A comprehensive testing device and method for quasi-static abrasion characteristics of abradable seal coating

Abstract

The application discloses a kind of abradable seal coating quasi-static abrasion characteristic comprehensive test device and method, and abrasion matching pair clamping swing lever is installed on swing lever pivot fixed pole by swing lever pivot, one end is connected with movable module, movable module is connected with track, track is fixedly arranged, and movable module can swing around swing lever pivot along the drive abrasion matching pair clamping swing lever;Load detection component is equipped on movable module, and load detection component can detect the mechanical signal conducted by abrasion matching pair clamping swing lever;Abrasion matching pair is installed on the other end of abrasion matching pair clamping swing lever, and coating sample clamp is arranged at the position opposite to abrasion matching pair, and coating sample clamp is connected with moving platform, and moving platform can drive coating sample clamp to move;Temperature control device for heating sample is equipped on coating sample clamp.The application can test the cutting force size of abradable seal coating, to guide the preparation of seal coating with good abradability.

Description

Technical Field

[0001] This invention belongs to the field of performance testing of wearable sealing coatings, specifically relating to a comprehensive testing device and method for quasi-static wear characteristics of wearable sealing coatings. Background Technology

[0002] As the aviation industry places increasingly higher demands on the thrust, thrust-to-weight ratio, and fuel efficiency of turbine engines, the inlet temperature and gas pressure of engines are gradually increasing, leading to harsher service environments for the compressor and turbine blades. During aero-engine operation, factors such as differences in thermal expansion of the engine rotor and casing materials, and blade elongation effects, can cause intense friction between the blade tips and the inner wall of the casing, resulting in frictional heat accumulation and blade tip wear, which may ultimately lead to the destruction of the aero-engine.

[0003] The aforementioned problems can be solved by applying a wear-resistant sealing coating inside the casing. When the blades rub against the casing, the coating actively protects both the blades and the casing through sacrificial wear. Simultaneously, during the rubbing process, the blades embed into the coating, forming a good mating with it and reducing tip clearance. The smaller the compressor tip clearance, the higher the engine efficiency and the lower the fuel consumption. For every 0.076 mm reduction in compressor radial clearance, the engine's unit fuel consumption will decrease by 1%. Under the same fuel consumption conditions, the thrust-to-weight ratio can be increased by 2.5%.

[0004] The cutting force of abrasive sealing coatings on aero-engine rotor blades reflects the quality of the coating's active wear characteristics, thus guiding the preparation of sealing coatings with good wearability and fully protecting aero-engine blades and casings. The cutting process of abrasive coatings is extremely complex. Currently, the cutting force of abrasive sealing coatings is mostly measured using high-speed abrasion machines. However, due to vibration and blade elongation effects during the operation of high-speed abrasion machines, the cutting force of abrasive sealing coatings at a certain cutting depth cannot be accurately reflected. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the purpose of this invention is to provide a comprehensive testing device and method for the quasi-static wear characteristics of abrasive sealing coatings. This invention can test the cutting force of abrasive sealing coatings, thereby guiding the preparation of sealing coatings with good abrasiveness.

[0006] The technical solution adopted in this invention is as follows:

[0007] A comprehensive testing device for the quasi-static wear characteristics of a wear-resistant sealing coating includes a motion track, a movable module, a wear-resistant mating clamping pendulum, a pendulum shaft, a pendulum shaft fixing rod, a moving platform, and a coating sample fixture. The pendulum shaft fixing rod is vertically arranged. The wear-resistant mating clamping pendulum is mounted on the pendulum shaft fixing rod via the pendulum shaft. One end of the wear-resistant mating clamping pendulum is connected to the movable module. The movable module is connected to the motion track, which is fixedly arranged. The movable module can move along the motion track and drive the wear-resistant mating clamping pendulum. The pendulum swings around its pivot axis; a load detection component is provided on the movable module, which can detect the mechanical signal transmitted by the pendulum held by the wear-resistant mating pair; a wear-resistant mating pair is installed at the other end of the pendulum held by the wear-resistant mating pair, and a coating sample fixture is set at a position opposite to the wear-resistant mating pair. The coating sample fixture is used to install the wear-resistant sealing coating sample to be tested and is connected to the moving platform. The moving platform can drive the coating sample fixture to move, so that the wear-resistant sealing coating sample to be tested contacts or separates from the wear-resistant mating pair, and controls the depth to which the wear-resistant mating pair cuts into the sample to be tested.

[0008] The coating sample holder is equipped with a temperature control device, which can maintain the abrasive sealing coating sample to be tested at a preset temperature.

[0009] Preferably, the comprehensive testing device for quasi-static wear characteristics of wear-resistant sealing coatings of the present invention further includes a central control unit, and the temperature control device, movable module, movable platform and load detection component are all connected to the central control unit.

[0010] Preferably, the temperature control device includes a coating sample heater and a sample temperature sensor; the coating sample heater is used to heat the wearable sealing coating sample to be tested to a specified temperature, or to ensure that the wearable sealing coating sample to be tested is kept constant at a specified temperature; the sample temperature sensor is used to measure the temperature of the wearable sealing coating sample to be tested.

[0011] Preferably, the detection end of the sample temperature sensor is in contact with the wearable sealing coating sample to be tested.

[0012] Preferably, the load detection component includes a mechanical sensor and a rigid force measuring head. The rigid force measuring head is disposed on a movable module. The movable module has the rigid force measuring head on both sides of the wear-fitted clamping swing arm. One end of the rigid force measuring head is in contact with the wear-fitted clamping swing arm, and the other end of the rigid force measuring head is connected to the mechanical sensor. The mechanical sensor is connected to the main control unit.

[0013] Preferably, the wear-resistant mating clamping lever and the wear-resistant mating are connected by wear-resistant mating fasteners.

[0014] Preferably, the mobile platform is equipped with a wear debris collection component, which is located below the coating sample holder and is used to collect the wear debris generated during the wear process of the wearable sealing coating sample to be tested.

[0015] Preferably, the motion track is an arc-shaped track or a straight track, and the concave side of the arc-shaped track faces the wear-resistant clamping arm.

[0016] The present invention also provides a comprehensive testing method for the quasi-static wear characteristics of wearable sealing coatings. This testing method is performed using the comprehensive testing device for the quasi-static wear characteristics of wearable sealing coatings described above, and includes the following steps:

[0017] S1. Adjust the pendulum shaft fixing rod, movable module, and moving platform to make the wear pair flush with the wear area of ​​the wearable sealing coating sample to be tested; then adjust the position of the movable module to make the wear pair away from the wear area of ​​the wearable sealing coating sample to be tested, and adjust the moving platform to determine the maximum wear depth of the wear pair.

[0018] S2. The abrasive sealing coating sample to be tested is maintained at a preset temperature using a temperature control device;

[0019] S3. Start the movable module. The movable module moves back and forth on the motion track. At the same time, the movable module drives the wear-resistant mating clamping swing arm to rotate around the swing arm's axis, so that the wear-resistant mating cuts into the wear-resistant sealant coating sample to be tested.

[0020] S4. After the wear pair reaches the maximum wear depth, measure the weight (g) of the wearable sealing coating sample to be tested. 02 Weight of the wear pair (g) 12 ;

[0021] S5. Calculate the wear loss Δm0 = g of the wear-resistant sealing coating sample to be tested. 01 -g 02 The wear weight loss of the wear pair Δm1=g 11 -g 12 The ratio of △m0 / △m1 is used as the wear ratio. Combined with the detection signal of the load detection component, the wear force at different cutting depths is calculated. The wear force is the force under the condition that the width and depth or cutting area of ​​the wear pair cutting into the wearable sealing coating sample to be tested are used.

[0022] Among them, g 01 The initial weight (g) of the abrasive sealant coating sample to be tested. 11 This is the initial weight of the wear pair.

[0023] The comprehensive testing method for the quasi-static wear characteristics of wear-resistant sealing coatings of the present invention further includes the following steps:

[0024] Before performing S1, adjust the moving platform to keep the wear-resistant mating pair away from the wear-resistant sealing coating sample to be tested. Start the moving module, which will drive the wear-resistant mating pair to idle. Record the detection signal of the load detection component at this time and perform zero calibration. Then perform S1.

[0025] The present invention has the following beneficial effects:

[0026] In the quasi-static wear characteristic comprehensive testing device for wear-resistant sealing coatings of this invention, a wear-resistant mating clamping pendant is mounted on a pendant shaft fixing rod via a pendant shaft, allowing the wear-resistant mating clamping pendant to rotate freely around the pendant shaft. A movable module is set on a motion track, with one end of the wear-resistant mating clamping pendant connected to the movable module. The reciprocating motion of the movable module on the motion track enables the reciprocating swing of the wear-resistant mating clamping pendant. The movable module is equipped with a load detection component, which can detect the mechanical signal transmitted by the wear-resistant mating clamping pendant. This mechanical signal can be converted... The static wear force is converted into the magnitude of the wear force. Therefore, the magnitude of the static wear force can be obtained during the reciprocating swing of the pendulum held by the wear pair. The other end of the pendulum held by the wear pair is equipped with a wear pair, so during the reciprocating swing of the pendulum held by the wear pair, the wear pair can be used to wear the wearable sealing coating sample to be tested. By setting the coating sample fixture and the moving platform, the wear depth of the wear pair can be controlled. The temperature control device can be used to heat the wearable sealing coating sample to be tested and maintain it at a preset temperature to simulate the wear environment of the wearable sealing coating sample to be tested at different temperatures. Finally, by measuring the wear weight loss of the wearable sealing coating sample, the wear weight loss of the wear pair, and the magnitude of the wear force measured by the load detection component, the wear force at different cutting depths can be obtained. The wear force is the force under the condition that the width and depth or cutting area of ​​the wear pair cutting into the wearable sealing coating sample to be tested is taken as the wear force. Therefore, this invention can test the cutting force of abrasive sealing coatings, thereby guiding the preparation of sealing coatings with good abrasiveness. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structural principle of the comprehensive testing device for the quasi-static wear characteristics of the wear-resistant sealing coating of the present invention;

[0028] Figure 2 This is a schematic diagram of the cutting wear of the wear-resistant mating pair and the wear-resistant sealing coating sample to be tested in an embodiment of the present invention.

[0029] In the figure: 1. Arc-shaped track, 2. Movable module, 3. Load detection component, 4. Wear-resistant fitting clamping swing arm, 5. Swing arm pivot, 6. Pivot fixing rod, 7. Wear-resistant fitting fastener, 8. Sample clamp, 9. Horizontal moving platform, 10. Sample temperature sensor, 11. Sample heater, 12. Main control unit, 13. Wear debris collection component, 14. Wear-resistant fitting, 15. Abrasion-resistant sealing coating sample to be tested. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0032] See Figure 1 The comprehensive testing device for quasi-static wear characteristics of wearable sealing coatings of the present invention includes wear pair fixing and moving parts (1-2 and 4-7), load detection part 3, coating sample fixing and moving parts (8-9), coating sample temperature sensor 10, coating sample heater 11, main control unit 12, and wear debris collection part 13.

[0033] The wear-resistant mating component includes an arc-shaped track 1, a movable module 2, a wear-resistant mating clamping swing arm 4, a swing arm pivot 5, a swing arm pivot fixing rod 6, and a wear-resistant mating fastener 7. The wear-resistant mating component 14 is fixed to the wear-resistant mating clamping swing arm 4 via the wear-resistant mating fastener 7. The wear-resistant mating clamping swing arm 4 is fixed to the swing arm pivot fixing rod 6 via the swing arm pivot 5. The wear-resistant mating clamping swing arm 4 is connected to the movable module 2, which has a built-in load detection component 3. The movable module 2 can drive the wear-resistant mating clamping swing arm 4 to rotate, causing the wear-resistant mating component 14 to cut the wear-resistant sealing coating sample 15 to be tested. The central control unit 12 controls the start and stop of the movable module 2 and detects its position, providing power to the movable module to drive the wear-resistant mating clamping swing arm to rotate and cut the coating.

[0034] The load detection component 3 is built into the movable module 2. The distal end of the wear-resistant mating clamping swing arm 4 is connected to the load detection component 3 to collect the mechanical signals transmitted by the wear-resistant mating clamping swing arm 4. The central control unit 12 receives and processes the load data obtained by the load detection component 3. Specifically, the load detection component includes a mechanical sensor and a rigid force measuring head. The distal end of the wear-resistant mating clamping swing arm 4 ( Figure 1 The left end (as shown) extends into the mechanical sensor. When the movable module 2 moves, the mechanical sensor drives the wear-resistant mating clamping lever to rotate, and collects mechanical signals in real time through the rigid force measuring head. The mechanical sensor is connected to the central control unit to provide real-time feedback of mechanical signals.

[0035] The coating sample fixing and moving components (8-9) include a sample clamp 8 and a moving platform 9. The wearable sealing coating sample 15 to be tested is fixed to the moving platform 9 by the sample clamp 8. The sample clamp 8 is fixed on the horizontal moving platform 9. The horizontal moving platform 9 can drive the sample clamp 8 to move horizontally in the XY direction, thereby realizing the position adjustment of the wearable sealing coating sample 15 to be tested.

[0036] The heating and temperature control components include a coating sample temperature sensor 10 and a sample heater. The coating sample temperature sensor 10 is used to measure the temperature of the wearable sealing coating sample 15 to be tested. The coating sample heater 11 is used to heat the wearable sealing coating sample 15 to a specified temperature or to keep the wearable sealing coating sample 15 at a specified temperature. The heating plane of the coating sample temperature sensor 10 is parallel to the wearable sealing coating sample 15 to be tested, and the coating sample temperature sensor 10 is welded to its back side. The central control unit can adjust the heating power and can also manually control the power. The sample heater is connected to the central control unit, processes the temperature signal in real time, and displays it on the main screen. Both the coating sample temperature sensor 10 and the sample heater are connected to the central control unit 12.

[0037] The central control unit 12 of the present invention provides power to the movable module 2, the load detection component 3, the coating sample temperature sensor 10 and the coating sample heater 11, receives and processes the signals fed back by each unit, issues motion commands to each moving component, displays and realizes human-machine interaction operation.

[0038] The wear debris collection component 13 is used to collect wear debris generated during the wear process of the wearable sealing coating sample 15 to be tested. The wear debris collection component 13 includes a guide channel and a collection tray. The guide channel is directly below the area of ​​the sample to be ground, and the tray collects the wear debris generated during the cutting process.

[0039] The central control unit 12 includes a PC and a power unit. It can receive and process signals fed back from the movable module 2, the load detection component 3, the coating sample temperature sensor 10, and the coating sample heater 11, and display them on the main screen of the PC in real time. It can also issue motion commands to the movable module 2, the load detection component 3, the coating sample temperature sensor 10, and the coating sample heater 11, provide power, and display and realize human-machine interaction operation.

[0040] The movable module moves slowly on an arc-shaped track, driving the wear-fitting pair clamping lever to perform an arc-shaped motion and cut the coating. The mechanical signal measured by the load detection component is transmitted to the PC, and the actual cutting force is obtained through lever arm calculation. The moving speed of the movable module can be controlled by the PC.

[0041] As another embodiment of the present invention, the arc track 1 can be simplified to a straight track. When calculating the wear force, the cutting width and cutting depth or cutting area are calculated based on the positional geometrical relationship between the movable module 2, the wear-resistant clamping swing arm 4, the swing arm pivot 5, the swing arm pivot fixing rod 6, the wear-resistant fastener 7, the wear-resistant pair 14, and the wear-resistant sealing coating sample 15 to be tested.

[0042] Based on the above-mentioned testing apparatus, the comprehensive testing method for the quasi-static wear characteristics of the wear-resistant sealing coating of the present invention includes the following steps:

[0043] S001. Test and record the initial weight (g) of 15 abrasion-resistant sealing coating sample to be tested. 01 Adjust the moving platform 9 to the initial position, and then fix the wearable sealing coating sample to be tested to the coating sample fixture 8; the wearable sealing coating sample 15 to be tested includes an alloy substrate and a wearable sealing coating sprayed on the surface of the alloy substrate.

[0044] S002. Select a suitable wear pair, measure the length of the wear pair, input the length of the wear pair into the main control unit 12, and test and record the initial weight (g) of the wear pair 14. 11 Then it is fixed to the wear-resistant pair clamping swing arm 4.

[0045] S003. Adjust the moving platform 9 to move the wear-resistant mating pair 14 away from the wear-resistant sealing coating sample 15 to be tested. Start the movable module 2 in the main control unit 12. The movable module 2 drives the wear-resistant mating pair 14 to rotate idling. Record the magnitude of the mechanical signal at this time in the main control unit 12 and perform zero calibration.

[0046] S004. Adjust the pendulum shaft fixing rod 6, the movable module 2, and the moving platform 9 to make the wear-resistant pair 14 flush with the wear-resistant area of ​​the wearable sealing coating sample 15 to be tested. Then adjust the position of the movable module 2 to move the wear-resistant pair 14 away from the wear-resistant area, and adjust the moving platform 9 to determine the maximum wear depth of the wear-resistant pair 14.

[0047] S004. Use the main control unit 12 to turn on the coating sample heater 11, and adjust the power parameters according to the temperature feedback from the coating sample temperature sensor 10 to preheat the wearable sealing coating sample to be tested.

[0048] S005. After the sample temperature reaches the test requirements, the movable module 2 is activated in the main control unit 12. The movable module 2 drives the wear pair clamping swing arm 4 to rotate, so that the wear pair 14 cuts into the wear testable wearable sealing coating sample 15.

[0049] S006, the main control unit 12 records the signal transmitted from the load detection component 3 and converts it into the magnitude of static wear force.

[0050] S006. After the test, remove the sample and record the weight (g) of the wearable sealing coating sample 15 and the wear-resistant pair 14 after wear. 02 and g 12 .

[0051] S007, Weight loss of coating sample due to wear Δm0 = g 01 -g 02 Wear loss of the wear pair Δm1=g 11 -g 12 Using the ratio of △m0 / △m1 as the wear ratio, and combining it with the obtained load data, the wear force at different penetration depths is calculated. The wear force is the force under the condition that the width and depth or penetration area of ​​the wear pair 14 into the wearable sealing coating sample 15 to be tested is used.

[0052] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the specific embodiments.

[0053] Example 1

[0054] See Figure 1In this embodiment, the quasi-static wear characteristic comprehensive testing device for wear-resistant sealing coatings includes a slider (i.e., movable module 2) mounted on an arc-shaped track. The slider moves along the arc-shaped track under the power of a stepper motor mounted on it. The slider also has a built-in mechanical sensor and a rigid force measuring head (i.e., load detection component). The slider is connected to a central control unit, where a PC controls the start and stop of the slider movement and detects its position. The PC receives, processes, and transmits mechanical signals. The rigid force measuring head contacts one end of a tool clamping lever. The tool clamping lever (i.e., wear-resistant mating lever 4) is mounted on a lever shaft fixing rod via a lever shaft. The tool clamping lever can rotate under the drive of the slider. The other end of the tool clamping lever has a fastening screw (as a wear-resistant mating fastener 7), and the tool (i.e., the wear-resistant mating component) is fixed to the tool clamping lever by the fastening screw. The sample fixture is fixed on a horizontal moving platform, which can achieve movement on a plane. Figure 1 The sample moves in the XY direction on a plane parallel to the paper (as shown). An induction heating head (as sample heater 11) is installed 3mm behind the sample clamping point of the sample holder. The induction heating head is connected to the main control unit, and the heating power can be adjusted via the PC in the main control unit. The main control unit is also connected to a temperature-measuring thermocouple (i.e., sample temperature sensor 10). The thermocouple can contact the coating being tested and transmit temperature signals to the main control unit, displaying the real-time temperature on the main screen. The main control unit includes a PC and a main screen. The PC can perform signal processing and data calculation, primarily processing mechanical and temperature signals and displaying them in real-time on the main screen, inputting scraping features, and converting the processed mechanical signals. It can also achieve complete control of the quasi-static abrasion characteristic comprehensive testing device for abrasive sealing coatings, primarily controlling the start and stop of the moving slider and detecting its position, as well as controlling the start / power of the induction heating system. A guide channel is fixed on the horizontal moving platform, extending to the collection tray. The abrasive debris generated after scraping enters the collection tray along the guide channel.

[0055] Example 2

[0056] In this embodiment of the comprehensive testing device for the quasi-static wear characteristics of abrasive sealing coatings, the arc-shaped track in Embodiment 1 is replaced with a linear track. A slider is installed on the linear track, and the slider can move on the linear track under the power drive of a stepper motor installed on it. The slider also has a built-in mechanical sensor and a rigid force measuring head. The slider is connected to the central control unit, and the PC in the central control unit controls the start and stop of the moving slider and detects its position. The PC in the central control unit receives, processes, and transmits mechanical signals. The rigid force measuring head contacts one end of the tool clamping swing arm. The tool clamping swing arm is mounted on the swing arm shaft fixing rod through the swing arm shaft. The tool clamping swing arm can move under the action of the slider. The other end of the tool clamping swing arm has a fastening screw, and the tool is fixed to the tool clamping swing arm by the fastening screw. The sample fixture is fixed on a horizontal moving platform, which can realize the movement on a plane ( Figure 1 The sample moves in the XY direction (parallel to the plane of the paper). An induction heating magnetic head is installed 3mm behind the sample clamping point of the sample holder. The induction heater is connected to the main control unit, and the heating power can be adjusted via the PC in the main control unit. The main control unit is also connected to a temperature-measuring thermocouple, which can contact the coating being tested and transmit temperature signals to the main control unit, displaying the real-time temperature on the main screen. The main control unit includes a PC and a main screen. The PC can perform signal processing and data calculation, primarily processing mechanical and temperature signals and displaying them in real-time on the main screen, inputting scraping features, and converting the processed mechanical signals. It also provides complete control over the quasi-static abrasion characteristic comprehensive testing device for abrasive sealing coatings, primarily controlling the start and stop of the moving slider and detecting its position, as well as controlling the start / power of the induction heating system. A guide channel is fixed on the horizontal moving platform, extending to the collection tray. Abrasive debris generated after scraping enters the collection tray along the guide channel.

[0057] Example 3

[0058] This embodiment uses Figure 1 Taking the structure of the comprehensive testing device for the quasi-static wear characteristics of wearable sealing coatings shown in Example 1 as an example, the comprehensive testing method for the quasi-static wear characteristics of wearable sealing coatings is described. The testing method includes the following steps:

[0059] Step 1: Spray the sealing coating to be tested onto the alloy substrate and record the initial weight (g) of the test sample. 01 It is secured to the fixture 8 using wear-resistant fasteners.

[0060] Step 2: Select a suitable wear pair 14, measure its length L, and test and record the initial weight g of the wear pair. 11 And fix it to the wear-resistant pair clamping swing arm 4.

[0061] Step 3: Open the main control unit 12 and input the initial tool length L.

[0062] Step 4: Open the main control unit 12, adjust the moving speed of the movable module to 0.25mm / s, start the movable module, and make the movable module drive the wear pair to idle. Record the magnitude of the mechanical signal at this time in the main control unit 12 and perform zero calibration.

[0063] Step 5: After zeroing and calibration, adjust the movable module to make the wear pair horizontal, and at the same time adjust the rotating shaft fixing rod 6 and the horizontal moving platform 9 to make the paired tool 14 and the cutting area of ​​the wearable sealing coating sample 19 to be tested flush.

[0064] Step 6: Activate movable module 2 to move the wear pair away from the test sample, and then adjust the horizontal moving platform to feed 200μm.

[0065] Step 7: Turn on the main control unit 12, adjust the heating power parameter to 12kW, and preheat the wearable sealing coating sample to be tested.

[0066] Step 8: Observe the temperature of the wearable sealing coating sample to be tested displayed in the main control unit 12. After the temperature stabilizes at 500℃, use the PC to turn on the movable module 2 and drive the wear pair to cut the wearable sealing coating sample to be tested.

[0067] Step 9: Turn on the main control unit 12, record the signal transmitted from the mechanical sensor, and convert it into the magnitude of the static cutting force.

[0068] Step 10: After the test is completed, remove the sample and record the weight (g) of the worn coating sample and the worn mating pair. 02 and g 12 .

[0069] Step 11: Weight loss of coating sample due to wear Δm0 = g 01 -g 02 Wear loss of the wear pair Δm1=g 11 -g 12 Based on the obtained wear force data, the wear force at different cutting depths is calculated.

[0070] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A comprehensive testing device for the quasi-static wear characteristics of a wear-resistant sealing coating, characterized in that, The system includes a motion track, a movable module (2), a wear-resistant mating clamping swing rod (4), a swing rod shaft (5), a swing rod shaft fixing rod (6), a coating sample fixture (8), and a moving platform (9). The swing rod shaft fixing rod (6) is vertically arranged. The wear-resistant mating clamping swing rod (4) is mounted on the swing rod shaft fixing rod (6) via the swing rod shaft (5). One end of the wear-resistant mating clamping swing rod (4) is connected to the movable module (2). The movable module (2) is connected to the motion track, which is fixedly arranged. The movable module (2) can move along the motion track and drive the wear-resistant mating clamping swing rod (4) to swing around the swing rod shaft (5). The upper part is provided with a load detection component (3), which can detect the mechanical signal transmitted by the wear-resistant mating clamping swing arm (4); the other end of the wear-resistant mating clamping swing arm (4) is equipped with a wear-resistant mating pair (14), and the coating sample fixture (8) is set at the position opposite to the wear-resistant mating pair (14). The coating sample fixture (8) is used to install the wear-resistant sealing coating sample (15) to be tested and is connected to the moving platform (9). The moving platform (9) can drive the coating sample fixture (8) to move so that the wear-resistant sealing coating sample (15) to be tested contacts or separates from the wear-resistant mating pair (14), and controls the depth of the wear-resistant mating pair (14) cutting into the sample (15) to be tested. The coating sample holder (8) is equipped with a temperature control device, which can maintain the wearable sealing coating sample (15) to be tested at a preset temperature.

2. The comprehensive testing device for quasi-static wear characteristics of a wearable sealing coating according to claim 1, characterized in that, It also includes a central control unit (12), a temperature control device, a movable module (2), a mobile platform (9), and a load detection component (3), all of which are connected to the central control unit (12).

3. A comprehensive testing device for quasi-static wear characteristics of a wearable sealing coating according to claim 1 or 2, characterized in that, The temperature control device includes a coating sample heater (11) and a sample temperature sensor (10); the coating sample heater (11) is used to heat the wearable sealing coating sample (15) to be tested to a specified temperature, or to ensure that the wearable sealing coating sample (15) to be tested is kept constant at a specified temperature; the sample temperature sensor (10) is used to measure the temperature of the wearable sealing coating sample (15) to be tested.

4. The comprehensive testing device for quasi-static wear characteristics of a wearable sealing coating according to claim 3, characterized in that, The detection end of the sample temperature sensor (10) is in contact with the wearable sealing coating sample (15) to be tested.

5. The comprehensive testing device for quasi-static wear characteristics of a wearable sealing coating according to claim 2, characterized in that, The load detection component (3) includes a mechanical sensor and a rigid force measuring head. The rigid force measuring head is set on the movable module (2). The movable module (2) has the rigid force measuring head on both sides of the wear-fitted clamping swing arm (4). One end of the rigid force measuring head is in contact with the wear-fitted clamping swing arm (4), and the other end of the rigid force measuring head is connected to the mechanical sensor. The mechanical sensor is connected to the main control unit (12).

6. The comprehensive testing device for quasi-static wear characteristics of a wear-resistant sealing coating according to claim 1, characterized in that, The wear-resistant pair clamping rocker arm (4) and the wear-resistant pair (14) are connected by the wear-resistant pair fastener (7).

7. The comprehensive testing device for quasi-static wear characteristics of a wearable sealing coating according to claim 1, characterized in that, The mobile platform (9) is equipped with a wear debris collection component (13), which is located below the coating sample fixture (8) and is used to collect the wear debris generated during the wear process of the wearable sealing coating sample (15) to be tested.

8. The comprehensive testing device for quasi-static wear characteristics of a wearable sealing coating according to claim 1, characterized in that, The motion track is an arc track (1) or a straight track, and the concave side of the arc track (1) faces the wear-resistant clamping arm (4).

9. A comprehensive test method for the quasi-static wear characteristics of a wear-resistant sealing coating, characterized in that, The test method is performed using the comprehensive testing device for the quasi-static wear characteristics of wear-resistant sealing coatings as described in any one of claims 1-8, and includes the following steps: S1. Adjust the pendulum shaft fixing rod (6), movable module (2) and moving platform (9) to make the wear pair (14) flush with the wear area of ​​the wearable sealing coating sample (15) to be tested; then adjust the position of the movable module (2) to make the wear pair (14) away from the wear area of ​​the wearable sealing coating sample (15) to be tested, and adjust the moving platform (9) to determine the maximum wear depth of the wear pair (14); S2. The wearable sealing coating sample (15) to be tested is maintained at a preset temperature by a temperature control device; S3. Start the movable module (2). The movable module (2) moves back and forth on the motion track. At the same time, the movable module (2) drives the wear-resistant mating clamping swing arm (4) to rotate around the swing arm pivot (5), so that the wear-resistant mating (14) cuts into the wear-resistant sealant coating sample (15) to be tested. S4. When the wear pair (14) reaches the maximum wear depth, measure the weight (g) of the wearable sealing coating sample (15) to be tested. 02 Weight g of wear pair (14) 12 ; S5. Calculate the wear loss Δm0 = g of the wearable sealing coating sample (15) to be tested. 01 -g 02 The wear weight loss Δm1=g of the wear pair (14) 11 -g 12 The ratio of △m0 / △m1 is used as the wear ratio. Combined with the detection signal of the load detection component (3), the wear force at different cutting depths is calculated. The wear force is the force under the condition that the width and depth or the cutting area of ​​the wear pair (14) cutting into the wearable sealing coating sample (15) to be tested is used. Among them, g 01 The initial weight of the abrasive sealant coating sample (15) to be tested is given in g. 11 The initial weight of the wear pair (14).

10. A comprehensive test method for quasi-static wear characteristics of a wear-resistant sealing coating according to claim 9, characterized in that, It also includes the following steps: Before performing S1, adjust the moving platform (9) to move the wear pair (14) away from the wearable sealing coating sample (15) to be tested, start the movable module (2), the movable module (2) drives the wear pair (14) to idle, record the detection signal of the load detection component (3) at this time, and perform zero calibration; then perform S1.

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