizing the contact between the workpieces and the salt spray. After the salt spray test, the workpiece placement system allows the workpieces to be moved into an oven without opening the test chamber. The oven is equipped with a spraying mechanism and a heating mechanism, enabling the cleaning and drying of the tested workpieces. This reduces the complexity of the test, minimizes salt spray overflow, saves energy during subsequent tests, and reduces harm to human health.

[0026] 2. The high-efficiency multifunctional testing device and method for anti-corrosion coatings described in this invention can control the gap between the placement rods by controlling the expansion degree of the elastic airbag when the workpieces are of different sizes. This ensures that workpieces of different sizes will not fall through the gap between the placement rods (larger workpieces require larger gaps, and vice versa). Furthermore, the elastic airbag also provides protection when the workpieces are tumbling, preventing them from hitting the workpiece surface and reducing the impact on the experimental results.

[0027] 3. The high-efficiency multifunctional testing device and method for anti-corrosion coatings described in this invention, when it is necessary to observe the corrosion condition of the workpiece surface, controls the rotation of the pulley, which can be driven by a motor, to drive the first belt. The first belt drives the first motor and the T-shaped block fixed to it to move, so that the first circular plate and the placement rod move from the test chamber to the drying oven. During this process, the two opening and closing plates are squeezed, and the opening and closing plates open to allow the first circular plate and the placement rod to pass through. After passing through, the two opening and closing plates remain closed under the action of the torsion spring. Subsequently, the drying oven cleans and dries the workpiece before it is taken out for observation, which reduces the cumbersomeness of the test and reduces the overflow of salt spray. It also saves energy and reduces the harm to the human body during subsequent tests. Attached Figure Description

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] Figure 1 This is a perspective view of the present invention;

[0030] Figure 2 This is a diagram of the internal structure of the present invention;

[0031] Figure 3 This is a diagram of the internal structure of the present invention;

[0032] Figure 4 This is a top view of the interior of the test chamber of the present invention;

[0033] Figure 5 This is a cross-sectional view of the test chamber and drying oven of the present invention;

[0034] Figure 6 This is a top sectional view of the test chamber and drying oven of the present invention;

[0035] Figure 7 yes Figure 6 A magnified view of a portion at point A;

[0036] Figure 8 yes Figure 7 A magnified view of a portion at point B;

[0037] Figure 9 This is a partial structural schematic diagram of the workpiece placement system of the present invention;

[0038] Figure 10 This is a structural diagram of the driving mechanism of the present invention;

[0039] In the diagram: 1. Control system; 2. Test chamber; 21. Chamber cover; 22. Spray tower; 3. Drying oven; 4. Workpiece placement system; 41. Circular plate No. 1; 411. Connecting rod; 412. Annular plate; 42. Placement rod; 421. Elastic airbag; 422. Rod No. 1; 423. Rod No. 2; 424. Spring No. 1; 43. Motor No. 1; 44. Drive mechanism; 441. Pulley; 442. Belt No. 1; 443. T-block; 444. Barrier block; 5. Opening and closing plate; 6. Air passage. Detailed Implementation

[0040] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0041] like Figure 1 , Figure 2 As shown;

[0042] The present invention discloses a high-efficiency multifunctional testing device for anti-corrosion coatings, comprising: a salt spray testing machine; the salt spray testing machine comprising: a control system 1; a test chamber 2, the top of which is provided with a cover 21, and a spray tower 22 is provided inside the test chamber 2; an oven 3, which is fixedly connected to the test chamber 2, and is provided with a spraying mechanism and a heating mechanism; and a workpiece placement system 4, which is provided inside the test chamber 2. The workpiece placement system 4 can accommodate workpieces of different sizes and ensures that all parts of the workpieces can come into contact with the salt spray; and after the salt spray test, the workpiece placement system 4 can move the workpieces into the oven 3 without opening the test chamber 2.

[0043] In the development of anti-corrosion coatings, salt spray testing machines are often used to test their anti-corrosion performance. Salt spray testing machines are primarily used for environmental testing of metal products under artificially simulated salt spray conditions, conducting rapid corrosion tests. They play a crucial role in assessing a product's resistance to natural salt spray environments and, along with humidity and heat testing and mold testing, are collectively known as artificial climate environment "three-proof" testing equipment. Salt spray testing machines use salt spray corrosion to test the reliability of the tested samples. Salt spray refers to a diffused system composed of tiny salt-containing droplets in the atmosphere. Inside the salt spray testing machine, a corrosive solution is sprayed into a mist by compressed air. This mist surrounds the test sample within the test chamber. The test can be continuous or cyclical. The corrosion resistance of each sample is defined as the time it takes for corrosion to occur; the longer the time, the better the corrosion resistance.

[0044] In existing technologies, salt spray testing machines typically have a support frame on which workpieces are placed for the salt spray test. When the workpiece contacts the support, the contact area is not exposed to the salt spray, making it more susceptible to corrosion than other parts, thus affecting the observation results. This is especially true for smaller workpieces, which are inconvenient to place on the support and have a larger contact area with the support, further impacting the corrosion effect and the accuracy of the test. After the test, the salt spray testing machine needs to be opened to remove the workpiece, clean it, and dry it to observe the corrosion effect. This process is cumbersome. Furthermore, during the salt spray test, it is necessary to observe the changes on the sample surface over a specific period to determine the sample's corrosivity. Opening the salt spray testing machine causes salt spray loss, requiring re-spraying of salt spray for subsequent tests, which is not only energy-intensive but also poses a health hazard.

[0045] In this application, the control system 1 is used to control the operation of the entire device. Before the test begins, the cover 21 is opened and the workpiece is placed into the test chamber 2. The test chamber 2 is equipped with a spray tower 22 to generate salt spray. The test chamber 2 is equipped with a workpiece placement system 4, which can accommodate workpieces of different sizes and ensure that all parts of the workpiece can come into contact with the salt spray. This ensures that workpieces of different sizes can be accommodated and that all parts of the workpiece can come into contact with the salt spray, thus ensuring the accuracy of the test. After the salt spray test, the workpiece placement system 4 can move the workpiece into the drying oven 3 without opening the test chamber 2. The drying oven 3 is equipped with a spraying mechanism and a heating mechanism, which can clean and dry the workpiece after the test, reducing the complexity of the test and reducing the overflow of salt spray. This saves energy and reduces the harm to the human body during subsequent tests.

[0046] As a specific embodiment of the present invention, such as Figure 2 , Figure 3 , Figure 4 , Figure 6 As shown; the workpiece placement system 4 includes: a first circular plate 41, there are two first circular plates 41 and they are respectively set near the two side walls of the test chamber 2; placement rods 42, a number of placement rods 42 are set between the two first circular plates 41, and the placement rods 42 are distributed in a ring between the two first circular plates 41; a first motor 43, the output shaft of the first motor 43 is fixedly connected to the first circular plate 41;

[0047] Drive mechanism 44 is provided on the side walls of test chamber 2 and oven 3. Drive mechanism 44 enables the first circular plate 41 and the placement rod 42 to move back and forth between test chamber 2 and oven 3.

[0048] like Figure 5 , Figure 10As shown; the drive mechanism 44 includes: pulleys 441, which are rotatably connected to the two opposite side walls of the test chamber 2 and the oven 3; a first belt 442, which is provided between the two pulleys 441 on the side walls of the test chamber 2 and the oven 3 on the same side, and the first belt 442 passes through the test chamber 2 and the oven 3; a T-shaped block 443, which is fixedly connected to the first belt 442 on one side, and one end of the T-shaped block 443 is rotatably connected to one of the first circular plates 41; a first motor 43 is fixedly connected to the first belt 442 on the other side; and two opening and closing plates 5 are rotatably connected at the connection between the test chamber 2 and the oven 3, with the rotation centers of the two opening and closing plates 5 located at the top and bottom of the test chamber 2 respectively, and each of the rotation centers of the two opening and closing plates 5 is provided with a torsion spring.

[0049] like Figure 10 As shown; two blocking blocks 444 are fixedly connected to belt 442.

[0050] During operation, several placement rods 42 form a closed ring. Workpieces, both large and small, are placed within this ring of rods 42. At the start of the test, the test chamber 2 is filled with salt spray. Motor 43 drives a circular plate 41 to rotate, causing the workpiece to tumble within the space formed by the ring of rods 42. This continuously changes the contact surface between the workpiece and the rods 42, ensuring that every part of the workpiece comes into contact with the salt spray and guaranteeing the accuracy of the test. When it is necessary to observe the corrosion on the workpiece surface, the pulley 441 is rotated. The pulley 441, driven by a motor, moves two belts 442. T-shaped blocks 443 and motor 43 are respectively fixed to different belts 442. Therefore, the first belt 442 drives the first motor 43 and the T-block 443 fixed to it to move, so that the first circular plate 41 and the placement rod 42 move from the test chamber 2 to the oven 3. Under normal circumstances, the two opening and closing plates 5 are in a vertical state, so that the test chamber 2 and the oven 3 are independent of each other. During the process of the first circular plate 41 and the placement rod 42 moving from the test chamber 2 to the oven 3, the two opening and closing plates 5 are squeezed, the torsion spring stores the force, and the opening and closing plates 5 open to allow the first circular plate 41 and the placement rod 42 to pass through. After passing through, under the action of the torsion spring, the two opening and closing plates 5 remain in the closed state. Then the oven 3 cleans and dries the workpiece and then takes it out for observation. This reduces the cumbersomeness of the test, reduces the overflow of salt spray, saves energy and reduces the harm to the human body during the next test.

[0051] It should be noted that the No. 1 belt 442 is located inside the side walls of the test chamber 2 and the oven 3. Therefore, the side walls of the test chamber 2 and the oven 3 are provided with grooves. In order to ensure that the grooves do not allow salt spray to overflow from the test chamber 2 to the oven 3, two blocking blocks 444 are fixedly connected to each No. 1 belt 442. When the No. 1 circular plate 41 and the placement rod 42 are located in the test chamber 2 and the oven 3 respectively, the blocking block 444 corresponding to each No. 1 belt 442 can be located at the two opening and closing plates 5. The two opening and closing plates 5 together ensure the independence of the test chamber 2 and the oven 3.

[0052] As a specific embodiment of the present invention, such as Figure 6 , Figure 9 As shown; the two circular plates 41 are fixedly connected to each other on their adjacent sides, and the connecting rods 411 of the two circular plates 41 are connected to annular plates 412. The two annular plates 412 are connected to the two ends of the placement rod 42.

[0053] like Figure 6 , Figure 7 As shown; each placement rod 42 is fixedly provided with an elastic airbag 421 on its outer periphery;

[0054] like Figure 7 As shown; each placement rod 42 is a hollow structure and communicates with the interior of the elastic airbag 421; the T-shaped block 443, the first circular plate 41 connected to the T-shaped block 443, the corresponding connecting rod 411 and the corresponding annular plate 412 are all provided with air passages 6, and the air passages 6 communicate with the interior of the placement rod 42.

[0055] During operation, connecting rods 411 are fixedly connected to the adjacent sides of the two circular plates 41. Each connecting rod 411 of the two circular plates 41 is connected to annular plates 412. The two annular plates 412 are connected to both ends of the placement rods 42, making the annular space formed by the placement rods 42 permeable at both ends, facilitating the entry of salt spray. The annular plates 412, while ensuring permeability, also provide a certain degree of obstruction. When workpieces are of different sizes, the gap between the placement rods 42 can be controlled by adjusting the expansion of the elastic airbags 421, preventing workpieces of different sizes from falling off the placement rods 42. The gap between 2 will fall off (the gap is larger for larger workpieces, and smaller for smaller workpieces); and the elastic airbag 421 also plays a protective role when the workpiece rolls, preventing it from hitting the workpiece surface and reducing the impact on the experimental results; specifically, air holes can be opened on the side wall of the test chamber 2, and an external air pump can be connected. The airflow passes through the T-shaped block 443, the No. 1 circular plate 41 connected to the T-shaped block 443, the corresponding connecting rod 411, and the air passage 6 set in the corresponding annular plate 412, and enters the placement rod 42, and then enters the elastic airbag 421, so as to achieve the purpose of expanding the elastic airbag 421. Similarly, evacuation can cause the elastic airbag 421 to contract.

[0056] As a specific embodiment of the present invention, such as Figure 8 As shown; the placement rod 42 is composed of two rods 422 and one rod 423. The two ends of the rod 423 are nested inside the rods 422. The two ends of the rod 423 and the rod 422 are respectively fixedly connected to springs 424. The two rods 422 are embedded in the ring plate 412.

[0057] During operation, the placement rod 42 consists of two first rods 422 and one second rod 423. The two ends of the second rod 423 are nested within the first rods 422, and each end of the second rod 423 is fixedly connected to a first spring 424. This means the placement rod 42 is telescopic, and the two first rods 422 (i.e., the two ends of the placement rod 42) are embedded in the annular plate 412, i.e., a slot connection. When it is necessary to place a workpiece into the annular space formed by the placement rods 42 (by disassembling a placement rod 42 at a certain point to allow the workpiece to enter), or when the elastic airbag 421... When expansion and contraction cannot significantly change the gap between the placement rods 42 (when the workpiece is too large or too small, or when the placement rods 42 are disassembled or installed evenly), the gap between the placement rods 42 can be changed by removing or installing the placement rods 42. The specific operation is as follows: press the two No. 1 rods 422 so that the No. 2 rod 423 is inserted into the two No. 1 rods 422, the No. 1 spring 424 extends, and the length of the placement rod 42 shortens. Release the No. 1 rods 422, the No. 1 spring 424 returns to its deformation, and the placement rod 42 extends. The placement rods 42 can be removed and installed through the above operation.

[0058] A method for using a high-efficiency, multi-functional testing device for anti-corrosion coatings, wherein the method employs any one of the above-mentioned high-efficiency, multi-functional testing devices for anti-corrosion coatings, includes the following steps:

[0059] S1: Open the box cover 21, press the two No. 1 rods 422, so that the No. 2 rod 423 is inserted into the two No. 1 rods 422. The No. 1 spring 424 extends, and the length of the placement rod 42 shortens. Based on this, disassemble the placement rod 42 at a certain point, so that the workpiece enters the annular area formed by the placement rods 42.

[0060] S2: At the start of the test, the placement rods 42 are installed, the box cover 21 is closed, the spray tower 22 is started, the test chamber 2 is filled with salt spray, the No. 1 motor 43 drives the No. 1 circular plate 41 to rotate, so that the workpiece rolls in the space formed by the ring-shaped placement rods 42, thereby making the workpiece and the placement rods 42 continuously change the contact surface, ensuring that every part of the workpiece can come into contact with the salt spray.

[0061] S3: When it is necessary to observe the corrosion of the workpiece surface, control the pulley 441 to rotate. The pulley 441 can be driven by a motor, which drives the first belt 442 to move. The first belt 442 drives the first motor 43 and the T-block 443 fixed to it to move, so that the first circular plate 41 and the placement rod 42 move from the test chamber 2 to the drying oven 3. During this process, the two opening and closing plates 5 are squeezed and opened to allow the first circular plate 41 and the placement rod 42 to pass through. After passing through, the two opening and closing plates 5 remain closed under the action of the torsion spring. Then the drying oven 3 cleans and dries the workpiece before taking it out for observation.

Claims

1. A high-efficiency, multi-functional testing device for anti-corrosion coatings, comprising: Salt spray test chamber; The salt spray test chamber includes: Control system (1); Test chamber (2), the top of the test chamber (2) is provided with a box cover (21), and the interior of the test chamber (2) is provided with a spray tower (22); Its features include: Oven (3), which is fixedly connected to test chamber (2), and is equipped with a spraying mechanism and a heating mechanism inside the oven (3); The workpiece placement system (4) is provided in the test chamber (2). The workpiece placement system (4) can accommodate workpieces of different sizes and can ensure that all parts of the workpiece can come into contact with salt spray. After the salt spray test, the workpiece placement system (4) can move the workpiece into the oven (3) without opening the test chamber (2). The workpiece placement system (4) includes: Two circular plates (41) are provided and are respectively located near the two side walls of the test chamber (2); Placement rods (42): Several placement rods (42) are arranged between the two No. 1 circular plates (41), and the placement rods (42) are arranged in a ring between the two No. 1 circular plates (41); Motor No. 1 (43), the output shaft of which is fixedly connected to the circular plate No. 1 (41); The drive mechanism (44) is provided on the side wall of the test chamber (2) and the oven (3). The drive mechanism (44) enables the first circular plate (41) and the placement rod (42) to move back and forth between the test chamber (2) and the oven (3). A connecting rod (411) is fixedly connected to the side of each of the two circular plates (41) that are close to each other. The connecting rod (411) of each of the two circular plates (41) is connected to an annular plate (412). The two annular plates (412) are connected to the two ends of the placement rod (42). Each of the placement rods (42) is fixedly provided with an elastic airbag (421) on its outer periphery; Each of the placement rods (42) is a hollow structure and communicates with the interior of the elastic airbag (421); the driving mechanism (44) includes a T-shaped block (443), and the T-shaped block (443), the first circular plate (41) connected to the T-shaped block (443), the corresponding connecting rod (411) and the corresponding annular plate (412) are all provided with air passages (6), and the air passages (6) communicate with the interior of the placement rod (42).

2. The high-efficiency, multi-functional testing device for anti-corrosion coatings according to claim 1, characterized in that: The drive mechanism (44) includes: Pulleys (441) are rotatably connected to the two opposite side walls of the test chamber (2) and the drying oven (3); A No. 1 belt (442) is provided between two pulleys (441) on the side wall of the test chamber (2) and the oven (3) on the same side. The No. 1 belt (442) passes through the test chamber (2) and the oven (3). A T-shaped block (443) is fixedly connected to the first belt (442) on one side. One end of the T-shaped block (443) is rotatably connected to one of the first circular plates (41). The first motor (43) is fixedly connected to the first belt (442) on the other side. Two opening and closing plates (5) are rotatably connected to the connection between the test chamber (2) and the oven (3). The rotation centers of the two opening and closing plates (5) are located at the top and bottom of the test chamber (2) respectively, and torsion springs are provided at the rotation centers of the two opening and closing plates (5).

3. The high-efficiency, multi-functional testing device for anti-corrosion coatings according to claim 2, characterized in that: Two blocking blocks (444) are fixedly connected to the first belt (442).

4. The high-efficiency, multi-functional testing device for anti-corrosion coatings according to claim 3, characterized in that: The placement rod (42) consists of two No. 1 rods (422) and one No. 2 rod (423). The two ends of the No. 2 rod (423) are nested inside the No. 1 rods (422), and the two ends of the No. 2 rod (423) are fixedly connected to the No. 1 rods (424) with the No. 1 rods (422); the two No. 1 rods (422) are embedded in the annular plate (412).

5. A method for using a high-efficiency, multi-functional testing device for anti-corrosion coatings, the method being applicable to the high-efficiency, multi-functional testing device for anti-corrosion coatings as described in claim 4, characterized in that: Includes the following steps: S1: Open the box cover (21), press the two No. 1 rods (422) so that the No. 2 rod (423) is inserted into the two No. 1 rods (422), the No. 1 spring (424) extends, and the length of the placement rod (42) is shortened. Based on this, disassemble the placement rod (42) at a certain point so that the workpiece enters the annular area formed by the placement rods (42). S2: At the start of the test, the placement rods (42) are installed, the box cover (21) is closed, the spray tower (22) is started, the test chamber (2) is filled with salt spray, the No. 1 motor (43) drives the No. 1 circular plate (41) to rotate, so that the workpiece rolls in the space formed by the ring-shaped placement rods (42), thereby making the workpiece and the placement rods (42) constantly change the contact surface, ensuring that every part of the workpiece can come into contact with the salt spray; S3: When it is necessary to observe the corrosion of the workpiece surface, control the pulley (441) to rotate. The pulley (441) can be driven by the motor, which drives the first belt (442) to move. The first belt (442) drives the first motor (43) and the T-block (443) fixed thereto to move, so that the first circular plate (41) and the placement rod (42) move from the test chamber (2) to the oven (3). During this process, the two opening and closing plates (5) are squeezed and opened to allow the first circular plate (41) and the placement rod (42) to pass through. After passing through, the two opening and closing plates (5) remain closed under the action of the torsion spring. Then the oven (3) cleans and dries the workpiece before taking it out for observation.

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