Anti-corrosion coating detection device and method

Abstract

The present invention provides an anti-corrosion coating detection device and method, which belongs to the field of coating detection technology, and is used to solve the problem in the prior art that it is difficult to detect the integrity of the anti-corrosion coating on the surface of the substrate, especially on steel structures. It includes a machine body, a measuring rod and a pulling and pressing mechanism; at least two reaction rods are arranged on one side of the machine body, and during detection, the reaction rods fix the machine body to the object to be detected, and the pulling and pressing mechanism is arranged on the other side of the machine body; the measuring rod passes through and is slidably connected to the machine body, and the measuring rod is located on one side of the reaction rod as a measuring part, and the measuring rod is located on one side of the pulling and pressing mechanism as an operating part, and the operating part includes a plate-like structure fixed to the measuring rod; the pulling and pressing mechanism is arranged between the machine body and the plate-like structure, and controls the sliding direction and distance of the measuring rod relative to the machine body. The device combined with the method can simplify the anti-corrosion coating integrity detection process, especially for on-site testing.

Description

Technical Field

[0001] The invention belongs to the technical field of coating detection, and in particular relates to a device and method for detecting anti-corrosion coatings of steel structures. Background Art

[0002] The surface of the substrate, especially steel structures, is usually sprayed with anti-corrosion coatings for isolation and protection. Taking offshore light buoys as an example, epoxy primers and intermediate paints, polyurethane topcoats, etc. are often sprayed. These coatings have excellent anti-corrosion properties. Among them, epoxy paints have strong adhesion and are resistant to water, heat, wear and impact; polyurethane topcoats have good weather resistance and can further improve the anti-corrosion effect. In order to ensure that the coating can effectively protect the light buoy steel, it is necessary to test the adhesion of the coating on the steel surface.

[0003] Light buoys are buoys equipped with navigation lights. They are important navigational aids at sea and are used to mark waterways, reefs, and warning signs to ensure navigation safety. They are usually anchored at designated locations and are kept stable by floats and anchor chains. In complex marine environments, light buoys face the dual corrosion effects of seawater and marine atmosphere. The steel surface is prone to seawater, electrochemical corrosion, and marine biofouling, which affect the visibility and navigational efficiency of light buoys. Therefore, anti-corrosion protection of light buoys is an important means to improve their maintenance effect and navigational efficiency.

[0004] In the prior art, adhesion testing is generally performed in laboratories, but in some cases, such as the aforementioned light buoy, which has a diameter of up to 3 meters and is deployed in a marine environment, the existing laboratory testing methods are difficult to use. Therefore, a more flexible testing method is needed to conduct on-site testing and more conveniently evaluate the integrity of the coating. Summary of the invention

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an anti-corrosion coating detection device and method to solve the problem that it is difficult to detect the integrity of the anti-corrosion coating on the surface of the substrate, especially on offshore floating steel structures in certain scenarios in the prior art.

[0006] To achieve the above-mentioned purpose and other related purposes, the present invention provides an anti-corrosion coating detection device and method.

[0007] Among them, the anti-corrosion coating detection device includes a body, a measuring rod and a pulling and pressing mechanism;

[0008] At least two reaction rods are arranged on one side of the machine body, and during detection, the reaction rods fix the machine body to the object to be detected, and the pulling and pressing mechanism is arranged on the other side of the machine body;

[0009] The measuring rod penetrates and is slidably connected to the machine body, the measuring rod is located on one side of the reaction rod as a measuring part, and the measuring rod is located on one side of the drawing and pressing mechanism as an operating part, and the operating part includes a plate-shaped structure fixedly connected to the measuring rod;

[0010] The pulling and pressing mechanism is arranged between the machine body and the plate-like structure, and controls the sliding direction and distance of the measuring rod relative to the machine body.

[0011] Optionally, a tension detection unit is provided between the machine body and the plate-like structure.

[0012] Optionally, the extraction and pressing mechanism comprises a power shaft, an extraction wheel and a pressing claw;

[0013] The power shaft is rotatably disposed on the machine body and is parallel to the plate-like structure;

[0014] The pulling wheel and the pressing claw are both fixedly connected to the power shaft;

[0015] The pulling wheel is lower than the plate-like structure, and the pulling wheel is arranged along the first rotation direction of the circumference of the power shaft, and the distance from the outer edge of the pulling wheel to the axis of the power shaft gradually increases;

[0016] Initially, the pressing claw exceeds the plate-like structure;

[0017] When the power shaft rotates in the opposite direction of the first rotation direction, the pressing claw presses the plate-like structure, and the pulling wheel moves away from the plate-like structure;

[0018] When the power shaft rotates along the first rotation direction, the pressing claw moves away from the plate-like structure, and the pulling wheel lifts up the plate-like structure.

[0019] Optionally, the pulling and pressing mechanisms are in two groups and are symmetrically arranged about the measuring rod, respectively pressing or lifting two sides of the plate-like structure, and the power shafts of the two groups of pulling and pressing mechanisms are transmission connected and rotate in opposite directions.

[0020] Optionally, the tension detection unit includes a detection body and a telescopic shaft;

[0021] The telescopic shaft is threadedly matched with the body, the upper end of the telescopic shaft is beyond the body and is rotatably connected with a buckle, the telescopic shaft is located in the body and is connected to the rotating power source, and the telescopic amount of the telescopic shaft is controlled by the rotation amount of the rotating power source;

[0022] Both sides of the detection body are hook structures, one side of which is mounted on the plate-like structure, and the other side is mounted on the ring buckle.

[0023] Optionally, the measuring part is detachably mounted on the end of the measuring rod, and the measuring part comprises an abutting side and a connecting side, the abutting side contacts the measured coating, and the connecting side is connected to the measuring rod;

[0024] The abutting side is provided with a concave circular cavity, and a heating structure and a cooling structure are arranged in the measuring part body. The cooling structure is a semiconductor cooling sheet, the cooling part of the semiconductor cooling sheet is connected to the measuring part body, and the heat dissipation part is a layered metal sheet.

[0025] Optionally, the reaction rods are divided into four groups, which are respectively arranged around the measuring rod. The reaction rods include a rod body and a magnetic sheet. One end of the rod body is fixedly connected to the machine body. An electromagnet and an ordinary magnet are arranged in the magnetic sheet. The magnetic sheet is detachably arranged at the end of the rod body.

[0026] Optionally, a first handle is provided at the end of the operating portion on the measuring rod, and in an initial state, the measuring rod can be taken out from the machine body.

[0027] Optionally, second handles are provided on both sides of the body.

[0028] The anti-corrosion coating detection method, using the anti-corrosion coating detection device as described above, comprises the following steps:

[0029] Preparation steps: the reaction rod fixes the body to the object to be measured, solid hot melt adhesive is placed in the concave circular cavity on the abutting side, the pulling and pressing mechanism controls the measuring rod to press the object to be measured, the heating structure is turned on and heats the solid hot melt adhesive, the solid hot melt adhesive melts, the cooling structure is switched on, the solid hot melt adhesive connects the abutting side and the object to be measured as a whole, and the cooling structure is closed;

[0030] Test steps: the pulling and pressing mechanism controls the measuring rod to pull the measuring part from the object to be measured, and records the magnitude of the pulling force;

[0031] Evaluation steps: qualitative and / or quantitative evaluation of the anti-corrosion coating;

[0032] The qualitative assessment is as follows: if the tensile force reaches the set value and the anti-corrosion coating on the surface of the object being tested is not pulled apart, it is considered qualified;

[0033] The quantitative evaluation is as follows: the tensile force when the anti-corrosion coating on the surface of the object being tested is pulled apart is the performance index of the anti-corrosion coating.

[0034] As described above, the anti-corrosion coating detection device and method of the present invention have at least the following beneficial effects:

[0035] It can simplify the process of anti-corrosion coating integrity detection, especially for field testing. In simple terms, the device is fixedly connected to the target through the body, and the measuring rod connected to the body is slidably connected to the coating of the measured area, and then the tensile force is formed by pulling the measuring rod to detect the coating's ability to withstand the tensile force, thereby evaluating the integrity of the anti-corrosion coating and the protective ability of the anti-corrosion coating on steel such as light buoys. The device combined with the method can be tested on site, which is more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Shown is a three-dimensional schematic diagram of the present invention.

[0037] Figure 2 It is a three-dimensional schematic diagram of the present invention from another direction.

[0038] Figure 3 It is a three-dimensional schematic diagram of the present invention after the measuring rod is hidden.

[0039] Figure 4 Shown is a schematic diagram of the measuring rod of the present invention.

[0040] Figure 5 It is a schematic diagram showing the pressing state of the drawing and pressing mechanism of the present invention.

[0041] Figure 6 It is a schematic diagram showing the drawing state of the drawing and pressing mechanism of the present invention.

[0042] Figure 7 The diagram shows the application of the present invention to a navigation mark.

[0043] Figure 8 Shown as the present invention Figure 7 A partial enlarged schematic diagram in the middle.

[0044] Fig. 9 Shown is a schematic diagram of the drawing and pressing mechanism of the present invention.

[0045] Fig.10 Shown is a schematic diagram of the installation of the telescopic shaft of the present invention.

[0046] Among them: body 1, reaction rod 10, magnetic sheet 101, second handle 11, measuring rod 2, abutment side 20, circular cavity 201, heat dissipation part 2011, connection side 21, plate structure 22, first handle 23, pulling and pressing mechanism 3, power shaft 30, pulling wheel 31, outer edge 311, clamping claw 32, tension detection unit 4, detection body 40, hook structure 401, telescopic shaft 41, buckle 411, inspection hole 8, surface of the object to be measured 9. DETAILED DESCRIPTION

[0047] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0048] See also Figures 1 to 8 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0049] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0050] For this example, please refer to Figure 1-Figure 6 , an embodiment of the anti-corrosion coating detection device provided by the present invention. It includes a body 1, a measuring rod 2 and a pulling and pressing mechanism 3;

[0051] At least two reaction rods 10 are arranged on one side of the machine body 1. During detection, the reaction rods 10 fix the machine body 1 to the object to be detected, and the pulling and pressing mechanism 3 is arranged on the other side of the machine body 1;

[0052] The measuring rod 2 penetrates and is slidably connected to the machine body 1. The measuring rod 2 is located on one side of the reaction rod 10 as a measuring part, and the measuring rod 2 is located on one side of the drawing and pressing mechanism 3 as an operating part. The operating part includes a plate-like structure 22 fixedly connected to the measuring rod 2.

[0053] The pulling and pressing mechanism 3 is arranged between the machine body 1 and the plate-like structure 22 , and controls the sliding direction and distance of the measuring rod 2 relative to the machine body 1 .

[0054] The basic working principle of the device in the above implementation is: first, clean the target surface to be measured, and then connect the body 1 of the detection device and the object to be measured as a whole through the reaction rod 10. Then, apply the adhesive material on the measuring part of the measuring rod 2, pass the measuring part of the measuring rod 2 through the body 1 and contact with the surface of the object to be measured and squeeze it appropriately. The measuring rod 2 can be moved toward the surface of the object to be measured through the pulling and pressing mechanism 3 to form extrusion, so that the adhesive material connects the measuring part and the surface of the object to be measured as a whole. After the bonding is stable, the pulling and pressing mechanism 3 acts in the opposite direction, allowing the measuring rod 2 to move away from the surface of the object in the opposite direction to form pulling. In this process, the pulling force is adjusted by controlling the power of the pulling and pressing mechanism 3 to evaluate the integrity of the coating on the surface of the object to be measured. Further, the stronger the pulling force that the coating can resist, the better its performance. In the specific implementation, the appropriate pulling force can be set according to the application scenario of the object to be measured. The pulling force parameters can be obtained through experience or through industry standards in related fields. For example, a scenario requires that the coating can withstand a tensile stress of X megapascals (this unit is commonly used in material mechanics to indicate the reaction force of an object per unit area to an external force that causes the object to stretch. Megapascal is a unit of pressure and stress in the International System of Units, which indicates that the pressure per square meter is one million newtons.) without being damaged. The tensile force can be set to the corresponding parameter. If the coating is not damaged (that is, it is not pulled off) under this tensile force, it means that the coating is in good condition and the performance meets the requirements. In general, the test can be carried out on site, and the test operation process is simple.

[0055] In the above embodiments, the following matters should be noted when selecting the bonding material or adhesive: Pay attention to the selection of a suitable adhesive. In order to test the tensile properties of the coating, the cohesion and adhesion of the adhesive should be greater than the cohesion and adhesion of the test coating. The adhesive should be screened in advance to determine whether it is suitable. The suitable adhesive and its unmixed components (if applicable) produce little or no perceptible changes to the test coating during the period of contact with the coating equivalent to the adhesive curing time. Select the adhesive that can give the maximum result (usually manifested as adhesion damage between the coating and the substrate). In most cases, cyanoacrylate, two-component solvent-free epoxide and peroxide-catalyzed polyester adhesives are suitable. Under test conditions with high humidity, the curing time of the adhesive should be as short as possible, and it is best to use a two-component quick-drying epoxy adhesive. During implementation, when the adhesive itself is destroyed before the coating, it means that the cohesion and adhesion of the adhesive may be smaller than the cohesion and adhesion of the tested coating and the surface of the object, and the use of other types of adhesives may obtain more effective results.

[0056] In this embodiment, a tension detection unit 4 is provided between the body 1 and the plate-like structure 22. When performing adhesion detection of the anti-corrosion coating, the control and monitoring of the tension magnitude is extremely important. The control of the tension magnitude is achieved by controlling the sliding direction and distance of the measuring rod 2 relative to the body 1 through the pulling and pressing mechanism 3 provided between the body 1 and the plate-like structure 22 in the previous embodiment. This method is not accurate in controlling the tension magnitude. In this embodiment, the tension detection unit 4 can detect the real tension value in real time, and the tension magnitude control is combined with the tension value and the pulling and pressing mechanism 3 controlling the sliding distance of the measuring rod 2 to achieve the tension magnitude control, so that the control link of the tension magnitude is closed-loop, thereby improving the accuracy of tension control and monitoring, and thus the coating detection result is more accurate.

[0057] The detection part of the tension detection unit 4 can use a spring-type tension gauge or an electronic tension gauge. The electronic tension gauge has better effect, the reading is more intuitive and the data can be transmitted to the control system for automatic recording, or the force applied by the pulling and pressing mechanism 3 to the measuring rod 2 can be automatically adjusted according to the tension value.

[0058] Furthermore, the extraction and pressing mechanism 3 includes a power shaft 30, an extraction wheel 31 and a pressing claw 32;

[0059] The power shaft 30 is rotatably disposed on the machine body 1 and is parallel to the plate-like structure 22;

[0060] The extraction wheel 31 and the pressing claw 32 are both fixedly connected to the power shaft 30;

[0061] The pull-out wheel 31 is lower than the plate-like structure 22 , and the distance from the outer edge 311 of the pull-out wheel 31 to the axis of the power shaft 30 gradually increases along the first rotation direction of the circumference of the power shaft 30 ;

[0062] Initially, the pressing claw 32 exceeds the plate-like structure 22. At this time, the pressing claw 32 and the pulling wheel 31 have no force on the plate-like structure 22. At this time, the entire measuring rod 2 can be taken out of the body 1, and the bonding part on the measuring rod 2 can be cleaned and glued very conveniently.

[0063] When the power shaft 30 rotates in the opposite direction of the first rotation direction, the pressing claw 32 presses the plate-like structure 22, and the pulling wheel 31 moves away from the plate-like structure 22, thereby pressing the bonding part of the end of the measuring rod 2 to the measured surface, and the adhesive firmly connects the two.

[0064] After the adhesive is stably bonded, when the power shaft 30 rotates along the first rotation direction, the pressing claw 32 moves away from the plate-like structure 22, and the pulling wheel 31 lifts up the plate-like structure 22, thereby starting the pull-out test.

[0065] The device in the above embodiment simplifies the manual operation during the test and enriches the test scenarios. When the device tests the inclined surface and the outer surface of the bottom structure, the measuring rod 2 will not fall out, which can ensure the connection stability during the adhesive curing process and eliminate the need for manual lifting or supporting devices.

[0066] This embodiment can be found in Figure 1-Figure 3 There are two groups of pulling and pressing mechanisms 3, which are symmetrically arranged about the measuring rod 2, respectively pressing or lifting the two sides of the plate-like structure 22, and the power shafts 30 of the two groups of pulling and pressing mechanisms 3 are connected in transmission and rotate in opposite directions. The two pulling and pressing mechanisms 3 are symmetrically arranged on both sides of the measuring rod 2, which can ensure that the force on the measuring rod 2 is balanced and stable during the test, so that when the coating pull-out test is performed, the force distribution at the measured interface is balanced, so as to more accurately evaluate the coating performance.

[0067] This embodiment can be found in Figure 3 , the tension detection unit 4 includes a detection body 40 and a telescopic shaft 41;

[0068] The telescopic shaft 41 is threadedly matched with the body 1, and the upper end of the telescopic shaft 41 extends beyond the body 1 and is rotatably connected with a buckle 411. The telescopic shaft 41 is located in the body 1 and is connected to the rotating power source 5. The rotating power source 5 is slidably connected to the body 1 and the sliding direction is consistent with the telescopic direction of the telescopic shaft 41. Figure 3 and Fig.10 The extension and retraction of the telescopic shaft 41 is controlled by the rotation of the rotation power source, and the function of the buckle 411 is to prevent the tension detection unit from being twisted during the extension or retraction of the telescopic shaft 41; both sides of the detection body 40 are hook structures 401, one side of which is mounted on the plate structure 22, and the other side is mounted on the buckle 411.

[0069] In the above embodiment, the detection body 40 can adopt a tensile gauge in the prior art. A tensile gauge is an instrument used to measure the force on an object, and is widely used in industrial production, scientific research experiments, quality inspection and other fields. In order to facilitate reading, an electronic tensile gauge can be used, which can display the force of the pulling and pressing mechanism 3 on the measuring rod 2 in real time, which is also the tension between the measuring rod 2 and the object to be measured. The tensile value of the tensile gauge is divided by the area of ​​the adhesion area between the measuring rod 2 and the object to be measured, and the force (or stress) of the coating per unit area on the object to be measured can be obtained.

[0070] In the above embodiment, the telescopic shaft 41 can actively adjust the distance between the two ends of the tension detection unit 4, and then adjust the initial reading of the tension detection unit 4, so as to facilitate the calibration or zeroing of the reading of the tension detection unit 4 before the pull-out test. Another function is that when the telescopic shaft 41 is extended, the hook at the upper end of the tension detection unit 4 can be easily removed from the plate-like structure 22 of the measuring rod, so as to facilitate the removal of the measuring rod 2 from the machine body 1, and to perform operations such as cleaning the residual glue and applying new glue to the measuring rod 2.

[0071] In the above embodiment, during the rotation of the motor shaft, the telescopic shaft 41 is threadedly matched with the body 1, so that the telescopic shaft 41 will move along its own axis, and the telescopic shaft 41 will move synchronously with the motor, that is, the rotating power source 5. The motor and the body 1 must be slidably connected to ensure the normal operation of the above working process. It is precisely because the telescopic shaft 41 is threadedly matched with the body 1 that during the pulling process, the tension on the telescopic shaft 41 will only be transmitted to the body but not to the motor. Under the premise of realizing the extension or retraction of the telescopic shaft 41 to adjust the reading of the tension detection unit 4 and facilitate the installation and separation of the tension detection unit 4 and the measuring rod, the stability and reliability of the device itself, especially the motor, are ensured.

[0072] This embodiment can be found in Figure 4 The measuring part is detachably mounted on the end of the measuring rod 2, and the measuring part includes an abutting side 20 and a connecting side 21, the abutting side 20 contacts the measured coating, and the connecting side 21 is connected to the measuring rod 2;

[0073] The abutting side 20 has a concave circular cavity 201. The measuring part body can be made of metal material with good thermal conductivity. A heating structure and a cooling structure are arranged inside. The heating structure can be a PTC heating wire, etc., which is in contact with the measuring part body and transfers heat to the colloid in the circular cavity 201; the cooling structure is a semiconductor cooling sheet, and the cooling part of the semiconductor cooling sheet is connected and contacted with the measuring part body. The heat dissipation part 2011 is a layered metal sheet, which is arranged on the side of the measuring part body away from the circular cavity 201. The semiconductor cooling sheet, also called the thermoelectric cooling sheet, is a heat pump. Using the Peltier effect of semiconductor materials, when direct current passes through a couple formed by two different semiconductor materials in series, heat can be absorbed and released at both ends of the couple respectively, so as to achieve the purpose of cooling. It is a refrigeration technology that produces negative thermal resistance, which is characterized by no moving parts and high reliability.

[0074] In the above embodiment, the measuring part is detachably mounted for the purpose of easy replacement because the contact side 20 of the measuring part needs to have a matching shape for better fit to different measured surfaces, such as the measured body is a cylindrical surface, a plane, a spherical surface, etc.

[0075] The circular cavity 201 of the abutting side 20 is used to accommodate hot-melt adhesives. The solid adhesive is inserted into the circular cavity 201, and then it is abutted against the surface to be tested. The heating structure is used to heat the solid adhesive until it melts, and then the refrigeration structure is turned on at the right time to cool down at a suitable rate. This can speed up the bonding process of the adhesive, shorten the waiting period, and improve the test efficiency. The purpose of the circular cavity for accommodating the hot-melt adhesive is to ensure uniform stress distribution on the force interface during the test, because compared to rectangular and other cross-sections, the cross-section of the circular cavity has no sharp corners and is not easy to form local stress. The purpose of using hot-melt adhesives is to simplify the operation process. Compared with fluid adhesives, hot-melt adhesives are much more convenient during application and cleaning.

[0076] After the measurement is completed, the adhesive joint can be automatically peeled off by heating, so that the residual glue on the test part can be removed from the body for cleaning without using strong force to pull it apart, causing secondary damage to the coating on the test part.

[0077] This embodiment can be found in Figure 3 The reaction rods 10 are divided into four groups, which are respectively arranged around the measuring rod 2. The reaction rods 10 include a rod body and a magnetic sheet 101. One end of the rod body is fixedly connected to the body 1. The magnetic sheet 101 is provided with an electromagnet and an ordinary magnet. The magnetic sheet 101 is detachably arranged at the end of the rod body.

[0078] Ordinary magnets can provide a small magnetic force, which is enough to adsorb the body 1 to the surface of the steel structure to be measured, and it is also convenient when the body needs to be removed. The magnetic force of the electromagnet can be controlled by the power supply, and can provide a large suction force. During the test, it must be able to withstand the reaction force acting on the body 1 when the pulling and pressing mechanism 3 controls the sliding of the measuring rod 2, ensuring that the body 1 can always be stably fixed on the surface of the steel structure to be measured.

[0079] The magnetic sheet 101 is detachably arranged at the end of the rod body for easy replacement. Like the previous embodiment, the magnetic sheet 101 needs to have a matching shape to better fit the body 1, such as a cylindrical body, a flat body, a spherical body surface, etc.

[0080] This embodiment can be found in Figure 4 A first handle 23 is provided at the end of the operating portion of the measuring rod 2. In the initial state, the measuring rod 2 can be taken out of the body 1, so as to facilitate the application of adhesive to the end of the measuring rod 2 or the insertion of hot-melt solid adhesive.

[0081] This embodiment can be found in Figure 3 , second handles 11 are provided on both sides of the body 1 to facilitate moving, carrying and operating the device. Figure 7Another advantage of the device is that the device can be placed inside the housing of the light beacon through the inspection hole 8 and other structures on the light beacon, and the body 1 can be adsorbed and fixed to the inner surface to detect the coating on the inner surface. In specific operation, the second handle 11 can be clamped by the mechanical arm, extended into the inner side of the steel structure, and the body 1 can be adsorbed on it for testing.

[0082] This embodiment is an embodiment of an anti-corrosion coating detection method, using the above anti-corrosion coating detection device, including the following steps:

[0083] Preparation steps: the reaction rod 10 fixes the body 1 to the object to be measured, which can be achieved by magnetic attraction. The measuring rod 2 is removed from the body 1, and the solid hot melt adhesive is put into the concave circular cavity 201 on the abutting side 20. Then the measuring rod 2 is put back into the body 1. The pulling and pressing mechanism 3 controls the measuring rod 2 to press the object to be measured. The heating structure is turned on and heats the solid hot melt adhesive. The solid hot melt adhesive melts. After waiting for a certain period of time, the cooling structure is switched on. The solid hot melt adhesive connects the abutting side 20 and the object to be measured as a whole, and the cooling structure is closed;

[0084] Test steps: The pulling and pressing mechanism 3 controls the measuring rod 2 to pull the measuring part from the object to be measured, and records the pulling force. When the pulling force reaches the set value, the pulling is stopped, or when the surface coating of the object to be measured is pulled off, the pulling is stopped;

[0085] Evaluation steps: qualitative and / or quantitative evaluation of the anti-corrosion coating;

[0086] The qualitative assessment is as follows: if the tensile force reaches the set value and the anti-corrosion coating on the surface 9 of the object under test is not pulled apart, it is considered qualified and no further tensile force test is performed;

[0087] The quantitative evaluation is as follows: the tensile force when the anti-corrosion coating on the surface 9 of the object under test is pulled apart is a performance index of the anti-corrosion coating, which is recorded as the maximum tensile strength of the coating or called adhesion.

[0088] Subsequent steps: After the test is completed, the heating structure is turned on and heated, so that the adhesive is ineffective, which facilitates the separation of the test device and the object to be tested. Then the surface of the object to be tested is inspected and the residual glue is cleaned, and the surface of the measuring rod 2 is also cleaned.

[0089] In summary, the present invention effectively overcomes various shortcomings in the prior art, can produce beneficial technical effects, and has significant progress.

[0090] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. Anti-corrosion coating detection device, It is characterized in that It comprises a machine body (1), a measuring rod (2) and a drawing and pressing mechanism (3); At least two reaction rods (10) are arranged on one side of the machine body (1), and during detection, the reaction rods (10) fix the machine body (1) to the object to be detected, and the pulling and pressing mechanism (3) is arranged on the other side of the machine body (1); The measuring rod (2) penetrates through and is slidably connected to the machine body (1); the measuring rod (2) is located on one side of the reaction rod (10) as a measuring portion; the measuring rod (2) is located on one side of the drawing and pressing mechanism (3) as an operating portion; the operating portion includes a plate-shaped structure (22) fixedly connected to the measuring rod (2); The pulling and pressing mechanism (3) is arranged between the machine body (1) and the plate-like structure (22), and controls the sliding direction and distance of the measuring rod (2) relative to the machine body (1); The extraction and pressing mechanism (3) comprises a power shaft (30), an extraction wheel (31) and a pressing claw (32); The power shaft (30) is rotatably disposed on the machine body (1) and is parallel to the plate-like structure (22); The pulling wheel (31) and the pressing claw (32) are both fixedly connected to the power shaft (30); The pulling wheel (31) is lower than the plate-like structure (22); along the first rotation direction of the circumference of the power shaft (30), the distance from the outer edge (311) of the pulling wheel (31) to the axis of the power shaft (30) gradually increases; Initially, the pressing claw (32) exceeds the plate-like structure (22); When the power shaft (30) rotates in the opposite direction to the first rotation direction, the pressing claw (32) presses the plate-like structure (22), and the pulling wheel (31) moves away from the plate-like structure (22); When the power shaft (30) rotates along the first rotation direction, the pressing claw (32) moves away from the plate-like structure (22), and the pulling wheel (31) lifts up the plate-like structure (22); The pulling and pressing mechanisms (3) are in two groups and are symmetrically arranged with respect to the measuring rod (2), respectively pressing or lifting the two sides of the plate-like structure (22); the power shafts (30) of the two groups of the pulling and pressing mechanisms (3) are connected in transmission and rotate in opposite directions.

2. The anti-corrosion coating detection device according to claim 1, It is characterized in that A tension detection unit (4) is provided between the machine body (1) and the plate-like structure (22).

3. The anti-corrosion coating detection device according to claim 2, It is characterized in that The tension detection unit (4) comprises a detection body (40) and a telescopic shaft (41); The telescopic shaft (41) is threadedly engaged with the machine body (1); the upper end of the telescopic shaft (41) protrudes beyond the machine body (1) and is rotatably connected to a buckle (411); the telescopic shaft (41) is located on the machine body (1) and is connected to a rotation power source; the telescopic amount of the telescopic shaft (41) is controlled by the rotation amount of the rotation power source; Both sides of the detection body (40) are hook structures (401), one side of which is mounted on the plate-like structure (22), and the other side of which is mounted on the ring buckle (411).

4. The anti-corrosion coating detection device according to claim 1, It is characterized in that The measuring part is detachably mounted on the end of the measuring rod (2), and the measuring part comprises an abutting side (20) and a connecting side (21), the abutting side (20) is in contact with the coating to be measured, and the connecting side (21) is connected to the measuring rod (2); The abutting side (20) has an inwardly concave circular cavity (201), and a heating structure and a cooling structure are arranged in the measuring part body. The cooling structure is a semiconductor cooling sheet, and the cooling part of the semiconductor cooling sheet is connected to the measuring part body. The heat dissipation part (2011) is a layered metal sheet.

5. The anti-corrosion coating detection device according to claim 1, It is characterized in that The reaction rods (10) are divided into four groups and are respectively arranged around the measuring rod (2). The reaction rods (10) comprise a rod body and a magnetic attraction sheet (101). One end of the rod body is fixedly connected to the machine body (1). An electromagnet and a common magnet are arranged inside the magnetic attraction sheet (101). The magnetic attraction sheet (101) is detachably arranged at the end of the rod body.

6. The anti-corrosion coating detection device according to claim 1, It is characterized in that A first handle (23) is provided at the end of the operating portion on the measuring rod (2); in an initial state, the measuring rod (2) can be removed from the machine body (1).

7. The anti-corrosion coating detection device according to claim 1, It is characterized in that Second handles (11) are provided on both sides of the machine body (1).

8. Anti-corrosion coating detection method, It is characterized in that The anti-corrosion coating detection device according to claim 4 comprises the following steps: Preparation steps: the reaction rod (10) fixes the body (1) to the object to be measured, a solid hot melt adhesive is placed in the concave circular cavity (201) on the abutting side (20), the pulling and pressing mechanism (3) controls the measuring rod (2) to press the object to be measured, the heating structure is turned on and heats the solid hot melt adhesive, the solid hot melt adhesive melts, the cooling structure is switched on, the solid hot melt adhesive connects the abutting side (20) and the object to be measured as a whole, and the cooling structure is turned off; Testing steps: the pulling and pressing mechanism (3) controls the measuring rod (2) to pull the measuring part from the object to be measured, and records the magnitude of the pulling force; Evaluation steps: qualitative and / or quantitative evaluation of the anti-corrosion coating; The qualitative assessment is as follows: if the pulling force reaches the set value and the anti-corrosion coating on the surface of the object being tested (9) is not pulled apart, it is considered qualified; The quantitative evaluation is as follows: the tensile force when the anti-corrosion coating on the surface of the object under test (9) is pulled apart is the performance index of the anti-corrosion coating.

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