Corrosion resistance testing device for reinforcing steel bar

Abstract

The utility model discloses a device for testing the corrosion resistance of a reinforcing steel bar. The device comprises a test bed, a control panel is fixedly mounted on the front surface of the test bed, a plurality of environment simulation mechanisms are mounted at the top of the test bed, clamping mechanisms are mounted in the environment simulation mechanisms, and a stress loading mechanism is arranged on one side of each environment simulation mechanism; the clamping mechanism comprises a clamping body, the inner wall of the clamping body is connected with a limiting piece and a bottom supporting plate, the limiting piece and the bottom supporting plate are sleeved with a limiting plate, and the limiting piece is in threaded connection with a first lead screw. The device has the advantage of simulating actual working conditions, and solves the problems that stress is inconvenient to apply to the detected reinforcing steel bar, the corrosion effect of the reinforcing steel bar under the actual use condition is difficult to reflect and accurate evaluation of the corrosion resistance of the reinforcing steel bar is hindered in the use process of the existing device for testing the corrosion resistance of the reinforcing steel bar.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar detection, in particular to a corrosion resistance performance testing device for steel bars. Background Art

[0002] When evaluating the durability of steel bars, it is necessary to test the corrosion resistance of the steel bars. The corrosion resistance test device of steel bars is usually used to test the corrosion resistance of steel bars under different environmental conditions. The test device simulates the immersion corrosion conditions in a humid environment, immerses the steel bars in a specific liquid (such as salt water or acid solution), and observes and measures its corrosion conditions for a certain period of time. The steel bars will be subjected to stress deformation during use, so when simulating the real environment, whether the steel bars are subjected to stress will affect the corrosion effect. Some high-yield strength steels may lead to higher corrosion sensitivity due to stress-induced stress corrosion cracking between grains. Stress can cause defects, cracks or dislocations to appear on the surface of the steel bars, thereby accelerating the entry of corrosive media into the steel bars and increasing the corrosion rate.

[0003] During use, the existing steel bar corrosion resistance test device is not convenient for applying stress to the steel bar being tested, and it is difficult to reflect the corrosion effect of the steel bar under actual use conditions, which hinders the accurate evaluation of the steel bar's corrosion resistance. Utility Model Content

[0004] The utility model aims to provide a steel bar corrosion resistance test device, which has the advantage of simulating actual working conditions and solves the problem that the existing steel bar corrosion resistance test device is inconvenient to apply stress to the steel bar being tested during use, and it is difficult to reflect the corrosion effect of the steel bar under actual use conditions, which hinders the accurate evaluation of the steel bar corrosion resistance.

[0005] To achieve the above object, the utility model provides the following technical solutions: a corrosion resistance test device for steel bars, comprising a test bench, a control panel is fixedly installed on the front of the test bench, a plurality of environmental simulation mechanisms are installed on the top of the test bench, a clamping mechanism is installed inside the environmental simulation mechanism, and a stress loading mechanism is provided on one side of the environmental simulation mechanism;

[0006] The clamping mechanism comprises a clamping body, the inner wall of the clamping body is respectively connected to a limit piece and a bottom support plate, the limit piece and the bottom support plate are sleeved with a limit plate, the limit piece is threadedly connected to a first screw rod, the bottom of the first screw rod is rotatably connected to a clamp, the limit plate is threadedly connected to a second screw rod, and the second screw rod is rotatably connected to the rear side of the clamping body;

[0007] The stress loading mechanism comprises a plate body, a hydraulic cylinder is fixedly mounted on the top of the plate body, a piston rod of the hydraulic cylinder is connected to a movable plate, a pressure sensor is fixedly mounted on one side of the movable plate, and one end of the pressure sensor is connected to a mounting sleeve.

[0008] As a preferred device for testing the corrosion resistance of steel bars of the utility model, the environmental simulation mechanism comprises a corrosion liquid containing box, a sealing sleeve is installed on the surface of the corrosion liquid containing box, and the installation sleeve is located in the inner cavity of the sealing sleeve and movably connected to its inner wall.

[0009] As a preferred embodiment of the corrosion resistance test device for steel bars of the utility model, an arc-shaped seat for supporting the steel bars is fixedly connected to the inner wall of the corrosion liquid containing box.

[0010] As a preferred embodiment of the corrosion resistance test device of a steel bar of the utility model, the first screw rod and the second screw rod are connected with a hand wheel, and the clamp surface is movably connected to the inner wall of the clamping body.

[0011] As a preferred embodiment of the corrosion resistance testing device for steel bars of the utility model, one end of the installation sleeve is provided with an installation hole for installing the steel bars.

[0012] As a preferred embodiment of the corrosion resistance testing device for steel bars of the utility model, a slide bar is provided on the top of the plate body, and the slide bar is movably connected to the movable plate and the mounting sleeve.

[0013] As a preferred embodiment of the corrosion resistance testing device for steel bars of the utility model, the control panel is provided with a display screen and control buttons respectively.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model can simulate the corrosion environment of steel bars by setting an environmental simulation mechanism. The corrosive liquid is placed inside the corrosive liquid storage box, and the arc seat supports the top of the steel bar. The corrosive liquid contacts the surface of the steel bar to corrode the steel bar. The staff tests the corrosion resistance of the steel bar according to the corrosion effect.

[0016] 2. The utility model can clamp and fix the steel bars by setting a clamping mechanism to prevent the steel bars from escaping from the corrosive liquid storage box when subjected to stress. The steel bars are placed on the top of the bottom support plate, and the bottom support plate firmly supports the bottom of the steel bars. The first screw rod is rotated, and the first screw rod drives the clamp to move downward to clamp and fix the top of the steel bars. The second screw rod is rotated, and the second screw rod drives the limit plate to move on the surface of the bottom support plate and the limit member to limit the steel bars.

[0017] 3. The utility model can apply stress to the steel bar to make it slightly deformed by arranging a stress loading mechanism. By applying slight stress, the stress to which the steel bar is subjected under actual use conditions can be better simulated, which can more realistically evaluate the corrosion resistance of the steel bar in a complex stress environment. A certain degree of stress will cause tiny cracks, dislocations and other defects on the surface of the steel bar, making it easier for the corrosive medium to penetrate into the steel bar, which can accelerate the corrosion process, improve the sensitivity and effectiveness of detection, and form a richer and more complex surface morphology during the corrosion process, which helps to more comprehensively observe and understand the corrosion behavior of the steel bar. For specific engineering applications, it may be more valuable to understand the corrosion resistance of the steel bar under applied stress, and the durability and reliability of the steel bar in the actual engineering environment can be more accurately evaluated. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main axonometric drawing of the utility model;

[0019] Figure 2 This is the main axonometric view of the environmental simulation mechanism of the utility model;

[0020] Figure 3 This is the main axonometric view of the clamping mechanism of the utility model;

[0021] Figure 4 This is a left axonometric view of the clamping mechanism of the utility model;

[0022] Figure 5 This is the main axonometric view of the stress loading mechanism of the utility model;

[0023] Figure 6 This is a left axonometric view of the stress loading mechanism of the utility model.

[0024] In the figure: 1. test bench; 2. control panel; 3. environmental simulation mechanism; 301. corrosive liquid storage box; 302. arc seat; 303. sealing sleeve; 4. clamping mechanism; 401. clamping body; 402. first screw rod; 403. second screw rod; 404. limiter; 405. bottom support plate; 406. limiter plate; 407. fixture; 5. stress loading mechanism; 501. plate body; 502. hydraulic cylinder; 503. moving plate; 504. pressure sensor; 505. sliding rod; 506. mounting sleeve; 507. mounting hole. DETAILED DESCRIPTION

[0025] See also Figure 1-Figure 6 A corrosion resistance test device for steel bars comprises a test bench 1, a control panel 2 is fixedly mounted on the front of the test bench 1, a plurality of environment simulation mechanisms 3 are mounted on the top of the test bench 1, a clamping mechanism 4 is mounted inside the environment simulation mechanism 3, and a stress loading mechanism 5 is disposed on one side of the environment simulation mechanism 3;

[0026] The clamping mechanism 4 includes a clamping body 401, the inner wall of the clamping body 401 is respectively connected to a limit member 404 and a bottom support plate 405, a limit plate 406 is sleeved on the limit member 404 and the bottom support plate 405, a first screw rod 402 is threadedly connected to the limit member 404, a clamp 407 is rotatably connected to the bottom of the first screw rod 402, a second screw rod 403 is threadedly connected to the limit plate 406, and the second screw rod 403 is rotatably connected to the rear side of the clamping body 401;

[0027] The stress loading mechanism 5 includes a plate body 501 , a hydraulic cylinder 502 is fixedly mounted on the top of the plate body 501 , a piston rod of the hydraulic cylinder 502 is connected to a moving plate 503 , a pressure sensor 504 is fixedly mounted on one side of the moving plate 503 , and one end of the pressure sensor 504 is connected to a mounting sleeve 506 .

[0028] By setting up the clamping mechanism 4, the steel bars can be clamped and fixed to prevent the steel bars from escaping from the corrosive liquid storage box 301 when subjected to stress. The steel bars are placed on the top of the bottom support plate 405, and the bottom support plate 405 firmly supports the bottom of the steel bars. The first screw rod 402 is rotated, and the first screw rod 402 drives the clamp 407 to move downward to clamp and fix the top of the steel bars. The second screw rod 403 is rotated, and the second screw rod 403 drives the limiting plate 406 to move on the surface of the bottom support plate 405 and the limiting member 404 to limit the steel bars.

[0029] By setting the stress loading mechanism 5, stress can be applied to the steel bar to make it slightly deformed. By applying slight stress, the stress to which the steel bar is subjected under actual use conditions can be better simulated, which can more realistically evaluate the corrosion resistance of the steel bar in a complex stress environment. A certain degree of stress will cause tiny cracks, dislocations and other defects on the surface of the steel bar, making it easier for the corrosive medium to penetrate into the steel bar, which can accelerate the corrosion process, improve the sensitivity and effectiveness of the detection, and form a richer and more complex surface morphology during the corrosion process, which helps to more comprehensively observe and understand the corrosion behavior of the steel bar. For specific engineering applications, it may be more valuable to understand the corrosion resistance of the steel bar under applied stress, and the durability and reliability of the steel bar in the actual engineering environment can be more accurately evaluated.

[0030] When the stress loading mechanism 5 applies stress, the steel bar is located in the mounting hole 507 to connect with the mounting sleeve 506. The plate body 501 drives the moving plate 503, the pressure sensor 504 and the mounting sleeve 506 to move. The mounting sleeve 506 applies stress to the steel bar to simulate the stress that the steel bar is subjected to under actual use conditions. The pressure sensor 504 detects the applied stress, and the detected data is transmitted to the control panel 2. When the set stress is reached, the plate body 501 is closed to stop applying stress.

[0031] Furthermore, the environmental simulation mechanism 3 includes a corrosive liquid containing box 301, a sealing sleeve 303 is installed on the surface of the corrosive liquid containing box 301, the installation sleeve 506 is located in the inner cavity of the sealing sleeve 303 and is movably connected to its inner wall, and the inner wall of the corrosive liquid containing box 301 is fixedly connected to an arc seat 302 for supporting steel bars.

[0032] By setting up the environment simulation mechanism 3, the corrosion environment of the steel bars can be simulated. The corrosive liquid is placed inside the corrosive liquid storage box 301, and the arc seat 302 supports the top of the steel bars. The corrosive liquid contacts the surface of the steel bars to corrode the steel bars. The staff tests the corrosion resistance of the steel bars based on the corrosion effect.

[0033] Furthermore, hand wheels are connected to the first screw rod 402 and the second screw rod 403 , and the surface of the clamp 407 is movably connected to the inner wall of the clamping body 401 .

[0034] By providing a hand wheel, the first screw rod 402 and the second screw rod 403 can be easily rotated, and the clamping body 401 limits the clamp 407 to prevent the clamp 407 from rotating.

[0035] Furthermore, a mounting hole 507 for mounting a steel bar is provided at one end of the mounting sleeve 506 , and a sliding rod 505 is provided at the top of the plate body 501 , and the sliding rod 505 is movably connected to the movable plate 503 and the mounting sleeve 506 .

[0036] The mounting hole 507 limits the position of the steel bar, and the sliding rod 505 limits the position of the movable plate 503 and the mounting sleeve 506.

[0037] Furthermore, the control panel 2 is provided with a display screen and control buttons.

[0038] The parts in contact with the corrosive liquid on the environment simulation mechanism 3, the clamping mechanism 4 and the stress loading mechanism 5 are sprayed with a corrosion-resistant coating to prevent the corrosive liquid from damaging the structure of the parts, and the parts themselves are made of corrosion-resistant materials.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A corrosion resistance test device for steel bars, comprising a test bench (1), a control panel (2) fixedly mounted on the front of the test bench (1), and a plurality of environmental simulation mechanisms (3) mounted on the top of the test bench (1), characterized in that: A clamping mechanism (4) is installed inside the environmental simulation mechanism (3), and a stress loading mechanism (5) is provided on one side of the environmental simulation mechanism (3); The clamping mechanism (4) comprises a clamping body (401), the inner wall of the clamping body (401) being respectively connected to a limiting member (404) and a bottom support plate (405), a limiting plate (406) being sleeved on the limiting member (404) and the bottom support plate (405), a first screw rod (402) being threadedly connected to the limiting member (404), a clamp (407) being rotatably connected to the bottom of the first screw rod (402), a second screw rod (403) being threadedly connected to the limiting plate (406), and the second screw rod (403) being rotatably connected to the rear side of the clamping body (401); The stress loading mechanism (5) comprises a plate body (501), a hydraulic cylinder (502) is fixedly mounted on the top of the plate body (501), a piston rod of the hydraulic cylinder (502) is connected to a movable plate (503), a pressure sensor (504) is fixedly mounted on one side of the movable plate (503), and one end of the pressure sensor (504) is connected to a mounting sleeve (506).

2. The corrosion resistance test device for steel bars according to claim 1, characterized in that: The environmental simulation mechanism (3) comprises a corrosive liquid containing box (301), a sealing sleeve (303) is installed on the surface of the corrosive liquid containing box (301), and the installation sleeve (506) is located in the inner cavity of the sealing sleeve (303) and is movably connected to the inner wall thereof.

3. A corrosion resistance test device for steel bars according to claim 2, characterized in that: An arc-shaped seat (302) for supporting the steel bars is fixedly connected to the inner wall of the corrosive liquid storage box (301).

4. The corrosion resistance test device for steel bars according to claim 1, characterized in that: The first screw rod (402) and the second screw rod (403) are connected to hand wheels, and the surface of the clamp (407) is movably connected to the inner wall of the clamping body (401).

5. The corrosion resistance test device for steel bars according to claim 1, characterized in that: One end of the installation sleeve (506) is provided with an installation hole (507) for installing the steel bar.

6. The corrosion resistance test device for steel bars according to claim 1, characterized in that: A sliding rod (505) is provided on the top of the plate body (501), and the sliding rod (505) is movably connected to the movable plate (503) and the mounting sleeve (506).

7. The corrosion resistance test device for steel bars according to claim 1, characterized in that: The control panel (2) is provided with a display screen and control buttons.

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