Progressive loading device based on AF coating adhesive force test
By introducing a protective sealing cover and multiple environmental simulation mechanisms into the AF coating adhesion testing device, the problem of testing accuracy caused by the single environment in the existing technology is solved, and accurate testing under high temperature, humidity and high pressure environments is realized.
Patent Information
- Application Number
- CN202511841903.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-02-13
AI Technical Summary
The progressive loading device based on AF coating adhesion testing in the prior art cannot be tested in high temperature, humid or high pressure environments, which leads to a decrease in the accuracy of adhesion testing.
A device including a protective sealing cover was designed, equipped with an air supply and humidification testing mechanism, a thermal environment simulation testing mechanism, and a pressure regulation mechanism, which can simulate high temperature, humidity, and high pressure conditions in a closed environment to test the adhesion of the coating layer.
It enables coating adhesion testing in high-temperature, humid, and high-pressure environments, improving testing accuracy, protecting testing instruments, and extending their service life.
Smart Images
Figure CN121521666A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of film testing technology, specifically to a progressive loading device based on AF coating adhesion testing. Background Technology
[0002] The progressive loading device based on AF coating adhesion testing, also known as the AF coating adhesion scratch tester, is essentially a progressive loading mechanism that works in conjunction with a sample transmission system. During testing, the sample stage moves the AF-coated sample at a constant speed, while the loading system drives the diamond probe to gradually increase the vertical load, smoothly increasing it from a low load to the coating peeling threshold. This device can accurately capture the critical point of coating failure and peeling from elastic deformation, record the corresponding critical load, and quantitatively evaluate the bonding strength between the coating and the substrate, especially for strength testing of new materials. It is well-suited to the thin and easily damaged characteristics of AF coatings, providing scientific data support for coating process optimization and quality inspection.
[0003] In existing technologies, progressive loading devices based on AF coating adhesion testing are generally exposed in the workspace when testing AF coatings. Therefore, the adhesion testing of AF coatings is not conducted in a closed environment. This results in the inability to test AF coating adhesion in high-temperature, humid, or high-pressure environments, leading to a relatively limited testing environment. Consequently, the adhesion of AF coatings in high-temperature, humid, or high-pressure environments does not reach the test value, reducing the accuracy of AF coating adhesion testing. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides a progressive loading device based on AF coating adhesion testing. This solves the problem that existing progressive loading devices based on AF coating adhesion testing cannot perform AF coating adhesion testing in various environments, resulting in the AF coating adhesion not reaching the test value in special environments, thus reducing the accuracy of AF coating adhesion testing.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a progressive loading device based on AF coating adhesion testing, comprising a scratch tester, wherein a protective sealing cover is provided on the top of the scratch tester to protect the structure of the scratch tester and maintain the seal of the space formed by the scratch tester and the protective sealing cover; mounting mechanisms are provided on both sides of the scratch tester to install the protective sealing cover; an air supply and humidification testing mechanism is provided outside the protective sealing cover to provide gas and generate humidified air; a thermal environment simulation testing mechanism is provided outside the protective sealing cover to provide a simulated high-temperature environment; a pressure regulating mechanism is provided on one side of the protective sealing cover located in the thermal environment simulation testing mechanism to regulate the air pressure inside the protective sealing cover; and a transparent observation window is fixedly connected to one side of the protective sealing cover.
[0006] Preferably, the mounting mechanism includes a mounting housing, inside which are arranged multiple tension springs, and inside which a limiting mounting plate is slidably connected, and on the side of the limiting mounting plate away from the tension springs are fixedly connected multiple inserts, and on the side of the mounting housing away from the limiting mounting plate is fixedly connected an automatic valve, and on the top of the mounting housing is fixedly connected an exhaust valve, and on the bottom of both sides of the protective sealing cover are multiple fixing holes, and on the side of the automatic valve away from the mounting housing is a detachably connected connecting pipe, and on the top of the scratch tester is a slot, and the bottom of the protective sealing cover is disposed inside the slot.
[0007] Preferably, the air supply and humidification testing mechanism includes an air pump, the air pump is fixedly connected to the outside of the protective sealing cover, the output end of the air pump is fixedly connected to a connecting air pipe, a water tank is fixedly connected to the outside of the protective sealing cover away from the air pump, a water injection pipe is fixedly connected to the top of the water tank, a vent pipe is fixedly connected to the top of the outside of the water tank, and the top of the vent pipe is fixedly connected to the top of the protective sealing cover.
[0008] Preferably, the thermal environment simulation test mechanism includes a fixed base, the fixed base being externally fixedly connected to the outer bottom end of the protective sealing cover, a retaining spring being fixedly connected to the inner bottom end of the fixed base, a limiting base plate being slidably connected inside the fixed base, a retaining seat being fixedly connected to the top of the limiting base plate, a fixed top seat being fixedly connected to the outer top end of the protective sealing cover, a hot gas inlet pipe being threadedly connected to the top of the fixed top seat, the end of the hot gas inlet pipe away from the fixed top seat being fixedly connected to the top of the protective sealing cover, a heating and insulation pipe being provided between the fixed top seat and the retaining seat, an electric heating wire being provided inside the heating and insulation pipe, a connecting pipe being fixedly connected to the outer bottom end of the fixed base, a control valve being fixedly connected to the bottom of the connecting pipe, and the end of the control valve away from the connecting pipe being fixedly connected to the middle of the connecting gas pipe.
[0009] Preferably, the pressure regulating mechanism includes a mounting cylinder, one end of which is fixedly connected to the side of the protective sealing cover located in the thermal environment simulation test mechanism. A tension spring is installed inside the mounting cylinder, and a blocking piston is slidably connected inside the mounting cylinder. A mounting ring is fixedly connected to the outside of the mounting cylinder, and the mounting ring has multiple vent holes inside. A rotating ring is rotatably connected to the outside of the mounting ring, and the rotating ring has multiple alignment holes inside. Multiple beveled teeth are fixedly connected to the outside of the alignment holes. A connecting ring is fixedly connected to the side of the rotating ring away from the protective sealing cover, and a torsion spring is installed inside the connecting ring. A fixed crank is fixedly connected to the side of the mounting cylinder away from the protective sealing cover, and a fixed sleeve is fixedly connected to the end of the fixed crank away from the mounting cylinder. A rotating shaft is rotatably connected inside the fixed sleeve, and a torsion spring is installed inside the fixed sleeve. A locking arm is fixedly connected to the side of the rotating shaft away from the fixed crank.
[0010] Preferably, one side of the tension spring is fixedly connected to one side of the mounting housing, and the other end of the tension spring is fixedly connected to the side of the limiting mounting plate away from the insertion post.
[0011] Preferably, one end of the clamping spring is fixedly connected to the inner bottom end of the fixed base, and the other end of the clamping spring is fixedly connected to the bottom of the limiting base plate.
[0012] Preferably, a pressing and rotating handle is fixedly connected to the outside of the clamping arm, and the torsion spring is sleeved on the outside of the mounting cylinder.
[0013] Preferably, one end of the torsion spring is fixedly connected to the inside of the connecting ring, and the other end of the torsion spring is fixedly connected to the outside of the mounting cylinder.
[0014] Preferably, one end of the second tension spring is fixedly connected to the inside of the mounting cylinder, and the other end of the second tension spring is fixedly connected to the side of the blocking piston near the protective sealing cover.
[0015] This invention provides a progressive loading device based on AF coating adhesion testing. It has the following advantages: 1. This invention, through the cooperation of a gas supply and humidification testing mechanism, a thermal environment simulation testing mechanism, and a pressure regulation mechanism, enables adhesion testing of AF coating layers in humid, high-temperature, and high-pressure environments, thereby obtaining the adhesion values of AF coating layers in humid, high-temperature, and high-pressure environments, and thus improving the accuracy of AF coating layer adhesion testing.
[0016] 2. This invention uses an installation mechanism to install a protective sealing cover on the top of the scratch tester, thereby protecting the electronic components on the scratch tester and preventing damage to the equipment from impacts. At the same time, the air supply and humidification testing mechanism can ventilate into the protective sealing cover and use liquid filtration to allow relatively clean gas to enter the interior of the protective sealing cover, thereby preventing dust from entering the scratch tester and thus improving the service life of the scratch tester. Attached Figure Description
[0017] Figure 1 The three-dimensional representation of the present invention Figure 1 ; Figure 2 The three-dimensional representation of the present invention Figure 2 ; Figure 3 This is a schematic diagram of the slot structure in this invention; Figure 4 This is a schematic diagram of the structure for mounting the outer casing in this invention; Figure 5 This is a schematic diagram of the fixed insertion hole in the present invention; Figure 6 This is a schematic diagram of the thermal environment simulation testing mechanism in this invention; Figure 7 This is a schematic diagram of the rotating ring in this invention; Figure 8 This is a schematic diagram of the mounting ring structure in this invention; Figure 9 This is a schematic diagram of the internal structure of the mounting cylinder in this invention; Figure 10 This is a schematic diagram of the internal structure of the fixing sleeve in this invention.
[0018] The components include: 1. Scratch tester; 2. Protective sealing cover; 3. Mounting mechanism; 301. Mounting housing; 302. Tension spring 1; 303. Limiting mounting plate; 304. Insert post; 305. Automatic valve; 306. Exhaust valve; 307. Fixing hole; 308. Connecting pipe; 309. Slot; 4. Air supply and humidification testing mechanism; 401. Air pump; 402. Connecting air pipe; 403. Water tank; 404. Water injection pipe; 405. Vent pipe; 5. Thermal environment simulation testing mechanism; 501. Fixing base; 502. Clamping spring; 503. Limiting base plate; 504. Clamping base; 50 5. Fixed top seat; 506. Hot air inlet pipe; 507. Heating and insulation pipe; 508. Electric heating wire; 509. Connecting pipe; 510. Control valve; 6. Pressure regulating mechanism; 601. Mounting cylinder; 602. Tension spring II; 603. Blocking piston; 604. Mounting ring; 605. Vent hole; 606. Rotating ring; 607. Alignment hole; 608. Angled retaining tooth; 609. Connecting ring; 610. Torsion spring I; 611. Fixed crank; 612. Fixed sleeve; 613. Rotating shaft; 614. Torsion spring II; 615. Clamping arm; 616. Press-to-rotate handle; 7. Transparent observation window. Detailed Implementation
[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Please see the appendix Figure 1 - Appendix Figure 10This invention provides a progressive loading device for AF coating adhesion testing, including a scratch tester 1. A protective sealing cover 2 is mounted on the top of the scratch tester 1. The scratch tester 1 employs a progressive loading device, linearly increasing the normal load in a single test to simulate the gradual accumulation of stress in actual use. This accurately captures the critical point of the coating from elastic deformation to failure and peeling, directly quantifying and evaluating the bonding strength between the coating and the substrate, especially for testing new materials. Therefore, the scratch tester 1 is a progressive loading device for AF coating adhesion testing. The scratch tester 1 is existing technology and will not be described in detail here. The protective sealing cover 2 protects the structure of the scratch tester 1 and maintains the scratch resistance. The scratch tester 1 and the protective sealing cover 2 form a sealed space. The scratch tester 1 is equipped with mounting mechanisms 3 on both sides. The mounting mechanisms 3 are used to install the protective sealing cover 2. The protective sealing cover 2 is equipped with a gas supply and humidification test mechanism 4 outside. The gas supply and humidification test mechanism 4 is used to provide gas and create humid air. The protective sealing cover 2 is equipped with a thermal environment simulation test mechanism 5 outside. The thermal environment simulation test mechanism 5 is used to provide a simulated high temperature environment. The protective sealing cover 2 is equipped with a pressure regulating mechanism 6 on one side of the thermal environment simulation test mechanism 5. The pressure regulating mechanism 6 is used to regulate the air pressure inside the protective sealing cover 2. A transparent observation window 7 is fixedly connected to one side of the protective sealing cover 2. The transparent observation window 7 facilitates observation of the test process.
[0021] The mounting mechanism 3 includes a mounting housing 301, which provides the mounting position. Multiple tension springs 302 are installed inside the mounting housing 301. A limiting mounting plate 303 is slidably connected inside the mounting housing 301, serving a limiting function. Multiple inserts 304 are fixedly connected to the side of the limiting mounting plate 303 away from the tension springs 302. An automatic valve 305 is fixedly connected to the side of the mounting housing 301 away from the limiting mounting plate 303, controlling the opening and closing of the air passage. An exhaust valve 306 is fixedly connected to the top of the mounting housing 301, allowing for exhaust. The bottom sides of the protective sealing cover 2 are... The device has multiple fixing holes 307. When no air is introduced, the mounting housing 301, under the tension of the tension spring 302, allows the insertion post 304 to move out of the fixing hole 307. After the insertion post 304 is inserted into the fixing hole 307, the protective sealing cover 2 can be installed on the top of the scratch tester 1. The automatic valve 305 is detachably connected to a connecting pipe 308 on the side away from the mounting housing 301. The connecting pipe 308 can provide air passage. The top of the scratch tester 1 has a slot 309. After the protective sealing cover 2 is inserted into the slot 309, the protective sealing cover 2 can be installed inside the slot 309. The bottom of the protective sealing cover 2 is located inside the slot 309. One side of the tension spring 302 is fixedly connected to one side of the mounting housing 301, and the other end of the tension spring 302 is fixedly connected to the side of the limiting mounting plate 303 away from the insertion post 304. When installing the protective sealing cover 2, first insert the protective sealing cover 2 into the slot 309. Due to the tension of the tension spring 302, part of the insertion post 304 has retracted into the mounting housing 301. Then, install the bottom of the connecting pipe 308 inside the automatic valve 305, open the automatic valve 305, and start the air supply and humidification test mechanism 4. The air pressure generated by the air supply and humidification test mechanism 4 can push the limiting mounting plate 304 away from the insertion post 304. 3. Move towards the protective sealing cover 2, thereby driving the insert 304 to move out of the mounting housing 301 and insert the insert 304 into the fixed socket 307. At this time, the installation of the protective sealing cover 2 can be completed. When disassembling the protective sealing cover 2, open the exhaust valve 306 to discharge the gas inside the mounting housing 301. At this time, the limiting mounting plate 303 and the insert 304 move into the mounting housing 301 under the action of the tension spring 302, and cause the insert 304 to move out of the fixed socket 307. At this time, the protective sealing cover 2 can be pulled out from the slot 309, thereby realizing the disassembly of the protective sealing cover 2.
[0022] The air supply and humidification testing mechanism 4 includes an air pump 401, which serves as the power source for supplying gas. The air pump 401 is fixedly connected to the outside of the protective sealing cover 2. A connecting air pipe 402 is fixedly connected to the output end of the air pump 401, serving to connect the air passage. A water tank 403 is fixedly connected to the outside of the protective sealing cover 2, away from the air pump 401. The water tank 403 contains liquid. When gas enters the water tank 403 and then the interior of the protective sealing cover 2, it increases the humidity inside the cover 2. Simultaneously, the liquid inside the water tank 403 filters dust from the air. A solenoid valve is installed between the water tank 403 and the connecting air pipe 402 to control the gas flow. This solenoid valve only allows air to pass through and cannot... A water tank 403 is fixedly connected to a water injection pipe 404, with a sealing cap threaded onto the top. The water injection pipe 404 facilitates the addition of liquid. A vent pipe 405 is fixedly connected to the top of the water tank 403, with the top of the vent pipe 405 fixedly connected to the top of the protective sealing cover 2. When humid air is added to the space between the scratch tester 1 and the protective sealing cover 2, the air pump 401 is started and the solenoid valve is opened. At this time, the gas in the air pipe 402 can enter the interior of the water tank 403. The gas passing through the liquid inside the water tank 403 can enter the interior of the protective sealing cover 2 through the vent pipe 405, thereby adding moisture to the interior of the protective sealing cover 2 to simulate the adhesion test of the AF coating layer in a humid environment.
[0023] The thermal environment simulation test mechanism 5 includes a fixed base 501, which provides an installation position. The fixed base 501 is externally fixedly connected to the bottom of the outer side of the protective sealing cover 2. A retaining spring 502 is fixedly connected to the bottom of the inner side of the fixed base 501. A limiting base plate 503 is slidably connected inside the fixed base 501, which has a limiting function. A retaining seat 504 is fixedly connected to the top of the limiting base plate 503, which prevents the retaining seat 504 from completely moving out of the interior of the fixed base 501. A fixed top seat 505 is fixedly connected to the top of the outer side of the protective sealing cover 2. A hot air inlet pipe 506 is threadedly connected to the top of the fixed top seat 505. The hot air inlet pipe 506 has a ventilation function and is located away from the fixed base 2. One end of the top seat 505 is fixedly connected to the top of the protective sealing cover 2. A heating and heat preservation tube 507 is provided between the fixed top seat 505 and the pressing seat 504. An electric heating wire 508 is provided inside the heating and heat preservation tube 507. When the electric heating wire 508 is turned on, it can generate heat, thereby heating the air entering the heating and heat preservation tube 507. The pressing spring 502 can provide a push to the limiting base plate 503 and the pressing seat 504, thereby pressing the heating and heat preservation tube 507 between the fixed top seat 505 and the pressing seat 504, thus realizing the installation of the heating and heat preservation tube 507. A connecting pipe 509 is fixedly connected to the bottom of the fixed seat 501. The connecting pipe 509 has the function of ventilation. A control valve 510 is fixedly connected to the bottom of the connecting pipe 509. 10 can control the opening and closing of the gas path. The end of the control valve 510 away from the connecting pipe 509 is fixedly connected to the middle of the connecting gas pipe 402. One end of the clamping spring 502 is fixedly connected to the bottom of the fixed base 501, and the other end of the clamping spring 502 is fixedly connected to the bottom of the limiting base plate 503. When the air pump 401 is started, the control valve 510 is opened and the solenoid valve is closed, so that the gas enters the interior of the connecting pipe 509 through the connecting gas pipe 402, and then enters the interior of the fixed base 501 through the connecting pipe 509. At this time, the electric heating wire 508 is turned on so that the gas enters from the interior of the heating and heat preservation pipe 507 and is heated by the electric heating wire 508. The heated gas can then enter the interior of the protective sealing cover 2 through the hot gas inlet pipe 506. The protective sealing cover 2 can be equipped with hot air to simulate the adhesion test of the AF coating layer under high temperature conditions. By opening the solenoid valve, humid and hot gas can be simultaneously introduced into the protective sealing cover 2 to simulate the adhesion test of the AF coating layer under high temperature and humidity conditions. When replacing the heating insulation tube 507 and the internal electric heating wire 508, first push the heating insulation tube 507 downwards. After the top of the heating insulation tube 507 moves out of the fixed top seat 505, the user should then block the clamping seat 504 to prevent it from moving out of the fixed seat 501. At this point, the bottom of the heating insulation tube 507 can be removed from inside the clamping seat 504, thus completing the disassembly of the heating insulation tube 507.During installation, press the retaining seat 504 downwards and insert the bottom of the heating and insulation tube 507 into the retaining seat 504. Then release the heating and insulation tube 507. At this time, under the reaction force of the retaining spring 502, the retaining seat 504 can be pushed upwards, thereby allowing the heating and insulation tube 507 to move upwards and abut against the inside of the fixed top seat 505. Then, using the pushing force of the spring, the inside of the fixed top seat 505 and the inside of the retaining seat 504 are tightly pressed against the upper and lower ends of the heating and insulation tube 507, respectively. This completes the installation of the heating and insulation tube 507.
[0024] The pressure regulating mechanism 6 includes a mounting cylinder 601, which provides the installation position and ventilation conditions. One end of the mounting cylinder 601 is fixedly connected to the protective sealing cover 2 on one side of the thermal environment simulation test mechanism 5. A tension spring 602 is installed inside the mounting cylinder 601, and a blocking piston 603 is slidably connected inside the mounting cylinder 601. The tension spring 602 has a small elastic coefficient, so the air pressure inside the protective sealing cover 2 does not need to be large to easily push the blocking piston 603. A mounting ring 604 is fixedly connected to the outside of the mounting cylinder 601. The mounting ring 604 has multiple ventilation holes 605 inside. A rotating ring 606 is rotatably connected to the outside of the mounting ring 604, and the mounting ring 604 can install the rotating ring 606. The rotating ring 606 has a... Multiple alignment holes 607 are provided. After the vent hole 605 is aligned with the alignment holes 607, the gas inside the protective sealing cover 2 can be easily discharged. Multiple beveled teeth 608 are fixedly connected to the outside of the alignment holes 607. A connecting ring 609 is fixedly connected to the side of the rotating ring 606 away from the protective sealing cover 2. The connecting ring 609 provides an installation position. A torsion spring 610 is installed inside the connecting ring 609. The torsion spring 610 can use its own reaction force to reset the connecting ring 609. A fixing crank 611 is fixedly connected to the side of the mounting cylinder 601 away from the protective sealing cover 2. The fixing crank 611 provides installation conditions. A fixing sleeve 612 is fixedly connected to the end of the fixing crank 611 away from the mounting cylinder 601. The fixing sleeve 612 provides installation... Position: A rotating shaft 613 is rotatably connected inside the fixed sleeve 612. A second torsion spring 614 is installed inside the fixed sleeve 612. The second torsion spring 614 can use its own reaction force to reset the rotating shaft 613. A locking arm 615 is fixedly connected to the side of the rotating shaft 613 away from the fixed crank 611. After the locking arm 615 abuts against the vertical surface of the inclined locking tooth 608, it can prevent the rotating ring 606 from rotating and resetting. A pressing rotating handle 616 is fixedly connected to the outside of the locking arm 615. The pressing rotating handle 616 can easily drive the locking arm 615 to rotate, thereby contacting the locking arm 615 with the inclined locking tooth 608. A first torsion spring 610 is sleeved on the outside of the mounting sleeve 601. One end of the first torsion spring 610 is fixedly connected to the inside of the connecting ring 609. The other end of the spring 602 is fixedly connected to the outside of the mounting cylinder 601. One end of the tension spring 602 is fixedly connected to the inside of the mounting cylinder 601, and the other end of the tension spring 602 is fixedly connected to the side of the blocking piston 603 near the protective sealing cover 2. After hot gas or humid gas enters the interior of the protective sealing cover 2, if it is necessary to fill the interior of the protective sealing cover 2 with humid air, hot air, or humid hot air, the rotating ring 606 is rotated. After the rotating ring 606 rotates, it can drive the alignment hole 607 to rotate. When the alignment hole 607 is aligned with the vent hole 605, as the air pressure inside the protective sealing cover 2 increases, it can push the blocking piston 603 to move away from the scratch tester 1. After the blocking piston 603 moves past the mounting ring 604,The gas can then be discharged through the vent 605 and the alignment hole 607. Since there are multiple vent holes 605 and alignment holes 607, the more aligned vent holes 605 and alignment holes 607 are, the faster the gas discharge rate; the fewer aligned vent holes 605 and alignment holes 607 are, the slower the gas discharge rate. By adjusting the gas discharge rate, when the protective sealing cover 2 needs to quickly reach the target temperature or humidity, the exhaust rate can be increased. At this time, the introduced hot air can quickly replace the cold air in the environment, avoiding the stagnation of cold air that would cause slow temperature or humidity increases, and significantly shortening the preheating and humidification time. When the temperature or humidity reaches the target value, the exhaust rate can be reduced, and the residence time of hot or humid air in the environment is extended, allowing for sufficient heat exchange with the AF coating layer in the environment, avoiding local overheating or temperature fluctuations. When the temperature or humidity inside the protective sealing cover 2 stabilizes, the gas inside the protective sealing cover 2 is slowly discharged. As the internal and external air pressures inside the protective sealing cover 2 are relatively balanced, the blocking piston 603 will move towards the scratch tester 1 under the tension of the tension spring 602. When the blocking piston 603 moves to the side of the mounting ring 604 close to the scratch tester 1, the blocking piston 603 will prevent the gas inside the protective sealing cover 2 from being discharged, and at the same time, external gas will not enter the interior of the protective sealing cover 2. When the AF coating layer When testing under high pressure is required, press and rotate handle 616 to move the locking arm 615 downwards. At this time, the inclined locking tooth 608 is no longer restricted by the locking arm 615, allowing the connecting ring 609 to reset under the reaction force of the torsion spring 610, which in turn resets the rotating ring 606. At this point, the alignment hole 607 is misaligned with the vent hole 605. Regardless of the position of the blocking piston 603, gas entering the mounting cylinder 601 cannot escape, thus increasing the internal pressure of the protective sealing cover 2. This creates a high-pressure environment inside the protective sealing cover 2, simulating the testing of the AF coating layer under high pressure. After the high-pressure environment test, rotate the rotating ring 606 to align the alignment hole 607 with the vent hole 605 again, allowing the gas inside the protective sealing cover 2 to escape. When the internal pressure of the protective sealing cover 2 equalizes with the external pressure, pressure balance is achieved inside the protective sealing cover 2.
[0025] Working principle: When installing the protective sealing cover 2, first insert the protective sealing cover 2 into the slot 309. Due to the tension of the tension spring 302, part of the insert 304 has already retracted into the mounting housing 301. Then, install the bottom of the connecting pipe 308 into the automatic valve 305, open the automatic valve 305, and start the air supply and humidification test mechanism 4. The air pressure generated by the air supply and humidification test mechanism 4 can push the limit mounting plate 303 towards the protective sealing cover 2, thereby driving the insert 304 to move out of the mounting housing 301. Inside the mounting housing 301, insert the pin 304 into the fixing hole 307. At this time, the installation of the protective sealing cover 2 can be completed. When removing the protective sealing cover 2, open the exhaust valve 306 to discharge the gas inside the mounting housing 301. At this time, the limiting mounting plate 303 and the pin 304 move into the mounting housing 301 under the action of the tension spring 302, and the pin 304 moves out of the fixing hole 307. At this time, the protective sealing cover 2 can be pulled out from the slot 309, and the protective sealing cover 2 can be removed. When humid air is added to the space between the scratch tester 1 and the protective sealing cover 2, the air pump 401 is started and the solenoid valve is opened. At this time, the gas in the air pipe 402 can enter the interior of the water tank 403. The gas passing through the liquid inside the water tank 403 can enter the interior of the protective sealing cover 2 through the air pipe 405, thereby increasing the humidity inside the protective sealing cover 2 to simulate the adhesion test of the AF coating layer in a humid environment. Start the air pump 401, open the control valve 510, and close the solenoid valve, allowing gas to enter the connecting pipe 509 through the connecting pipe 402, and then enter the fixed base 501 through the connecting pipe 509. At this time, turn on the electric heating wire 508 to allow gas to enter from the heating insulation tube 507 and be heated by the electric heating wire 508. The heated gas can then enter the protective sealing cover 2 through the hot gas inlet pipe 506, thereby increasing the amount of hot air inside the protective sealing cover 2 to simulate the adhesion test of the AF coating layer in a high-temperature environment. Open the solenoid valve to allow humid gas and hot gas to enter the protective sealing cover 2 simultaneously to simulate the adhesion test of the AF coating layer in a high-temperature and humid environment. When replacing the heating insulation tube 507 and the internal electric heating wire 508, first push the heating insulation tube 507 downwards. After the top of 7 moves out of the fixed top seat 505, the user blocks the clamping seat 504 to prevent it from moving out of the fixed seat 501. At this time, the bottom of the heating and insulation tube 507 can be taken out from the clamping seat 504, thus completing the disassembly of the heating and insulation tube 507. During installation, press the clamping seat 504 downward and insert the bottom of the heating and insulation tube 507 into the clamping seat 504. Then release the heating and insulation tube 507. At this time, under the reaction force of the clamping spring 502, the clamping seat 504 can be pushed upward, so that the heating and insulation tube 507 can move upward and abut against the inside of the fixed top seat 505. At this time, the pushing force of the spring makes the inside of the fixed top seat 505 and the inside of the clamping seat 504 tightly abut against the upper and lower ends of the heating and insulation tube 507, thus completing the installation of the heating and insulation tube 507. After hot or humid gas enters the interior of the protective sealing cover 2, if it is necessary to fill the interior of the protective sealing cover 2 with humid air, hot air, or humid hot air, the rotating ring 606 is rotated. The rotation of the rotating ring 606 causes the alignment hole 607 to rotate. When the alignment hole 607 aligns with the vent hole 605, as the air pressure inside the protective sealing cover 2 increases, it pushes the blocking piston 603 to move away from the scratch tester 1. After the blocking piston 603 moves past the mounting ring 604, the gas can be discharged through the vent hole 605 and the alignment hole 607. Since there are multiple vent holes 605 and alignment holes 607, the more aligned vent holes 605 and alignment holes 607 are, the faster the gas discharge rate; the fewer aligned vent holes 605 and alignment holes 607 are, the slower the gas discharge rate. By adjusting the gas discharge rate, when the protective sealing cover 2 needs to quickly reach the target temperature or humidity, the exhaust rate can be increased. At this time, the introduced hot air can quickly replace the cold air in the environment, avoiding the stagnation of cold air that would cause slow temperature or humidity increases, and significantly shortening the preheating and humidification time. When the temperature or humidity reaches the target value, the exhaust rate can be reduced, and the residence time of hot or humid air in the environment is extended, allowing for sufficient heat exchange with the AF coating layer in the environment, avoiding local overheating or temperature fluctuations. When the temperature or humidity inside the protective sealing cover 2 stabilizes, the gas inside the protective sealing cover 2 is slowly discharged. As the internal and external air pressures inside the protective sealing cover 2 are relatively balanced, the blocking piston 603 will move towards the scratch tester 1 under the tension of the tension spring 602. When the blocking piston 603 moves to the side of the mounting ring 604 close to the scratch tester 1, the blocking piston 603 will prevent the gas inside the protective sealing cover 2 from being discharged, and at the same time, external gas will not enter the interior of the protective sealing cover 2. When the AF coating layer When testing under high pressure is required, press and rotate handle 616 to move the locking arm 615 downwards. At this time, the inclined locking tooth 608 is not restricted by the locking arm 615, so it can drive the connecting ring 609 to reset under the reaction force of the torsion spring 610, and then drive the rotating ring 606 to reset. At this time, the alignment hole 607 is misaligned with the vent hole 605. At this time, no matter what position the blocking piston 603 is in, the gas entering the mounting cylinder 601 cannot be discharged. Therefore, the air pressure inside the protective sealing cover 2 will increase, thereby creating a high-pressure environment inside the protective sealing cover 2, which can then simulate the AF coating layer being tested under high pressure. After the high-pressure environment test is completed, the rotating ring 606 can be rotated to align the alignment hole 607 with the vent hole 605 again, thereby allowing the gas inside the protective sealing cover 2 to be discharged. When the air pressure inside the protective sealing cover 2 is equal to the external air pressure, the air pressure inside the protective sealing cover 2 is balanced.
[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A progressive loading device based on AF coating adhesion testing, comprising a scratch tester (1), characterized in that, The top of the scratch tester (1) is provided with a protective sealing cover (2). The protective sealing cover (2) is used to protect the structure of the scratch tester (1) and keep the space formed by the scratch tester (1) and the protective sealing cover (2) sealed. The scratch tester (1) is provided with a mounting mechanism (3) on both sides. The mounting mechanism (3) is used to install the protective sealing cover (2). The outside of the protective sealing cover (2) is provided with a gas supply and humidification test mechanism (4). The gas supply and humidification test mechanism (4) is used to provide gas and create humid air. The outside of the protective sealing cover (2) is provided with a thermal environment simulation test mechanism (5). The thermal environment simulation test mechanism (5) is used to provide a simulated high temperature environment. The protective sealing cover (2) is provided with a pressure regulating mechanism (6) on one side of the thermal environment simulation test mechanism (5). The pressure regulating mechanism (6) is used to regulate the air pressure inside the protective sealing cover (2). A transparent observation window (7) is fixedly connected to one side of the protective sealing cover (2).
2. The progressive loading device based on AF coating adhesion testing according to claim 1, characterized in that, The mounting mechanism (3) includes a mounting housing (301), inside which are provided multiple tension springs (302), and inside which is a limiting mounting plate (303) slidably connected. On the side of the limiting mounting plate (303) away from the tension springs (302), multiple inserts (304) are fixedly connected. On the side of the mounting housing (301) away from the limiting mounting plate (303), an automatic valve (305) is fixedly connected. On the top of the mounting housing (301), an exhaust valve (306) is fixedly connected. Multiple fixing holes (307) are provided on both sides of the bottom of the protective sealing cover (2). On the side of the automatic valve (305) away from the mounting housing (301), a connecting pipe (308) is detachably connected. On the top of the scratch tester (1), a slot (309) is provided. The bottom of the protective sealing cover (2) is located inside the slot (309).
3. The progressive loading device based on AF coating adhesion testing according to claim 1, characterized in that, The air supply and humidification testing mechanism (4) includes an air pump (401), which is fixedly connected to the outside of the protective sealing cover (2). The output end of the air pump (401) is fixedly connected to a connecting air pipe (402). A water tank (403) is fixedly connected to the outside of the protective sealing cover (2) away from the air pump (401). A water injection pipe (404) is fixedly connected to the top of the water tank (403). A vent pipe (405) is fixedly connected to the top of the water tank (403). The top of the vent pipe (405) is fixedly connected to the top of the protective sealing cover (2).
4. The progressive loading device based on AF coating adhesion testing according to claim 3, characterized in that, The thermal environment simulation test mechanism (5) includes a fixed base (501), which is externally fixedly connected to the bottom of the protective sealing cover (2). A retaining spring (502) is fixedly connected to the bottom of the fixed base (501). A limiting base plate (503) is slidably connected inside the fixed base (501). A retaining seat (504) is fixedly connected to the top of the limiting base plate (503). A fixed top seat (505) is fixedly connected to the top of the protective sealing cover (2). A hot gas inlet pipe (506) is threadedly connected to the top of the fixed top seat (505). The end of the hot gas inlet pipe (506) away from the fixed top seat (505) is fixedly connected to the top of the protective sealing cover (2). A heating and heat preservation pipe (507) is provided between the fixed top seat (505) and the pressing seat (504). An electric heating wire (508) is provided inside the heating and heat preservation pipe (507). A connecting pipe (509) is fixedly connected to the bottom of the fixed seat (501). A control valve (510) is fixedly connected to the bottom of the connecting pipe (509). The end of the control valve (510) away from the connecting pipe (509) is fixedly connected to the middle of the connecting gas pipe (402).
5. The progressive loading device based on AF coating adhesion testing according to claim 1, characterized in that, The pressure regulating mechanism (6) includes a mounting cylinder (601). One end of the mounting cylinder (601) is fixedly connected to the protective sealing cover (2) on one side of the thermal environment simulation test mechanism (5). A tension spring (602) is provided inside the mounting cylinder (601). A blocking piston (603) is slidably connected inside the mounting cylinder (601). A mounting ring (604) is fixedly connected to the outside of the mounting cylinder (601). Multiple vent holes (605) are opened inside the mounting ring (604). A rotating ring (606) is rotatably connected to the outside of the mounting ring (604). Multiple alignment holes (607) are opened inside the rotating ring (606). The outside of the alignment holes (607) is... Multiple inclined teeth (608) are fixedly connected. A connecting ring (609) is fixedly connected to the side of the rotating ring (606) away from the protective sealing cover (2). A torsion spring (610) is provided inside the connecting ring (609). A fixed crank (611) is fixedly connected to the side of the mounting cylinder (601) away from the protective sealing cover (2). A fixed sleeve (612) is fixedly connected to the end of the fixed crank (611) away from the mounting cylinder (601). A rotating shaft (613) is rotatably connected inside the fixed sleeve (612). A torsion spring (614) is provided inside the fixed sleeve (612). A locking arm (615) is fixedly connected to the side of the rotating shaft (613) away from the fixed crank (611).
6. The progressive loading device based on AF coating adhesion testing according to claim 2, characterized in that, One side of the tension spring (302) is fixedly connected to one side of the mounting housing (301), and the other end of the tension spring (302) is fixedly connected to the side of the limiting mounting plate (303) away from the insert (304).
7. The progressive loading device based on AF coating adhesion testing according to claim 4, characterized in that, One end of the clamping spring (502) is fixedly connected to the bottom of the inner part of the fixed base (501), and the other end of the clamping spring (502) is fixedly connected to the bottom of the limiting base plate (503).
8. The progressive loading device based on AF coating adhesion testing according to claim 5, characterized in that, The external of the clamp arm (615) is fixedly connected to a pressing and rotating handle (616), and the torsion spring (610) is sleeved on the outside of the mounting cylinder (601).
9. The progressive loading device based on AF coating adhesion testing according to claim 5, characterized in that, One end of the torsion spring (610) is fixedly connected to the inside of the connecting ring (609), and the other end of the torsion spring (610) is fixedly connected to the outside of the mounting cylinder (601).
10. The progressive loading device based on AF coating adhesion testing according to claim 5, characterized in that, One end of the second tension spring (602) is fixedly connected to the inside of the mounting cylinder (601), and the other end of the second tension spring (602) is fixedly connected to the side of the blocking piston (603) near the protective sealing cover (2).