CN111929188A - Friction wear testing machine for multi-sample synchronous wear resistance detection and detection method - Google Patents
Friction wear testing machine for multi-sample synchronous wear resistance detection and detection method Download PDFInfo
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- CN111929188A CN111929188A CN202010904774.2A CN202010904774A CN111929188A CN 111929188 A CN111929188 A CN 111929188A CN 202010904774 A CN202010904774 A CN 202010904774A CN 111929188 A CN111929188 A CN 111929188A
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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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Abstract
A friction wear testing machine and a detection method for multi-sample synchronous wear resistance detection belong to the technical field of material surface performance analysis and aim to solve the problems of complex structure, complex operation, higher cost of formed parts, higher cost of the testing machine and poor accuracy of work efficiency and wear resistance detection in the prior art. The testing machine of the present invention comprises: a support body; the friction unit is arranged at the upper end of the support body and at least comprises a rotating disc and a friction body which is detachably arranged on the rotating disc; and a plurality of groups of clamping units which are circumferentially and uniformly distributed on the supporting body, the clamping units clamp the sample to enable the sample to be in contact with the friction body of the friction unit, and the clamping units are used for adjusting the contact force between the sample and the friction body. The testing machine turntable is provided with four support frames, and can be detached randomly according to the number of samples, so that the working efficiency is greatly improved. And a water injection system is arranged, so that dry and wet friction tests can be carried out.
Description
Technical Field
The invention belongs to the technical field of material surface performance analysis, and particularly relates to a friction and wear testing machine and a detection method for multi-sample synchronous wear resistance detection.
Background
The new material is a material which is newly developed or is being developed and has more excellent performance than the traditional material, has very wide application in various industries, is used as a foundation and a pillar strategic industry, and is the foundation and the lead of modern high and new technology and industry. The material detection is an important aspect of the new material, and particularly, the wear resistance is an important index for embodying the surface performance of the new material. The laser cladding technology is also an excellent means for changing the surface performance of materials, and particularly, the laser cladding technology is characterized in that a selected coating material is placed on the surface of a coated substrate in different filling modes, the selected coating material and a thin layer on the surface of the substrate are simultaneously melted through laser irradiation, and a surface coating which is extremely low in dilution and is metallurgically combined with the substrate material is formed after the laser coating material is rapidly solidified, so that the surface wear resistance of the materials is greatly improved. The wear resistance of the surface of the material is improved no matter in the new material or in the laser cladding technology, so that development of an economical and reliable wear resistance detection testing machine is always paid extensive attention.
Most of the abrasion resistance detection testing machines developed on the market are complex in structure and complex in operation, and the formed parts are high in manufacturing cost and high in testing machine cost. But the working efficiency and the accuracy of the wear resistance detection cannot achieve good effects.
Disclosure of Invention
The invention aims to provide a friction wear testing machine and a friction wear testing method for multi-sample synchronous wear resistance detection, and solves the problems of complex structure, complex operation, higher manufacturing cost of formed parts, higher testing machine cost, and poor working efficiency and accuracy of wear resistance detection in the prior art.
In order to achieve the above object, the friction wear testing machine for multi-sample synchronous wear resistance detection according to the present invention comprises:
a support body;
the friction unit is arranged at the upper end of the support body and at least comprises a rotating disc and a friction body which is detachably arranged on the rotating disc;
and a plurality of groups of clamping units which are circumferentially and uniformly distributed on the supporting body, wherein the clamping units are used for clamping the sample to enable the sample to be in contact with a friction body of the friction unit, and the clamping units are used for adjusting the contact force between the sample and the friction body.
The testing machine further comprises a liquid supply unit through which wet friction liquid between the test sample and the friction body is supplied.
The liquid supply unit includes:
a liquid storage tank arranged inside the support body;
the water pump is arranged in the liquid storage tank;
and one end of the guide pipe is connected with the water pump, and the other end of the guide pipe extends to the friction surface of the sample and the friction body.
The support body includes:
a chassis;
the base plate is arranged at the lower end of the base; the liquid storage tank of the liquid supply unit is arranged in the cylindrical base;
and the table top is arranged at the other end of the base, and the friction unit and the clamping unit are arranged on the table top.
The friction unit further includes:
the motor is fixed on the lower surface of the table top of the support body, the turntable is arranged on the upper surface of the table top, and an output shaft of the motor is coaxially and fixedly connected with the turntable;
a stepping motor driver connected with the motor through a wire;
and the stepping motor driver is connected with the pulse controller through an electric wire.
The friction body is sand paper.
Each set of the clamping units includes:
the supporting frame is detachably connected with the table top of the supporting body;
the clamp is in sliding fit with the through hole in the support frame, and the moving direction of the clamp is vertical to the rotating disc of the friction unit;
the weight rod is in sliding fit with the through hole of the support frame, and one end of the weight rod is in contact with the holder;
and a plurality of weights.
The detection method of the friction wear testing machine based on the multi-sample synchronous wear resistance detection comprises the following steps:
the method comprises the following steps: confirming the friction time t according to the material and the friction radius of the sample;
step two: rubbing each sample on the same abrasive paper under different pressures, and recording the abrasion loss m of each sample under each pressure; the abrasion loss is the mass of the sample before and after the friction is measured by a balance, and the difference value obtained by subtracting is the abrasion loss m of the test;
step three: replacing different abrasive paper, and repeating the step two to realize the detection of the abrasion loss of each sample under different abrasive paper;
step four: calculating the wear resistance value K of the surface of the cladding layer of each sample according to a formula (I), wherein the higher the wear resistance value is, the worse the wear resistance is;
wherein:
m is the amount of wear of each specimen at each pressure;
v area of wear;
p is the pressure to which the wear is subjected;
and t is the abrasion time.
The friction time confirmation step is specifically as follows:
according to the material and the friction radius r of the sample, the total friction path L and the rotating angular speed omega of the turntable, the friction time t is calculated according to a formula (II):
and step two, rubbing each sample on the same abrasive paper under different pressures, and replacing the new abrasive paper with the same friction coefficient while changing the pressure of the sample.
The invention has the beneficial effects that:
1. economic and reliable, and simple operation.
All the components of the whole friction wear testing machine are common parts, so that the cost is low. The working method of the testing machine is used for detecting the wear resistance of the material sample, and the obtained result is reliable and accurate. And the use is simple, and basically, all tests can be completed only by operating the pulse control panel.
2. The multiple material samples can be synchronously detected, and the working efficiency is high.
The four support frames are fixed on the table board through threaded connection, and can be flexibly disassembled according to the number of samples detected by the wear resistance. The wear resistance of four material samples can be detected at most simultaneously, and the working efficiency is high.
3. The abrasion resistance test can be performed using various conditions.
Different types of abrasive paper are stuck on the rotary disc, so that the abrasion resistance of the test sample can be detected on different friction surfaces. And by adding weights with different weights to the weight rod, the sample can be under different pressures. The tester is also provided with a water injection system which can provide two friction modes of dry friction and wet friction.
4. Lubricating oil performance tests can be performed.
The holder only holds one material sample, different lubricating oil is respectively put into the liquid storage tank, and the wear resistance test result of the material sample under the condition of injecting different lubricating oil is collected, so that the better the wear resistance is, and the better the performance effect of the lubricating oil is.
Drawings
FIG. 1 is a schematic structural diagram of a frictional wear testing machine for multi-sample synchronous wear resistance detection according to the present invention;
FIG. 2 is a schematic view of the internal structure of the friction and wear testing machine for multi-sample synchronous wear resistance detection according to the present invention;
FIG. 3 is an exploded view of the structure of the frictional wear testing machine for multi-sample synchronous wear resistance detection according to the present invention;
wherein: 1. the device comprises a support body, 101, a chassis, 102, a base, 103, a table top, 2, a liquid supply unit, 201, a liquid storage tank, 202, a water pump, 203, a flow guide pipe, 3, a friction unit, 301, a rotary table, 302, sand paper, 303, a motor, 304, a stepping motor driver, 305, a pulse controller, 4, a clamping unit, 401, a support frame, 402, a clamp, 403, a weight rod, 404, a weight, 5 and a sample.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
Referring to fig. 1 to fig. 3, the friction wear testing machine for multi-sample synchronous wear resistance detection of the present invention comprises:
a support body 1;
the friction unit 3 is arranged at the upper end of the support body 1, and the friction unit 3 at least comprises a rotary disc 301 and a friction body detachably arranged on the rotary disc 301;
and a plurality of groups of clamping units 4 which are circumferentially and uniformly distributed on the supporting body 1, wherein the clamping units 4 are used for clamping the sample 5, so that the sample 5 is contacted with a friction body of the friction unit 3, and the clamping units 4 are used for adjusting the contact force between the sample 5 and the friction body.
The testing machine further comprises a liquid supply unit 2, through which liquid supply unit 2 wet friction liquid between the test specimen 5 and the friction body is supplied.
The liquid supply unit 2 includes:
a liquid storage tank 201 arranged inside the support body 1;
a water pump 202 disposed in the liquid storage tank 201;
and a guide pipe 203, one end of the guide pipe 203 is connected with the water pump 202, and the other end extends to the friction surface of the sample 5 and the friction body.
The support body 1 includes:
a chassis 101;
a cylindrical base 102, the base plate 101 being disposed at a lower end of the base 102; the liquid storage tank 201 of the liquid supply unit 2 is provided in the cylindrical base 102;
and a table top 103 disposed at the other end of the base 102, wherein the friction unit 3 and the clamping unit 4 are disposed on the table top 103.
The friction unit 3 further includes:
the motor 303 is fixed on the lower surface of the table top 103 of the support body 1, the turntable 301 is arranged on the upper surface of the table top 103, and an output shaft of the motor 303 is coaxially and fixedly connected with the turntable 301;
a stepping motor driver 304 connected to the motor 303 through an electric wire;
and a pulse controller 305, the stepping motor driver 304 being connected to the pulse controller 305 through an electric wire.
The friction body is sand paper 302, and the sand paper 302 is adhered to the rotary disc 301 through adhesive force.
Each set of the gripping units 4 includes:
a support frame 401 detachably connected to the top 103 of the support body 1;
a clamper 402 slidably fitted into the through hole of the holder 401, wherein the movement direction of the clamper 402 is perpendicular to the turntable 301 of the friction unit 3;
a weight rod 403 in sliding fit with the through hole of the support frame 401, wherein one end of the weight rod 403 is in contact with the holder 402;
and a plurality of weights 404.
The holder 401 of the present invention is fixed on the table top 103 by hexagon socket nuts, after the sample 5 is placed in the holder 402, the holder 402 is inserted into the holder 401, the weight rod 403 is inserted into the holder 402, and weights 404 of different numbers and weights are put on according to the test requirements, so that the sample 5 is pressed on the sandpaper 302. Sand paper 302 is stuck on the rotary table 301, and water injection is determined according to the requirements of dry friction and wet friction. The turntable 301 and the motor 303 are fixed together through a positioning screw, after the motor 303 is started, the motor 303 drives the turntable 301 to rotate for testing, and the rotating speed and the working time of the motor 303 can be controlled through a stepping motor driver 304 and a stepping servo motor pulse controller 305.
The multiple groups of clamping units 4 can select the number of the mounting supports 401 from 1 to 4 according to the number of the test samples 5, so that the test of the multiple samples 5 can be realized simultaneously, and the wear resistance detection efficiency of the samples 5 can be improved. The four holders 401 are screwed to the table top 103.
The detection method of the friction wear testing machine based on the multi-sample synchronous wear resistance detection comprises the following steps:
the method comprises the following steps: confirming the friction time t according to the material and the friction radius of the sample 5;
step two: rubbing each sample 5 on the same sandpaper 302 under different pressures, and recording the abrasion loss m of each sample 5 under each pressure; the abrasion loss is the mass of the sample before and after the friction is measured by a balance, and the difference value obtained by subtracting is the abrasion loss of the test;
step three: replacing different pieces of sandpaper 302, and repeating the step two to realize the detection of the abrasion loss of each test sample 5 under different pieces of sandpaper 302;
step four: calculating the wear resistance value K of the surface of the cladding layer of each sample 5 according to a formula (I), namely the wear loss (s \ g \ square meter) under unit time, unit area and unit pressure, wherein the higher the wear resistance value is, the worse the wear resistance is;
wherein:
m is the amount of wear of each specimen at each pressure;
v area of wear;
p is the pressure to which the wear is subjected;
and t is the abrasion time.
The friction time confirmation step is specifically as follows:
according to the material and the friction radius r of the sample 5, the total friction distance L and the rotation angular speed omega of the turntable 301, the friction time t is calculated according to the formula (II),
each of the samples 5 described in step two was rubbed against the same coated abrasive 302 at different pressures, and the pressure of the sample 5 was changed while replacing a new coated abrasive 302 having the same coefficient of friction.
The detection method comprises the following steps: according to the material and the friction radius of the sample 5, the proper total friction path and the rotation speed of the turntable 301 are set, and the friction time is calculated. An abrasion resistance test was performed on each material sample 5 by attaching 800-mesh sandpaper 302 to the turntable 301 and adding weights 404 of 0.2kg, 0.3kg, 0.4kg, 0.6kg and 0.75kg, respectively, and the amount of abrasion of the test performed after each addition of the weight 404 was recorded. Each time the weight 404 is added, a new piece of 800 grit sandpaper 302 needs to be applied. After the experiment of adhering 800-mesh sandpaper 302 is completed, 1000-mesh, 1200-mesh, 1500-mesh and 2000-mesh sandpaper 302 is adhered respectively according to the above experiment steps for the experiment, and abrasion data is recorded. And finally, calculating the wear resistance value of each material sample 5, namely the wear loss (s \ g \ square meter) under unit time, unit area and unit pressure, wherein the higher the wear resistance value is, the worse the wear resistance is.
Claims (10)
1. Friction wear testing machine that synchronous wearability of many samples detected, its characterized in that includes:
a support body (1);
the friction unit (3) is arranged at the upper end of the support body (1), and the friction unit (3) at least comprises a rotary disc (301) and a friction body detachably arranged on the rotary disc (301);
and a plurality of groups of clamping units (4) which are circumferentially and uniformly distributed on the support body (1), wherein the clamping units (4) are used for clamping the sample (5), so that the sample (5) is contacted with a friction body of the friction unit (3), and the clamping units (4) are used for adjusting the contact force between the sample (5) and the friction body.
2. The friction wear testing machine for multi-specimen synchronous wear resistance detection according to claim 1, characterized in that the testing machine further comprises a liquid supply unit (2), and wet friction liquid between the specimen (5) and the friction body is supplied through the liquid supply unit (2).
3. The friction wear testing machine for multi-specimen synchronous wear detection according to claim 2, characterized in that the liquid supply unit (2) comprises:
a liquid storage tank (201) arranged inside the support body (1);
a water pump (202) disposed in the liquid storage tank (201);
and one end of the guide pipe (203) is connected with the water pump (202), and the other end of the guide pipe (203) extends to the friction surface of the sample (5) and the friction body.
4. The friction wear tester for multi-specimen synchronous wear detection according to claim 2 or 3, characterized in that the support body (1) comprises:
a chassis (101);
a cylindrical base (102), wherein the chassis (101) is arranged at the lower end of the base (102); a liquid storage tank (201) of the liquid supply unit (2) is arranged in the cylindrical base (102);
and a table top (103) arranged at the other end of the base (102), wherein the friction unit (3) and the clamping unit (4) are arranged on the table top (103).
5. The friction wear tester for multi-specimen synchronous wear detection according to any one of claims 1 to 3, characterized in that the friction unit (3) further comprises:
the motor (303), the said motor (303) is fixed on the lower surface of mesa (103) of the said support body (1), the said rotary table (301) is set up on the upper surface of the said mesa (103), the output shaft of the said motor (303) and said rotary table (301) are coaxial and fixedly connected;
a stepping motor driver (304) connected to the motor (303) by an electric wire;
and a pulse controller (305), wherein the stepping motor driver (304) is connected with the pulse controller (305) through an electric wire.
6. The friction-abrasion tester for multi-specimen synchronous abrasion resistance detection according to claim 5, wherein the friction body is sandpaper (302).
7. The friction wear tester for multi-specimen synchronous wear detection according to any one of claims 1 to 3, characterized in that each set of the gripping units (4) comprises:
a support frame (401) detachably connected with the table top (103) of the support body (1);
the clamper (402) is matched with the through hole on the support frame (401) in a sliding way, and the moving direction of the clamper (402) is vertical to the rotary disc (301) of the friction unit (3);
a weight rod (403) in sliding fit with the through hole of the support frame (401), wherein one end of the weight rod (403) is contacted with the holder (402);
and a plurality of weights (404).
8. The method for detecting the friction wear tester for the multi-sample synchronous wear resistance detection according to claim 1, is characterized by comprising the following steps:
the method comprises the following steps: confirming the friction time t according to the material and the friction radius of the sample (5);
step two: rubbing each sample (5) on the same sand paper (302) under different pressures, and recording the abrasion loss m of each sample (5) under each pressure; the abrasion loss is the mass of the sample before and after the friction is measured by a balance, and the difference value obtained by subtracting is the abrasion loss m of the test;
step three: replacing different abrasive papers (302), and repeating the step two to realize the detection of the abrasion loss of each test sample (5) under different abrasive papers (302);
step four: calculating the surface wear resistance K of the cladding layer of each sample (5) according to a formula (I), wherein the higher the wear resistance is, the worse the wear resistance is;
wherein:
m is the amount of wear of each specimen at each pressure;
v area of wear;
p is the pressure to which the wear is subjected;
and t is the abrasion time.
9. The detection method according to claim 8, wherein the confirmation of the friction time in step one is specifically:
according to the material and the friction radius r of the sample (5), the total friction path L and the rotation angular speed omega of the turntable (301), the friction time t is calculated according to a formula (II):
10. the test method according to claim 8, wherein each sample (5) of step two is rubbed against the same coated abrasive (302) under different pressures, and the pressure of the sample (5) is changed while replacing a new coated abrasive (302) having the same coefficient of friction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010904774.2A CN111929188A (en) | 2020-09-01 | 2020-09-01 | Friction wear testing machine for multi-sample synchronous wear resistance detection and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010904774.2A CN111929188A (en) | 2020-09-01 | 2020-09-01 | Friction wear testing machine for multi-sample synchronous wear resistance detection and detection method |
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| CN111929188A true CN111929188A (en) | 2020-11-13 |
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| CN202010904774.2A Pending CN111929188A (en) | 2020-09-01 | 2020-09-01 | Friction wear testing machine for multi-sample synchronous wear resistance detection and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088562A (en) * | 2021-10-15 | 2022-02-25 | 中铁工程装备集团有限公司 | Material wear resistance test equipment and test method |
| CN115060616A (en) * | 2022-06-17 | 2022-09-16 | 广东省医疗器械质量监督检验所 | Flexible centering wear device for testing wear resistance of orthodontic appliance |
-
2020
- 2020-09-01 CN CN202010904774.2A patent/CN111929188A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088562A (en) * | 2021-10-15 | 2022-02-25 | 中铁工程装备集团有限公司 | Material wear resistance test equipment and test method |
| CN115060616A (en) * | 2022-06-17 | 2022-09-16 | 广东省医疗器械质量监督检验所 | Flexible centering wear device for testing wear resistance of orthodontic appliance |
| CN115060616B (en) * | 2022-06-17 | 2023-02-03 | 广东省医疗器械质量监督检验所 | Flexible centering wear device for testing wear resistance of orthodontic appliance |
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