Detection device and detection method for frictional wear performance of wear-resistant coating

Abstract

The invention discloses a device and a method for detecting the frictional wear performance of a wear-resistant coating, and belongs to the field of coating performance detection. The device comprises a wear mechanism and a connecting mechanism; the abrasion mechanism comprises an abrasion bottom plate and a connecting rod arranged in the center of the abrasion bottom plate. A first balance weight lever, a second balance weight lever, a third balance weight lever and a fourth balance weight lever are evenly arranged on the periphery of the connecting rod. A plurality of annular counter weights can be additionally mounted on the connecting rod, the first counter weight rod, the second counter weight rod, the third counter weight rod and the fourth counter weight rod; the connecting mechanism comprises a connecting sleeve capable of being arranged on the connecting rod in a sleeving mode and a connecting plate arranged at the upper end of the connecting sleeve. The connecting plate is fixedly connected with the movable cross beam; spatial movement of the detection device is completed through movement of the movable cross beam. According to the method, the friction and wear performance of the coating can be detected under specified conditions, and the coating coverage rate and the real friction and wear performance of the wear-resistant coating are finally detected by approaching the wear of the coating to the actual working condition for a long time at high frequency.

Description

Technical Field

[0001] The present invention relates to the field of coating performance detection, in particular to a device and method for detecting the friction and wear performance of a wear-resistant coating. Background Art

[0002] With the advancement of surface additive modification technology, various functional coatings can now be prepared on various workpiece surfaces through the use of processes such as laser cladding, high-speed laser cladding, laser alloying, surface induction heat treatment, plasma spraying, and ultra-high-speed flame spraying. For wear-resistant coatings, friction and wear performance is the most important property. Therefore, how to accurately detect and characterize the friction and wear performance of wear-resistant coatings is one of the important directions of coating performance testing. In particular, for wear-resistant coatings with a thickness of less than 0.2mm, existing testing methods have difficulty detecting and reflecting their actual friction and wear performance under actual working conditions, making it impossible to effectively correlate the test results with the actual wear resistance of the coating.

[0003] In view of this, it is necessary to provide a new detection device and method for the friction and wear performance of wear-resistant coatings. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a detection device and method for the friction and wear performance of a wear-resistant coating, which can detect the friction and wear performance of the coating under specified conditions, and finally detect the coating coverage by subjecting the coating to long-term high-frequency wear close to actual working conditions, and detect the actual friction and wear performance of the wear-resistant coating.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A device for detecting the friction and wear performance of a wear-resistant coating, comprising a wear mechanism and a connecting mechanism; The wear mechanism includes a wear base plate and a connecting rod arranged at the center of the wear base plate; a first counterweight rod, a second counterweight rod, a third counterweight rod and a fourth counterweight rod are evenly arranged around the connecting rod; a plurality of annular counterweights can be installed on the connecting rod, the first counterweight rod, the second counterweight rod, the third counterweight rod and the fourth counterweight rod; The connecting mechanism includes a connecting sleeve that can be sleeved on the connecting rod and a connecting plate arranged on the upper end of the connecting sleeve; the connecting plate is fixedly connected to the moving beam; and the spatial movement of the detection device is completed by moving the moving beam.

[0006] A further improvement of the technical solution of the present invention is that the wear base plate has a length of 200 mm, a width of 100 mm and a thickness of 16 mm.

[0007] A further improvement of the technical solution of the present invention is that the diameter of the connecting rod is 10 mm and the height is 200 mm.

[0008] A further improvement of the technical solution of the present invention is that the diameters of the first counterweight rod, the second counterweight rod, the third counterweight rod and the fourth counterweight rod are all 10 mm and the heights are all 150 mm.

[0009] A further improvement of the technical solution of the present invention is that: the thickness of the annular counterweight is 10 mm and the weight is 100 g; each counterweight rod can be equipped with a maximum of 15 annular counterweights.

[0010] A further improvement of the technical solution of the present invention is that the total weight of the wear base plate, the connecting rod, the first counterweight rod, the second counterweight rod, the third counterweight rod and the fourth counterweight rod is 3 kg; a total of 75 annular counterweights can be installed; therefore, the maximum weight of the entire device is 10.5 kg, and the maximum friction force is 102.9 N.

[0011] A further improvement of the technical solution of the present invention is that: a connecting hole for inserting the connecting rod is provided in the middle of the connecting sleeve; a top screw hole is provided on one side of the connecting sleeve; and a top screw is installed in the top screw hole to fix the connecting rod.

[0012] A further improvement of the technical solution of the present invention is that: the height of the connecting sleeve is 60 mm and the diameter is 50 mm; the diameter of the connecting hole is 10.1 mm; and the diameter of the top screw hole is 10 mm.

[0013] A method for detecting the friction and wear properties of a wear-resistant coating, comprising: Before conducting friction and wear testing, stick adhesive sandpaper on the bottom of the wear base plate with the sandpaper facing downwards, and install a specified number of annular counterweights on the first counterweight rod, the second counterweight rod, the first counterweight rod, and the fourth counterweight rod respectively; move the wear base plate to the top of the coating by moving the crossbeam and just contact the coating, loosen the top screw in the top screw hole, and disengage the connecting rod from the connecting sleeve. The connecting rod is only inserted in the connecting sleeve, so that the wear mechanism is only subjected to gravity in the vertical direction; When performing sliding friction testing, the moving crossbeam is controlled to move back and forth to drive the wear base plate to slide on the coating, and the sliding wear test is performed according to the specified time and number of times; When performing rolling friction testing, fix the coated workpiece on a rotary mechanism or machine tool, control the wear base to be stationary, rotate the coated workpiece at a specified speed, and perform rolling wear testing for a specified time and number of times; After completing the specified friction and wear, take a 50mm×50mm area in the center of the wear area and use a graphic analyzer to test it. Test one point every 10mm to detect the percentage of the remaining coating area. Then calculate the average value to determine the average percentage of the remaining coating area as the final test result.

[0014] A further improvement of the technical solution of the present invention is that the roughness of the adhesive-coated sandpaper is 60 mesh to 2000 mesh.

[0015] Due to the adoption of the above technical solution, the technical advancements achieved by the present invention are: During friction and wear testing, the wear mechanism is disconnected from the connecting plate. The sandpaper is vertically acted upon only by the weight of the wear mechanism, maintaining a constant pressure throughout the entire wear test. The wear base plate, connecting rod, and counterweights weigh 3 kg. Pressure can be adjusted as needed by adding annular counterweights, with a maximum mass of 10.5 kg and a pressure of 102.9 N. This allows the test pressure to be adjusted based on wear requirements.

[0016] 2. The present invention can select the sandpaper mesh size according to the wear requirements and determine the wear test roughness.

[0017] 3. The present invention can complete sliding friction and rolling friction tests.

[0018] 4. The testing device of the present invention has low cost and is easy to install.

[0019] 5. The present invention can complete the wear resistance test of small thickness coatings and is highly representative.

[0020] 6. The counterweight in the present invention is an annular counterweight and is installed on a counterweight rod or a connecting rod, which solves the problem of fixing the counterweight during the entire wear process.

[0021] 7. The present invention uses an image analyzer to test the remaining percentage of the coating and then calculates the average value, so that the test results can effectively reflect the degree of coating wear, truly reflect the wear resistance of the coating, and guide process production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive efforts. Figure 1 is a front view of the wear mechanism in an embodiment of the present invention; Figure 2 is a top view of the wear mechanism in an embodiment of the present invention; Figure 3 is a structural diagram of a connecting mechanism in an embodiment of the present invention; Among them, 1. Wear bottom plate; 2. Connecting rod; 3. First counterweight rod; 4. Second counterweight rod; 5. Third counterweight rod; 6. Fourth counterweight rod; 7. Connecting sleeve; 8. Connecting hole; 9. Top screw hole; 10. Connecting plate. DETAILED DESCRIPTION

[0023] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or apparatuses.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "several" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: like Figure 1 、 Figure 2 and Figure 3 As shown, a device for detecting the friction and wear performance of a wear-resistant coating includes a wear mechanism and a connecting mechanism; The wear mechanism includes a wear base plate 1 and a connecting rod 2 arranged at the center position of the wear base plate 1; a first counterweight rod 3, a second counterweight rod 4, a third counterweight rod 5 and a fourth counterweight rod 6 are evenly arranged around the connecting rod 2; a plurality of annular counterweights can be added to the connecting rod 2, the first counterweight rod 3, the second counterweight rod 4, the third counterweight rod 5 and the fourth counterweight rod 6; the function of the first counterweight rod 3, the second counterweight rod 4, the third counterweight rod 5 and the fourth counterweight rod 6 is to add annular counterweights; the connecting rod 2 can be used to add counterweights, and also serves to connect the wear base plate 1 and the connecting plate 10.

[0027] The connecting mechanism includes a connecting sleeve 7 that can be sleeved on the connecting rod 2 and a connecting plate 10 arranged on the upper end of the connecting sleeve 7; the connecting plate 10 is fixedly connected to the moving beam; the spatial movement of the detection device is completed by moving the moving beam.

[0028] Furthermore, the wear base plate 1 has a length of 200 mm, a width of 100 mm, and a thickness of 16 mm.

[0029] Furthermore, the connecting rod 2 has a diameter of 10 mm and a height of 200 mm.

[0030] Furthermore, the diameters of the first counterweight rod 3, the second counterweight rod 4, the third counterweight rod 5, and the fourth counterweight rod 6 are all 10 mm, and the heights are all 150 mm. The distance between the centers of the first counterweight rod 3, the second counterweight rod 4, the third counterweight rod 5, and the fourth counterweight rod 6 and the sides of the wear base plate 1 is 30 mm.

[0031] Furthermore, the thickness of the annular counterweight is 10 mm and the weight is 100 g; each counterweight rod can be equipped with a maximum of 15 annular counterweights.

[0032] Furthermore, the total weight of the wear base plate 1, the connecting rod 2, the first counterweight rod 3, the second counterweight rod 4, the third counterweight rod 5 and the fourth counterweight rod 6 is 3 kg; a total of 75 annular counterweights can be installed; therefore, the maximum weight of the entire device is 10.5 kg, and the maximum friction force is 102.9 N.

[0033] Furthermore, a connecting hole 8 for inserting the connecting rod 2 is provided in the middle of the connecting sleeve 7; a top screw hole 9 is provided on one side of the connecting sleeve 7; and a top screw is installed in the top screw hole 9 to fix the connecting rod 2.

[0034] Furthermore, the connecting sleeve 7 has a height of 60 mm and a diameter of 50 mm, the connecting hole 8 has a diameter of 10.1 mm, and the top screw hole 9 has a diameter of 10 mm. The height of the connecting sleeve 7 is less than that of the connecting rod, so several annular counterweights can be installed at the bottom of the connecting sleeve 7. The diameter of the connecting hole 8 is larger than that of the connecting rod 2, facilitating its insertion. Furthermore, when the top screw is loosened, the connecting rod 2 can be loosely connected to the connecting sleeve 7, remaining inserted into the connecting sleeve 7, so that the wear mechanism is only subject to gravity in the vertical direction.

[0035] A method for detecting the friction and wear properties of a wear-resistant coating, using a device for detecting the friction and wear properties of a wear-resistant coating, comprising: Before conducting the friction and wear test, stick adhesive sandpaper on the bottom of the wear base plate 1, with the sandpaper facing downwards. Install a specified number of annular counterweights on the first counterweight rod 3, the second counterweight rod 4, the first counterweight rod 5 and the fourth counterweight rod 6 respectively; move the wear base plate 1 to the top of the coating by moving the crossbeam so that it just contacts the coating, loosen the top screw in the top screw hole 9, and make the connecting rod 2 and the connecting sleeve 7 not fixedly connected. The connecting rod 2 is only inserted into the connecting sleeve 7, so that the wear mechanism is only subjected to gravity in the vertical direction; When performing sliding friction testing, the movable crossbeam is controlled to move back and forth to drive the wear base plate 1 to slide on the coating, and the sliding wear test is performed according to the specified time and the specified number of times; When performing rolling friction testing, the coated workpiece is fixed on a rotary mechanism or machine tool, the wear base plate 1 is controlled to be stationary, the coated workpiece is rotated at a specified speed, and the rolling wear test is performed for a specified time and number of times; After completing the specified friction and wear, take a 50mm×50mm area in the center of the wear area and use a graphic analyzer to test it. Test one point every 10mm to detect the percentage of the remaining coating area. Then calculate the average value to determine the average percentage of the remaining coating area as the final test result.

[0036] Furthermore, the roughness of the adhesive sandpaper is 60 mesh to 2000 mesh.

[0037] Example 1 A device for testing the friction and wear properties of wear-resistant coatings is used to perform rolling friction testing: (1) Before conducting the friction and wear test, stick 80-grit adhesive sandpaper on the bottom of the wear base plate 1, install a total of 70 ring weights, fix the coated workpiece on the machine tool, move the crossbeam to drive the detection device to move, so that the wear base plate 1 is just in contact with the coating, loosen the top screw, and make the connecting rod 2 and the connecting sleeve 7 not fixedly connected. The connecting rod 2 is only inserted into the connecting sleeve 7, so that the wear mechanism is only subjected to gravity in the vertical direction; (2) The wear base plate 1 is controlled to remain stationary, the machine speed is controlled to 100 rpm, and the accumulated wear time is 2 hours; (3) Take a 50mm×50mm area in the center of the wear area and use a graphic analyzer to test it. Test one point every 10mm to check the percentage of the remaining coating area. (4) After testing, the remaining coating area was 78.9%, indicating that the coating had excellent wear resistance.

[0038] Example 2 A device for testing the friction and wear properties of wear-resistant coatings is used to perform rolling friction testing: (1) Before conducting the friction and wear test, stick 200-grit adhesive sandpaper on the bottom of the wear base plate 1, install a total of 40 ring weights, fix the coated workpiece on the machine tool, move the crossbeam to drive the detection device to move, so that the wear base plate 1 is just in contact with the coating, loosen the top screw, and make the connecting rod 2 and the connecting sleeve 7 not fixedly connected. The connecting rod 2 is only inserted into the connecting sleeve 7 so that the wear mechanism is only subjected to gravity in the vertical direction; (2) The wear base plate 1 is controlled to remain stationary, the machine speed is controlled to 50 rpm, and the accumulated wear time is 1.5 hours; (3) Take a 50mm×50mm area in the center of the wear area and use a graphic analyzer to test it. Test one point every 10mm to check the percentage of the remaining coating area. (4) After testing, the remaining coating area was 32.3%, indicating that the coating had poor wear resistance.

[0039] Example 3 A device for testing the friction and wear properties of wear-resistant coatings is used to perform sliding friction testing: (1) Before conducting the friction and wear test, stick 100-grit sandpaper with adhesive on the bottom of the wear base plate 1, and install a total of 60 ring weights. Fix the coated workpiece on the workbench, and move the crossbeam to drive the detection device to move so that the wear base plate 1 is in contact with the coating. Loosen the top screw and leave the connecting rod 2 and the connecting sleeve 7 unfixed. The connecting rod 2 is only inserted into the connecting sleeve 7 so that the wear mechanism is only subjected to gravity in the vertical direction. (2) The moving crossbeam drives the wear base plate 1 to slide on the coating, 30 times / minute, and the accumulated wear time is 3 hours; (3) Take a 50mm×50mm area in the center of the wear area and use a graphic analyzer to test it. Test one point every 10mm to check the percentage of the remaining coating area. (4) After testing, the remaining area of ​​the coating was 76.4%, indicating that the coating had excellent wear resistance.

[0040] Example 4 A device for testing the friction and wear properties of wear-resistant coatings is used to perform sliding friction testing: (1) Before conducting the friction and wear test, stick 1000-grit sandpaper on the bottom of the wear plate 1 and install 20 annular counterweights. Fix the coated workpiece on the workbench and move the crossbeam so that the wear plate 1 is in contact with the coating. Loosen the top screw and leave the connecting rod 2 and the connecting sleeve 7 loose. The connecting rod 2 is only inserted into the connecting sleeve 7 so that the wear mechanism is only subjected to gravity in the vertical direction. (2) The moving crossbeam drives the wear base plate 1 to slide on the coating, 10 times / minute, and the accumulated wear is 1 hour; (3) Take a 50mm×50mm area in the center of the wear area and use a graphic analyzer to test it. Test one point every 10mm to check the percentage of the remaining coating area. (4) After testing, the remaining area of ​​the coating was 50.4%, indicating that the wear resistance of the coating was average.

[0041] In summary, the present invention can accurately detect the friction and wear performance of the wear-resistant coating, effectively reflect the actual wear resistance of the coating, truly reflect the wear resistance of the coating, and guide process production.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for detecting the friction and wear properties of a wear-resistant coating, characterized by: Including wear mechanism and connection mechanism; The wear mechanism comprises a wear base plate (1), a connecting rod (2) arranged at the center of the wear base plate (1); a first counterweight rod (3), a second counterweight rod (4), a third counterweight rod (5) and a fourth counterweight rod (6) are evenly arranged around the connecting rod (2); a plurality of annular counterweights can be added to the connecting rod (2), the first counterweight rod (3), the second counterweight rod (4), the third counterweight rod (5) and the fourth counterweight rod (6); The connecting mechanism comprises a connecting sleeve (7) that can be sleeved on the connecting rod (2) and a connecting plate (10) arranged at the upper end of the connecting sleeve (7); the connecting plate (10) is fixedly connected to the movable crossbeam; and the spatial movement of the detection device is achieved by the movement of the movable crossbeam.

2. The device for detecting friction and wear properties of a wear-resistant coating according to claim 1, characterized in that: The wear base plate (1) has a length of 200 mm, a width of 100 mm and a thickness of 16 mm.

3. The device for detecting friction and wear properties of a wear-resistant coating according to claim 1, characterized in that: The connecting rod (2) has a diameter of 10 mm and a height of 200 mm.

4. The device for detecting friction and wear properties of a wear-resistant coating according to claim 1, characterized in that: The first counterweight rod (3), the second counterweight rod (4), the third counterweight rod (5) and the fourth counterweight rod (6) all have a diameter of 10 mm and a height of 150 mm.

5. The device for detecting friction and wear properties of a wear-resistant coating according to claim 1, characterized in that: The thickness of the annular counterweight is 10 mm and the weight is 100 g; each counterweight rod can be equipped with a maximum of 15 annular counterweights.

6. The device for detecting friction and wear properties of a wear-resistant coating according to claim 1, characterized in that: The total weight of the wear base plate (1), the connecting rod (2), the first counterweight rod (3), the second counterweight rod (4), the third counterweight rod (5) and the fourth counterweight rod (6) is 3 kg; a maximum of 75 annular counterweights can be installed; therefore, the maximum weight of the entire device is 10.5 kg, and the maximum friction force is 102.9 N.

7. The device for detecting friction and wear properties of a wear-resistant coating according to claim 1, characterized in that: A connecting hole (8) for inserting the connecting rod (2) is provided in the middle of the connecting sleeve (7); a top screw hole (9) is provided on one side of the connecting sleeve (7); and a top screw is installed in the top screw hole (9) to fix the connecting rod (2).

8. The device for detecting friction and wear properties of a wear-resistant coating according to claim 7, characterized in that: The height of the connecting sleeve (7) is 60 mm and the diameter is 50 mm; the diameter of the connecting hole (8) is 10.1 mm; and the diameter of the top screw hole (9) is 10 mm.

9. A method for detecting the friction and wear properties of a wear-resistant coating, using the device for detecting the friction and wear properties of a wear-resistant coating according to any one of claims 1 to 8, characterized in that: include: Before conducting the friction and wear test, glued sandpaper is glued to the bottom of the wear base plate (1), with the sanded surface of the glued sandpaper facing downwards, and a prescribed number of annular counterweights are respectively installed on the first counterweight rod (3), the second counterweight rod (4), the first counterweight rod (5) and the fourth counterweight rod (6); the wear base plate (1) is moved to the top of the coating by moving the crossbeam and just in contact with the coating, the top screw in the top screw hole (9) is loosened, and the connecting rod (2) is separated from the connecting sleeve (7), and the connecting rod (2) is only inserted in the connecting sleeve (7), so that the wear mechanism is only subjected to gravity in the vertical direction; When performing sliding friction testing, the movable crossbeam is controlled to move back and forth to drive the wear base plate (1) to slide on the coating, and the sliding wear test is performed according to a prescribed time and a prescribed number of times; When performing rolling friction testing, the coated workpiece is fixed on a rotary mechanism or a machine tool, the wear base plate (1) is controlled to be stationary, the coated workpiece is rotated at a specified speed, and the rolling wear test is performed for a specified time and a specified number of times; After completing the specified friction and wear, take a 50mm×50mm area in the center of the wear area and use a graphic analyzer to test it. Test one point every 10mm to detect the percentage of the remaining coating area. Then calculate the average value to determine the average percentage of the remaining coating area as the final test result.

10. The method for detecting friction and wear properties of a wear-resistant coating according to claim 9, characterized in that: The roughness of the adhesive sandpaper is 60 mesh to 2000 mesh.

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