Corrosion resistance test device for metal surface composite coating

Abstract

The utility model discloses a metal surface composite coating corrosion resistance test device which comprises a placing case and a test box arranged at the top end of the placing case, a solvent box is arranged at the top end of the test box, a sealing door is arranged at the front end of the test box, and the sealing door is rotationally connected with the left end of the test box through a plurality of hinges. A novel natural wind simulation device is additionally arranged at the right end of the test box of the corrosion resistance test device for the metal surface composite coating, so that a corrosion resistance test is carried out mostly by spraying a related solvent during a test; a plurality of metal objects of which the surfaces are sprayed with the composite coatings are put into a natural environment for use, at the moment, the natural wind simulation device can be used for simulating natural wind in the test box, and the simulated natural wind is blown to the composite coatings on the metal surfaces all the time; in this way, the metal surface composite coating can be subjected to a corrosion resistance test more close to the natural environment.

Description

Technical Field

[0001] The utility model belongs to the technical field related to corrosion resistance testing machines, and in particular relates to a corrosion resistance testing device for metal surface composite coatings. Background Art

[0002] With the widespread application of metal materials in industry and construction, the demand for metal surface protection is increasing. Composite coatings on metal surfaces have become an effective means to improve metal durability and extend service life due to their excellent corrosion resistance. However, in actual applications, these coatings are exposed to various corrosive environments, so accurate evaluation of their corrosion resistance is crucial.

[0003] The corrosion resistance test device for composite coatings on metal surfaces has emerged as a response to this need. It is designed to simulate the corrosive environments encountered in actual use and systematically test the corrosion resistance of coatings. This device simulates corrosive environments such as salt spray, acid and alkali solutions, and high humidity to conduct comprehensive tests on coatings and evaluate their performance under different corrosion conditions. This device not only allows for a comprehensive assessment of the coating by controlling different solvent and humidity conditions, but also ensures a safe and environmentally friendly testing process through a waste liquid collection and treatment system.

[0004] However, the corrosion resistance test device for metal surface composite coatings mainly sprays different solvents onto the metal surface composite coatings, observes the corrosion of the coatings, measures the corrosion rate, evaluates the protective effect of the coatings, and visually inspects the surface of the coatings to see if there is peeling, blistering, or discoloration, so as to achieve the purpose of the corrosion resistance test. However, many composite coatings tested for corrosion resistance will eventually be put into use in natural environments, and the long-term action of natural wind on the composite coatings will also cause corrosion of the composite coatings. Therefore, when conducting corrosion resistance tests, it is particularly important to simulate the corrosion of the composite coatings under long-term natural wind conditions. Therefore, there is an urgent need for a device that can simulate natural wind at all times during corrosion resistance tests to increase the breadth and accuracy of corrosion resistance tests. Utility Model Content

[0005] The purpose of the present utility model is to provide a corrosion resistance test device for metal surface composite coatings, so as to solve the problem that many composite coatings subjected to corrosion resistance tests proposed in the above background technology will eventually be put into use in natural environments, and the natural wind acting on the composite coatings all year round will also cause corrosion of the composite coatings. Therefore, when conducting corrosion resistance tests, it is particularly important to simulate the corrosion of the composite coatings under long-term natural wind conditions.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a metal surface composite coating corrosion resistance test device, comprising a mounting chassis and a test box disposed on top of the mounting chassis, a solvent box disposed on the top of the test box, a sealed door disposed at the front end of the test box, the sealed door being rotatably connected to the left end of the test box via a plurality of hinges, a window disposed within the sealed door, a transparent protective glass being fixed within the window, and a natural wind simulation device disposed at the right end of the test box and within its interior;

[0007] The natural wind simulation device includes a turbine hood, an air inlet, a blower motor, an electric heating box and an air supply pipe. The turbine hood is fixed on the outer wall of the right end of the test box. The right end of the turbine hood is provided with a blower motor. The rear end of the turbine hood is provided with an electric heating box. The rear end of the electric heating box is provided with an air supply pipe.

[0008] Preferably, a turbofan is provided inside the turbo blower hood, the motor shaft of the blower motor is fixedly connected to the turbofan, the blower motor can drive the turbofan to rotate at high speed through the motor shaft, a heating wire is provided inside the electric heating box, and a temperature adjustment knob is provided on the top of the electric heating box.

[0009] Preferably, the natural wind simulation device also includes an air collecting pipe and air outlet holes. A sealing socket is provided on the rear side of the air supply pipe, and the sealing socket is located inside the right end of the test box. The air collecting pipe is inserted into the sealing socket, and the rear end of the air supply pipe is connected to the right end of the air collecting pipe. The main body of the air supply pipe is located on the rear side of the test box, and a plurality of air outlet holes are equidistantly provided inside the front end of the air supply pipe.

[0010] Preferably, the four corners of the bottom of the placement box are provided with placement feet, the lower side of the right end center of the placement box is provided with a waste valve, and the upper side of the right end center of the test box is provided with a humidification valve.

[0011] Preferably, the top of the placement chassis is densely covered with leakage holes, the test box is connected to the interior of the placement chassis through the leakage holes, a waste liquid collection tank is provided inside the placement chassis, and the waste liquid collection tank is connected to the waste valve.

[0012] Preferably, a test rack is provided inside the lower center of the test box. The test rack is arranged horizontally inside the test box and is located at the lower side of the humidification valve.

[0013] Preferably, an acidic solvent nozzle is provided at the center of the bottom end of the solvent box, a brine solvent nozzle is provided on the left side of the acidic solvent nozzle, and an alkaline solvent nozzle is provided on the right side of the acidic solvent nozzle. The brine solvent nozzle, the acidic solvent nozzle and the alkaline solvent nozzle are all located on the upper side of the center inside the test box.

[0014] Preferably, a saline solvent bottle, an acidic solvent bottle and an alkaline solvent bottle are respectively provided inside the solvent box, and the saline solvent bottle, the acidic solvent bottle and the alkaline solvent bottle are respectively connected to the saline solvent nozzle, the acidic solvent nozzle and the alkaline solvent nozzle. A controller is provided inside the right side of the front center of the solvent box, and a replacement door is provided on the left side of the controller.

[0015] Compared with the existing technology, the present invention provides a metal surface composite coating corrosion resistance test device, which has the following beneficial effects:

[0016] The utility model adds a novel natural wind simulation device to the right end of the test box of the metal surface composite coating corrosion resistance test device. After the composite coating is sprayed on the metal surface, the metal will be placed on the test stand inside the test box. During the test, relevant solvents need to be sprayed on the composite coating on the metal surface according to the test requirements to evaluate the corrosion resistance of the metal surface coating in various corrosive environments. However, most of the tests are carried out by spraying relevant solvents to carry out corrosion resistance tests, and many metal objects with composite coatings sprayed on their surfaces will be put into use in natural environments. At this time, the natural wind simulation device can be used to simulate natural wind inside the test box. The simulated natural wind blows on the composite coating on the metal surface all the time, so that the metal surface composite coating can be closer to the natural environment for corrosion resistance tests, and the natural wind simulation device can also change the temperature of the natural wind, so that the natural wind can have the characteristics of each season to increase the simulation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the external three-dimensional structure of a metal surface composite coating corrosion resistance testing device of the present utility model.

[0018] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the test box of the present utility model.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the natural wind simulation device of the present invention.

[0020] In the figure: 1. Place the foot; 2. Place the chassis; 3. Sealed door; 4. Window; 5. Transparent protective glass; 6. Solvent box; 7. Replacement door; 8. Controller; 9. Humidification valve; 10. Natural wind simulation device; 11. Test chamber; 12. Waste valve; 13. Leakage hole; 14. Test stand; 15. Salt water solvent nozzle; 16. Acid solvent nozzle; 17. Alkaline solvent nozzle; 18. Air collecting pipe; 19. Air outlet; 20. Turbine blower hood; 21. Air inlet; 22. Blower motor; 23. Electric heating box; 24. Air supply pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides Figure 1-3 The metal surface composite coating corrosion resistance test device shown in the figure includes a mounting chassis 2 and a test box 11 arranged on the top of the mounting chassis 2, a solvent box 6 is arranged on the top of the test box 11, a sealed door 3 is arranged at the front end of the test box 11, the sealed door 3 is rotatably connected to the left end of the test box 11 through multiple hinges, a window 4 is arranged inside the sealed door 3, a transparent protective glass 5 is fixed inside the window 4, a mounting foot 1 is provided at each of the four corners of the bottom end of the mounting chassis 2, a waste valve 12 is provided on the lower side of the right end center of the mounting chassis 2, a humidification valve 9 is provided on the upper side of the right end center of the test box 11, a saline solvent bottle, an acid solvent bottle and an alkaline solvent bottle are respectively arranged inside the solvent box 6, the saline solvent bottle, the acid solvent bottle and the alkaline solvent bottle are respectively connected to the saline solvent nozzle 15, the acid solvent nozzle 16 and the alkaline solvent nozzle 17, the solvent box 6 A controller 8 is provided inside the right side of the front center, and a replacement door 7 is provided on the left side of the controller 8. When using the metal surface composite coating corrosion resistance test device, it is first necessary to stably and securely place the metal surface composite coating corrosion resistance test device by placing the placement foot 1 at the bottom of the chassis 2, and then it is necessary to open the replacement door 7, and install the saline solvent bottle, acid solvent bottle and alkaline solvent bottle to the corresponding positions inside the solvent box 6, so that the saline solvent bottle, acid solvent bottle and alkaline solvent bottle are respectively connected to the saline solvent nozzle 15, acid solvent nozzle 16 and alkaline solvent nozzle 17 through the pressure pump, and then reclose the replacement door 7, and then it is necessary to open the sealing door 3, and place the metal object with the composite coating sprayed on the surface on the test stand 14, and then reclose the sealing door 3 and prepare for the corrosion resistance test.

[0023] like Figure 1 and Figure 2As shown, the top of the mounting chassis 2 is densely covered with leakage holes 13, and the test box 11 is connected to the interior of the mounting chassis 2 through the leakage holes 13. A waste liquid collection tank is provided inside the mounting chassis 2, and the waste liquid collection tank is connected to the waste valve 12. A test stand 14 is provided inside the lower center of the test box 11. The test stand 14 is horizontally arranged inside the test box 11. The test stand 14 is located on the lower side of the humidification valve 9. An acid solvent nozzle 16 is provided at the center of the bottom end of the solvent box 6. A brine solvent nozzle 15 is provided on the left side of the acid solvent nozzle 16, and an alkaline solvent nozzle 17 is provided on the right side of the acid solvent nozzle 16. The brine solvent nozzle 15, the acid solvent nozzle 16 and the alkaline solvent nozzle 17 are all located on the upper side of the center of the test box 11. During the corrosion resistance test, it is necessary to spray the corresponding solvent onto the composite coating on the metal surface according to the test requirements. For example, when a seawater corrosion test is required, the pressure pump on the brine solvent bottle needs to be started through the controller 8, so that the pressure pump increases the pressure in the brine solvent bottle. In this way, the brine in the brine solvent bottle will be evenly sprayed on the composite coating through the brine solvent nozzle 15. The corrosion of the coating will be observed for a certain period of time, and the corrosion rate will be measured to evaluate the protective effect of the coating. When it is necessary to test the corrosion resistance in a high humidity environment, it is necessary to humidify the inside of the test box 11 through the humidification valve 9 so that the air humidity inside the test box 11 meets the humidity required by the test and maintain the humidity. In this way, the corrosion of the coating can be observed after a period of time, and the corrosion rate can be measured to evaluate the protective effect of the coating. The principles and operating steps of the acidic and alkaline corrosion resistance tests are the same, so that various corrosion environments can be simulated to meet the requirements of the corrosion resistance test.

[0024] like Figure 1 and Figure 3As shown, a natural wind simulation device 10 is provided at the right end of the test box 11 and inside thereof. The natural wind simulation device 10 includes a turbine blast hood 20, an air inlet 21, a blower motor 22, an electric heating box 23 and an air supply pipe 24. The turbine blast hood 20 is fixed to the outer wall of the right end of the test box 11. A blower motor 22 is provided at the right end of the turbine blast hood 20. An electric heating box 23 is provided at the rear end of the turbine blast hood 20. An air supply pipe 24 is provided at the rear end of the electric heating box 23. A turbo fan is provided inside the turbine blast hood 20. The motor shaft of the blower motor 22 is fixed to the turbo fan. The blower motor 22 can drive the turbo fan to rotate at high speed through the motor shaft. The electric heating box 23 is provided with a heating wire, and the top of the electric heating box 23 is provided with a temperature adjustment knob. The natural wind simulation device 10 also includes an air collecting pipe 18 and an air outlet 19. A sealing socket is provided on the rear side of the air supply pipe 24. The sealing socket is located inside the right end of the test box 11. The air collecting pipe 18 is plugged into the sealing socket. The rear end of the air supply pipe 24 is connected to the right end of the air collecting pipe 18. The main part of the air supply pipe 24 is located at the rear side of the test box 11. A plurality of outlets are equidistantly provided inside the front end of the air supply pipe 24. Air hole 19, when the composite coating on the surface of the metal object placed on the test frame 14 needs to be subjected to corrosion resistance test in a natural wind environment for a long time, it is necessary to start the natural wind simulation device 10. Specifically, it is necessary to start the blower motor 22. The blower motor 22 drives the turbo fan inside the turbine blower cover 20 to rotate at high speed through the motor shaft. The turbo fan continuously draws external air through the air inlet 21 and delivers it to the inside of the electric heating box 23 through the air outlet. At this time, it is necessary to adjust the temperature of the heating wire inside the electric heating box 23 through the temperature adjustment knob so that the temperature reaches the required simulation temperature. The temperature of the simulated natural wind will cause the airflow blown into the electric heating box 23 to be transported to the air collecting pipe 18 through the air supply pipe 24, and then the air collecting pipe 18 will continuously blow air to the composite coating on the surface of the metal object through the multiple air outlets 19 inside the front end, and control the output power of the blower motor 22 to change the wind force blown out of the air outlet 19, so that the simulated natural wind is closer to the natural environment, so that the air outlet 19 can continuously blow natural air to the composite coating, thereby increasing the corrosion resistance test effect.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A metal surface composite coating corrosion resistance test device, comprising a housing (2) and a test box (11) arranged at the top of the housing (2), a solvent box (6) being arranged at the top of the test box (11), a sealing door (3) being arranged at the front end of the test box (11), the sealing door (3) being rotatably connected to the left end of the test box (11) by a plurality of hinges, a window (4) being arranged inside the sealing door (3), and a transparent protective glass (5) being fixed inside the window (4), characterized in that: A natural wind simulation device (10) is provided at the right end of the test box (11) and inside thereof; The natural wind simulation device (10) comprises a turbine blower hood (20), an air inlet (21), a blower motor (22), an electric heating box (23) and an air supply pipe (24); the turbine blower hood (20) is fixed on the outer wall of the right end of the test box (11); the blower motor (22) is provided at the right end of the turbine blower hood (20); the electric heating box (23) is provided at the rear end of the turbine blower hood (20); and the air supply pipe (24) is provided at the rear end of the electric heating box (23).

2. A metal surface composite coating corrosion resistance testing device according to claim 1, characterized in that: A turbofan is provided inside the turbo blower cover (20), a motor shaft of the blower motor (22) is fixedly connected to the turbofan, and the blower motor (22) can drive the turbofan to rotate at high speed through the motor shaft, a heating wire is provided inside the electric heating box (23), and a temperature adjustment knob is provided on the top of the electric heating box (23).

3. A metal surface composite coating corrosion resistance testing device according to claim 2, characterized in that: The natural wind simulation device (10) further comprises an air collecting pipe (18) and an air outlet (19); a sealing socket is provided on the rear side of the air supply pipe (24); the sealing socket is located inside the right end of the test box (11); the air collecting pipe (18) is plugged into the sealing socket; the rear end of the air supply pipe (24) is connected to the right end of the air collecting pipe (18); the main body of the air supply pipe (24) is located inside the rear side of the test box (11); a plurality of air outlets (19) are equidistantly provided inside the front end of the air supply pipe (24).

4. A metal surface composite coating corrosion resistance testing device according to claim 1, characterized in that: The four corners of the bottom of the placing case (2) are all provided with placing feet (1), a waste valve (12) is provided at the lower side of the right end center of the placing case (2), and a humidifying valve (9) is provided at the upper side of the right end center of the test box (11).

5. A metal surface composite coating corrosion resistance testing device according to claim 4, characterized in that: The top of the placement case (2) is densely covered with leakage holes (13), the test box (11) is connected to the interior of the placement case (2) through the leakage holes (13), and a waste liquid collection tank is provided inside the placement case (2), and the waste liquid collection tank is connected to the waste discharge valve (12).

6. A metal surface composite coating corrosion resistance testing device according to claim 5, characterized in that: A test frame (14) is provided inside the lower center of the test box (11). The test frame (14) is arranged horizontally inside the test box (11) and is located below the humidification valve (9).

7. The corrosion resistance testing device for metal surface composite coating according to claim 1, characterized in that: An acidic solvent nozzle (16) is provided at the center of the bottom end of the solvent box (6), a salt water solvent nozzle (15) is provided on the left side of the acidic solvent nozzle (16), and an alkaline solvent nozzle (17) is provided on the right side of the acidic solvent nozzle (16). The salt water solvent nozzle (15), the acidic solvent nozzle (16) and the alkaline solvent nozzle (17) are all located on the upper side of the center inside the test box (11).

8. A metal surface composite coating corrosion resistance testing device according to claim 7, characterized in that: A saline solvent bottle, an acidic solvent bottle, and an alkaline solvent bottle are respectively arranged inside the solvent box (6), and the saline solvent bottle, the acidic solvent bottle, and the alkaline solvent bottle are respectively connected to a saline solvent nozzle (15), an acidic solvent nozzle (16), and an alkaline solvent nozzle (17). A controller (8) is arranged inside the right side of the center of the front end of the solvent box (6), and a replacement door (7) is arranged on the left side of the controller (8).

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