CN112798454A - System and method for testing high-temperature friction and wear of metal sheet - Google Patents
System and method for testing high-temperature friction and wear of metal sheet Download PDFInfo
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- CN112798454A CN112798454A CN202110195291.4A CN202110195291A CN112798454A CN 112798454 A CN112798454 A CN 112798454A CN 202110195291 A CN202110195291 A CN 202110195291A CN 112798454 A CN112798454 A CN 112798454A
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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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- 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
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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
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
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- G01N2203/0226—High temperature; Heating means
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Abstract
The invention provides a system for testing high-temperature friction and wear of a metal sheet, which is characterized in that: the device comprises a rack assembly, a clamp assembly, a heating assembly, a stretching device and a force sensor; the stretching device is arranged at the bottom end of the metal sheet, the clamping assembly is arranged at the top of the metal sheet, the middle of the metal sheet is arranged in the heating assembly, and the heating assembly is arranged in the rack assembly. The clamp assembly comprises a first clamping component and a second clamping component; the first clamping component clamps the top end of the metal sheet and is arranged above the base, and the second clamping component clamps the metal sheet and is arranged in a groove formed in the base; the second clamping component consists of a first clamping block and a second clamping block, a force sensor is arranged on the outer wall of one side of the base, a driving component is installed on the outer wall of the other side of the base, and the driving component drives the second clamping block to clamp towards the direction of the metal sheet.
Description
The technical field is as follows:
the invention relates to the technical field of testing machines and precision instruments, in particular to a device for testing friction and wear behaviors of a metal sheet under a hot forming condition.
Background art:
at present, the application of boron steel in the field of automobile industry is mature day by day, and the application of light alloy in aerospace and automobile lightweight is more and more extensive.
It is noted that these widely used metal materials have poor plasticity at room temperature, and the conventional cold forming method cannot meet the process requirements for producing complex parts.
Therefore, by utilizing the improvement of metal plasticity under the high-temperature condition, many researchers research the technological technologies such as boron steel hot stamping, aluminum alloy cold die hot forming, titanium alloy hot stamping and the like, and control on the shape and the performance of the part is realized.
The hot stamping process routes of different metal sheet materials have similarities, namely, the metal sheet is heated to a higher temperature and is kept warm for a period of time, then the metal sheet is rapidly transferred to the interior of a cold die at room temperature, is rapidly stamped and formed, is kept in the die for a period of time to achieve the purpose of in-die quenching, and then required parts are obtained through procedures of trimming, surface treatment and the like.
In order to accurately describe the forming process of the sheet material contacting with the cold die under the high temperature condition, the friction and wear behaviors of different metal sheet materials under different temperatures, contact pressures and surface states need to be accurately described, however, the traditional friction test method cannot accurately control the temperature path and cannot reflect the actual friction and wear behaviors of the materials under the high temperature and variable pressure conditions in the hot stamping process. The frictional wear test of high temperature strips under hot stamping conditions generally requires the development of specialized test equipment that is expensive but not reliable.
Therefore, how to develop a set of low-cost and high-precision friction and wear behavior testing device for hot-forming high-temperature strips on a mature high-temperature tensile testing machine is an important problem in the field of hot stamping forming.
The developed device has the characteristics of simple and flexible structure form, high efficiency and low cost for testing the friction behaviors at different temperatures, different contact pressures and different surface states.
The invention content is as follows:
in order to overcome the defects in the prior art, the invention designs a metal sheet high-temperature friction and wear testing system, which comprises a rack assembly, a clamping assembly, a heating assembly, a stretching device and a force sensor, wherein the rack assembly is arranged on the rack assembly; the stretching device is arranged at the bottom end of the metal sheet, the clamping assembly is arranged at the top of the metal sheet, the middle of the metal sheet is arranged in the heating assembly, and the heating assembly is arranged in the rack assembly.
In one embodiment, a clamp assembly includes a first clamp member, a second clamp member; the first clamping component clamps the top end of the metal sheet and is arranged above the base, and the second clamping component clamps the metal sheet and is arranged in a groove formed in the base; the second clamping component consists of a first clamping block and a second clamping block, a force sensor is arranged on the outer wall of one side of the base, a driving component is installed on the outer wall of the other side of the base, and the driving component drives the second clamping block to clamp towards the direction of the metal sheet.
In one embodiment, the drive assembly includes a cylinder and a hydraulic station; wherein, the hydro-cylinder passes through the pipeline and is connected to the hydraulic pressure station.
In one embodiment, the rack assembly comprises four support rods and two support plates, wherein the two support plates are respectively arranged at two ends of the four support rods which are arranged in parallel in the vertical direction in the horizontal direction.
In one embodiment, the ejector rod of the force sensor penetrates through the oil cylinder to fixedly connect the second clamping block, the metal sheet is clamped by the second clamping block, and the contact pressure is read through the force sensor.
In one embodiment, the force sensor is located at the bottom of the stretching device and can measure the force acting on the metal sheet in real time.
In one embodiment, the heating assembly is a resistance furnace.
In one embodiment, the drawing speed of the drawing device is between 2.5mm/s and 25mm/s, the heating assembly can control the heating temperature to be between 25 and 950 ℃, and the driving pressure of the hydraulic station is between 8 and 10 MPa.
A test method of a metal sheet high-temperature friction and wear test system is characterized by comprising the following steps:
s1: clamp mounting
Fixedly connecting the rack assembly to a stretching device, clamping a sample in a clamping part of the stretching device, placing the sample in a resistance heating furnace, heating to a target temperature, waiting for the temperature to be stable, and resetting the numerical value of a force sensor in the stretching device;
s2: contact surface treatment
Aiming at different metal sheets and test conditions, the surface of the clamp block is coated with media such as high-temperature oil, lubricating grease, graphite and the like, so that the purpose of changing the surface state is achieved;
s3: contact pressure control
Controlling the ejector rod and the clamping component to clamp the sample through the hydraulic station, reading a pressure value by using a force sensor, and calculating the contact pressure;
s4: sliding friction wear test
Starting a stretching unit in the stretching device, and enabling the sample to be tested to move upwards at a constant speed by adopting displacement control to pass through a hydraulic clamp;
meanwhile, reading the data of a force sensor in the stretching device to obtain a real-time sliding friction value; repeating the experiment for multiple times under the same condition, recording the total sliding distance, observing the surface wear degree of the clamp block, and testing the high-temperature wear condition;
s5: data processing
The sliding friction force values under different working conditions are obtained by controlling the heating temperature, the hydraulic contact pressure and the surface state of the clamp block, and the friction coefficient of the corresponding condition is calculated.
The invention has the main beneficial effects that:
firstly, the device has a simple and compact structure, integrates a transverse hydraulic control module on a high-temperature tensile testing machine, realizes the test of the friction and wear behavior of the metal sheet under a complex process path, is convenient for clamping a sample, is reliable in test temperature data and friction force, and improves the test efficiency.
Secondly, the invention can be used for testing the friction coefficient of the hot forming process of different metal materials, realizes the test requirements of the process routes of different metal materials by changing the heating temperature and the contact pressure, and expands the application range of the experimental device.
Thirdly, the invention can carry out coating or oiling treatment on the surface of the hydraulically controlled clamp block according to the actual thermal forming process conditions, thereby realizing the friction force test under different surface states.
Fourthly, the method can be used for testing the high-temperature abrasion behaviors of different metal materials and the surface of the die in a high-temperature state, and the abrasion degree of the surface of the clamp block is observed by recording the total sliding distance of the high-temperature lath on the surface of the die, so that the abrasion behavior of the surface of the die in the actual hot stamping process is simulated.
In conclusion, the invention can reproduce the high-temperature friction and wear behavior of the metal sheet under a complex temperature path in the hot forming process, can realize the accurate measurement and control of the temperature and the contact pressure of the test area, and provides technical support for the material high-temperature friction and wear behavior test of the metal thin-wall component in the hot forming process in the fields of aerospace, automobile manufacturing and the like.
Description of the drawings:
the above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals refer to like features throughout. Wherein:
FIG. 1 is a front view of an embodiment of the present invention, illustrating an overall structure of a high temperature friction and wear test system for thin metal plates;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic diagram of a hydraulic station in a high temperature friction and wear test system for a metal sheet according to an embodiment of the present invention;
FIG. 4a is a schematic diagram of an overall structure of a high temperature friction and wear test system for a metal sheet according to an embodiment of the present invention;
FIG. 4b discloses an enlarged view of a portion of the structure of FIG. 1;
FIG. 5 is a flow chart of a method for testing high temperature friction and wear of a metal sheet according to an embodiment of the present invention.
The specific implementation mode is as follows:
the present invention will be described in detail with reference to specific examples. The following examples will help those skilled in the art to further understand the present invention, but are not limited thereto, and all modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention. It should be noted that the relationships depicted in the figures are for illustrative purposes only and are not to be construed as limiting the patent.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
Referring to fig. 1 in conjunction with fig. 2 to 5, in one embodiment, a sheet metal high temperature friction wear test system includes a frame assembly, a clamping assembly, a heating assembly 3, a stretching device, and a force sensor 5; wherein, stretching device installs in the sheet metal bottom, and the centre gripping subassembly is installed at the sheet metal top, and the middle part of sheet metal is installed in heating element 3, and heating element 3 establishes among the frame subassembly.
Preferably, the clamp assembly comprises a first clamp member 21, a second clamp member 22; wherein the content of the first and second substances,
the first clamping component 21 is clamped at the top end of the metal sheet 6 and above the base 23, and the second clamping component clamps the metal sheet 6 and is arranged in a groove formed in the base 23; the second clamping member is composed of a first clamping block 221 and a second clamping block 222, a force sensor 5 is arranged on the outer wall of one side of the base 23, a driving assembly is arranged on the outer wall of the other side of the base 23, and the driving assembly drives the second clamping block 222 to clamp towards the direction of the metal sheet 6.
Preferably, the drive assembly comprises a cylinder 24 and a hydraulic station 25; in which the cylinders 24 are connected to a hydraulic station 25 via lines 26.
Preferably, the rack assembly includes four support rods 11 and support plates 12, and the two support plates 12 are respectively installed at both ends of the four sets of support rods 11 arranged in parallel in the vertical direction in the horizontal direction.
Preferably, the top rod of the force sensor penetrates through the oil cylinder to fixedly connect the second clamping block (not labeled in the figure), the metal sheet 6 is clamped by the second clamping block 222, and the contact pressure is read 5 through the force sensor.
Preferably, the force sensor 5 is located at the bottom of the stretching device (not shown) and can measure the force acting on the metal sheet 6 in real time.
Preferably, the heating assembly 3 is a resistance heating furnace.
Preferably, the drawing speed of the drawing device is between 2.5mm/s and 25mm/s, the heating assembly 3 can control the heating temperature to be between 25 and 950 ℃, and the driving pressure of the hydraulic station 25 is between 8 and 10 MPa.
A test method of a metal sheet high-temperature friction and wear test system comprises the following steps:
s1: clamp mounting
Fixedly connecting the rack assembly to a stretching device, clamping a sample in a clamping part of the stretching device, placing the sample in a resistance heating furnace, heating to a target temperature, waiting for the temperature to be stable, and resetting the numerical value of a force sensor in the stretching device;
s2: contact surface treatment
Aiming at different metal laths and test conditions, the surface of the fixture block is coated with media such as high-temperature oil, lubricating grease, graphite and the like, so that the purpose of changing the surface state is achieved;
s3: contact pressure control
Controlling the ejector rod and the clamping component to clamp the sample through the hydraulic station, reading a pressure value by using a force sensor, and calculating the contact pressure;
s4: sliding friction wear test
Starting a stretching unit in the stretching device, and enabling the sample to be tested to move upwards at a constant speed by adopting displacement control to pass through a hydraulic clamp;
meanwhile, reading the data of a force sensor in the stretching device to obtain a real-time sliding friction value; repeating the experiment for multiple times under the same condition, recording the total sliding distance, observing the surface wear degree of the clamp block, and testing the high-temperature wear condition;
s5: data processing
The sliding friction force values under different working conditions are obtained by controlling the heating temperature, the hydraulic contact pressure and the surface state of the clamp assembly, and the friction coefficient of the corresponding condition is calculated.
It will also be appreciated that it is possible to,
the rack assembly comprises a connector 13, a support plate 12 and a support rod 11; wherein, connector 13 can concretize with stretching device through extension bar 81, and backup pad 12 concreties through bolt and connector 13, and it is fixed through nut 14 after two backup pads 2 about the bracing piece 3 vertically runs through, guarantees the axiality of backup pad and bottom suspension fagging, and the error is less than 0.2 mm.
The clamp assembly can adopt a butt-clamping mode, the driving pressure range of the hydraulic station can be 8-10MPa, a mandril of the force sensor 5 penetrates through the oil cylinder 24 and is fixedly connected to the second clamping block 222, the second clamping block 222 clamps the sample 6 to be tested, and the contact pressure is read through the force sensor 5. The oil cylinder in this embodiment may be a thin oil cylinder. The metal sheet may be in the form of a metal strip.
The present invention will be further described with reference to the following examples.
The first embodiment is as follows:
in this embodiment, a boron steel is taken as an example, and a simulation test is performed on the test system provided above, including fixture assembly installation, contact pressure control, sliding friction and wear test and data processing, and specifically including the following steps:
step S1: clamp and sample mounting
The frame assembly is fixed on a stretching device through a connecting head, and the size of the frame assembly is 20 x 600mm2Clamping a boron steel sample with the thickness of 1.4mm in a clamping part of a stretching device, placing a resistance heating furnace between a supporting plate and a supporting rod, heating the sample to 900 ℃ in the resistance heating furnace, keeping the temperature for 5min after the temperature is stabilized,completely austenitizing the boron steel material, and clearing the value of a force sensor in the high-temperature stretching device;
step S2: contact surface treatment
The surface of the boron steel plate strip is generally plated with an AlSi or Zn coating, the boron steel plate strip without the coating can generate oxide skin at a high temperature, and the surface of the clamp block needs to be properly polished and cleaned;
step S3: contact pressure control
Clamping the upper end of a boron steel sample by a hydraulic station through a single-side driving clamp body ejector rod and a second clamping block of a thin oil cylinder, reading a pressure value by using a force sensor, and adjusting the contact pressure to be 1MPa, 10MPa, 20MPa and the like;
step S4: sliding friction wear test
Starting a stretching unit in the high-temperature stretching device, and enabling the sample to be tested to move upwards at a constant speed of 25mm/s through a hydraulic clamp by adopting displacement control; meanwhile, reading data of a force sensor in the high-temperature stretching device, and recording the magnitude of sliding friction force after the data of the force sensor is required to be observed to be stable due to the fact that the temperature of the plate in the length direction is not uniform and the temperature of the upper part is low, so that a real-time sliding friction force value is obtained; repeating the experiment for multiple times under the same condition, recording the total sliding distance, observing the surface wear degree of the clamp block, and testing the high-temperature wear behavior;
step S5: data processing
The sliding friction force values under different working conditions are obtained by controlling the heating temperature, the hydraulic contact pressure and the surface state of the clamp block, and the friction coefficient of the corresponding condition is calculated.
Example two:
in this embodiment, an aluminum alloy is taken as an example, and a simulation test is performed on the test system provided above, including fixture assembly installation, contact pressure control, sliding friction and wear test and data processing, and specifically including the following steps:
step S1: clamp and sample mounting
Fixing the frame assembly to a high-temperature stretching device through a connector, and enabling the size of the frame assembly to be 20 x 600mm2Aluminum alloy specimens having a thickness of 2.0mm were placed in a holding part of a high-temperature stretching apparatusClamping, namely placing a resistance heating furnace between a supporting plate and a supporting rod, heating the sample in the resistance heating furnace to 475 ℃, keeping the temperature for 10min after the temperature is stabilized, enabling the internal organization state of the aluminum alloy material to be uniform, and resetting the numerical value of a force sensor in the high-temperature stretching device;
step S2: contact surface treatment
Changing the surface state of the clamp assembly, wherein the surface state is the conditions of whether lubricating grease is smeared or not, different lubricating greases are smeared, the thicknesses of different lubricants are different and the like;
step S3: contact pressure control
Clamping the upper end of an aluminum alloy sample by a hydraulic station through a thin oil cylinder single-side driving clamp body ejector rod and a second clamping block, reading a pressure value by using a force sensor, and adjusting the contact pressure to be 1MPa, 10MPa, 20MPa and the like;
step S4: sliding friction wear test
Starting a stretching unit in the stretching device, and enabling the sample to be tested to move upwards through a hydraulic clamp at a constant speed of 25mm/s by adopting displacement control; meanwhile, reading data of a force sensor in the high-temperature stretching device, and recording the magnitude of sliding friction force after the data of the force sensor is required to be observed to be stable due to the fact that the temperature of the plate in the length direction is not uniform and the temperature of the upper part is low, so that a real-time sliding friction force value is obtained; repeating the experiment for multiple times under the same condition, recording the total sliding distance, observing the surface wear degree of the clamp block, and testing the high-temperature wear behavior;
step S5: data processing
The sliding friction force values under different working conditions are obtained by controlling the heating temperature, the hydraulic contact pressure and the surface state of the clamp block, and the friction coefficient of the corresponding condition is calculated.
Example three:
in this embodiment, a titanium alloy is taken as an example, and a simulation test is performed on the test system, which includes fixture installation, contact pressure control, sliding friction and wear test and data processing, and specifically includes the following steps:
step S1: clamp and sample mounting
Fixedly connecting the frame assembly to a high temperature through a connectorOn a stretching device, the size is 20 x 600mm2Clamping a titanium alloy sample with the thickness of 1.6mm in a clamping part of a high-temperature stretching device, placing a resistance heating furnace between a supporting plate and a supporting rod, heating the sample to 950 ℃ in the resistance heating furnace, keeping the temperature for 5min after the temperature is stabilized, simulating the heat preservation process of a titanium alloy hot stamping process, and resetting the value of a force sensor in the high-temperature stretching device;
step S2: contact surface treatment
Changing the surface state of the clamp block, such as whether graphite is smeared as a lubricating medium or not;
step S3: contact pressure control
Clamping the upper end of a titanium alloy sample by a hydraulic station through a single-side driving clamp body ejector rod and a second clamping block of a thin oil cylinder, reading a pressure value by using a force sensor, and adjusting the contact pressure to be 1MPa, 10MPa, 20MPa and the like;
step S4: sliding friction wear test
Starting a stretching device, and enabling the sample to be tested to move upwards through a hydraulic clamp at a constant speed of 25mm/s by adopting displacement control; meanwhile, reading data of a force sensor in the stretching device, and recording the magnitude of sliding friction force after the data of the force sensor is required to be observed to be stable due to the fact that the temperature of the plate in the length direction is not uniform and the temperature of the upper part is low, so that a real-time sliding friction force value is obtained; repeating the experiment for multiple times under the same condition, recording the total sliding distance, observing the surface wear degree of the clamp assembly, and testing the high-temperature wear behavior;
step S5: data processing
The sliding friction force values under different working conditions are obtained by controlling the heating temperature, the hydraulic contact pressure and the surface state of the clamp block, and the friction coefficient of the corresponding condition is calculated.
It should be noted that the prior art in the protection scope of the present invention is not limited to the examples given in the present application, and all the prior art which is not inconsistent with the technical scheme of the present invention, including but not limited to the prior patent documents, the prior publications and the like, can be included in the protection scope of the present invention. In addition, the combination of the features in the present application is not limited to the combination described in the claims of the present application or the combination described in the embodiments, and all the features described in the present application may be freely combined or combined in any manner unless contradictory to each other. It should also be noted that the above-mentioned embodiments are only specific embodiments of the present invention. It is apparent that the present invention is not limited to the above embodiments and similar changes or modifications can be easily made by those skilled in the art from the disclosure of the present invention and shall fall within the scope of the present invention.
Claims (9)
1. The utility model provides a test system of sheet metal high temperature friction wear which characterized in that: the device comprises a rack assembly, a clamp assembly, a heating assembly, a stretching device and a force sensor; wherein the content of the first and second substances,
the stretching device is installed in the sheet metal bottom, and the centre gripping subassembly is installed at the sheet metal top, and the middle part of sheet metal is installed in heating element, and heating element establishes among the frame subassembly.
2. The test system of claim 1, wherein: the clamp assembly comprises a first clamping component and a second clamping component; wherein the content of the first and second substances,
the first clamping component clamps the top end of the metal sheet and is arranged above the base, and the second clamping component clamps the metal sheet and is arranged in a groove formed in the base;
the second clamping component consists of a first clamping block and a second clamping block, a force sensor is arranged on the outer wall of one side of the base, a driving component is installed on the outer wall of the other side of the base, and the driving component drives the second clamping block to clamp towards the direction of the metal sheet.
3. The test system of claim 2, wherein: the driving assembly comprises an oil cylinder and a hydraulic station; wherein, the hydro-cylinder passes through the pipeline and is connected to the hydraulic pressure station.
4. The test system of claim 3, wherein: the rack assembly comprises four support rods and support plates, and the two support plates are respectively arranged at two ends of the four support rods which are arranged in parallel in the vertical direction in the horizontal direction.
5. The test system of claim 4, wherein: and an ejector rod of the force sensor penetrates through the oil cylinder to be fixedly connected with the second clamping block, the second clamping block clamps the metal sheet, and the contact pressure is read through the force sensor.
6. The test system of claim 1, wherein: the force sensor is arranged at the bottom of the stretching device and can measure the force acting on the metal sheet in real time.
7. The test system according to any one of claims 1-6, wherein: the heating component is a resistance heating furnace.
8. The test system of claim 7, wherein: the drawing speed of the drawing device is between 2.5mm/s and 25mm/s, the heating temperature of the heating component can be controlled to be between 25 and 950 ℃, and the driving pressure of the hydraulic station is 8 to 10 MPa.
9. A test method of a metal sheet high-temperature friction and wear test system is characterized by comprising the following steps:
s1: clamp mounting
Fixedly connecting the rack assembly to a stretching device, clamping a sample in a clamping part of the stretching device, placing the sample in a resistance heating furnace, heating to a target temperature, waiting for the temperature to be stable, and resetting the numerical value of a force sensor in the stretching device;
s2: contact surface treatment
Aiming at different metal sheets and test conditions, the surface of the clamp block is coated with media such as high-temperature oil, lubricating grease, graphite and the like, so that the purpose of changing the surface state is achieved;
s3: contact pressure control
Controlling the ejector rod and the clamping component to clamp the sample through the hydraulic station, reading a pressure value by using a force sensor, and calculating the contact pressure;
s4: sliding friction wear test
Starting a stretching unit in the stretching device, and enabling the sample to be tested to move upwards at a constant speed by adopting displacement control to pass through a hydraulic clamp;
meanwhile, reading the data of a force sensor in the stretching device to obtain a real-time sliding friction value;
repeating the experiment for multiple times under the same condition, recording the total sliding distance, observing the surface wear degree of the clamp block, and testing the high-temperature wear condition;
s5: data processing
The sliding friction force values under different working conditions are obtained by controlling the heating temperature, the hydraulic contact pressure and the surface state of the clamp block, and the friction coefficient of the corresponding condition is calculated.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114563296A (en) * | 2022-03-09 | 2022-05-31 | 江苏智仁景行新材料研究院有限公司 | Detection equipment and method for simulating metal wear resistance |
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| CN211426225U (en) * | 2019-12-16 | 2020-09-04 | 济南兰光机电技术有限公司 | Electronic tension tester with friction coefficient testing function |
| CN111855435A (en) * | 2020-08-10 | 2020-10-30 | 上海交通大学 | Aluminum alloy sheet testing system and method |
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| CN114563296A (en) * | 2022-03-09 | 2022-05-31 | 江苏智仁景行新材料研究院有限公司 | Detection equipment and method for simulating metal wear resistance |
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Application publication date: 20210514 |