CN108593477B - Device and method for evaluating material abrasion behavior based on multiple working conditions of friction wheel set - Google Patents
Device and method for evaluating material abrasion behavior based on multiple working conditions of friction wheel set Download PDFInfo
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- CN108593477B CN108593477B CN201810665255.8A CN201810665255A CN108593477B CN 108593477 B CN108593477 B CN 108593477B CN 201810665255 A CN201810665255 A CN 201810665255A CN 108593477 B CN108593477 B CN 108593477B
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- 238000005299 abrasion Methods 0.000 title claims abstract description 68
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- 238000005461 lubrication Methods 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 9
- 238000011156 evaluation Methods 0.000 claims abstract description 7
- 230000001050 lubricating effect Effects 0.000 claims abstract description 5
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- 229910052742 iron Inorganic materials 0.000 description 3
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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Abstract
The invention discloses a device and a method for evaluating material abrasion behavior based on various working conditions of a friction wheel set. The device comprises: the friction pair comprises a sample wheel and a counter grinding wheel, wherein a material to be evaluated is fixed on the sample wheel, a counter grinding material is fixed on the counter grinding wheel, and the sample wheel and the counter grinding wheel are matched through friction action between the material to be evaluated and the counter grinding material; a load mechanism for applying different loads to at least the friction pair; the lubrication mechanism is at least used for adjusting the lubrication abrasion condition of the friction pair contact area; and a driving mechanism at least for independently driving the sample wheel and the grinding wheel pair respectively. The device for evaluating the abrasion behavior of the material based on the multiple working conditions of the friction wheel set provided by the invention can more comprehensively simulate the evaluation of the abrasion performance under the multiple working conditions by changing the load and lubricating the abrasion material and solid and/or liquid, and has low cost and wide application prospect.
Description
Technical Field
The invention particularly relates to a device and a method for evaluating material abrasion behavior based on various working conditions of a friction wheel set, and belongs to the technical field of abrasion detection.
Background
The current wear performance evaluation for materials is mainly divided into two categories: laboratory studies and live running studies. The data obtained by live operation test is accurate and practical, but the common test has high cost and low efficiency. At present, laboratory researches are mainly based on laboratory abrasion testing machines, but the testing working conditions are single, objective conditions such as abrasion materials, environmental factors, running motion states and the like are complex and changeable when the material parts are used, the differences between abrasion resistance evaluation and service life prediction of the material parts and objective and real operation working conditions of the material parts are large, and meanwhile, the abrasion behaviors and abrasion mechanisms of the moving parts in the actual working states are difficult to evaluate truly.
Disclosure of Invention
The invention aims to provide a device and a method for evaluating material abrasion behavior based on various working conditions of a friction wheel set so as to overcome the defects of the prior art.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention comprises the following steps:
the embodiment of the invention provides a device for evaluating material abrasion behavior based on various working conditions of a friction wheel set, which comprises the following components:
the friction pair comprises a sample wheel and a counter grinding wheel, wherein a material to be evaluated is fixed on the sample wheel, a counter grinding material is fixed on the counter grinding wheel, and the sample wheel and the counter grinding wheel are matched through friction action between the material to be evaluated and the counter grinding material;
a load mechanism for applying different loads to at least the friction pair;
the lubrication mechanism is at least used for adjusting the lubrication abrasion condition of the friction pair contact area; and
and the driving mechanism is at least used for independently driving the sample wheel and the grinding wheel pair respectively.
The embodiment of the invention also provides a method for evaluating the abrasion behavior of the material based on various working conditions of the friction wheel set, which comprises the following steps:
providing the device for evaluating the abrasion behavior of the material based on various working conditions of the friction wheel set,
respectively fixing the material to be evaluated and the grinding material on a sample wheel and a grinding wheel; and
the sample wheel and the grinding wheel are respectively rotated at a certain rotating speed, and the motion states of the grinding wheel and the sample wheel are adjusted, so that quantitative evaluation of the abrasion behavior of the materials under different motion states is realized.
Compared with the prior art, the device for evaluating the abrasion behavior of the material based on the multiple working conditions of the friction wheel set is simple in structure, is beneficial to accurately evaluating the abrasion behavior and the abrasion mechanism of the moving part in multiple actual working conditions, can more comprehensively simulate the evaluation of the abrasion performance under the multiple working conditions by changing the load and lubricating the abrasion material and solid and/or liquid, is low in cost and has wide application prospects.
Drawings
FIG. 1 is a schematic diagram of an apparatus for evaluating material wear behavior based on various operating conditions of a friction wheel set in an exemplary embodiment of the present invention;
FIG. 2 is a graph showing the relationship between the Longitudinal Sliding and Rolling Ratio (LSRR) and the volumetric abrasion loss of rubber under the water lubrication condition in example 1 of the present invention;
FIG. 3a is a graph showing the surface morphology of the tread rubber after abrasion under the combined conditions of water lubrication and rolling in example 1, wherein the rolling ratio is 0.001 (rolling ratio is 76/38);
FIG. 3b is a graph showing the surface topography of the tread rubber after wear under the combined water lubrication and rolling conditions of example 1, with a rolling ratio of 0.274 (rolling ratio of 76/50);
FIG. 3c is a graph showing the surface topography of the tread rubber after wear under the combined water lubrication and rolling conditions of example 1, with a rolling ratio of 0.594 (rolling ratio 76/70);
FIG. 3d is a graph showing the surface morphology of the tread rubber after abrasion under the combined conditions of water lubrication and rolling in example 1, wherein the rolling ratio is 0.815 (the rolling ratio is 76/90);
reference numerals illustrate: 1-fixation clamp, 2-iron stand, 3-transfusion bag, 4-brush, 5-load bracket, 6-exchangeable grinding wheel, 7-grinding wheel driving motor, 8-weight, 9-weight tray, 10-grinding wheel driving motor speed regulator, 11-plastic hose, 12-solid lubrication regulating valve, 13-material conveying funnel, 14-material conveying pipe, 15-electronic counter, 16-pressure fine tuning block, 17-liquid flow speed regulator, 18-sample wheel, 19-material collecting device, 20-material discharging valve, 21-material discharging port, 22-sample wheel driving motor and 23-sample wheel driving motor speed regulator.
Detailed Description
In view of the shortcomings in the prior art, the inventor of the present invention has long studied and practiced in a large number of ways to propose the technical scheme of the present invention. The technical scheme, the implementation process, the principle and the like are further explained as follows.
The embodiment of the invention provides a device for evaluating material abrasion behavior based on various working conditions of a friction wheel set, which comprises the following components:
the friction pair comprises a sample wheel and a counter grinding wheel, wherein a material to be evaluated is fixed on the sample wheel, a counter grinding material is fixed on the counter grinding wheel, and the sample wheel and the counter grinding wheel are matched through friction action between the material to be evaluated and the counter grinding material;
a load mechanism for applying different loads to at least the friction pair;
the lubrication mechanism is at least used for adjusting the lubrication abrasion condition of the friction pair contact area; and
and the driving mechanism is at least used for independently driving the sample wheel and the grinding wheel pair respectively.
Further, the diameters of the sample wheel and the counter-grinding wheel are the same or different, and the wheel axle of the sample wheel is parallel to the wheel axle of the counter-grinding wheel.
Preferably, the wheel axle of the sample wheel and the wheel axle of the counter-grinding wheel are both arranged horizontally.
Further, the driving mechanism comprises a first driving mechanism and a second driving mechanism, the sample wheel is independently driven by the first driving mechanism, and the pair of grinding wheels is independently driven by the second driving mechanism.
Preferably, the apparatus further comprises a speed regulating mechanism for regulating at least the rotational speed of the sample wheel and/or the counter-grinding wheel.
Preferably, the first driving mechanism and the second driving mechanism each comprise a motor; the speed regulating mechanism comprises a motor speed regulator matched with the motor.
Further, the load mechanism comprises a load bracket arranged on the opposite grinding wheel and a counterweight matched with the load bracket.
Preferably; the counterweight comprises a weight tray capable of containing weights of different specifications.
Preferably, the weight tray is in transmission connection with the load bracket.
Preferably, the weight tray is connected with the load bracket through at least one rope and at least one fixed pulley.
Preferably, the load mechanism further comprises a load adjuster coupled to the pair of grinding wheels, the load adjuster comprising a pressure trimming block.
Further, the lubrication mechanism comprises at least one material storage mechanism and a material conveying pipeline communicated with the material storage mechanism, and a liquid outlet of the material conveying pipeline is arranged corresponding to a friction interface of the friction pair.
Preferably, the material conveying pipeline is also provided with a material conveying speed regulator.
Further, the device for evaluating the abrasion behavior of the material based on various working conditions of the friction wheel set further comprises a speed measuring mechanism, wherein the speed measuring mechanism is at least used for measuring the rotating speed of the pair of grinding wheels.
Preferably, the speed measuring mechanism comprises an electronic counter for measuring the number of turns of the pair of grinding wheels.
Further, the device for evaluating the abrasion behavior of the material based on various working conditions of the friction wheel set further comprises an aggregation mechanism at least used for collecting the abrasive dust and/or waste liquid discharged from the friction wheel set.
Furthermore, the device for evaluating the abrasion behavior of the material based on the multiple working conditions of the friction wheel set further comprises a frame, and the friction wheel set, the load mechanism, the lubricating mechanism and the driving mechanism are all arranged on the frame.
The embodiment of the invention also provides a method for evaluating the abrasion behavior of the material based on various working conditions of the friction wheel set, which comprises the following steps:
providing the device for evaluating the abrasion behavior of the material based on various working conditions of the friction wheel set,
respectively fixing the material to be evaluated and the grinding material on a sample wheel and a grinding wheel; and
the sample wheel and the grinding wheel are respectively rotated at a certain rotating speed, and the motion states of the grinding wheel and the sample wheel are adjusted, so that quantitative evaluation of the abrasion behavior of the materials under different motion states is realized.
Further, the method for evaluating the abrasion behavior of the material based on various working conditions of the friction wheel set further comprises the following steps: the lubrication mechanism selectively adds or does not add the lubrication material in the contact area of the friction pair before or during the rotation of the sample wheel and the grinding wheel, so as to realize the change of the lubrication abrasion condition.
Further, the method also comprises loading the friction pair at different times through a loading mechanism.
Preferably, the method further comprises: the rotation speeds of the grinding wheel and the sample wheel are respectively regulated by a driving mechanism.
Preferably, the method specifically comprises the following steps: the rotation speed of the sample wheel and the grinding wheel is regulated and controlled by the motor speed regulator, so that the assessment of the material abrasion behavior under the conditions of pure sliding, pure rolling and rolling movement containing sliding is realized.
Preferably, the method further comprises: and collecting the abrasive dust and/or waste liquid output by the friction pair in the friction process, cleaning the sample wheel, grinding the abrasive dust on the grinding wheel, and carrying out subsequent analysis and evaluation on the abrasive dust and the grinding marks on the surface of the material to be evaluated.
The technical scheme, the implementation process and the principle thereof are further explained with reference to the attached drawings.
Referring to fig. 1, in some more specific embodiments, an apparatus for evaluating dry and wet abrasion behavior of a material based on a quantified rolling-sliding ratio may include a test stand, on which a friction pair is fixed, the friction pair including a sample wheel 18 and a counter-grinding wheel 6 having the same or different diameters, the sample wheel 18 being fixed with a material to be evaluated (the material to be evaluated may be a coating material, a sealing and tire rubber material, etc.), the counter-grinding wheel 6 being fixed with a counter-grinding material (the counter-grinding material may be a steel material, a ceramic or a material simulating a road surface, etc.), the sample wheel and the counter-grinding wheel being engaged by friction between the material to be evaluated and the counter-grinding material; the sample wheel 18 and the grinding wheel 6 are respectively and independently driven by a sample wheel driving motor 22 and a grinding wheel driving motor 7, the sample wheel driving motor 22 is connected with a sample wheel driving motor speed regulator 23, the grinding wheel driving motor 7 is connected with a grinding wheel driving motor speed regulator 10, and the rotation speeds of the sample wheel and the grinding wheel can be measured and regulated by regulating the sample wheel driving motor speed regulator 23 and the grinding wheel driving motor speed regulator 10 so as to respectively regulate the rotation speeds to the rotation speeds required by the test;
the load mechanism comprises a negative load bracket 5 arranged on the opposite grinding wheel, a pressure fine adjustment block 16 (used for correcting the pressure between friction pairs) and a weight tray 9 connected with the load bracket, wherein the weight tray 9 can be connected with the load bracket 5 through a soft steel wire and at least one fixed pulley, and weights 8 with different masses and numbers are placed in the weight tray 9 to apply weights with different masses on the load bracket, so that different loads are applied to the surface of a test material;
the lubrication mechanism comprises at least one infusion bag 3 (the infusion bag is mainly used for adding liquid lubrication materials, the infusion bag can be hung on an iron stand 2 fixed with a fixing clamp 1) and a plastic hose 11 communicated with the infusion bag, a liquid flow speed regulator 17 is further arranged on the plastic hose 11, a liquid outlet of the plastic hose 11 is arranged corresponding to a friction interface of a friction pair, and the lubrication and abrasion condition of a contact area of the friction pair is at least adjusted; the lubrication mechanism further comprises at least one material conveying funnel 13 (the material conveying funnel is mainly used for adding solid lubrication materials, the material conveying funnel can be hung on the iron stand 2 fixed with the fixing clamp 1) and a material conveying pipe 14 communicated with the material conveying funnel, the material conveying pipe 14 is further provided with a solid lubrication adjusting valve 12, and a material outlet of the material conveying pipe 14 is arranged corresponding to a friction interface of the friction pair and is at least used for adjusting lubrication abrasion conditions of a contact area of the friction pair;
the speed measuring mechanism comprises an electronic counter 15 for measuring the rotation number of the pair of grinding wheels, and the rotation speed of the grinding wheels is calculated through the number of turns recorded by the counter corresponding to the abrasion time;
the collecting mechanism comprises a collecting device 19, a discharging hole 21 and a discharging valve 20 matched with the discharging hole are arranged on the collecting device 19, wherein the collecting device 19 is arranged at the lower part of the friction interface of the friction pair and is used for collecting abrasive dust and/or waste liquid discharged from the friction pair; in addition, the collecting mechanism also comprises a brush 4 which can be contacted with the grinding material on the grinding wheel to separate the grinding dust generated by friction from the grinding wheel and fall into the collecting liquid collector.
In some more specific embodiments of the present invention, a method for assessing dry and wet abrasion behavior of a material based on a quantified slip ratio may specifically include the steps of:
(1) Coating or adhering the material to be evaluated and the grinding material to be matched on the sample wheel and the grinding wheel respectively;
(2) The sample wheel and the grinding wheel pair respectively set a certain rotating speed through a sample wheel motor speed regulator and independently rotate;
(3) The weights with different weights are placed in the weight tray, so that the weights with different weights are applied to the load bracket, and different loads are applied to the grinding wheel;
(4) Through a liquid flow speed regulator and/or a solid lubrication regulating valve, a lubrication mechanism selectively adds or does not add a lubrication material in a friction pair contact area to realize the transformation of lubrication abrasion, so that the quantitative evaluation of the material abrasion behavior under different motion states is realized;
(5) After friction for a certain time, the number of turns on an electronic counter is recorded, so that the rotating speed of the grinding wheel is obtained, and the motor speed regulator measures the rotating speed of the sample wheel;
(6) During the friction process, the scraps/waste liquid is collected through a scraps collecting and collecting device below the friction pair, the scraps on the two wheels are cleaned, and subsequent analysis and evaluation are carried out on the scraps and the grinding marks on the surface of the sample.
Example 1
The device and the method for evaluating the abrasion behavior of the material based on various working conditions of the friction wheel set provided by the embodiment of the invention aim at evaluating the abrasion performance of the tire tread rubber under the condition of different rotating speeds of water lubrication.
In this example, a grinding wheel was selected as a counter grinding wheel (diameter: 1500mm, thickness: 26.+ -. 0.2 mm) fixed on a drive shaft of an external motor, tread vulcanized rubber was spline (length: 250.+ -. 0.2mm, width: 12.7.+ -. 0.2mm, thickness: 3.2.+ -. 0.2 mm) adhered to a rubber wheel (diameter: 68mm, thickness: 12.7.+ -. 0.2mm, hardness: 70-80) with 502 glue, longitudinal Sliding and Rolling Ratio (LSRR) values corresponding to different rotational speeds were as shown in Table 1,
TABLE 1 LSRR values for different rotational speeds
Under water lubrication conditions, the water drop controller was 120 drops per minute. The dry friction and water existing all test processes are at room temperature of 20-25 ℃, the relative humidity of air is 10% -15%, the rotation speed of a driving shaft of a rubber wheel is constant at 76r/min, the working load is constant at 10N, and the test path is that a grinding wheel rotates 1500r; carrying out ultrasonic cleaning, room temperature drying and the like on a sample to be tested by absolute alcohol before testing; the mass of the sample before and after the test (wherein the sample is dried for 2 hours at room temperature after being worn under water lubrication) was accurately weighed by an analytical balance and counted as m 0 And m 1 The volumetric wear rate (W) was calculated according to the following formula s )：
ρ is the density of the tread band; meanwhile, each set of experiments was repeated three times.
Results and discussion:
referring to fig. 2, it can be seen from fig. 2 that the LSRR has less obvious influence on the volumetric abrasion loss of the rubber under the water lubrication condition, and the volumetric abrasion loss is completely opposite to the volumetric abrasion loss under the dry friction along with the change trend of the longitudinal slip ratio, and the volumetric abrasion loss of the rubber slowly decreases along with the increase of the longitudinal slip ratio, which indicates that the rubber abrasion behavior is changed under the water lubrication condition.
Referring to fig. 3 a-3 d, fig. 3a is a surface topography of the worn tread rubber under the combined working conditions of water lubrication and rolling in embodiment 1 of the present invention, wherein the rolling ratio is 0.001 (rolling ratio is 76/38); FIG. 3b is a graph showing the surface topography of the tread rubber after wear under the combined water lubrication and rolling conditions of example 1, with a rolling ratio of 0.274 (rolling ratio of 76/50); FIG. 3c is a graph showing the surface topography of the tread rubber after wear under the combined water lubrication and rolling conditions of example 1, with a rolling ratio of 0.594 (rolling ratio 76/70); FIG. 3d is a graph showing the surface topography of the tread band after abrasion under the combined water lubrication and rolling conditions of example 1, wherein the rolling ratio is 0.815 (rolling ratio is 76/90). It can be seen from fig. 3a that the wear surface has a large number of grooves defined parallel to the slip direction, and that in addition a slight swelling action takes place on the surface, there being a large number of surrounding raised fish-scale-like microprotrusions; research shows that the abrasion mechanism is the abrasion leading of abrasive particles at the moment; it can be seen from fig. 3b that the depth of the grooves of the wear surface becomes shallow and the number thereof becomes small, and the size and number of the abrasive dust become small, and the morphology also becomes a cluster from a sheet shape, which means that the wear mechanism is changed, and the wear mechanism is mainly abrasive particle wear dominant, with curling wear; it can be seen from fig. 3c that the wear surface has snowflake patterns and waves perpendicular to the erosion direction, and the research shows that the wear mechanism is mainly adhesive fatigue wear and associated erosion wear at this time; it can be seen from fig. 3d that the surface exhibits ridge-like wear marks perpendicular to the erosion direction and adhesive stretching parallel to the sliding direction, the appearance of the worn snow marks disappears, and the wear debris hardly disappears, and the study shows that the wear mechanism is mainly erosion fatigue wear with adhesive wear.
It should be understood that the above embodiments are merely for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and implement the same according to the present invention without limiting the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (13)
1. A device for evaluating material wear behavior based on multiple conditions of a friction wheel set, comprising:
the friction pair comprises a sample wheel and a counter grinding wheel, wherein a material to be evaluated is fixed on the sample wheel, a counter grinding material is fixed on the counter grinding wheel, and the sample wheel and the counter grinding wheel are matched through friction action between the material to be evaluated and the counter grinding material;
the load mechanism is at least used for applying different loads to the friction pair, the load mechanism comprises a load bracket arranged on the grinding wheel and a counterweight matched with the load bracket, the counterweight comprises a weight tray capable of containing weights with different specifications, the weight tray is in transmission connection with the load bracket, the weight tray is connected with the load bracket through at least one rope and at least one fixed pulley, the load mechanism further comprises a load corrector connected with the grinding wheel, and the load corrector comprises a pressure fine adjustment block;
the lubrication mechanism is at least used for adjusting the lubrication abrasion condition of the friction pair contact area, and comprises at least one material storage mechanism for storing liquid and a material conveying pipeline communicated with the material storage mechanism, a liquid outlet of the material conveying pipeline is arranged corresponding to the friction interface of the friction pair, and a material conveying speed regulator is further arranged on the material conveying pipeline; the lubrication mechanism further comprises at least one material conveying mechanism for adding solid lubrication materials and a material conveying pipe communicated with the material conveying mechanism, wherein a solid lubrication regulating valve is arranged on the material conveying pipe, and a material outlet of the material conveying pipe is arranged corresponding to a friction interface of the friction pair;
the driving mechanism is at least used for independently driving the sample wheel and the grinding wheel pair respectively;
the speed measuring mechanism is at least used for measuring the rotating speed of the pair of grinding wheels;
and the collecting mechanism is at least used for collecting the abrasive dust and/or waste liquid discharged from the friction pair.
2. The apparatus for evaluating material abrasion behavior based on multiple working conditions of a friction wheel set according to claim 1, wherein: the diameters of the sample wheel and the pair of grinding wheels are the same or different, and the wheel axle of the sample wheel is parallel to the wheel axle of the pair of grinding wheels.
3. The apparatus for evaluating material abrasion behavior based on multiple working conditions of a friction wheel set according to claim 2, wherein: the wheel shafts of the sample wheel and the pair of grinding wheels are horizontally arranged.
4. The apparatus for evaluating material abrasion behavior based on multiple working conditions of a friction wheel set according to claim 1, wherein: the driving mechanism comprises a first driving mechanism and a second driving mechanism, the sample wheel is independently driven by the first driving mechanism, and the pair of grinding wheels is independently driven by the second driving mechanism.
5. The apparatus for evaluating material abrasion behavior based on multiple operating conditions of a friction wheel set according to claim 4, wherein: the device further comprises a speed regulating mechanism at least for regulating the rotational speed of the sample wheel and/or the counter-grinding wheel.
6. The apparatus for evaluating material abrasion behavior based on multiple operating conditions of a friction wheel set according to claim 5, wherein: the first driving mechanism and the second driving mechanism both comprise motors, and the speed regulating mechanism comprises a motor speed regulator matched with the motors.
7. The apparatus for evaluating material abrasion behavior based on multiple conditions of a friction wheel set according to claim 1, wherein said speed measuring mechanism comprises an electronic counter for measuring the number of turns of said pair of grinding wheels.
8. The apparatus for evaluating material abrasion behavior based on multiple conditions of a friction wheel set according to claim 1, further comprising a frame on which the friction wheel set, the load mechanism, the lubrication mechanism, and the drive mechanism are mounted.
9. A method for evaluating material wear behavior based on multiple operating conditions of a friction wheel set, comprising:
providing a device for evaluating material abrasion behavior based on various conditions of a friction wheel set according to any one of claims 1 to 8,
respectively fixing the material to be evaluated and the grinding material on a sample wheel and a grinding wheel; and
the sample wheel and the grinding wheel are respectively rotated at a certain rotating speed, and the motion states of the grinding wheel and the sample wheel are adjusted, so that quantitative evaluation of the abrasion behavior of the materials under different motion states is realized.
10. The method of assessing material wear behavior based on multiple operating conditions of a friction wheel set of claim 9, further comprising: before or during the rotation of the sample wheel and the grinding wheel, the solid lubricating material is selectively added or not added in the friction pair contact area through a lubricating mechanism, so that the change of the lubrication abrasion condition is realized; and/or applying different loads to the friction pair by the load mechanism.
11. The method of assessing material wear behavior based on multiple operating conditions of a friction wheel set of claim 10, further comprising: the rotation speeds of the grinding wheel and the sample wheel are respectively regulated by a driving mechanism.
12. The method for evaluating material wear behavior based on multiple operating conditions of a friction wheel set according to claim 11, characterized in that it comprises in particular: the rotation speed of the sample wheel and the grinding wheel is regulated and controlled by the motor speed regulator, so that the assessment of the material abrasion behavior under the conditions of pure sliding, pure rolling and rolling movement containing sliding is realized.
13. The method of assessing material wear behavior based on multiple operating conditions of a friction wheel set of claim 12, further comprising: and collecting the abrasive dust and/or waste liquid output by the friction pair in the friction process, cleaning the sample wheel, grinding the abrasive dust on the grinding wheel, and carrying out subsequent analysis and evaluation on the abrasive dust and the grinding marks on the surface of the material to be evaluated.
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