CN106918554B - Pipeline coating peel strength test device - Google Patents
Pipeline coating peel strength test device Download PDFInfo
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- CN106918554B CN106918554B CN201511001137.XA CN201511001137A CN106918554B CN 106918554 B CN106918554 B CN 106918554B CN 201511001137 A CN201511001137 A CN 201511001137A CN 106918554 B CN106918554 B CN 106918554B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
Abstract
The invention discloses a pipeline coating peeling strength test device, which comprises: the device comprises a shell, a roller, a clamping unit, a tension detection unit, a temperature detection unit, a lifting system and a control system. In the test operation, the lifting system is automatically controlled by the control system to pull the tension detection unit to move upwards, the clamping unit pulls the test sample strip of the pipeline coating to gradually peel off the pipeline, and under the action of the reaction force of the test sample strip, the pipeline coating is automatically pushed forwards along the outer wall of the pipeline by the roller; the peeling strength and the testing temperature can be respectively detected in real time through the tension detection unit and the temperature detection unit; the automatic test device is simple to operate, can automatically monitor the test state in real time, has high test precision, greatly reduces the labor intensity of workers, saves time and labor, greatly improves the working efficiency, has high test operation safety, and avoids the injury to workers.
Description
Technical Field
The invention relates to the field of petroleum pipelines, in particular to a pipeline coating peeling strength testing device.
Background
The pipeline requires good adhesion between the anti-corrosion coating and the pipe body in the operation process, otherwise once the coating loses the adhesion, moisture can be gathered between the pipe body and the coating, so that the coating loses the anti-corrosion function, the pipe body is corroded, and the operation safety of the pipeline is threatened.
At present, a plurality of polyolefin anticorrosive coatings such as three-layer polyethylene (3PE), three-layer polypropylene (3PP), a polyethylene heat-shrinkable tape (HSS), a polyethylene/polypropylene cold-wound tape, a viscoelastic body adhesive tape and the like are commonly adopted at home and abroad for pipeline corrosion prevention. For polyolefin anticorrosive coatings, the peel strength is an important parameter for evaluating the adhesion performance of the coating; therefore, polyolefin-based pipe coatings are generally evaluated for effectiveness of corrosion resistant coatings using a degree of peel strength under certain temperature, fixed peel speed, and angle conditions. When the on-site test is carried out on a pipeline construction site or an anti-corrosion coating operation line, the test must be directly carried out on a finished pipe, and the pipeline cannot be cut. At present, when a field peeling strength test is carried out, a spring scale or a dynamometer is generally adopted to carry out measurement in a manual mode.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
the manual test is time-consuming and labor-consuming, the safety is poor, personnel injury is easily caused, and the accuracy of the test result is poor.
Disclosure of Invention
In order to solve the problems that manual testing in the prior art is time-consuming and labor-consuming, poor in safety and poor in accuracy of testing results, the embodiment of the invention provides a pipeline coating peeling strength testing device. The technical scheme is as follows:
a pipeline coating peel strength test device, pipeline coating peel strength test device includes: casing, gyro wheel, centre gripping unit, pulling force detecting element, temperature detecting element, operating system and control system, pulling force detecting element with centre gripping unit fixed connection, the centre gripping unit is used for the test spline of the fixed pipeline coating of centre gripping, operating system is used for the pulling force detecting element up-and-down motion, control system is connected with pulling force detecting element, temperature detecting element, operating system respectively, temperature detecting element is used for detecting the temperature of the position that awaits measuring, the casing cover dress is in the outside of centre gripping unit, pulling force detecting element, temperature detecting element, operating system and control system, the gyro wheel sets up the casing below, just the gyro wheel with the pipeline outer wall pastes mutually.
Specifically, the tension detection unit is a tension sensor, and the temperature detection unit is an infrared temperature detector.
Preferably, the lifting system comprises a motor, a worm gear, a belt wheel and a synchronous belt, the belt wheel is fixed inside the shell, the belt wheel is meshed with the synchronous belt, the motor is sequentially connected with the worm gear and the belt wheel, and the motor drives the belt wheel to rotate through the worm gear, so that the synchronous belt is pulled in the vertical direction to move up and down the tension detection unit.
Further, pipeline coating peel strength test device still includes support frame, leading wheel, smuggle crossbeam, position sensor secretly of vertical setting, the support frame sets up inside the casing, smuggle the crossbeam setting secretly and be in pulling force detecting element with between the hold-in range, just smuggle the crossbeam secretly respectively with pulling force detecting element the hold-in range is connected, the leading wheel sets up smuggle the crossbeam secretly with between the support frame, just smuggle the crossbeam secretly with the leading wheel is connected, smuggle the crossbeam secretly and can drive the leading wheel together along the support frame up-and-down motion, position sensor with control system connects, just position sensor is used for detecting smuggle the height of crossbeam secretly.
Furthermore, the pipeline coating peel strength test device further comprises a fixing knob, wherein the fixing knob is arranged on the clamping and carrying beam, and the clamping and carrying beam is connected with the synchronous belt through the fixing knob during work.
Specifically, the control system comprises an electronic control circuit board, a CPU and a memory are arranged on the electronic control circuit board, the CPU is connected with the motor through a motor controller, and the CPU is further connected with a tension detection unit, a temperature detection unit and a position sensor respectively.
Preferably, the pipeline coating peeling strength testing device further comprises an output system, and the output system is connected with the CPU.
Further, the output system comprises a communication interface and a printer, and both the communication interface and the printer are connected with the CPU.
Still further, the output system further comprises a display, and the display is connected with the CPU.
Preferably, the pipeline coating peeling strength testing device comprises a laser indicator, the laser indicator is connected with the CPU, and the laser indicator is used for indicating the position to be measured.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
in the test operation, the lifting system is automatically controlled by the control system to pull the tension detection unit to move upwards, the clamping unit pulls the test sample strip of the pipeline coating to gradually peel off the pipeline, and under the action of the reaction force of the test sample strip, the pipeline coating is automatically pushed forwards along the outer wall of the pipeline by the roller; the peeling strength and the testing temperature can be respectively detected in real time through the tension detection unit and the temperature detection unit; the automatic test device is simple to operate, can automatically monitor the test state in real time, has high test precision, greatly reduces the labor intensity of workers, saves time and labor, greatly improves the working efficiency, has high test operation safety, and avoids the injury to workers.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a pipeline coating peel strength testing apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a pipeline coating peel strength testing apparatus according to another embodiment of the present invention;
FIG. 3 is a rear view of FIG. 2;
fig. 4 is a top view of fig. 2.
Wherein: 1 pipeline, 11 test bars,
2 shell, 21 rollers, 22 support frames,
3 a clamping unit for clamping the workpiece to be processed,
4 a tension detecting unit for detecting the tension of the workpiece,
5 clamping beam, 51 guide wheel, 52 fixing knob,
6 lifting system, 61 motor, 62 worm gear, 63 belt wheel, 64 synchronous belt,
7 a temperature detection unit for detecting the temperature of the sample,
8 output system, 81 communication interface, 82 printer,
9 control system, 91 control buttons.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and also referring to fig. 4, an embodiment of the present invention provides an apparatus for testing a peel strength of a coating of a pipe 1, including: casing 2, gyro wheel 21, clamping unit 3, pulling force detecting unit 4, temperature detecting unit 7, operating system 6 and control system 9, pulling force detecting unit 4 with clamping unit 3 fixed connection, clamping unit 3 is used for the test spline 11 of the fixed pipeline 1 coating of centre gripping, operating system 6 is used for the pulling force detecting unit 4 up-and-down motion, control system 9 is connected with pulling force detecting unit 4, temperature detecting unit 7, operating system 6 respectively, temperature detecting unit 7 is used for detecting the temperature of the position of awaiting measuring, casing 2 covers the outside of dress at clamping unit 3, pulling force detecting unit 4, temperature detecting unit 7, operating system 6 and control system 9, gyro wheel 21 sets up casing 2 below, just gyro wheel 21 with the pipeline 1 outer wall pastes mutually.
The position of the temperature detection unit 7 is not limited, the implementation modes of the temperature detection unit are various, the temperature of the position to be detected can be detected by adopting infrared remote detection, the sensor can also be used for carrying out on-site contact heat conduction detection on the position to be detected, the position to be detected can be a critical point of the peeling of the test sample strip 11 and the pipeline 1, and other positions can also be flexibly arranged according to actual needs; the lifting system 6 and the tension detection unit 4 can be fixedly connected or detachably arranged, only when the test operation is started, the lifting system 6 and the tension detection unit 4 are connected, and the lifting system 6 can pull the tension detection unit 4 to move up and down;
according to the invention, the lifting system 6 is automatically controlled by the control system 9 to pull the tension detection unit 4 to move upwards, the clamping unit 3 is further used for pulling the test sample strip 11 coated on the pipeline 1 to gradually strip the pipeline 1, and the stripping strength and the test temperature can be respectively detected in real time by the tension detection unit 4 and the temperature detection unit 7; the automatic control of the stripping speed of the test sample strip 11 by the lifting system 6 is realized through the arrangement of the control system 9, and under the action of the reaction force of the test sample strip 11, the automatic control device synchronously and automatically pushes forwards along the outer wall of the pipeline 1 through the roller 21, so that the stripped test sample strip 11 is kept perpendicular to the tangent line of the pipeline 1 as much as possible, and the accuracy of the final test data is improved; the peeling strength and the testing temperature are respectively detected in real time through the tension detection unit 4 and the temperature detection unit 7; the invention has simple operation, can automatically monitor on line in real time, timely master the state of the peeling strength during testing, has higher testing precision, greatly reduces the labor intensity of workers, saves time and labor, greatly improves the working efficiency, has higher safety of testing operation and avoids the injury to the workers.
As shown in fig. 1, specifically, the tension detection unit 4 is a tension sensor, and the temperature detection unit 7 is an infrared temperature detector.
The tension sensor is rigidly connected with the clamping unit 3, the stripping force required by stripping the test sample strip 11 is rigidly transmitted to the tension sensor through the clamping unit 3, the current stripping force is tested, and the current stripping force is recorded and stored through the control system 9; the real-time temperature of the stripping part is detected by an infrared temperature detector and is also recorded and stored by a control system 9; the automatic real-time monitoring of the peeling force and the test temperature is realized, and the state of the peeling strength during testing is mastered in time.
As shown in fig. 1, preferably, the lifting system 6 includes a motor 61, a worm gear 62, a pulley 63 and a synchronous belt 64, the pulley 63 is fixed inside the housing 2, the pulley 63 is engaged with the synchronous belt 64, the motor 61 is sequentially connected with the worm gear 62 and the pulley 63, and the motor 61 drives the pulley 63 to rotate through the worm gear 62, so that the synchronous belt 64 pulls the tension detection unit 4 to move up and down in the vertical direction.
The motor 61 transmits power to the belt wheel 63 through the worm gear 62, and the belt wheel 63 drives the synchronous belt 64 to move up and down, so that the tension testing unit is pulled to move along the synchronous belt 64; and the tensile force test unit is connected with the test sample strip 11 through the clamping unit 3, therefore, when the tensile force test unit moves upwards, the test sample strip 11 is pulled upwards to strip the surface of the pipeline 1, and the stripping speed in the test process is controlled by the motor 61 and the worm gear 62; meanwhile, in the test process, as the stripping test sample strip 11 is gradually lengthened, the displacement transmission in the stripping process is realized through the belt wheel 63 and the synchronous belt 64; meanwhile, with the continuous stripping, the roller 21 is pushed forwards synchronously with the stripping of the whole body under the action of the tensile force of the test sample strip 11, so that the stripped test sample strip 11 is kept perpendicular to the tangent line of the pipeline 1 as much as possible, and the accuracy of the final test data is improved; in addition, the pipe bottom detector can integrally do uniform-speed circular motion around the pipeline 1 through the rollers 21, so that the pipe bottom with the weakest corrosion resistance can be detected.
As shown in fig. 3, also referring to fig. 1, further, the pipeline 1 coating peeling strength testing apparatus further includes a support frame 22, a guide wheel 51, a entrainment beam 5, and a position sensor, the supporting frame 22 is arranged inside the shell 2, the entrainment beam 5 is arranged between the tension detection unit 4 and the synchronous belt 64, the entrainment beam 5 is respectively connected with the tension detection unit 4 and the synchronous belt 64, the guide wheel 51 is arranged between the entrainment beam 5 and the support frame 22, the entrainment cross beam 5 is connected with the guide wheel 51, the entrainment cross beam 5 can drive the guide wheel 51 to move up and down along the support frame 22, the position sensor is connected with the control system 9, and the position sensor is used for detecting the height of the entrainment beam 5 and controlling the motor 61 to stop according to the height of the entrainment beam 5.
In the embodiment, the guide wheels 51 are two ball wheels with annular bearings, which are respectively sleeved on two ends of the entrainment cross beam 5, and the guide wheels 51 are clamped on the inner side by the support frame 22, so that the guide wheels 51 can move up and down along the inner side of the support frame 22; when the entrainment beam 5 moves up and down along with the belt 64, the entrainment beam 5 moves up and down along the support frame 22 together with the guide wheel 51 because the guide wheel 51 is restrained by the support frame 22; the clamping belt beam 5 is arranged between the tension detection unit 4 and the synchronous belt 64, the clamping belt beam 5 is provided with meshing teeth matched with the synchronous belt 64, the clamping belt beam 5 is meshed with the synchronous belt 64, the clamping belt beam 5 drives the tension detection unit 4 to move along with the synchronous belt 64, and therefore the movement of the tension detection unit 4 is also limited by the guide of the guide wheel 51, so that the stripped test sample strip 11 is kept perpendicular to the tangent line of the pipeline 1 as much as possible, namely, the stripped test sample strip is kept at 90 degrees to the maximum.
As shown in fig. 2, further, the pipeline 1 coating peeling strength testing apparatus further includes a fixing knob 52, the fixing knob 52 is disposed on the entrainment beam 5, and in operation, the entrainment beam 5 is connected to the synchronous belt 64 through the fixing knob 52.
In the embodiment of the invention, the entrainment cross beam 5 is provided with meshing teeth matched with the synchronous belt 64, the fixing knob 52 is used for connecting the entrainment cross beam 5 with the synchronous belt 64 during work, and after the work is finished, the entrainment cross beam 5 is separated from the synchronous belt 64; the fixing knob 52 can be realized in various manners, and the fixing knob 52 can be screwed into or out of the through hole to realize the connection or separation of the entrainment beam 5 and the synchronous belt 64 by arranging the through hole on the synchronous belt 64; the connection or the separation of the entrainment beam 5 and the timing belt 64 can also be realized by clamping or loosening the entrainment beam 5 and the timing belt 64 by means of a spring through the action force of the spring.
As shown in fig. 4, specifically, the control system 9 includes an electronic control circuit board, the electronic control circuit board is provided with a CPU and a memory, the CPU is connected with the motor 61 through a motor 61 controller, and the CPU is further connected with the tension detection unit 4, the temperature detection unit 7, and the position sensor, respectively.
The electronic control circuit board realizes the automatic control of the device; the electronic control circuit is connected with a power supply through the power supply management circuit, and the power supply can meet the power supply requirement of the device; meanwhile, the CPU includes a register for storing the tension value and the temperature value and a serial port for connecting to the output system 8, and a memory may be additionally provided for data storage, in this embodiment, the serial port is an interface for power supply and data transmission provided on the device case 2; the CPU is connected with the motor 61 through a motor 61 control circuit to control the rotation of the motor 61 and pull the test sample strip 11; the tension sensor is connected with the CPU through the signal conditioning circuit, converts measured tension data into digital signals through the signal conditioning circuit, transmits the digital signals to the CPU, analyzes the digital signals into numerical values and records the numerical values in the memory; meanwhile, an infrared temperature detector generally adopts an infrared temperature probe which is connected with the CPU through a temperature conversion circuit, and the temperature detected by the infrared temperature detector is transmitted to the CPU through the temperature conversion circuit and stored in a memory to realize automatic test and automatic recording; the position of the position sensor is not limited, and the position information of the entrainment beam 5 may be measured and transmitted to the CPU, and the CPU controls the motor 61 to start and stop.
As shown in fig. 2, in the present embodiment, an operation control button 91 is provided on the housing 2, and operation information is input to the CPU according to different key operations, so that different operations of the present invention, such as controlling the motor 61, selecting a test function, and the like, are controlled by controlling the CPU.
As shown in fig. 1, the pipe 1 coating peeling strength testing apparatus preferably further includes an output system 8, and the output system 8 is connected to the CPU.
As shown in fig. 1, the output system 8 further includes a communication interface 81 and a printer 82, and both the communication interface 81 and the printer 82 are connected to the CPU.
Further, the output system 8 further comprises a display, and the display is connected with the CPU.
The CPU transmits the test data to the output system 8, so that the output of the test data is realized; the output system 8 can be implemented in various ways, such as a printer 82, which prints out the peel force curve and the temperature curve; or a display, and the peeling force curve and the temperature curve are displayed; or a combination of the printer 82 and a display; the communication interface 81 can also be used for connecting corresponding equipment according to requirements; in this embodiment, the display is a liquid crystal panel.
Preferably, the device for testing the coating peel strength of the pipeline 1 comprises a laser indicator, wherein the laser indicator is connected with the CPU, and the laser indicator is used for indicating the position of the temperature test point.
The CPU is connected with the laser indicator through the laser lamp control circuit, and controls the movement of a laser beam emitted by the laser indicator, so that the laser beam indicates the position of a temperature test point currently detected by the infrared temperature detector.
In the embodiment of the invention, the rotation of a motor 61 is controlled by a CPU, a tension sensor is driven to move by the arrangement of a worm gear 62, a belt wheel 63 and a synchronous belt 64, the tension sensor is driven to move along a support frame 22 by a guide wheel 51, a test sample bar 11 is pulled to peel the surface of a pipeline 1 at an angle of 90 degrees to the maximum extent, the peeling force and the real-time temperature at the peeling position are respectively monitored by the tension sensor and an infrared temperature detector, the real-time temperature are recorded and stored after being processed by an electronic control circuit board, the real-time temperature is transmitted to a printer 82 through a power supply and data transmission interface arranged on a shell 2 after the test is finished, test information, peeling and temperature curves are output, the automatic test of the coating peeling strength test of the pipeline 1 is realized, and the influence of; the invention has light weight, small volume, portability, easy operation and high precision, is suitable for being directly used on the surface of the pipeline 1 on site, and effectively solves the problems that the test speed and angle cannot be controlled, the stripping curve and the test temperature cannot be recorded and the pipeline bottom with the weakest corrosion resistance cannot be detected when a manual spring scale or force measurement is adopted on site at present, thereby providing a reliable and effective test means for the stripping performance test and evaluation of the pipeline 1 coating.
The device can be suitable for any pipeline 1 with the pipe diameter of more than 150mm, and the specific technical parameters in the embodiment of the invention are as follows:
1. adaptation pipe diameter test piece: is greater than or equal to
2. Adapting the type of coating: three-layer polyethylene (3PE), three-layer polypropylene (3PP), a polyethylene heat-shrinkable tape (HSS), a polyethylene/polypropylene cold-wound tape, a viscoelastic body adhesive tape and the like;
3. adapting to a test piece steel pipe: spiral weld steel pipes, straight weld steel pipes, and seamless steel pipes;
4. force value range: 50-1000N;
5. stripping speed: adjustable within 0-100 mm/min;
6. the temperature of the working environment: -10 to 45 ℃;
8. the power supply mode comprises the following steps: lead acid batteries or lithium ion batteries;
9. power: 12V/10W;
10. the clamping unit 3 and the tension detecting unit 4: about 4 kg;
11. power supply and printing unit weight: about 4 kg;
12. device size: 600 x 400 x 250 mm.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a pipeline coating peel strength test device which characterized in that, pipeline coating peel strength test device includes: the device comprises a shell, a roller, a clamping unit, a tension detection unit, a temperature detection unit, a lifting system and a control system, wherein the tension detection unit is fixedly connected with the clamping unit, the clamping unit is used for clamping and fixing a test sample strip of a pipeline coating, the lifting system is used for pulling the tension detection unit to move up and down, the control system is respectively connected with the tension detection unit, the temperature detection unit and the lifting system, the temperature detection unit is used for detecting the temperature of a position to be detected, the shell is covered outside the clamping unit, the tension detection unit, the temperature detection unit, the lifting system and the control system, the roller is arranged below the shell, and the roller is attached to the outer wall of the pipeline;
the tension detection unit is a tension sensor, and the temperature detection unit is an infrared temperature detector;
the lifting system comprises a motor, a worm gear, a belt wheel and a synchronous belt, the belt wheel is fixed in the shell, the belt wheel is meshed with the synchronous belt, the motor is sequentially connected with the worm gear and the belt wheel, and the motor drives the belt wheel to rotate through the worm gear, so that the synchronous belt pulls the tension detection unit to move up and down along the vertical direction;
the device also comprises a support frame, two guide wheels, an entrainment beam and a position sensor which are vertically arranged, wherein the support frame is arranged in the shell, the entrainment beam is arranged between the tension detection unit and the synchronous belt, the entrainment beam is provided with meshing teeth matched with the synchronous belt, the entrainment beam is meshed and connected with the synchronous belt through the meshing teeth, and the entrainment beam is also connected with the tension detection unit;
the leading wheel is the ball wheel of annular bearing, sets up smuggle the crossbeam secretly with between the support frame, just smuggle the crossbeam secretly with the leading wheel is connected, the leading wheel suit is respectively on smuggleing crossbeam both ends secretly, just the leading wheel quilt the support frame card is inboard, smuggle the crossbeam secretly and can drive the leading wheel together along the support frame up-and-down motion, position sensor with control system connects, just position sensor is used for detecting smuggle the height of crossbeam secretly.
2. The pipe coating peel strength test device of claim 1, further comprising a fixing knob, wherein the fixing knob is disposed on the entrainment beam, and the entrainment beam is connected to the synchronous belt through the fixing knob during operation.
3. The pipeline coating peeling strength testing device of claim 2, wherein the control system comprises an electronic control circuit board, a CPU and a memory are arranged on the electronic control circuit board, the CPU is connected with the motor through a motor controller, and the CPU is further connected with the tension detection unit, the temperature detection unit and the position sensor respectively.
4. The pipe coating peel strength test apparatus of claim 3, further comprising an output system, wherein the output system is connected to the CPU.
5. The apparatus of claim 4, wherein the output system comprises a communication interface and a printer, and the communication interface and the printer are both connected to the CPU.
6. The pipe coating peel strength testing apparatus of claim 5, wherein said output system further comprises a display, said display being connected to said CPU.
7. The pipe coating peel strength testing apparatus of claim 6, wherein the pipe coating peel strength testing apparatus comprises a laser pointer, the laser pointer is connected with the CPU, and the laser pointer is used for indicating the position to be measured.
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| CN201511001137.XA CN106918554B (en) | 2015-12-28 | 2015-12-28 | Pipeline coating peel strength test device |
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| CN106918554B true CN106918554B (en) | 2020-02-14 |
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| CN107505261B (en) * | 2017-09-20 | 2023-10-20 | 广州特种承压设备检测研究院 | Mounting peeling strength test fixture, test system and test method thereof |
| CN107782667A (en) * | 2017-11-28 | 2018-03-09 | 中石化石油机械股份有限公司沙市钢管分公司 | Steel tube surface PE anticorrosive coating peeling strength testers |
| CN108548779A (en) * | 2018-05-23 | 2018-09-18 | 东莞市宝大仪器有限公司 | Bi-directional synchronization electronic stripping tester |
| CN108776070B (en) * | 2018-07-06 | 2020-06-26 | 中国建材检验认证集团股份有限公司 | Method for testing bending strength of pipe coating |
| CN109297904A (en) * | 2018-11-22 | 2019-02-01 | 安工腐蚀检测实验室科技（无锡）有限公司 | A kind of experimental rig and test method for evaluating anticorrosive coating peeling intensity |
| CN110146364B (en) * | 2019-06-27 | 2022-01-21 | 华北理工大学 | Evaluation method of plating assistant agent for metal hot dipping |
| CN112924377A (en) * | 2019-12-06 | 2021-06-08 | 昆山华复精密金属有限公司 | Test system and method for stripping force of paint spraying product |
| CN111157447A (en) * | 2020-01-03 | 2020-05-15 | 云南名博包装印刷有限公司 | Device for testing heat resistance of adhesive and testing method using device |
| CN113959941A (en) * | 2021-10-19 | 2022-01-21 | 常州都铂高分子有限公司 | Peeling viscosity detection device and detection method for adhesive tape with re-peeling property |
| CN117074292A (en) * | 2023-06-15 | 2023-11-17 | 江苏普利玛斯轮胎科技有限公司 | Self-repairing tire inner side coating peeling strength testing device |
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