A metal material corrosion and wear testing machine

Abstract

The present invention relates to a metal material corrosion and wear testing machine applied to the field of wear testing devices, which integrates friction and wear testing and electrochemical testing functions. By optimizing the sample fixing mechanism, heating system and data monitoring system, an efficient, stable and accurate testing device is provided. The device adopts a conical suction cup and a negative pressure hole design to achieve rapid fixation and stable support of the metal sample, ensuring position stability during the experiment. Through the arrangement of a reference electrode and a counter electrode, real-time monitoring of electrochemical signals during the friction and wear process is achieved. Combined with a high-temperature ceramic heating rod and a circulating heating system of a liquid medium, the temperature uniformity and stability of the test environment are ensured. The design of an adjusting tube and an adjusting nut allows the user to flexibly adjust the position of a pressure head and an electrode to ensure accurate control of experimental conditions. At the same time, a force sensor and a temperature sensor provide high-precision real-time data acquisition, and a particle collection groove effectively maintains the cleanliness of the test environment.

Description

Technical Field

[0001] The invention relates to a metal material wear tester, in particular to a metal material corrosion wear tester applied in the field of wear test devices. Background Art

[0002] With the development of industrial technology, metal materials are used more and more widely in various harsh working conditions, and the requirements for their wear resistance and corrosion resistance are becoming higher and higher. However, existing wear testing equipment often finds it difficult to simultaneously monitor the electrochemical behavior of metal materials while conducting friction and wear tests, which makes it difficult to fully evaluate the performance of materials in practical applications.

[0003] The specification of Chinese invention patent CN112147021B discloses an electrochemical testing device for the dynamic process of growth and decline of metal passivation film. The device achieves the clamping of the sample and the wear of the surface passivation film by means of overlapping sand sheet groups. It can adapt to the change of sample size within a certain range and perform dynamic electrochemical testing of the passivation film through an electrochemical three-electrode system. However, the device has certain limitations in the integration of wear and electrochemical testing, especially in terms of uniform heating of the liquid medium and fixation stability of the sample during the test, which may affect the accuracy and repeatability of the test results.

[0004] The specification of Chinese invention patent CN107300508B discloses a testing machine for the impact corrosion and wear resistance of metal materials, which is suitable for simulating the interaction of impact wear and corrosion in mining, machinery and other environments. The device is reasonably designed and easy to operate. It can better simulate actual working conditions and perform electrochemical measurements. However, the device is mainly aimed at the impact corrosion and wear scenes, and there are still deficiencies in the detailed analysis of the detailed friction and wear process and its electrochemical behavior, especially in the flow control of liquid media and the accurate collection of test data. There is still room for improvement.

[0005] Although the above-mentioned existing technologies have solved the wear and electrochemical testing problems of metal materials to a certain extent, they still have the following limitations: during the wear test, the sample fixing method is complicated and not stable enough, which affects the repeatability of the test; the liquid medium is heated unevenly, which easily leads to temperature fluctuations in the test environment and affects the accuracy of the electrochemical signal; the test device lacks a flexible operation and adjustment mechanism and is difficult to adapt to samples of different types and sizes. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to realize the simultaneous conduct of friction and wear testing and electrochemical testing, with an efficient and stable sample fixing mechanism, precise temperature control and uniform heating function of the liquid medium, a flexible operation and adjustment system, and high-precision data acquisition and real-time monitoring functions.

[0007] In order to solve the above problems, the present invention provides a metal material corrosion and wear testing machine, including an electrochemical workstation, a constant potential instrument and a solution box. A fixing ring is fixedly connected to the center of the solution box, the top of the fixing ring is a circular ring structure, and the part of the solution box located inside the circular ring and the outer end of the fixing ring is fixedly connected to a guide plate. A sample fixing ring is provided in the fixing ring, and a metal sample is fixedly connected to the sample fixing ring through epoxy resin. A dial is fixedly connected to the top of the sample fixing ring. A sealing ring is clamped at the top of the circular ring structure of the solution box. The sealing ring is made of elastic material, and a fixing plate is fixedly connected to the top of the sealing ring. A pressure head is slidably connected to the center of the fixing plate. Four ball heads are connected to the ball head of the fixing plate, and a reference electrode, a counter electrode, a high-temperature ceramic heating rod and a wire are fixedly connected in the four ball heads respectively. The metal sample is electrically connected to the electrochemical workstation through the wire, and the reference electrode and the counter electrode are both electrically connected to the electrochemical workstation. The fixing ring is filled with a liquid working medium, a reciprocating motion module is fixedly connected to the bottom of the solution box, and the high-temperature ceramic heating rod is electrically connected to the constant potential instrument.

[0008] The above-mentioned metal material wear testing machine realizes efficient sample fixation, organic combination of friction and wear and electrochemical testing, uniform heating and circulation of liquid medium, flexible operation and precise adjustment, real-time monitoring and high-precision data acquisition, and effective particle processing. These design innovations significantly improve the efficiency, accuracy and reliability of the experiment.

[0009] As a further improvement of the present application, a plurality of negative pressure holes are opened on the sample fixing ring along its axial direction, a partition is fixedly connected to each of the plurality of negative pressure holes, a piston is slidably connected to the negative pressure hole, and the pressure head is made of non-metallic material.

[0010] As a further improvement of the present application, the bottom ends of the multiple negative pressure holes are fixedly connected with suction cups, the suction cups are made of elastic material, the suction cups are conical structures, and the end with a smaller diameter of the conical structure is arranged close to the sample fixing ring.

[0011] As a further improvement of the present application, a groove matching with the suction cup is provided at a position corresponding to the fixing ring and the suction cup, and a through hole is provided at a position corresponding to the suction cup at the bottom end of the fixing ring.

[0012] As another improvement of the present application, the piston includes a lower piston, the top of the lower piston is fixedly connected to a connecting column, the top of the connecting column is fixedly connected to a pressing column, the partition in the negative pressure hole is slidably connected to the connecting column, a spring is fixedly connected between the top of the partition and the pressing column, and the spring is a conical spring.

[0013] As another improvement supplement of the present application, a through hole is opened on the partition in the negative pressure hole along the axial direction of the negative pressure hole, and a plurality of adjusting tubes are slidably connected to the fixed plate, and the plurality of adjusting tubes are arranged parallel to the axial direction of the pressure head.

[0014] As another improvement supplement to the present application, the outer ends of the adjusting tube located at the top and bottom ends of the fixing plate are threadedly connected with adjusting nuts, the outer wall of the pressure head located at the top of the fixing plate is provided with a boss, and a plurality of weights are provided at the top of the boss.

[0015] As another improvement of the present application, a guide column is slidably connected to the inner wall of the adjusting tube, and the bottom end of the guide column is connected to the fixed part of the top of the reciprocating motion module, the guide plate includes a plurality of guide blocks, and an edge of the top of the guide block is provided with an angle for guiding the liquid working medium, a groove is provided between the guide plate and the sample fixing ring for accommodating particles generated by wear of the metal sample, a force sensor is provided on the pressure head for measuring the friction force, a temperature sensor is fixedly connected to the bottom end of the pressure head, and a plurality of stirring blocks are fixedly connected to the bottom end of the fixed plate.

[0016] A metal material corrosion and wear testing machine, the use method of which comprises the following steps;

[0017] S1: Fix the metal sample in the sample fixing ring with epoxy resin, place the sample fixing ring into the fixing ring, compress the suction cup by pressing the piston, and then release the piston to make the suction cup adsorbed onto the solution box to achieve rapid fixation of the sample;

[0018] S2: Assemble the fixed plate, pressure head, ball head, reference electrode, counter electrode, high temperature ceramic heating rod, wire and adjustment tube, and put the adjustment tube on the outside of the guide column until the bottom of the pressure head contacts the top of the metal sample, and install the required weight on the top of the pressure head;

[0019] S3: Adjust the height of the reference electrode, counter electrode, high temperature ceramic heating rod, wire, stirring block and the top of the guide plate by adjusting the nut, and adjust the angle of the ball head to set the optimal working angle of the reference electrode, counter electrode and high temperature ceramic heating rod;

[0020] S4: Start the reciprocating motion module to make the solution box and its internal components reciprocate, the friction and wear process begins, the bottom end of the indenter grinds the metal sample, and at the same time, the electrochemical signal is detected in real time through the reference electrode and the counter electrode;

[0021] S5: The high-temperature ceramic heating rod heats the liquid working medium, and the liquid working medium circulates through the guide plate and the stirring block to evenly distribute the heat. At the same time, the particles of the worn metal sample are collected in the groove between the guide plate and the sample fixing ring;

[0022] S6: During the test, adjust the angle and height of the reference electrode, counter electrode and high-temperature ceramic heating rod at any time as needed to ensure the test accuracy and data stability.

[0023] In summary, this application has the following beneficial effects:

[0024] 1. High efficiency and stability of sample fixation; by designing structures such as suction cups, pistons and negative pressure holes, the sample can be quickly fixed and stably supported. The suction cup adopts a conical structure, which can provide strong adsorption force to ensure that the metal sample will not move during the test, thereby ensuring the stability and repeatability of the test. At the same time, the design of the negative pressure fixing mechanism makes the installation and removal of the sample more convenient, improving the efficiency of experimental preparation.

[0025] 2. Organic combination of friction and wear testing and electrochemical testing; Integrate friction and wear testing and electrochemical testing in one device, and monitor the electrochemical signals of metal samples in the friction and wear process in real time through reference electrodes and counter electrodes. This synchronous testing method can comprehensively analyze the physical and chemical behaviors of metal materials in the friction and wear process, provide richer experimental data, and provide an effective means for studying the wear resistance and corrosion resistance of metal materials.

[0026] 3. Uniform heating and effective circulation of liquid medium: A high-temperature ceramic heating rod is set in the device, and the uniform heating and effective circulation of the liquid medium are achieved through the cooperation of the guide plate and the stirring block. The heating system ensures the uniform temperature of the liquid medium and avoids local overheating or overcooling, thereby ensuring the stability of the test environment. This design greatly improves the reliability of the test and reduces the errors caused by temperature fluctuations.

[0027] 4. Operational flexibility and adjustment accuracy: Through the adjustment tube, adjustment nut and ball head and other structures, the device can flexibly adjust the position and angle of each component. The experimenter can adjust the height of the pressure head, the applied pressure and the position and angle of the electrode at any time according to the actual test requirements, thereby ensuring the precise control of the test conditions. The flexible adjustment mechanism enables the device to adapt to different types of experiments, expanding its application range.

[0028] 5. Real-time monitoring and high-precision collection of test data: The device is integrated with force sensors and temperature sensors, which can monitor the friction force and temperature changes on the surface of the metal sample in real time. Through these sensors, the device can collect high-precision test data in real time to ensure the accuracy and reliability of the data. At the same time, the reference electrode, counter electrode and high-temperature ceramic heating rod remain stationary during the test, which not only improves the credibility of the experimental results, but also provides more reliable basic data for subsequent analysis and research.

[0029] 6. Particle handling and environmental cleaning and maintenance: A groove is provided between the sample fixing ring and the guide plate to collect particles generated during friction and wear. This design effectively avoids the dispersion of particles in the liquid medium, prevents interference with electrochemical test results, and maintains the cleanliness of the test environment. At the same time, this particle collection mechanism also reduces wear on the internal components of the device and extends the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is the overall structure diagram of this application;

[0031] Figure 2 This is an overall exploded view of this application;

[0032] Figure 3 Partial explosion for this application Figure 1 ;

[0033] Figure 4 Partial explosion for this application Figure 2 ;

[0034] Figure 5 Partial explosion for this application Figure 3 ;

[0035] Figure 6 Partial explosion for this application Figure 4 ;

[0036] Figure 7 Partial explosion for this application Figure 5 ;

[0037] Figure 8 This is the front view of the application;

[0038] Fig. 9 For this application Figure 8 Middle AA section view;

[0039] Fig.10 For this application Fig. 9 Enlarged view of point B in the middle;

[0040] Fig.11 This is the appearance structure diagram of this application.

[0041] Description of the numbers in the figure:

[0042] 1. Solution box; 2. Fixing ring; 3. Guide plate; 4. Sample fixing ring; 5. Epoxy resin; 6. Metal sample; 7. Dial; 8. Sealing ring; 9. Fixing plate; 10. Pressure head; 11. Ball head; 12. Reference electrode; 13. Counter electrode; 14. High-temperature ceramic heating rod; 15. Wire; 16. Negative pressure hole; 17. Piston; 18. Suction cup; 19. Adjusting tube; 20. Weight. DETAILED DESCRIPTION

[0043] Three embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0044] Example 1

[0045] like Figures 1 to 11As shown, this embodiment provides a metal material corrosion and wear testing machine, which is designed to detect electrochemical signals while performing friction and wear tests on metal surfaces, and can accurately control the temperature during the test. The device mainly includes an electrochemical workstation, a constant potential instrument, a solution box 1, a fixing ring 2, a sample fixing ring 4, a guide plate 3, a dial 7, a sealing ring 8, a fixing plate 9, a pressure head 10, a reference electrode 12, a counter electrode 13, a high-temperature ceramic heating rod 14, a wire 15, a negative pressure hole 16, a piston 17, a force sensor, a temperature sensor and other key components.

[0046] A fixing ring 2 is fixedly connected to the center of the solution box 1, the top of the fixing ring 2 is a circular ring structure, the part of the solution box 1 located inside the circular ring and the outer end of the fixing ring 2 is fixedly connected to a guide plate 3, and the bottom end of the solution box 1 is fixedly connected to a reciprocating motion module for driving the solution box 1 and its internal components to move back and forth to achieve reciprocating motion of friction and wear testing.

[0047] A sample fixing ring 4 is provided inside the fixing ring 2, and the inner side of the sample fixing ring 4 is fixedly connected to a metal sample 6 by epoxy resin 5 to ensure that the sample is stable and motionless during the test. A dial 7 is fixedly connected to the top of the sample fixing ring 4, and the dial 7 is used to accurately locate the position of friction and wear.

[0048] A sealing ring 8 is clamped on the top of the circular ring structure of the solution box 1. The sealing ring 8 is made of elastic material and is used to provide a sealing function between the fixing plate 9 and the solution box 1 to prevent leakage of the liquid working medium.

[0049] The top of the sealing ring 8 is fixedly connected to a fixed plate 9, and the center of the fixed plate 9 is slidably connected to a pressure head 10, which is made of non-metallic material. A force sensor is provided on the top to measure friction, and a temperature sensor is fixedly connected to the bottom to monitor the temperature of the sample surface in real time.

[0050] The fixing plate 9 is connected to the reference electrode 12, the counter electrode 13, the high-temperature ceramic heating rod 14 and the wire 15 through the ball head 11. The metal sample 6 is electrically connected to the electrochemical workstation through the wire 15. The reference electrode 12 and the counter electrode 13 are also electrically connected to the electrochemical workstation. The high-temperature ceramic heating rod 14 is electrically connected to the constant potential instrument for adjusting the temperature of the liquid working medium.

[0051] The sample fixing ring 4 is provided with a plurality of negative pressure holes 16 along its axial direction, a partition is fixedly connected in the negative pressure hole 16, and the partition is slidably connected to a piston 17 in the negative pressure hole 16. The sample fixing ring 4 can be quickly fixed or released by moving the piston 17 up and down.

[0052] A plurality of stirring blocks are fixedly connected to the bottom end of the fixed plate 9. The stirring blocks stir the liquid working medium during the reciprocating motion to ensure that the heated liquid can transfer heat evenly.

[0053] Working process

[0054] Fixation and preparation of the sample: First, fix the metal sample 6 in the sample fixing ring 4 through the epoxy resin 5, and then place the sample fixing ring 4 into the fixing ring 2, press the piston 17 to compress the suction cup, and then release the piston 17 to generate negative pressure on the suction cup and adsorb it onto the solution box 1, thereby completing the rapid fixation of the sample.

[0055] Assembly and adjustment of the device: The combination of the fixing plate 9, the pressure head 10, the ball head 11, the reference electrode 12, the counter electrode 13, the high-temperature ceramic heating rod 14 and the wire 15 is installed as a whole on the solution box 1, and the accuracy of the test is ensured by adjusting the contact position between the pressure head 10 and the metal sample 6 and installing the weight 20 of the required weight.

[0056] Friction, wear and electrochemical test: Start the reciprocating motion module to drive the solution box 1 and its internal components (including the metal sample 6) to reciprocate. The bottom end of the pressure head 10 rubs and wears the surface of the metal sample 6. At the same time, the electrochemical signal is detected in real time through the reference electrode 12 and the counter electrode 13, and the liquid working medium is heated by the high-temperature ceramic heating rod 14 to ensure temperature stability during the entire test process.

[0057] Data collection and analysis, during the test, the force sensor measures the friction force in real time, and the temperature sensor monitors the temperature changes on the sample surface to ensure the accuracy and consistency of the data during the friction and wear process.

[0058] Accurate friction, wear and electrochemical testing. Since the device integrates an electrochemical workstation and a friction and wear module, it can obtain the electrochemical signals of the metal surface in real time while conducting friction and wear tests. The stability of the electrochemical signals is ensured by the arrangement of the reference electrode 12 and the counter electrode 13.

[0059] Temperature control and uniform heating, the high temperature ceramic heating rod 14 is used in conjunction with the constant potential instrument. Through the design of the stirring block, the liquid working medium is directed to flow on the guide plate 3 to achieve uniform heating, thereby ensuring the temperature control accuracy of the sample during the test.

[0060] Stable sample fixation: Through the design of the negative pressure hole and the piston, the sample fixing ring 4 can be quickly fixed in the solution box 1, ensuring the stability of the sample during the test, while simplifying the operation process of the device and improving work efficiency.

[0061] Real-time data monitoring: The force sensor and temperature sensor integrated on the pressure head 10 ensure real-time monitoring of friction and temperature, making the test data more accurate and providing a reliable basis for subsequent analysis.

[0062] This embodiment provides a metal material wear testing machine with compact structure, integrated functions and easy operation, which is particularly suitable for scenarios involving electrochemical signals and friction and wear testing.

[0063] Example 2

[0064] like Figures 1 to 11 As shown, based on Example 1, Example 2 further optimizes the fixing mechanism and adjustment function of the metal material wear testing machine to improve the stability of the device and the flexibility of operation. This embodiment improves the design of components such as the negative pressure hole 16, the suction cup 18, the piston 17, and the adjustment tube 19, making the device more convenient to use and able to adapt to different experimental conditions.

[0065] Improvement of negative pressure fixing mechanism

[0066] The bottom ends of the multiple negative pressure holes 16 are fixedly connected with suction cups 18. The suction cups 18 are made of elastic material and adopt a conical structure design. The end with a smaller diameter of the conical structure is arranged close to the sample fixing ring 4. This design ensures that the suction cups 18 can generate stronger negative pressure during adsorption, thereby ensuring the stability of the sample fixing ring 4.

[0067] A groove matching the suction cup 18 is provided at the corresponding position of the fixing ring 2 and the suction cup 18, and a through hole is provided at the bottom end of the fixing ring 2 corresponding to the suction cup 18. This design ensures the precise matching of the suction cup 18 and the fixing ring 2, making the negative pressure fixation more stable.

[0068] Improved piston and spring structure

[0069] The piston 17 includes a lower piston, the top of which is fixedly connected to a connecting column, the top of which is fixedly connected to a pressing column, the partition in the negative pressure hole 16 is slidably connected to the connecting column, and a conical spring is fixedly connected between the top of the partition and the pressing column. This structural design ensures that the piston 17 can automatically return to its original position after pressure is applied, and quickly reset after the suction cup 18 releases the negative pressure, thereby improving the efficiency of the operation.

[0070] Optimization of adjustment and positioning mechanisms

[0071] A plurality of adjusting tubes 19 are slidably connected to the fixed plate 9. The adjusting tubes 19 are arranged parallel to the axial direction of the pressure head 10. The outer ends of the adjusting tubes 19 are located at the top and bottom ends of the fixed plate 9 and are threadedly connected with adjusting nuts. The height and position of the pressure head 10 can be accurately controlled by adjusting the nuts. A guide column is slidably connected to the inner wall of the adjusting tube 19, and the bottom end of the guide column is connected to the fixed part at the top of the reciprocating motion module.

[0072] A boss is provided on the outer wall of the indenter 10 at the top of the fixing plate 9, and a plurality of weights 20 are provided on the top of the boss for adjusting the pressure applied by the indenter 10 on the metal sample 6 during the test to ensure the controllability of the experimental conditions.

[0073] Improved guidance and particle handling

[0074] The guide plate 3 includes a plurality of guide blocks, and a top edge of the guide block is provided with an angled edge for guiding the liquid working medium to ensure that the liquid medium flows more smoothly in the solution box 1 .

[0075] A groove is provided between the guide plate 3 and the sample fixing ring 4 to accommodate particles generated after the metal sample 6 is worn, so as to prevent the particles from being scattered in the liquid medium and affecting the results of the electrochemical test.

[0076] Working process

[0077] Quick fixation of the sample: After the metal sample 6 is fixed in the sample fixing ring 4, the piston 17 is pressed to compress the suction cup 18 and adsorb it onto the solution box 1. Since the suction cup 18 adopts a conical design, the adsorption is more firm, ensuring the stability of the sample during the entire test process.

[0078] Adjustment of the device: After the device is assembled, the height of the adjusting tube 19 is adjusted by adjusting the nut to accurately control the distance and contact pressure between the pressure head 10 and the metal sample 6. The pressure applied during the test can be further adjusted by adding or removing the weight 20 at the top of the pressure head 10.

[0079] Friction, wear and electrochemical test: Start the reciprocating motion module to make the solution box 1 and its internal components reciprocate. Through the improvement of the negative pressure fixing mechanism, the sample fixing ring 4 remains stable during the reciprocating motion. At the same time, the guide plate 3 ensures the smooth flow of the liquid medium, so that the high-temperature ceramic heating rod 14 can evenly heat the liquid medium and maintain the stability of the test environment.

[0080] Processing of particles: During the friction and wear process, the particles generated on the surface of the metal sample 6 will be collected by the groove between the guide plate 3 and the sample fixing ring 4, preventing the particles from entering the electrochemical test area and ensuring the accuracy of the test data.

[0081] Enhanced fixing stability: Through the structural optimization of the negative pressure hole 16, the suction cup 18 and the piston 17, the sample fixing ring 4 is more stable during the test, ensuring the reliability of the experimental data.

[0082] The precise adjustment function, the design of the adjustment tube 19 and the adjustment nut enable the position and pressure of the pressure head 10 to be precisely controlled to meet different experimental requirements and improve the flexibility of the test.

[0083] Effective particle processing: The groove design between the guide plate 3 and the sample fixing ring 4 effectively collects the particles generated during the friction and wear process, avoiding the interference of the particles on the electrochemical test.

[0084] Improved liquid medium flow and heating, the angled design of the guide plate 3 ensures that the liquid medium flows more smoothly in the solution box 1, and cooperates with the high-temperature ceramic heating rod 14 to achieve uniform heating and maintain the stability of the test environment.

[0085] Through these improvements, Example 2 further improves the convenience of operation of the metal material wear testing machine and the accuracy of experimental data, and is suitable for more complex experimental scenarios.

[0086] Example 3

[0087] like Figures 1 to 11 As shown, based on Example 1 and Example 2, this embodiment further describes in detail the use method and operation steps of the metal material wear testing machine, and achieves efficient and stable operation of the device by optimizing the execution process of each step. This embodiment not only covers the structural characteristics of the device, but also emphasizes the specific operation process of the device in actual use, ensuring the accuracy of the test results and the stability of the data.

[0088] Working process

[0089] Fixing and preparation of metal specimens (S1):

[0090] First, the metal sample 6 is fixed in the sample fixing ring 4 by means of the epoxy resin 5 . The epoxy resin 5 ensures the stability of the metal sample 6 during the test and avoids interference from external factors.

[0091] Next, place the sample fixing ring 4 into the fixing ring 2, compress the suction cup 18 by pressing the piston 17, and then release the piston 17, so that the suction cup 18 is adsorbed upward onto the solution box 1 to achieve rapid fixation of the sample. The suction cup 18 adopts a conical structure design to ensure the firmness and stability of the adsorption, providing a strong fixing effect.

[0092] Assembly and adjustment of the device (S2):

[0093] The fixed plate 9, the pressure head 10, the ball head 11, the reference electrode 12, the counter electrode 13, the high-temperature ceramic heating rod 14, the wire 15 and the adjusting tube 19 are assembled as a whole and are sleeved on the outside of the guide column through the adjusting tube 19 until the bottom end of the pressure head 10 contacts the top end of the metal sample 6 to ensure that the pressure head 10 can apply pressure evenly.

[0094] Next, a weight 20 of the required weight is installed on the top of the pressure head 10, and the heights of the reference electrode 12, the counter electrode 13, the high-temperature ceramic heating rod 14, the wire 15, the stirring block and the top of the guide plate 3 are adjusted by adjusting the nut. This process ensures that all components are in the best working condition and can be flexibly adjusted according to test requirements.

[0095] Friction, wear and electrochemical test start (S3, S4):

[0096] The reciprocating motion module is started to make the solution box 1 and its internal components (including the metal sample 6) reciprocate. During this process, the bottom end of the pressure head 10 evenly grinds the metal sample 6 to simulate the friction and wear process under actual working conditions.

[0097] At the same time, the reference electrode 12 and the counter electrode 13 perform real-time detection of electrochemical signals through an electrochemical workstation to obtain electrochemical data on the surface of the metal sample 6, which will be used to analyze the chemical changes that occur in the sample during the friction and wear process.

[0098] Heating and circulation of liquid medium (S5):

[0099] The high-temperature ceramic heating rod 14 heats the liquid working medium. Through the action of the guide plate 3 and the stirring block, the liquid working medium circulates in the solution box 1. The guide block design of the guide plate 3 ensures the directionality and stability of the flow of the liquid medium, and the stirring block enhances the mixing effect of the liquid, making the heating more uniform.

[0100] The particles generated by the metal sample 6 during the friction and wear process will be collected by the groove between the guide plate 3 and the sample fixing ring 4, which effectively avoids the interference of the particles on the electrochemical test and keeps the test environment clean and the data accurate.

[0101] Adjustments during testing (S6):

[0102] During the test, the angles and heights of the reference electrode 12, the counter electrode 13 and the high-temperature ceramic heating rod 14 can be adjusted at any time according to the real-time monitored electrochemical signals and friction data. By rotating the ball head 11, the positions of these components can be precisely controlled to ensure data stability and accuracy during the test.

[0103] When in use, the metal sample 6 is fixed to the top of the sample fixing ring 4 by epoxy resin 5, and then the sample fixing ring 4 is placed in the fixing ring 2, and then the sample fixing ring 4 and the piston 17 are pressed downward to compress the suction cup 18, and then the piston 17 is released, and the piston 17 moves upward to make the suction cup 18 adsorbed on the solution box 1 to achieve rapid fixation;

[0104] Then, the whole consisting of the fixing plate 9, the pressure head 10, the ball head 11, the reference electrode 12, the counter electrode 13, the high-temperature ceramic heating rod 14, the wire 15 and the adjusting tube 19 is sleeved on the outside of the guide column by using the adjusting tube 19 until the bottom end of the pressure head 10 contacts the top end of the metal sample 6, and then a weight 20 of the required weight is installed on the top end of the pressure head 10, and then the height of the reference electrode 12, the counter electrode 13, the high-temperature ceramic heating rod 14, the wire 15 and the stirring block and the top end of the guide plate 3 is adjusted by adjusting the nut, and then the test can be started;

[0105] The reciprocating module drives the solution box 1, the fixing ring 2, the guide plate 3, the sample fixing ring 4, the epoxy resin 5 and the metal sample 6 to move back and forth. During this process, the bottom end of the pressure head 10 grinds the top of the metal sample 6, and at the same time, the reference electrode 12 and the counter electrode 13 are used for detection, and the liquid working medium is heated by the high-temperature ceramic heating rod 14. During the test, the particles generated by the wear of the metal sample 6 fall into the groove provided between the guide plate 3 and the sample fixing ring 4. At the same time, multiple stirring blocks block and stir the liquid working medium during the reciprocating movement of the guide plate 3. Under the action of the stirring blocks and the guide plate 3, the liquid working medium moves in a directional manner at the top of the guide plate 3, realizing the circulation of the liquid working medium, so that the heat of the high-temperature ceramic heating rod 14 can be evenly distributed to the liquid working medium;

[0106] If the angles of the reference electrode 12 , the counter electrode 13 and the high-temperature ceramic heating rod 14 need to be adjusted during use, the corresponding ball heads 11 can be rotated.

[0107] Efficient sample fixation: Through the synergistic effect of the suction cup 18 and the piston 17, the sample fixation process is fast and stable, which significantly improves the efficiency of test preparation and reduces the risk of sample displacement during the test.

[0108] Precise operation adjustment, the design of the adjustment tube 19 and the adjustment nut enable the device to be flexibly adjusted according to different experimental requirements, ensuring the accuracy of each test, especially in the pressure adjustment of the pressure head 10 and the angle control of the electrode, achieving efficient operation.

[0109] Reliable electrochemical and friction and wear synchronous testing, through the close combination of the reference electrode 12, the counter electrode 13 and the friction and wear process, can obtain electrochemical signals and friction data in real time, comprehensively analyze the behavior of the metal sample 6 in friction and wear, and improve the comprehensiveness of the experimental results.

[0110] Uniform heating and circulation of the liquid medium, the high temperature ceramic heating rod 14 cooperates with the design of the guide plate 3 and the stirring block to achieve uniform heating of the liquid medium, avoid test errors caused by uneven temperature, and ensure the temperature stability of the sample surface.

[0111] Real-time adjustment and optimization: During the test, the angle and height of key components can be adjusted at any time according to actual conditions, ensuring the flexibility and accuracy of the test, allowing the device to adapt to different experimental scenarios and needs.

[0112] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A metal material corrosion and wear testing machine, characterized in that: The invention comprises an electrochemical workstation, a constant potential instrument and a solution box (1), wherein a fixing ring (2) is fixedly connected to the center of the solution box (1), the top of the fixing ring (2) is a circular ring structure, a guide plate (3) is fixedly connected to the part of the solution box (1) located inside the circular ring and outside the fixing ring (2), a sample fixing ring (4) is provided inside the fixing ring (2), a metal sample (6) is fixedly connected to the sample fixing ring (4) via epoxy resin (5), a dial (7) is fixedly connected to the top of the sample fixing ring (4), a sealing ring (8) is clamped to the top of the circular ring structure of the solution box (1), the sealing ring (8) is made of elastic material, and the top of the sealing ring (8) is fixedly connected to A fixed plate (9) is connected, a pressure head (10) is slidably connected to the center of the fixed plate (9), the ball head of the fixed plate (9) is connected to four ball heads (11), the four ball heads (11) are respectively fixedly connected to a reference electrode (12), a counter electrode (13), a high-temperature ceramic heating rod (14) and a wire (15), the metal sample (6) is electrically connected to the electrochemical workstation through the wire (15), the reference electrode (12) and the counter electrode (13) are both electrically connected to the electrochemical workstation, the fixed ring (2) is filled with a liquid working medium, a reciprocating module is fixedly connected to the bottom end of the solution box (1), and the high-temperature ceramic heating rod (14) is electrically connected to a constant potential instrument; The sample fixing ring (4) is provided with a plurality of negative pressure holes (16) along its axial direction, a partition is fixedly connected to each of the plurality of negative pressure holes (16), a piston (17) is slidably connected to the negative pressure hole (16), and the pressure head (10) is made of a non-metallic material; The bottom ends of the plurality of negative pressure holes (16) are all fixedly connected to a suction cup (18), the suction cup (18) being made of an elastic material, the suction cup (18) being a conical structure, and the end of the conical structure with a smaller diameter being arranged close to the sample fixing ring (4); A groove matching the suction cup (18) is provided at a position corresponding to the fixing ring (2) and the suction cup (18), and a through hole is provided at a position corresponding to the suction cup (18) at the bottom end of the fixing ring (2); The piston (17) comprises a lower piston, the top of the lower piston is fixedly connected to a connecting column, the top of the connecting column is fixedly connected to a pressing column, the inner partition of the negative pressure hole (16) is slidably connected to the connecting column, a spring is fixedly connected between the top of the partition and the pressing column, and the spring is a conical spring; The partition plate in the negative pressure hole (16) is provided with a through hole along the axial direction of the negative pressure hole (16); a plurality of regulating tubes (19) are slidably connected to the fixed plate (9); and the plurality of regulating tubes (19) are arranged parallel to the axial direction of the pressure head (10); The outer ends of the adjusting tube (19) located at the top and bottom of the fixing plate (9) are both threadedly connected with adjusting nuts, and the outer wall of the pressure head (10) located at the top of the fixing plate (9) is provided with a boss, and the top of the boss is provided with a plurality of weights (20); The inner wall of the regulating tube (19) is slidably connected to a guide column, and the bottom end of the guide column is connected to the fixed portion at the top of the reciprocating module. The guide plate (3) includes a plurality of guide blocks, and an edge at the top of the guide block is provided with an angle for guiding the liquid working medium. A groove is provided between the guide plate (3) and the sample fixing ring (4) for accommodating particles generated after the metal sample (6) is worn.

2. A metal material corrosion and wear testing machine according to claim 1, characterized in that: The pressure head (10) is provided with a force sensor for measuring the friction force, the bottom end of the pressure head (10) is fixedly connected to a temperature sensor, and the bottom end of the fixed plate (9) is fixedly connected to a plurality of stirring blocks.

3. A metal material corrosion and wear testing machine according to any one of claims 1-2, characterized in that: How to use it The steps include: S1: fix the metal sample (6) in the sample fixing ring (4) by epoxy resin (5), place the sample fixing ring (4) in the fixing ring (2), compress the suction cup (18) by pressing the piston (17), and then release the piston (17) to allow the suction cup (18) to be adsorbed onto the solution box (1), thereby achieving rapid fixation of the sample; S2: The fixed plate (9), the pressure head (10), the ball head (11), the reference electrode (12), the counter electrode (13), the high temperature ceramic heating rod (14), the wire (15) and the adjusting tube (19) are assembled as a whole, and the adjusting tube (19) is sleeved on the outside of the guide column until the bottom end of the pressure head (10) contacts the top end of the metal sample (6), and a weight (20) of the required weight is installed on the top end of the pressure head (10); S3: adjusting the height of the reference electrode (12), the counter electrode (13), the high-temperature ceramic heating rod (14), the wire (15), the stirring block and the top of the guide plate (3) by adjusting the nut, and adjusting the angle of the ball head (11) to set the optimal working angle of the reference electrode (12), the counter electrode (13) and the high-temperature ceramic heating rod (14); S4: starting the reciprocating motion module to make the solution box (1) and its internal components reciprocate, the friction and wear process begins, the bottom end of the indenter (10) grinds the metal sample (6), and at the same time, the electrochemical signal is detected in real time through the reference electrode (12) and the counter electrode (13); S5: The high-temperature ceramic heating rod (14) heats the liquid working medium, and the liquid working medium is circulated through the guide plate (3) and the stirring block to evenly distribute the heat, while collecting the worn particles of the metal sample (6) into the groove between the guide plate (3) and the sample fixing ring (4); S6: During the test, the angles and heights of the reference electrode (12), the counter electrode (13) and the high-temperature ceramic heating rod (14) are adjusted at any time as needed to ensure the test accuracy and data stability.

Images