Coating bond force field test device and coating bond force test method

Abstract

The application provides a coating adhesion force on-site testing device and a coating adhesion force testing method, relates to the technical field of coating adhesion force testing, and is designed to solve the problem that the prior art cannot quickly test the coating on site. The coating adhesion force on-site testing device comprises a machine body and a test piece driving mechanism, the driving mechanism is installed on the machine body, the test piece driving mechanism comprises a test piece clamping seat, the test piece clamping seat is movably connected with the machine body, the test piece clamping seat comprises a lifting part, the lifting part is configured to apply a force along a first direction to a first test piece to drive the first test piece to move along the first direction, the first test piece is configured to be bonded with a second test piece, and the machine body is configured to allow the first test piece to be exposed and to hinder the second test piece from moving along the first direction. The coating adhesion force on-site testing device provided by the application can be tested only by carrying the device to the site, and the user can complete the test on the power station construction site.

Description

Technical Field

[0001] This invention relates to the field of coating adhesion testing technology, and more specifically, to a field testing device and a method for coating adhesion testing. Background Technology

[0002] To extend the service life of equipment, critical components of power plants are often protected with surface coatings. When surface protection is applied in the workshop, sample plates can be prepared simultaneously, and their adhesion can be measured concurrently in the workshop's testing center or laboratory, resulting in a fast testing response. However, when applying the coating at the power plant site, the conditions for laboratory testing and analysis are not available, making it difficult to quickly evaluate the coating's performance. Summary of the Invention

[0003] The first objective of this invention is to provide a field testing device for coating adhesion to solve the technical problem that existing technologies cannot quickly test coatings in the field.

[0004] The coating adhesion field testing device provided by the present invention includes a body and a specimen driving mechanism. The specimen driving mechanism is installed on the body and includes a specimen holder. The specimen holder is movably connected to the body. The specimen holder includes a lifting part, which is configured to apply a force along a first direction to a first specimen to drive the first specimen to move along the first direction. The first specimen is configured to adhere to a second specimen. The body is configured to allow the first specimen to be exposed and to prevent the second specimen from moving along the first direction.

[0005] The beneficial effects of the coating adhesion field testing device of this invention are:

[0006] By applying a force to the first specimen using a specimen holder, the first specimen moves along a first direction, protruding from the body and adhering to the second specimen. The body then applies a force to the second specimen that hinders its movement along the first direction, causing the second specimen to tend to separate from the first specimen. Separation occurs when the force between the first and second specimens exceeds the adhesive force generated by the coating. Using this device to test coating adhesion only requires bringing the device to the site, allowing users to easily complete the test at the power plant construction site, thus adapting to the power plant construction environment and expanding the scope of application of the test.

[0007] In a preferred embodiment, the specimen driving mechanism further includes a transmission column rotatably connected to the machine body, the end of the transmission column opposite to the first direction having a plug portion; the end of the specimen holder in the first direction having a power input portion, the power input portion being adapted to the plug portion and receiving the torque transmitted by the plug portion; the specimen holder being helically connected to the machine body.

[0008] By setting the specimen holder to be spirally connected to the machine body, and by using the plug part of the transmission column and the power input part of the specimen holder to adapt to transmit torque, the specimen holder is driven to move spirally relative to the machine body, thus converting the rotation of the specimen holder relative to the machine body into the movement of the specimen holder relative to the machine body in the first direction.

[0009] In a preferred embodiment, the plug portion is prismatic in shape, and the power input portion includes a prismatic groove.

[0010] The connector with a polygonal prism shape mates with a polygonal prism-shaped groove. The polygonal prism-shaped mating method has multiple surfaces in contact with each other, which increases the contact area and increases the upper limit of the torque that can be transmitted. It is suitable for situations where a tension is applied to the first specimen through the specimen holder to force the first specimen to separate from the second specimen, and this torque is converted into a larger force.

[0011] In a preferred embodiment, one end of the transmission column protrudes from the machine body along the first direction; the specimen driving mechanism further includes a turntable, which is fixedly connected to the end of the transmission column protruding from the machine body.

[0012] By protruding one end of the drive column in the first direction from the machine body and mounting a turntable, the operator can manually rotate the turntable to drive the drive column to rotate. Furthermore, manual drive reduces the weight of the motor, reducer, and other components, making the entire device easier to carry.

[0013] In a preferred embodiment, the specimen driving mechanism further includes a force-applying radial rod, and the turntable has multiple circumferentially distributed insertion holes. The force-applying radial rod is connected to the insertion holes to drive the turntable to rotate.

[0014] By inserting a radial rod into the insertion hole, the length of the lever arm between the point of application of force by the operator and the rotation axis of the transmission column and the turntable can be increased, which is beneficial to increasing the torque that drives the specimen holder to rotate.

[0015] In a preferred embodiment, the coating adhesion field testing device further includes a first pressure sensor, which is installed in the socket, and the sensing end of the first pressure sensor can be abutted by the force-applying radial rod.

[0016] The first pressure sensor can sense the force exerted by the radial rod on the insertion hole, and can calculate the torque and the magnitude of the force exerted when the second specimen separates from the first specimen based on this force.

[0017] In a preferred embodiment, the coating adhesion field testing device further includes a first thrust bearing, which is disposed between the turntable and the machine body.

[0018] Because a large force is required to detach the first specimen from the second specimen, a large force along the first direction needs to be applied to the first specimen. Correspondingly, the machine body needs to generate a large supporting force along the first direction on the turntable so that the specimen holder can obtain a large force along the first direction. Therefore, a large force may be generated between the turntable and the machine body when the turntable rotates.

[0019] By setting up a first thrust bearing, the force between the turntable and the machine body can be borne by the first thrust bearing, avoiding the large friction caused by the large axial force between the two. On the one hand, it reduces the severity of wear, and on the other hand, it reduces the frictional torque that needs to be overcome during rotation, thus making the operation more convenient.

[0020] In a preferred embodiment, the specimen holder has a stepped hole, the larger end of the stepped hole being away from the second specimen, and the longitudinal section of the first specimen is T-shaped.

[0021] By configuring the specimen holder with a stepped hole, the inner end face of the stepped hole can be used to apply a force along the first direction to the upper part of the first specimen, thereby causing the first specimen to move upward and separate from the second specimen.

[0022] In a preferred embodiment, the test head is further included to accommodate the second test piece; the first test piece is configured to protrude from the end face of the body facing away from the first direction; the test head is provided with a second test piece slot, which is configured to accommodate the insertion of the second test piece; the test head is also provided with a first test piece insertion hole, which is configured to accommodate the insertion of the first test piece and to bond the first test piece to the second test piece.

[0023] By setting the test head to accommodate an insertable second specimen, after the first specimen is separated from the second specimen, the adhesive residue with the first specimen is only present on the surface of the second specimen. The second specimen can be removed from the test head and a new second specimen can be inserted. The original second specimen can be discarded or cleaned separately, thus eliminating the need to clean the test head. The test head can be used to continue multiple subsequent tests, improving test efficiency.

[0024] In a preferred embodiment, a second thrust bearing is further included, which is disposed between the test head and the body.

[0025] And / or, the field testing device for coating adhesion further includes a second pressure sensor, which is disposed on the side of the test head facing the specimen holder and the sensing end of the second pressure sensor abuts against the specimen holder;

[0026] And / or, the coating adhesion field testing device further includes a distance sensor, which is installed on a side of the body opposite to the first direction, and the sensing end of the distance sensor is configured to face the end of the second specimen that protrudes from the slot of the second specimen.

[0027] Since the side of the machine body facing away from the first direction is responsible for blocking the movement of the second test piece along the first direction, when the first test piece moves upward, a large force is generated on the second test piece, causing it to tend to move along the first direction. Furthermore, before the first and second test pieces separate, the rotation of the first test piece with the test piece holder also causes the second test piece to rotate. This results in a rotational situation with a large axial force between the test head accommodating the second test piece and the side of the machine body facing away from the first direction, significantly increasing the wear rate. By placing the second thrust bearing between the test head and the machine body, the force is borne by the second thrust bearing between the two, avoiding the large frictional force generated by the large axial force. This reduces the severity of wear and also reduces the frictional torque that needs to be overcome during rotation, thus making operation more convenient.

[0028] By setting a second pressure sensor to abut against the specimen holder, the force between the test head and the specimen holder can be directly measured. When the force reaches a set threshold, the test head can be considered to be installed in place.

[0029] The distance sensor can be set up to measure the distance between the protruding part of the second test piece and the machine body. When the distance suddenly exceeds the preset value, it can be considered that the second test piece has separated from the first test piece, and the pressure value at this time can be fed back as the test value of the force required for separation.

[0030] The second objective of this invention is to provide a coating adhesion testing method to solve the technical problem that existing technologies cannot quickly conduct on-site testing of coatings.

[0031] The coating adhesion testing method provided by this invention uses the above-mentioned coating adhesion field testing device, and includes:

[0032] The lifting part applies a force along the first direction to the first specimen to drive the first specimen to move along the first direction;

[0033] The sensing end of the distance measuring sensor measures the actual distance between the end of the second specimen protruding from the slot of the second specimen and the actual distance. When the actual distance exceeds the preset distance value, the force measurement value at this time is recorded to provide feedback on the tensile force value on the first specimen.

[0034] By using the above-mentioned coating adhesion field testing device to measure the coating adhesion, the coating adhesion test method has all the advantages of the above-mentioned coating adhesion field testing device, which will not be elaborated here. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments or background art of the present invention, the drawings used in the description of the embodiments or background art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the coating adhesion field testing device provided in Embodiment 1 of the present invention;

[0037] Figure 2 This is a cross-sectional schematic diagram of the coating adhesion field testing device provided in Embodiment 1 of the present invention;

[0038] Figure 3 This is a schematic diagram of the circuit part of the coating adhesion field testing device provided in Embodiment 1 of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100-Body; 110-Top cover; 210-Specimen holder; 211-Lifting part; 212-Power input part; 220-Transmission column; 221-Plug part; 230-Turntable; 231-Socket; 240-Force application radial rod; 250-First thrust bearing; 300-Test head; 310-Second thrust bearing; 401-First pressure sensor; 402-Second pressure sensor; 403-Distance sensor; 404-Controller; 405-Touch display;

[0041] 998 - First specimen; 999 - Second specimen. Detailed Implementation

[0042] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0043] Example 1:

[0044] Figure 1 This is a schematic diagram of the coating adhesion field testing device provided in Embodiment 1 of the present invention; Figure 2 This is a cross-sectional schematic diagram of the coating adhesion field testing device provided in Embodiment 1 of the present invention. Figures 1-2As shown, the coating adhesion field testing device provided in Embodiment 1 of the present invention includes a body 100 and a specimen driving mechanism. The driving mechanism is installed on the body 100. The specimen driving mechanism includes a specimen holder 210, which is movably connected to the body 100. The specimen holder 210 includes a lifting part 211, which is configured to apply a force along a first direction to a first specimen 998 to drive the first specimen 998 to move along the first direction. The first specimen 998 is configured to adhere to a second specimen 999. The body 100 is configured to allow the first specimen 998 to be exposed and to prevent the second specimen 999 from moving along the first direction.

[0045] By applying a force to the first specimen 998 using the specimen holder 210, the first specimen 998 is moved along a first direction, exposing the body 100 and adhering to the second specimen 999. The body 100 applies a force to the second specimen 999 that hinders its movement along the first direction, causing the second specimen 999 to tend to separate from the first specimen 998. Separation occurs only when the force between the first and second specimens 998 exceeds the adhesive force generated by the coating. Using this device to test coating adhesion only requires bringing the device to the site, allowing users to easily complete the test at the power plant construction site, thus adapting to the power plant construction environment and expanding the scope of application of the test.

[0046] It should be noted that the first direction refers to, Figure 1 and Figure 2 In actual use, the first direction is not necessarily upward; that is, the device is not necessarily limited to being used with the second test piece 999 located below the body 100. For example, the first direction can also be horizontal or inclined in a vertical plane.

[0047] In addition, a carrying handle is provided on the side wall of the machine body 100, which allows the operator to insert their fingers between the carrying handle and the machine body 100 to carry the coating adhesion field testing device for movement.

[0048] like Figures 1-2 As shown, preferably, the specimen driving mechanism further includes a transmission column 220 rotatably connected to the body 100, and the end of the transmission column 220 facing away from the first direction has a plug portion 221; the end of the specimen holder 210 in the first direction has a power input portion 212, the power input portion 212 is adapted to the plug portion 221 and receives the torque transmitted by the plug portion 221; the specimen holder 210 is spirally connected to the body 100.

[0049] The power input section 212 can be located at one end of the specimen holder 210 in the first direction, while the plug section 221 is located at the end of the transmission column 220 opposite to the first direction. Figure 1 and Figure 2 The lower end is shown. The rotation axis of the transmission column 220 coincides with the rotation axis of the specimen holder 210.

[0050] By setting the specimen holder 210 to be spirally connected to the machine body 100, and by using the plug part 221 of the transmission column 220 and the power input part 212 of the specimen holder 210 to transmit torque, the specimen holder 210 is driven to perform spiral motion relative to the machine body 100, and the rotation of the specimen holder 210 relative to the machine body 100 is converted into the movement of the specimen holder 210 relative to the machine body 100 in the first direction, that is, upward movement.

[0051] like Figure 2 As shown, preferably, the plug portion 221 has a polygonal prism shape, and the power input portion 212 includes a polygonal prism-shaped groove.

[0052] The connector with a polygonal prism shape mates with a polygonal prism-shaped groove. The polygonal prism-shaped mating method has multiple surfaces in contact with each other, which increases the contact area and increases the upper limit of the torque that can be transmitted. It is suitable for situations where the torque is converted into a larger force when the first test piece 998 is forced to separate from the second test piece 999 by applying a pulling force through the test piece holder 210.

[0053] In another implementation, the connector portion can be a slotted prism or a cross-shaped prism, while the power input portion 212 can be a slotted groove or a cross-shaped groove that mates with the slotted or cross-shaped shape, similar to the common fit between a screwdriver and a screw. Alternatively, the plug portion 221 can have a semi-circular cross-section, and the power input portion 212 can also have a semi-circular cross-section. The two semi-circles do not necessarily have to be the same size, as long as the contact surfaces of the two semi-circles pass through the rotation axis of the transmission column 220. Alternatively, the plug portion 221 can be a groove, such as a polygonal prism-shaped groove, while the power input portion 212 has a polygonal prism shape, which can also serve to transmit torque.

[0054] like Figures 1-2 As shown, preferably, one end of the transmission column 220 protrudes from the body 100 along the first direction; the specimen driving mechanism also includes a turntable 230, which is fixedly connected to the end of the transmission column 220 that protrudes from the body 100.

[0055] The machine body 100 includes an upper cover 110, which is connected to the lower half of the machine body 100 by bolts or screws. When the first test piece 998 needs to be placed, the upper cover 110 is separated from the lower half of the machine body 100, the transmission column 220 is removed, and the first test piece 998 is connected to the test piece holder 210.

[0056] By protruding one end of the drive column 220 in the first direction from the machine body 100 and mounting the turntable 230, the operator can manually rotate the turntable 230 to drive the drive column 220 to rotate. Moreover, manual driving can reduce the weight of the motor, reducer, etc., thus making the entire device easier to carry.

[0057] Of course, in another implementation, the turntable 230 may not be connected to the transmission column 220. Instead, an electric method may be used, such as a combination of a motor and a reducer, with the output of the reducer connected to the transmission column 220 to drive its rotation. While this combination of motor and reducer may result in a heavier load than the manual method described in the previous embodiment, making it less portable, it allows for more effort during testing. Those skilled in the art can choose the method of driving the transmission column 220 according to their specific needs.

[0058] like Figure 1 As shown, preferably, the specimen driving mechanism further includes a force-applying radial rod 240, and the turntable 230 has a plurality of circumferentially distributed insertion holes 231. The force-applying radial rod 240 is connected to the insertion holes 231 to drive the turntable 230 to rotate.

[0059] Specifically, for example, the turntable 230 may have 8, 10, or 12 piers 231 evenly distributed circumferentially, and is equipped with two or three force-applying radial rods 240. After the operator rotates the force-applying radial rods 240 by a certain angle, the force-applying radial rods 240 can be inserted into the piers 231 in the new position to continue applying torque.

[0060] By inserting the radial rod 240 into the insertion hole 231, the length of the lever arm between the point of application of the force applied by the operator and the rotation axis of the transmission column 220 and the turntable 230 can be increased, which is beneficial to increasing the torque that drives the specimen holder 210 to rotate.

[0061] In another implementation, the turntable 230 may not be connected to the force-applying radial rod 240. For example, the turntable 230 itself may be a handwheel that requires two hands to hold, and may also generate a large torque on the transmission column 220.

[0062] Preferably, the on-site coating adhesion testing device further includes a first pressure sensor 401. Figure 1 and Figure 2 (Not shown in the image), the first pressure sensor 401 is installed in the socket 231, and the sensing end of the first pressure sensor 401 can be abutted by the force-applying radial rod 240.

[0063] Specifically, the first pressure sensor 401 is installed in the socket 231 on the side pressed by the force-applying radial rod 240.

[0064] The first pressure sensor 401 can sense the force exerted by the radial rod 240 on the insertion hole 231, and can calculate the torque and the magnitude of the force when the second specimen 999 separates from the first specimen 998 based on this force.

[0065] like Figure 2 As shown, preferably, the field testing device for coating adhesion also includes a first thrust bearing 250, which is disposed between the turntable 230 and the body 100.

[0066] Since a large force is required to detach the first specimen 998 from the second specimen 999, a large force along the first direction needs to be applied to the first specimen 998. Correspondingly, the body 100 needs to generate a large supporting force along the first direction on the turntable 230 in order to provide a large force along the first direction to the specimen holder 210. Therefore, a large force may be generated between the turntable 230 and the body 100 when the turntable 230 rotates.

[0067] By setting up a first thrust bearing 250, the first thrust bearing 250 can bear the force between the turntable 230 and the machine body 100, avoiding the generation of large friction due to large axial force between the two. On the one hand, it reduces the severity of wear, and on the other hand, it also reduces the friction torque that needs to be overcome during rotation, thus making the operation more convenient.

[0068] like Figure 2 As shown, preferably, the specimen holder 210 has a stepped hole, the larger end of the stepped hole is away from the second specimen 999, and the longitudinal section of the first specimen 998 is T-shaped.

[0069] In this embodiment, the larger diameter end refers to the part of the stepped hole with a larger diameter, located at the top of the stepped hole, while the smaller diameter end refers to the part of the stepped hole with a smaller diameter, located at the bottom of the stepped hole.

[0070] The specimen holder 210 is configured with a stepped hole, and the inner end face of the stepped hole can be used to apply a force along the first direction to the upper part of the first specimen 998, thereby causing the first specimen 998 to move upward and separate from the second specimen 999.

[0071] In another implementation, the time holder can be configured with a conical hole, wider at the top and narrower at the bottom. The first specimen 998 is then a matching conical shape. Alternatively, when the plug portion 221 has a countersunk hole, the top surface of the specimen holder 210 can be used as the inner end face of the aforementioned stepped hole to support the upper and lower surfaces of the first specimen 998, which has a T-shaped longitudinal section, thus accommodating the upper part of the first specimen 998 within the countersunk hole.

[0072] like Figure 2As shown, preferably, it also includes a test head 300 for accommodating a second test specimen 999; the first test specimen 998 is configured to protrude from the end face of the body 100 facing away from the first direction; the test head 300 is provided with a second test specimen slot (because it is blocked by the second test specimen 999, therefore...). Figure 2 (Not marked in the text), the second specimen slot is configured to accommodate the insertion of the second specimen 999; the test head 300 also has a first specimen insertion hole (which is blocked by the first specimen 998, so...). Figure 2 (Not marked in the text) The first specimen insertion hole is configured to accommodate the insertion of the first specimen and to bond the first specimen 998 to the second specimen 999.

[0073] The test head 300 is a flattened cylinder, and the second specimen slot extends from at least one side of the circumferential surface of the test head 300 into the interior of the test head 300. More preferably, it can extend from both sides of the circumferential surface of the test head 300, that is, both ends of the second specimen slot in the longitudinal direction have openings on opposite sides of the circumferential surface of the test head 300. The first specimen insertion hole extends from the top of the test head 300 and communicates with the second specimen slot.

[0074] By setting the test head 300 to accommodate an insertable second specimen 999, after the first specimen 998 is separated from the second specimen 999, the adhesive residue of the first specimen 998 is only present on the surface of the second specimen 999. The second specimen 999 can be removed from the test head 300 and a new second specimen 999 can be inserted. The original second specimen 999 can be discarded or cleaned separately, thus eliminating the need to clean the test head 300. The test head 300 can be used to continue subsequent tests, improving test efficiency.

[0075] like Figure 2 As shown, preferably, it also includes a second thrust bearing 310, which is disposed between the test head 300 and the body 100;

[0076] The field testing device for coating adhesion also includes a second pressure sensor 402. Figure 1 and Figure 2 (Not shown in the image), the second pressure sensor 402 is disposed on the side of the test head 300 facing the specimen holder 210 and the sensing end of the second pressure sensor 402 abuts against the specimen holder 210.

[0077] The coating adhesion field testing device also includes a distance sensor 403, which is installed on the side of the body 100 away from the first direction, and the sensing end of the distance sensor 403 is configured to protrude from the second specimen slot towards the second specimen 999.

[0078] Since the side of the body 100 facing away from the first direction is responsible for blocking the movement of the second test piece 999 along the first direction, when the first test piece 998 moves upward, a large force is generated on the second test piece 999, causing it to tend to move along the first direction. Moreover, before the first test piece 998 separates from the second test piece 999, the rotation of the first test piece 998 with the test piece holder 210 will also cause the second test piece 999 to rotate. This will result in a rotation with a large axial force between the test head 300, which houses the second test piece 999, and the side of the body 100 facing away from the first direction, significantly increasing the wear rate. By placing the second thrust bearing 310 between the test head 300 and the body 100, the second thrust bearing 310 bears the force between the test head 300 and the body 100, avoiding the large friction caused by the large axial force. This reduces the severity of wear and also reduces the frictional torque that needs to be overcome during rotation, thus making operation more convenient.

[0079] The second pressure sensor 402 is set to abut against the specimen holder 210, which can directly measure the force between the test head 300 and the specimen holder 210. When the force reaches the set threshold, the test head 300 can be considered to be installed in place.

[0080] Among them, the ranging sensor 403 can be a laser ranging probe, which is embedded in the bottom of the body 100 and located above the part of the second test piece 999 that protrudes from the test head 300.

[0081] The distance sensor 403 can measure the distance between the protruding part of the second test piece 999 and the body 100. When the distance is greater than the preset value, it can be considered that the second test piece 999 is separated from the first test piece 998, and the pressure value at this time is fed back as the test value of the force required to measure the separation.

[0082] Figure 3 This is a schematic diagram of the circuit portion of the coating adhesion field testing device provided in Embodiment 1 of the present invention. Figure 3 As shown, the coating adhesion field testing device also includes a human-machine interface unit, which includes a controller 404 and a touch screen 405 electrically connected to it. The touch screen 405 is embedded in the side wall of the body 100. The controller 404 is electrically connected to the first pressure sensor 401, the second pressure sensor 402, and the distance sensor 403 mentioned above. The electrical connection can be wireless or not.

[0083] In addition, the field coating adhesion testing device can be powered by a battery pack or lithium battery pack, or it can be powered by a power cord connected to the field power supply.

[0084] Example 2:

[0085] The coating adhesion testing method provided in this embodiment uses the above-mentioned coating adhesion field testing device, including:

[0086] The lifting part 211 applies a force along the first direction to the first specimen 998 to drive the first specimen 998 to move along the first direction;

[0087] The sensing end of the distance sensor 403 measures the actual distance between the end of the second specimen 999 protruding from the second specimen slot and the specimen. When the actual distance exceeds the preset distance value, the force measurement value at this time is recorded to provide feedback on the tension value on the first specimen 998.

[0088] In this embodiment, the result measured by the first pressure sensor 401 can be directly used as the calibration value for coating failure. That is, if the result measured by the first pressure sensor 401 at a certain moment is 200N, which can generate a tensile force of 1000N on the first specimen 998, then the result of the first pressure sensor 401 can be converted to 1000N. In the next measurement, if the result measured by the first pressure sensor 401 is 180N, it can be converted to generate a tensile force of 900N on the first specimen. In another implementation, a measuring device such as a strain gauge can be set on the first specimen 998 to directly measure the tensile deformation of the first specimen 998 to obtain the tensile force it can withstand.

[0089] Specifically, the coating adhesion test method provided in Example 2 is as follows:

[0090] Before use, loosen the threaded connectors connecting the top cover 110 and the body 100 to separate the lower part of the top cover 110 and the body 100, and then remove the transmission column 220 from the body 100. Place the first test piece 998 into the stepped hole of the test piece holder 210, so that the bottom end of the first test piece 998 protrudes from the test piece holder 210. At this time, the test piece holder 210 is in a lower position relative to the body 100. Since the bottom end of the test piece holder 210 also protrudes from the body 100, in this embodiment, the first test piece 998 protrudes from the test piece holder 210. However, in practice, as long as the bottom end face of the first test piece 998 is flush with the bottom end face of the body 100, so that the bottom end face of the first test piece 998 is exposed and can contact the second test piece 999, the test can be performed. However, by extending the bottom of the first test piece 998 downwards out of the test piece holder 210 and the body 100, it is beneficial to ensure that when the coating to be tested is applied to the lower end surface of the first test piece 998, it will not be applied to other parts, thus preventing other parts from being contaminated.

[0091] Then, the second test piece 999 is inserted into the second test piece slot in the test head 300, so that approximately the middle of the second test piece 999 is in contact with the bottom end of the first test piece 998, using the adhesiveness of the coating to bond the two together. Furthermore, the upper cover 110 is placed back onto the lower part of the body 100 and secured to the lower part of the body 100 with threaded fasteners. At this point, the second pressure sensor 402 can be used to detect whether it abuts against the test piece holder 210 to determine whether the test head 300 is properly installed relative to the test piece holder 210.

[0092] A radial force-applying rod 240 is inserted into the insertion hole 231. By pushing or pulling the radial force-applying rod, the turntable 230 is rotated, which in turn drives the transmission column 220, which is fixedly connected to the turntable 230, to rotate. Since the transmission column 220 is connected to the power input part 212 with a polygonal groove through the plug part 221 with a polygonal shape, the transmission column 220 drives the specimen holder 210 to rotate. The specimen holder 210 is screwed to the lower part of the machine body 100, and this screw connection converts the rotation of the specimen holder 210 into a lifting or lowering motion relative to the machine body 100. The lower end face of the stepped hole in the specimen holder 210 is used to lift the lower end face of the upper part of the T-shaped first specimen 998 upward, thereby moving the first specimen 998 upward.

[0093] When the test head 300 is obstructed by the body 100, the threaded connection between the body 100 and the specimen holder 210 generates a large force, pushing the specimen holder 210 upward. At this time, a large pressure is also generated between the inner end face of the stepped hole and the first specimen 998. This pressure can generate friction, which in turn forms a frictional torque, allowing the first specimen 998 to move together with the specimen holder 210. Therefore, the test head 300 can rotate relative to the lower surface of the body 100, and the second thrust bearing 310 can significantly reduce the friction between them. During this process, the first pressure sensor 401 continuously detects the pressure applied by the force-applying radial rod 240 to the insertion hole 231 and converts it into torque. At the same time, the distance sensor 403 continuously detects the distance between the part of the second specimen 999 protruding from the test head 300 and the body 100. The distance sensor 403 collects the actual distance 'a' between the second specimen 999 and the body 100 every Ams.

[0094] As the turntable 230 continues to rotate, the force exerted by the first specimen 998 on the second specimen 999 increases further until the bonding force of the coatings between them is overcome. The second specimen 999 then separates from the first specimen 998. At this point, the actual distance 'a' collected by the distance sensor will be greater than the preset distance value 'b'. For example, before the separation of the first specimen 998 and the second specimen 999, the distance between the second specimen 999 and the lower surface of the first body 100 is 5mm, and the preset distance 'b' can be set to 6mm. However, after separation, the second specimen 999 falls due to the detachment of the first specimen 998 and the second specimen 999. Therefore, the actual distance 'a' is much greater than 6mm. Thus, when the actual distance 'a' collected by the distance sensor is greater than the preset distance 'b', and this state is maintained for more than ns (i.e., meeting the condition of continuous change), it can be considered that the separation of the first specimen 998 and the second specimen 999 has occurred. The value measured by the first pressure sensor 401 when the distance changes is recorded as sample data. Alternatively, the actual distance 'a' fed back by the distance sensor 403 may be much greater than the preset distance 'b'. For example, after the second specimen 999 falls, the distance sensor 403 may not be able to detect the existence of 'a', or it may be a value on the order of several hundred millimeters. In this case, it can also be considered that the first specimen 998 and the second specimen 999 have separated, and the last value recorded by the first pressure sensor 401 before separation is taken as the sample data.

[0095] This device can automatically record the pressure exerted when the sample is pulled apart during each test, using this data to complete the coating adhesion test. Since multiple samples may be tested within a single test cycle, the controller 404 is configured as follows: the controller 404 receives a preset sampling start signal and a preset sampling end signal as one test cycle, and calculates the average of the sample data within that test cycle. Both the sampling start signal and the sampling end signal can originate from signals used to operate the touchscreen display 405.

[0096] Then, before the next test, the top cover 110 can be opened, the original first test piece 998 can be taken out of the test piece holder 210, and a new first test piece 998 can be installed. The turntable is rotated in the opposite direction to the above process. At the same time, the original second test piece 999 is taken out of the test head 300, and a new second test piece 999 is installed for testing.

[0097] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0098] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0099] In the above embodiments, descriptions of directions such as "up" and "down" are based on the accompanying drawings.

[0100] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

[0101] Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A field testing device for coating adhesion, characterized in that, The device includes a body (100) and a specimen driving mechanism. The specimen driving mechanism is mounted on the body (100) and includes a specimen holder (210). The specimen holder (210) is movably connected to the body (100). The specimen holder (210) includes a lifting part (211). The lifting part (211) is configured to apply a force along a first direction to a first specimen (998) to drive the first specimen (998) to move along the first direction. The first specimen (998) is configured to adhere to a second specimen (999). The body (100) is configured to allow the first specimen (998) to be exposed and to prevent the second specimen (999) from moving along the first direction. The specimen driving mechanism further includes a transmission column (220) rotatably connected to the body (100), and the end of the transmission column (220) facing away from the first direction has a plug portion (221); the end of the specimen holder (210) in the first direction has a power input portion (212), the power input portion (212) is adapted to the plug portion (221) and receives the torque transmitted by the plug portion (221); the end of the transmission column (220) along the first direction protrudes from the body (100). The specimen holder (210) has a stepped hole, which forms the lifting part (211); the larger end of the stepped hole is away from the second specimen (999), the longitudinal section of the first specimen (998) is T-shaped, and the specimen holder (210) is spirally connected to the body (100). The body (100) includes a top cover (110), which is connected to the lower half of the body (100) by bolts or screws. The top cover (110) is configured to separate from the lower half of the body (100) when the first test piece (998) needs to be placed, so that the transmission column (220) can be removed and the first test piece (998) can be connected to the test piece holder (210).

2. The field testing device for coating adhesion according to claim 1, characterized in that, The plug part (221) has a polygonal prism shape, and the power input part (212) includes a polygonal prism-shaped groove.

3. The field testing device for coating adhesion according to claim 1, characterized in that, The specimen driving mechanism also includes a turntable (230), which is fixedly connected to one end of the transmission column (220) that protrudes from the body (100).

4. The field testing device for coating adhesion according to claim 3, characterized in that, The specimen driving mechanism also includes a force-applying radial rod (240), and the turntable (230) has a plurality of circumferentially distributed insertion holes (231). The force-applying radial rod (240) is connected to the insertion holes (231) to drive the turntable (230) to rotate.

5. The field testing device for coating adhesion according to claim 4, characterized in that, The coating adhesion field testing device also includes a first pressure sensor (401), which is installed in the socket (231) and the sensing end of the first pressure sensor (401) can be abutted by the force-applying radial rod (240).

6. The field testing device for coating adhesion according to claim 3, characterized in that, The coating adhesion field testing device also includes a first thrust bearing (250), which is disposed between the turntable (230) and the body (100).

7. The field testing device for coating adhesion according to any one of claims 1-6, characterized in that, It also includes a test head (300) for receiving the second test piece (999); the first test piece (998) is configured to protrude from the end face of the body (100) away from the first direction; the test head (300) is provided with a second test piece slot, the second test piece slot is configured to receive the insertion of the second test piece (999); the test head (300) is also provided with a first test piece insertion hole (231), the first test piece insertion hole (231) is configured to receive the insertion of the first test piece (998) and cause the first test piece (998) to adhere to the second test piece (999).

8. The field testing device for coating adhesion according to claim 7, characterized in that, It also includes a second thrust bearing (310), which is disposed between the test head (300) and the body (100); And / or, The coating adhesion field testing device also includes a second pressure sensor (402), which is disposed on one side of the test head (300) facing the specimen holder (210) and the sensing end of the second pressure sensor (402) abuts against the specimen holder (210). And / or, The coating adhesion field testing device also includes a distance sensor (403), which is installed on a side of the body (100) away from the first direction, and the sensing end of the distance sensor (403) is configured to protrude from the second specimen slot towards the second specimen (999).

9. A method for testing coating adhesion, characterized in that, The field coating adhesion testing apparatus of claim 8 includes: The lifting part (211) applies a force along a first direction to the first specimen (998) to drive the first specimen (998) to move along the first direction; The sensing end of the distance sensor (403) measures the actual distance between the end of the second test piece (999) protruding from the slot of the second test piece and the test piece. When the actual distance exceeds the preset distance value, the force measurement value at this time is recorded to provide feedback on the tension value on the first test piece (998).

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