A press-in type material mechanical property testing device

Abstract

This application belongs to the field of materials mechanics testing technology and discloses an indentation-type materials mechanical property testing device, including a base, support frame, crossbeam, sealed box, circulation pump, electrode controller, moving plate, pressure plate, and main controller. A cylinder is installed on the top of the crossbeam, and the cylinder's extension rod passes downward through the crossbeam. A sealed box is located on the base below the crossbeam, and the top of the sealed box has a moving channel for the cylinder extension rod to pass through. The sealed box has a receiving platform for placing experimental samples. The sealed box is connected to the circulation pump, which forms a water circulation loop within the sealed box. A heating working electrode is installed on the sealed box. The main controller is electrically connected to the drive motor, cylinder, and circulation pump. This application can effectively ensure a high-temperature and high-pressure state in the water environment during testing, can monitor the temperature and pressure of the internal water environment in real time, and can control the cylinder extension rod to compress the experimental sample.

Description

Technical Field

[0001] This application belongs to the field of materials mechanics testing technology, and in particular relates to an indentation-type material mechanical property testing device. Background Technology

[0002] The mechanical properties of a material refer to the mechanical characteristics exhibited by the material under various external loads in different environments (temperature, medium, humidity). Among them, the material's ability to resist local deformation, especially plastic deformation, indentation or scratch, is an important indicator for measuring the quality of the material's mechanical properties.

[0003] Currently, indentation-type material mechanics testing devices are commonly used. These devices are convenient to use, allow for quick indentation, and can rapidly reflect the basic mechanical properties of materials. However, most of these testing devices operate at ambient temperature and pressure, and cannot realistically simulate the testing of materials that need to serve in extreme environments, such as nuclear power metal materials that need to serve in high-temperature, high-pressure water environments. Summary of the Invention

[0004] The purpose of this application is to overcome the shortcomings of the prior art and provide an indentation-type material mechanical property testing device that can simulate extreme environments and perform indentation-type mechanical property testing.

[0005] To achieve the above objectives, this application provides the following technical solution: An indentation-type material mechanical property testing device includes a base with two support frames rotatably connected between them. A drive motor for rotating the threaded rod is located at the top of each support frame. A crossbeam is threaded onto the threaded rod, and a cylinder is mounted on the top of the crossbeam. The cylinder's extension rod passes downward through the crossbeam. A sealed box is located below the crossbeam on the base. A moving channel for the cylinder's extension rod to pass through is opened at the top of the sealed box. A receiving platform for placing experimental samples is located inside the sealed box. A circulation pump is connected to the sealed box to form a water circulation loop within the sealed box. A heating working electrode is mounted on the sealed box. A master controller is located on the base and is electrically connected to the drive motor, the cylinder, and the circulation pump.

[0006] In some embodiments, the device further includes an electrode controller, wherein the wiring portion of the heating working electrode is located outside the sealed housing and electrically connected to the electrode controller, and the electrode controller is electrically connected to the master controller.

[0007] In some embodiments, the circulating pump is connected to the sealed box through two circulating pipes to form the water circulation loop, and one of the circulating pipes is equipped with a water pressure sensor for real-time monitoring of the internal water pressure.

[0008] In some embodiments, the contact portions of the circulation tube, the heating working electrode, and the electronic thermometer with the sealed box are all provided with sealing O-rings.

[0009] In some embodiments, a movable plate is provided at the bottom of the cylinder telescopic rod, the movable plate is slidably fitted in the movable channel, a pressure plate is connected to the lower side of the movable plate via the telescopic rod, and a pressure rod for squeezing the experimental sample is connected to the lower side of the pressure plate.

[0010] In some embodiments, a pressure sensor is provided on the underside of the movable plate, and a spring is sleeved on the outer side of the telescopic rod.

[0011] In some embodiments, the pressure sensor is wirelessly connected to the central controller, which displays the readings of the pressure sensor.

[0012] In some embodiments, an electronic thermometer is provided on the top of the sealed box, the measuring part of the electronic thermometer is located inside the sealed box, and the electronic thermometer is signal-connected to the master controller.

[0013] In some embodiments, the front side of the sealed box is provided with a sealing switch door for opening or closing the sealed box.

[0014] In some embodiments, two drive motors are respectively disposed on the top of the two support frames for synchronously driving the threaded rods on both sides to rotate.

[0015] Compared with the prior art, the indentation-type material mechanical property testing device provided in this application has the following advantages: This application can effectively ensure the high temperature and high pressure of the water environment during testing, can monitor the temperature and pressure of the internal water environment in real time, and can control the cylinder extension rod to squeeze the experimental sample.

[0016] The sealed chamber provided in this application is used to simulate extreme environments. Water can be injected into the sealed chamber through a circulation pump, which can ensure the water pressure of the water circulation system, thereby ensuring the internal pressure of the water. The water environment can be heated by heating the working electrode, thereby providing high-temperature regulation of the water environment. The sealed chamber is always in a sealed state, which can effectively ensure the high temperature and high pressure state of the water environment during testing, and can simulate the service conditions of metal under extreme conditions.

[0017] This application controls the up-and-down movement of the crossbeam by simultaneously driving two drive motors, and performs a compression test on the experimental sample by controlling the extension rod of the cylinder. At the same time, all electrical components of this application are integrated and controlled by a central controller, making operation more convenient.

[0018] Furthermore, this application also includes an electronic thermometer and a water pressure sensor, which can monitor the temperature and pressure of the internal water environment in real time. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the technical description will be briefly introduced below.

[0020] Figure 1 A schematic diagram of the structure of the indentation-type material mechanical property testing device provided in this application; Figure 2 A cross-sectional view of the indentation-type material mechanical property testing device provided in this application; Figure 3 This is an enlarged cross-sectional view of the movable plate provided in this application.

[0021] Explanation of reference numerals in the attached figures: 1. Base; 2. Support frame; 3. Crossbeam; 4. Sealing box; 5. Circulating pump; 6. Electrode controller; 7. Moving plate; 8. Pressure plate; 9. Main controller; 21. Threaded rod; 22. Drive motor; 31. Cylinder; 32. Cylinder extension rod; 41. Moving passage; 42. Sealed opening and closing door; 43. Receiving platform; 51. Circulation pipe; 52. Water pressure sensor; 61. Heating the working electrode; 71. Pressure sensor; 72. Telescopic rod; 81. Compression bar. Detailed Implementation

[0022] The following detailed description provides further details on specific implementation methods.

[0023] like Figures 1 to 3 As shown, this application provides an indentation-type material mechanical property testing device, including a base 1, a support frame 2, a crossbeam 3, a sealed box 4, a circulating pump 5, an electrode controller 6, a moving plate 7, a pressure plate 8, and a central controller 9.

[0024] Two support frames 2 are provided on the upper side of the base 1. A threaded rod 21 is rotatably connected inside the support frame 2. The top of the threaded rod 21 passes through the top of the support frame 2 and is connected to a drive motor 22. The drive motor 22 is used to drive the threaded rod 21 to rotate.

[0025] A crossbeam 3 is provided between the two support frames 2, and the two ends of the crossbeam 3 are threadedly connected to the threaded rods 21 on both sides. A cylinder 31 is connected to the top of the crossbeam 3, and a cylinder telescopic rod 32 is coaxially connected to the cylinder 31. The cylinder telescopic rod 32 is connected to the lower side of the crossbeam 3, and the cylinder 31 is used to drive the cylinder telescopic rod 32 to extend and retract.

[0026] A sealed box 4 is connected between the two support frames 2 and on top of the base 1. The top of the sealed box 4 is connected to a moving channel 41, which connects the inside of the sealed box 4 to the outside. A sealed switch door 42 is provided on the front side of the sealed box 4, which can be used to open and close the sealed box 4. A receiving platform 43 is connected to the center of the inside of the sealed box 4, which is used to place experimental samples.

[0027] like Figure 1 and Figure 2 As shown, a circulation pump 5 is arranged on the left side of the sealed box 4, and an electrode controller 6 is arranged on the right side of the sealed box 4.

[0028] The sealed box 4 is connected to the circulating pump 5 through two circulation pipes 51. The circulating pump 5, the circulation pipes 51 and the sealed box 4 are connected to form a water circulation loop. A water pressure sensor 52 is installed on one of the circulation pipes 51. The water pressure sensor 52 is used to monitor the current internal water pressure in real time.

[0029] The sealed box 4 is provided with several heating working electrodes 61. The heating electrode part of the heating working electrode 61 is located inside the sealed box 4, and the connecting part of the heating working electrode 61 is located outside the sealed box 4 and is electrically connected to the electrode controller 6. The heating working electrode 61 is controlled by the electrode controller 6.

[0030] An electronic thermometer 44 is installed on the top of the sealed box 4. The measuring part of the electronic thermometer 44 is located inside the sealed box 4, and the display part of the electronic thermometer 44 is located on the outside of the sealed box 4.

[0031] like Figure 2 and Figure 3 As shown, a movable plate 7 is fixedly connected to the bottom of the cylinder telescopic rod 32. The movable plate 7 is slidably fitted within the moving channel 41, and a pressure sensor 71 is located at the center of its lower side. The lower side of the movable plate 7 is connected to the pressure plate 8 via the telescopic rod 72. A spring is sleeved on the outer side of the telescopic rod 72, and a pressure rod 81 is connected to the lower side of the pressure plate 8. The pressure rod 81 is used to perform a compression test on the experimental sample. The function of the telescopic rod 72 is to transmit the pressure received from the upper movable plate 7 (originating from the downward pressure of the cylinder telescopic rod 32) to the lower pressure plate 8 and pressure rod 81 to buffer the impact, maintain stable pressure, and adapt to minor unevenness on the sample surface.

[0032] A master controller 9 is installed on the base 1. The master controller 9 is used to control the drive motor 22, cylinder 31 and circulating pump 5 and to display the reading of pressure sensor 71.

[0033] The drive motor 22, cylinder 31, circulating pump 5 and electrode controller 6 in this device are all electrically connected to the main controller 9, so that the main controller 9 can control the drive motor 22, cylinder 31, circulating pump 5 and heating working electrode 61.

[0034] The readings of the pressure sensor 71, water pressure sensor 52, and electronic thermometer 44 in this device can all be wirelessly transmitted to the central controller 9, and the readings can be displayed by the central controller 9, which is located on the far right of the base 1.

[0035] Preferably, the contact portions of the circulation tube 51, the heating working electrode 61, and the electronic thermometer 44 with the sealing box 4 are all provided with sealing O-rings.

[0036] The specific implementation process of this device is as follows: First, open the sealing switch door 42 and place the experimental sample on the receiving platform 43. The control controller 9 controls the drive motors 22 on both sides to start simultaneously. The threaded rod 21 rotates, causing the crossbeam 3 to move up and down. The up and down movement of the crossbeam 3 causes the bottom of the pressure rod 81 to abut against the top of the experimental sample, completing the initial fixation of the experimental sample.

[0037] Then, close the sealing switch door 42, open the inlet pipe of the circulation pump 5 to inject water, and after filling the sealed box 4 with water, open the outlet pipe of the circulation pump 5 to pump water, control the working efficiency of the outlet pipe and the inlet pipe to be the same, and form a circulating water loop with the circulation pump 5, the circulation pipe 51 and the sealed box 4, and the water pressure sensor 52 monitors the internal water pressure in real time.

[0038] Heating is initiated by turning on the heating working electrode 61. During the heating process of the aqueous solution, the water pressure gradually increases. The internal temperature is monitored in real time by the electronic thermometer 44. While observing the electronic thermometer 44 and the water pressure sensor 52, the circulation pump 5 and the heating working electrode 61 are controlled to make the internal water environment reach a high temperature and high pressure state. Then, the cylinder extension rod 32 can be controlled to press down the pressure rod 81 to test the mechanical properties of the experimental sample.

[0039] The above description is only a specific embodiment of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A press-in material mechanical property testing device, characterized by, The system includes a base (1), on which two support frames (2) are provided. A threaded rod (21) is rotatably connected between the two support frames (2). A drive motor (22) for driving the threaded rod (21) to rotate is provided on the top of the support frame (2). A crossbeam (3) is threadedly connected to the threaded rod (21). A cylinder (31) is installed on the top of the crossbeam (3). The cylinder extension rod (32) of the cylinder (31) passes downward through the crossbeam (3). A sealing box (4) is provided on the base (1) below the crossbeam (3). (4) A moving channel (41) is provided at the top for the cylinder telescopic rod (32) to pass through. The sealed box (4) is provided with a receiving platform (43) for placing experimental samples. The sealed box (4) is connected to a circulation pump (5). The circulation pump (5) is used to form a water circulation loop in the sealed box (4). A heating working electrode (61) is installed on the sealed box (4). A master controller (9) is provided on the base (1). The master controller (9) is electrically connected to the drive motor (22), the cylinder (31) and the circulation pump (5).

2. The press-in material mechanical property testing device of claim 1, wherein, The device also includes an electrode controller (6), the wiring portion of the heating working electrode (61) is located outside the sealed box (4) and electrically connected to the electrode controller (6), and the electrode controller (6) is electrically connected to the main controller (9).

3. The indentation-type material mechanical property testing device according to claim 1, characterized in that, The circulating pump (5) is connected to the sealed box (4) through two circulating pipes (51) to form the water circulation loop. One of the circulating pipes (51) is equipped with a water pressure sensor (52) for real-time monitoring of the internal water pressure.

4. The indentation-type material mechanical property testing device according to claim 3, characterized in that, The contact portions of the circulation tube (51), the heating working electrode (61), and the electronic thermometer (44) with the sealing box (4) are all provided with sealing O-rings.

5. The indentation-type material mechanical property testing device according to claim 1, characterized in that, The bottom of the cylinder telescopic rod (32) is provided with a movable plate (7), which is slidably attached to the movable channel (41). The lower side of the movable plate (7) is connected to a pressure plate (8) through the telescopic rod (72), and the lower side of the pressure plate (8) is connected to a pressure rod (81) for squeezing the experimental sample.

6. The indentation-type material mechanical property testing device according to claim 5, characterized in that, A pressure sensor (71) is provided on the lower side of the movable plate (7), and a spring is sleeved on the outer side of the telescopic rod (72).

7. The indentation-type material mechanical property testing device according to claim 5, characterized in that, The pressure sensor (71) is wirelessly connected to the master controller (9), which is used to display the reading of the pressure sensor (71).

8. The indentation-type material mechanical property testing device according to claim 1, characterized in that, An electronic thermometer (44) is provided on the top of the sealed box (4). The measuring part of the electronic thermometer (44) is located inside the sealed box (4). The electronic thermometer (44) is connected to the main controller (9) via signal.

9. The indentation-type material mechanical property testing device according to claim 1, characterized in that, The front side of the sealed box (4) is provided with a sealing switch door (42) for opening or closing the sealed box (4).

10. The indentation-type material mechanical property testing device according to claim 1, characterized in that, The two drive motors (22) are respectively mounted on the top of the two support frames (2) for synchronously driving the threaded rods (21) on both sides to rotate.

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