CN107340195A - For detecting the detection means of sample anti-wear performance - Google Patents

Abstract

The present invention provides a kind of detection means for being used to detect sample anti-wear performance, including：Fluid space；With sample stationary fixture, the sample stationary fixture is located in fluid space；Wherein it is detected sample to be fixed on sample stationary fixture, and be detected sample to produce relative movement relative to the fluid in fluid space；Wherein, at least a portion for being detected sample persistently keeps contacting with fluid in relative movement thereof.

Description

Testing device for testing the wear resistance of samples

technical field

The invention relates to a detection device for detecting the wear resistance of a sample.

Background technique

Wear resistance refers to the ability of a material to resist wear under certain friction conditions. Wear phenomenon is very common. There are many physical, chemical and mechanical reasons for this phenomenon, mainly composed of abrasive wear, adhesive wear, fatigue wear, and corrosive wear. Wear resistance is related to almost all properties of materials, and under different wear mechanism conditions, there are different requirements for material properties in order to improve wear resistance. Abrasion resistance in the coatings industry refers to the resistance of a coating to frictional mechanical or physical action. In fact, it is the embodiment of the comprehensive effect of hardness, adhesion and cohesion of the coating. Under the same conditions, the wear resistance of the coating is better than that of the metal material itself, because of its viscoelastic effect, which can buffer, absorb and release energy. It has a protective effect on the metal material itself. Many products need to be in direct contact with the user during use, or have repeated friction and contact with other objects. This repeated contact may cause the surface of the product to wear and affect the appearance of the product and even the performance of the product. Therefore, the surface of this type of product is durable. Abrasion performance is an important quality index. In the process of product quality control, the surface abrasion resistance of the product must be tested. This kind of surface wear resistance test is multi-purpose friction machine, which produces wear through friction with the test head, and the surface wear resistance of the product can be judged by calculating the wear amount, wear depth and other related data. This traditional test is difficult to simulate actual working conditions, so the reliability and accuracy of the results are insufficient.

For example, the Chinese utility model patent with the application number 201320573663.3 published on April 2, 2014, the name of its invention is "an improved device for testing the wear resistance of coatings", which includes a frame and a watch case clamping device And set several groups of roller groups on one side of the frame, the fabric belt forms a closed loop around the roller groups, the case to be tested clamped by the case clamping device is in contact with the surface of the fabric belt, and a control panel is also set above the frame. system, the control system includes a control box and a timer set on the control box.

This patent application is suitable for the tribological performance test of various coatings such as electroplating and vacuum coating. The test results of different hardness coatings are obvious, and it is easy to distinguish the anti-wear performance of coatings, which has a high reference value. The fabric belt is used as the friction material in the test, and a constant friction force is applied to the surface of the test piece. The fabric belt has good adaptability to the geometric shape of the workpiece, and can test the wear resistance of parts with complex shapes such as watch cases and straps. test. But above-mentioned patent application still exists following deficiency:

It cannot fully simulate the wear of the product in the real working environment, such as the impact of sand particles on the friction properties of the metal coating in abrasive environments such as sandy water or sea water; and the impact of different solutions on the friction properties of the metal coating at different temperatures; The stress angle of the test sample cannot be adjusted; the friction performance of different stress surfaces of the fabric belt cannot be tested.

Another example is the Chinese utility model patent with the application number 201420738034.6 published on April 15, 2015. The name of its invention is "a metal wear resistance test device", which includes a working table, a sample fixing fixture and a lifting The test head is equipped with a horizontal slide rail and a hydraulic cylinder on the workbench; the bottom of the sample fixing fixture is provided with a horizontal chute matching the horizontal slide rail, and one side of the sample fixing fixture is fixedly connected with the piston rod of the hydraulic cylinder; the piston rod Displacement sensors and counters are arranged on the top of the test head; a loading device is arranged on the top of the test head; a ring-shaped liquid storage cylinder is set on the outside of the loading device, and several spray holes are evenly arranged on the bottom of the liquid storage cylinder. The solution. Although this patent application solves the influence of testing only under atmospheric conditions and not close to the working condition solution to a certain extent, the reliability and test results are all improved. But above-mentioned patent application also still exists following deficiency:

It cannot completely simulate the wear of the product in the real working environment, such as the impact of sand particles on the friction performance in abrasive environments such as sandy water or sea water; there are also the effects of different solutions on the friction performance of materials at different temperatures; the test sample The force angle cannot be adjusted; the friction performance of different force-bearing surfaces of the sample cannot be tested; and multiple samples cannot be tested at the same time. The long test time leads to low test efficiency.

Contents of the invention

The present invention aims to solve one or more of the above-mentioned problems, and its purpose is to provide a detection device for detecting the wear resistance of a sample (or product), which can simulate the wear of the sample in a real working environment to a great extent ( For example, in abrasive environments such as sandy water or seawater), so as to reliably detect the wear resistance of the sample in actual use.

The invention provides a detection device for detecting the wear resistance of a sample, comprising: a fluid space; and a sample fixing fixture, the sample fixing fixture is located in the fluid space; Relative movement can be generated relative to the fluid in the fluid space; wherein at least a part of the sample to be detected is kept in constant contact with the fluid during the relative movement.

With the above configuration, the sample to be tested can move relative to the fluid and at least a part of the sample to be tested is kept in contact with the fluid during the relative movement, so at least a part of the sample to be tested can simulate the impact of the fluid on the material of the test sample effect on wear resistance. In addition, by introducing different fluids into the fluid space, such as pure water, sandy water, salt water (such as seawater), organic solutions, etc., the influence of different environmental factors on wear resistance can be simulated, so that it is more reliable, Accurately detect the wear resistance of the material of the tested sample.

Preferably, in the testing device for testing the wear resistance of a sample according to the present invention, the fluid space may be defined by an inner casing containing a predetermined amount of fluid, and the sample to be tested is displaceably disposed in the chamber of the inner casing; When the sample to be detected is moved in the chamber of the inner casing, the sample to be detected moves relative to the fluid.

With the above configuration, since the sample to be tested is moved in the chamber of the inner casing, and the fluid is directly contained in the inner casing, the sample to be tested moves relative to the fluid similar to a stirrer. Therefore, the wear resistance of the material of the tested sample can be easily detected.

Preferably, in the testing device for testing the wear resistance of samples according to the present invention, the sample to be tested may be at least one sample to be tested, and each of the at least one sample to be tested is formed in a shape relative to the bottom surface of the inner casing. Different angles are fixed on the corresponding sample fixing fixtures.

With the above structure, the tested sample can be at different angles in the fluid, so as to detect the wear resistance of the material of the tested sample at different angles. In addition, when at least one detected sample is a plurality of detected samples, multiple detected samples can be detected simultaneously in the detection device, thereby greatly improving the detection efficiency.

Preferably, the detection device for testing the wear resistance of samples according to the present invention further includes a turntable disposed inside the inner casing and a rotating shaft driving the turntable to rotate; the sample fixing fixture is rotatably arranged on the turntable.

With the above structure, the tested sample fixed on the sample fixing fixture can rotate with the rotating shaft and the turntable, and the speed of the rotating shaft can be controlled by the motor, so the moving speed of the tested sample relative to the fluid can be precisely controlled, so that it is more accurate, Reliably detect the wear resistance of the material of the tested sample.

Preferably, the testing device for testing the wear resistance of a sample according to the present invention further includes a temperature control device for controlling the temperature of the fluid in the inner casing.

With the above structure, the wear resistance of the material of the tested sample can be detected at different temperatures, so that the detection result is more accurate and reliable.

Preferably, in the testing device for testing the wear resistance of a sample according to the present invention, the sample fixing fixture includes a tray-shaped fixture seat, and the sample to be tested is fixed on the fixture seat by screws.

With the above configuration, the sample to be inspected can be easily registered by the tray-shaped jig base so as to be fixed on the jig base.

Preferably, in the testing device for testing the wear resistance of a sample according to the present invention, the sample fixing fixture includes a snap ring structure, and the sample to be tested is fixed in the snap ring structure.

With the above structure, since the snap ring structure can change its opening size to clamp objects of different sizes, the size and properties of the sample to be tested are not limited, and the scope of application is wider.

Preferably, in the testing device for testing the wear resistance of a sample according to the present invention, the fluid space is defined by an inner casing containing a predetermined amount of fluid, and a pipe for fluidly communicating the fluid inlet of the inner casing with the fluid outlet, defined by The detection sample is non-displaceably arranged in the cavity of the inner casing; when the fluid flows from the fluid inlet to the fluid outlet through the inner casing, the detected sample moves relative to the fluid.

With the above-mentioned configuration, it is possible to make the fluid flow through the chamber of the inner housing by disposing the sample to be detected in the chamber of the inner housing immovably, that is, by moving the fluid without moving the sample to be detected so that there is a gap between the two. Relative movement, so the wear resistance of the material of the tested sample can be easily detected.

Preferably, in the testing device for testing the wear resistance of samples according to the present invention, the sample to be tested is at least one sample to be tested, and each of the at least one sample to be tested has a different shape relative to the bottom surface of the inner casing. The angle is fixed on the corresponding sample fixing fixture.

With the above structure, the tested sample can be at different angles in the fluid, so as to detect the wear resistance of the material of the tested sample at different angles. In addition, when at least one detected sample is a plurality of detected samples, multiple detected samples can be detected simultaneously in the detection device, thereby greatly improving the detection efficiency.

Preferably, the testing device for testing the wear resistance of a sample according to the present invention further includes a temperature control device for controlling the temperature of the fluid.

With the above structure, the wear resistance of the material of the tested sample can be detected at different temperatures, so that the detection result is more accurate and reliable.

Description of drawings

In the attached picture:

1 is a schematic diagram of a detection device according to a first embodiment of the present invention;

Fig. 2 is a partial schematic diagram of setting the angle of the sample to be detected according to the first embodiment of the present invention; and

Fig. 3 is a schematic diagram of a detection device according to a second embodiment of the present invention.

detailed description

In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Fig. 1 is a schematic diagram of a testing device for testing the wear resistance of a sample according to a first embodiment of the present invention. The detection device includes an inner casing 1 and a sample fixing fixture 2 . A fluid space is defined in the inner housing 1 and can contain a predetermined amount of fluid, which is subject to submersion of at least a part of the tested sample 3 (as an example of the tested sample) described below. In this embodiment, the inner housing 1 includes a base 10 whose upper surface serves as a bottom surface 10 a of the inner housing 1 . In this embodiment, the fluid includes pure water, water containing sand, salt water (such as sea water), organic solution, and the like. In addition, the fluid space may be a closed space to prevent the fluid contained therein from leaking. However, it should be understood that the fluid space does not have to be airtight, as long as it can contain a predetermined amount of fluid.

The detection device also includes a turntable 14 arranged inside the inner housing 1 and a rotating shaft 11 that drives the turntable 14 to rotate. One end of the rotating shaft 11 is connected to the turntable 14, and the other end is located on the opposite side of the above-mentioned one end relative to the base 10 and is connected to the turntable by a belt 12. A motor 13 is connected, and its rotational speed is controlled by the motor 13 . The turntable 14 has a cylindrical shape. However, it can be understood that the turntable 14 can be in other shapes.

The sample holding fixture 2 is located in this fluid space. There are multiple sample fixing jigs 2 . However, it can be understood that there can also be one sample fixing jig 2 . Furthermore, in the present embodiment, a plurality of sample fixing jigs 2 are arranged on the turntable 14 . Each sample holding jig 2 includes a tray-shaped jig seat 2b.

As shown in FIGS. 1 and 2 , the sample 3 to be tested is fixed on the sample fixing jig 2 . In the present embodiment, there are also a plurality of samples 3 to be inspected, and they are in the shape of a box. Specifically, each tested sample 3 is respectively fixed on the corresponding sample fixing jig 2 . However, it can be understood that the sample 3 to be detected can also be one.

Thus, when the motor 13 drives the rotating shaft 11 to rotate, the turntable 14 , the sample fixing jig 2 arranged on the turntable 14 and the tested sample 3 fixed on the sample fixing jig 2 rotate together accordingly. Thus, the sample to be detected can be displaceably disposed in the chamber of the inner casing 1 . Therefore, when the sample to be tested 3 is moved in the chamber of the inner casing 1 , the sample to be tested 3 moves relative to the fluid contained in the inner casing 1 .

Herein, the manner in which a sample 3 to be tested is fixed on a corresponding sample fixing jig 2 is taken as an example for illustration. As shown in FIG. 2 , the sample fixing jig 2 is rotatably fixed to the turntable 14 at its center portion, eg, on the outer circumference of the turntable 14 , by a bolt 2 a. The sample fixing jig 2 can be rotated relative to the outer circumference of the turntable 14 by the bolt 2a, and fixed after rotating a predetermined angle, which is the same as that of the tested sample 3 to be described later relative to the bottom surface 10a (in this embodiment, the bottom surface 10a). Surface 10a is flush with the horizontal plane) corresponds to the angle. The two side ends of the sample fixing jig 2 and the two side ends of the tested sample 3 are correspondingly provided with threaded holes that can be aligned with each other.

Further, the block 4 is provided for adjusting the angle of the tested sample 3 relative to the bottom surface 10a. Pad block 4 is block shape. When the block 4 is placed on the base 10 so that its lower surface is placed parallel to the bottom surface 10a, the upper surface of the block 4 is inclined to a certain degree with respect to the bottom surface 10a. Therefore, when the sample to be tested 3 is placed on the block 4 such that one side surface of the sample to be tested 3 is placed in parallel on the upper surface of the block 4, the sample to be tested 3 is inclined to a certain degree with respect to the bottom surface 10a. The same degree as the inclination of the spacer 4 with respect to the bottom surface 10a. In this case, the inclined tested sample 3 is inserted into the clamp seat 2b of the sample fixing jig 2, and the two side ends of the tested sample 3 and the threaded holes at the two side ends of the sample fixing jig 2 are aligned with each other. In this state, screws 2 c (for example, two in this embodiment) are inserted into the threaded holes from the side of the tested sample 3 , thereby fixing the tested sample 3 to the corresponding sample fixing jig 2 .

In addition, in a manner similar to the above, other tested samples 3 are also fixed on the corresponding sample fixing jigs 2 at different angles with respect to the bottom surface 10 a of the inner casing 1 . Specifically, it is possible to manufacture spacers 4 with upper surfaces of different inclinations, so that the tested sample 3 has different inclination angles relative to the bottom surface 10a while being placed on the upper surface of the spacer 4, as shown in Figure 1 shown.

Furthermore, the detection device according to the first embodiment of the present invention may include temperature control means for controlling the temperature of the fluid in the inner housing. Specifically, the temperature control device includes a heater 6, a temperature control box 8 and a heating power source 9, and the three are interconnected to form a temperature control loop. In this embodiment, the outer shell 7 is arranged outside the inner shell 1, forming a space therebetween. The heater 6 is placed in the space and connected to the temperature control box 8 and the heating power source 9 through wires, so as to heat the fluid in the inner shell 1 . The temperature control box 8 can control the heating temperature of the fluid by the heater 6 . In this way, the fluid inside the inner housing 1 can have a certain temperature.

The assembling operation of fixing the tested sample 3 to the sample fixing fixture 2 and the operation of the testing device will be described in detail below with reference to the accompanying drawings.

First, the operation of fixing the sample 3 to be tested will be described. A plurality of spacers corresponding to the number of samples 3 to be tested are respectively placed on the base 10 of the inner housing 1 so that each spacer 4 has a different inclination angle with respect to the bottom surface 10 a of the base 10 . Then, the samples 3 to be inspected are placed one by one on the corresponding blocks 4 so as to be inclined relative to the bottom surface 10a by a degree of inclination of the upper surface of the blocks 4 relative to the bottom surface 10a. Then the tested sample 3 is moved close to the corresponding sample fixing fixture 2 and inserted into the fixture seat 2b of the sample fixing fixture 2 under the condition of being placed on the spacer 4 , during this process, the sample fixing fixture 2 can rotate relative to the turntable 14 , so that the threaded holes on both sides of the sample fixing jig 2 are aligned with the threaded holes on both sides of the tested sample 3 . Then, the screws 2c are inserted into the threaded holes of the tested samples 3 and the sample fixing jigs 2, thereby fixing the plurality of tested samples 3 on the corresponding sample fixing jigs 2, respectively. Then, the sample fixing jig 2 is fixed to the turntable 14 at its center portion by a bolt 2a. Thus, the sample fixing jig 2 and the sample to be inspected 3 are fixed together in the turntable 14 at different angles with respect to the bottom surface 10 a. Thus, the assembly operation of the tested sample 3 is completed.

Then, the operation process of the detection device is described. A predetermined amount of fluid is contained in the cavity of the inner casing 1 , ie, in the fluid space, and the predetermined amount is subject to submerging at least a part of the above-mentioned fixed sample 3 to be tested. The motor 13 drives the rotating shaft 11 to rotate through the belt 12, so that the turntable 14, the sample fixing jig 2 fixed thereon, and the tested sample 3 rotate together. The fluid moves relative to each other and at least a part of the sample 3 to be detected is in continuous contact with the fluid during the relative movement. At the same time, the heater 6 of the temperature control device can heat the fluid in the fluid space and the heating temperature is controlled.

The following technical effects can be achieved by using the detection device for detecting the wear resistance of samples constructed above and its operation.

(1) In this embodiment, different fluids can be introduced into the chamber (fluid space) of the inner housing 1, thereby simulating the different working environments of the tested sample 3, for example, the fluid is water with different sand contents , pure water, salt water (such as seawater) or organic solutions and other real environments. Therefore, by simulating the impact of these environmental factors on the wear resistance of the material of the tested sample 3 to a great extent, and therefore by simulating these environments to a great extent, the wear resistance of the tested sample 3 can be detected more accurately and reliably. Abrasion resistance of materials in these environments.

(2) In this embodiment, the rotational speed of the rotating shaft 11 can be regulated by the motor 13, which can simulate the influence of the same fluid on the wear resistance of the material of the tested sample 3 at different rotational speeds, so as to be more accurate , Reliably detect the wear resistance of the material of the tested sample 3 at different rotational speeds.

(3) In this embodiment, a plurality of samples 3 to be tested can be set in the detection device at the same time. Therefore, the wear resistance of a plurality of tested samples 3 of different materials can be tested simultaneously. Therefore, the detection efficiency can be greatly improved.

(4) In this embodiment, a plurality of samples 3 to be tested can be set in the testing device at the same time, and each sample 3 to be tested is fixed to the sample holder at different angles relative to the bottom surface 10a of the inner casing 1. Fixture 2. Therefore, the influence relationship of the wear resistance of the material of the tested sample 3 under different stress angles can be simulated, so as to more accurately and reliably detect the wear resistance of the material of the tested sample 3 under different angles.

(5) In the present embodiment, the detection means may include temperature control means for controlling the temperature of the fluid. Therefore, the impact relationship of the wear resistance of the material of the tested sample 3 can be simulated at different temperatures. For example, the wear resistance of the tested sample 3 may be different under different temperatures in spring, summer, autumn and winter, so the present invention can more accurately and reliably The wear resistance of the material of the tested sample 3 at different temperatures was detected.

The first embodiment according to the present invention is basically as described above. However, the present invention is not limited thereto. It should be understood that those skilled in the art may make various modifications to the above structures, which all belong to the scope of the present invention.

For example, in the above-mentioned first embodiment, the sample fixing fixture 2 includes a tray-shaped fixture seat 2b, and the sample 3 to be tested is fixed on the fixture seat 2b by the screw 2c, but the present invention is not limited thereto, and the sample fixing fixture 2 can have other structures. For example, the sample fixing jig 2 may have a common snap ring structure, and the tested sample 3 may be fixed in the snap ring structure.

A detection device according to a second embodiment of the present invention will be described below with reference to FIG. 3 . Fig. 3 is a schematic diagram of a detection device according to a second embodiment of the present invention.

As shown in Figure 3, the detection device includes a sealed fluid space and a sample fixing fixture 102, the fluid space is composed of an inner casing 101 containing a predetermined amount of fluid and a fluid connection between the fluid inlet 101a and the fluid outlet 101b of the inner casing 101. Conduit 101c defines. The inner housing 101 is fluidly connected with the fluid control device 104 through the pipe 101c. The fluid control device 104 includes a fluid input/output unit 104a for input/output of fluid, a temperature control device 104b for controlling the temperature of the fluid, a flow rate control device 104c for controlling the flow rate of the fluid, and the like.

A sample holding fixture 102 is located within the fluid space, more specifically, within the inner housing 101 . The sample fixing jig 102 can be fixed in the chamber of the inner housing 101 without displacement. The samples 103 to be tested are fixed on the corresponding sample fixing jigs 102 at different angles with respect to the bottom surface 1010 a of the inner housing 101 .

Fluid flows from the fluid control device 104 into the chamber of the inner housing 101 through the fluid inlet 101a, flows through the chamber of the inner housing 101 where the sample fixing jig 102 and the sample 103 to be tested 103 are fixed, and flows from the inner housing 101 through the fluid outlet 101b. The housing 101 flows out and into the fluid control device 104 again. In the fluid control device 104, the temperature and flow rate of the fluid are controlled by the temperature control device 104b and the flow rate control device 104c, respectively. Therefore, when the fluid flows from the fluid inlet 101a to the fluid outlet 101b through the inner casing 101, the detected sample 103 moves relative to the fluid, and the relative movement is actually caused by the fluid moving but the detected sample 103 does not move. of.

According to the detection device of the second embodiment of the present invention, it is also possible to simulate the influence relationship of multiple tested samples 103 on the wear performance of the material of the tested sample 103 at different flow rates, different temperatures, and different angles, thereby being more accurate and reliable. The wear resistance of the material of the tested sample 103 is accurately detected. In addition, the wear resistance of a plurality of samples 103 to be tested can be detected simultaneously, so the detection efficiency can be improved.

Although it has been described in detail with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the scope of the embodiments described above.

Claims (10)

1. A detection device for detecting the wear resistance of samples, characterized in that, comprising: fluid space; and A sample fixing fixture, the sample fixing fixture is located in the fluid space; wherein The sample to be tested is fixed on the sample fixing fixture, and the sample to be tested can move relative to the fluid in the fluid space; wherein, At least a portion of the sample to be tested is in continuous contact with the fluid during the relative movement. 2. The testing device for testing the wear resistance of samples according to claim 1, wherein the fluid space is limited by an inner casing containing a predetermined amount of fluid, and the sample to be tested is displaceably arranged in within the cavity of the inner housing; When the sample to be detected is moved in the chamber of the inner casing, the sample to be detected moves relative to the fluid. 3. The detection device for detecting the wear resistance of samples as claimed in claim 2, wherein the detected sample is at least one detected sample, and each of the at least one detected sample is compared to The bottom surface of the inner casing is fixed on the corresponding sample fixing jig in a manner of different angles. 4. The detection device for detecting the wear resistance of samples according to claim 3, further comprising a turntable disposed inside the inner housing and a rotating shaft driving the turntable to rotate; The sample fixing fixture is rotatably arranged on the turntable. 5. The detection device for detecting the wear resistance of samples according to claim 4, further comprising a temperature control device for controlling the temperature of the fluid in the inner casing . 6. The detection device for detecting the wear resistance of a sample according to any one of claims 1-5, wherein the sample fixing fixture comprises a tray-shaped fixture seat, and the sample to be tested is fixed by screws on the fixture seat. 7. The detection device for detecting the wear resistance of a sample according to any one of claims 1-5, wherein the sample fixing fixture includes a clasp structure, and the sample to be tested is fixed on the in the clasp structure. 8. The detection device for detecting the wear resistance of samples as claimed in claim 1, wherein the fluid space is composed of an inner housing containing a predetermined amount of fluid, and the fluid inlet of the inner housing is connected with the fluid defined by a conduit in fluid communication with the outlet, and the sample to be tested is non-displaceably disposed within the chamber of the inner housing; When the fluid flows from the fluid inlet to the fluid outlet through the inner casing, the detected sample moves relative to the fluid. 9. The detection device for detecting the wear resistance of samples according to claim 8, wherein the detected sample is at least one detected sample, and each of the at least one detected sample is compared to The bottom surface of the inner casing is fixed on the corresponding sample fixing jig in a manner of different angles. 10. The testing device for testing the wear resistance of a sample according to claim 8 or 9, characterized in that it further comprises a temperature control device for controlling the temperature of the fluid.