Bending strength testing tool applied to corrosion environment

Abstract

The utility model provides a bending strength testing tool applied to a corrosion environment, which comprises a hydraulic servo testing machine, at least two bending sample supports and a fixed base, the fixed base is horizontally arranged, and the positions of the at least two bending sample supports are oppositely arranged on the upper surface of the fixed base. Comprising a bending sample pressure head and a corrosion container, an opening of the corrosion container faces upwards, the bottom of the corrosion container is connected with the lower surface of the fixed base, the upper end of the bending sample pressure head is fixed to a pressure head of the hydraulic servo testing machine, and the bending sample pressure head is arranged in the corrosion container and located between bending sample supports opposite in position. During a test, a corrosion solution can be introduced into the corrosion container to simulate a corrosion environment, the upper end of the bending sample pressure head is fixed on the pressure head of the hydraulic servo testing machine, the bending sample pressure head is arranged in the corrosion container and is positioned between the bending sample brackets which are opposite in position, and the bending sample pressure head is one of core components of the clamp. The device is installed on a hydraulic servo testing machine.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering anti-corrosion, in particular to a bending strength testing tool applied to a corrosion environment. Background Art

[0002] In the research and application process of modern engineering materials, the mechanical property testing of materials is particularly important. The bending strength testing of materials is a common and important testing method, which evaluates the strength and toughness of materials by applying bending stress. However, many engineering materials need to work in a corrosion environment in actual applications, such as in the fields of ocean engineering, chemical equipment, and aerospace. Therefore, it is particularly crucial to evaluate the bending strength of materials in a corrosion environment. Conducting bending strength testing in a corrosion environment faces many technical challenges. Most of the existing bending strength testing equipment on the market currently cannot meet the requirements of testing in a corrosion environment. Traditional testing equipment usually uses two bending specimen supports to support the specimen, and then uses a hydraulic servo testing machine to apply force to the specimen. This traditional testing equipment usually lacks anti-corrosion design. As a common main force-applying machine, the hydraulic servo testing machine cannot be easily placed in a corrosion environment. Therefore, it is difficult to achieve high-precision corrosion environment simulation. How to conduct material bending strength testing in a corrosion environment without damaging the testing machine has become a difficult problem. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a bending strength testing tool applied to a corrosion environment, which can conduct material bending strength testing in a corrosion environment without damaging the testing machine.

[0004] The technical solution adopted by the utility model to solve its technical problem is as follows:

[0005] A bending strength testing tool applied to a corrosion environment includes a hydraulic servo testing machine, at least two bending specimen supports, and a fixed base. The fixed base is placed horizontally. At least two bending specimen supports are relatively arranged on the upper surface of the fixed base. It includes a bending specimen press head and a corrosion container. The corrosion container has an upward opening and its bottom is connected to the lower surface of the fixed base. The upper end of the bending specimen press head is fixed to the press head of the hydraulic servo testing machine. The bending specimen press head is placed in the corrosion container and is located between the relatively arranged bending specimen supports.

[0006] Further, it includes at least two bending specimen movable brackets and at least two movable bracket fixing screws. The bending specimen bracket is provided with movable bracket fixing screw holes. The movable bracket fixing screws are screwed to the bending specimen bracket through the movable bracket fixing screw holes. The bending specimen movable bracket has a strip-shaped movable bracket fixing screw groove with the length direction being the vertical direction. One end of the movable bracket fixing screw away from the bending specimen bracket is placed in the movable bracket fixing screw groove. When the bending specimen movable bracket moves, the bending specimen movable bracket is movably connected to the movable bracket fixing screw through the movable bracket fixing screw groove.

[0007] Further, it includes at least two bending specimen bracket screws. The end face of the bending specimen bracket close to the fixed base is provided with bending specimen bracket screw holes. The bending specimen bracket screws are screwed to the bending specimen bracket through the bending specimen bracket screw holes. The upper surface of the fixed base is provided with a bending specimen bracket screw groove which is a strip-shaped groove. One end of the bending specimen bracket screw away from the bending specimen bracket is placed in the bending specimen bracket screw groove. When the bending specimen bracket moves, the bending specimen bracket can be connected to the bending specimen bracket screw through the bending specimen bracket screw groove.

[0008] Further, the bending specimen indenter is a wedge-shaped indenter.

[0009] Further, it includes a scale. The fixed base is a square base. The scale is horizontally installed on the side of the fixed base, and the upper edge of the scale coincides with the edge of the upper surface of the fixed base.

[0010] Further, it includes a sealing washer and a corrosion container locking nut. A bolt protrudes from the lower surface of the fixed base. The bottom of the corrosion container is provided with a screw hole. The bolt is in threaded fit with the screw hole. The corrosion container locking nut is in cooperation with the bolt and the end face of the corrosion container locking nut close to the screw hole contacts the lower surface of the corrosion container. The sealing washer is installed between the corrosion container locking nut and the corrosion container to seal the gap between the bolt and the corrosion container.

[0011] The beneficial effects of the present utility model are:

[0012] The bending strength testing tool applied to the corrosive environment provided by the present utility model has the corrosion container with the opening facing upwards and the bottom connected to the lower surface of the fixed base. During the test, the corrosion solution can be introduced into the corrosion container to simulate the corrosive environment. The upper end of the bending specimen indenter is fixed to the indenter of the hydraulic servo testing machine. The bending specimen indenter is placed in the corrosion container and between the bending specimen brackets with opposite positions. The upper indenter of the bending specimen is one of the core components of the fixture and is installed on the hydraulic servo testing machine. Its main function is to apply a vertically downward force to make the specimen bend under the stressed state, and at the same time, it can also protect the fatigue testing machine to realize the bending strength testing of materials in the corrosive environment without damaging the testing machine.

[0013] By setting the movable bracket fixing screw and the movable bracket fixing screw groove, the movable bracket of the bending specimen can be adjusted according to needs, enabling the fixture to adapt to specimens of different sizes.

[0014] The design of the bending specimen bracket screw and the bending specimen bracket screw groove enables the bending specimen bracket to be conveniently installed and disassembled, simplifying the specimen installation and disassembly process.

[0015] The wedge-shaped design of the bending specimen indenter can ensure the stability of the specimen when subjected to bending force. At the same time, it ensures that the applied force is evenly distributed on the specimen, improving the accuracy and repeatability of the test.

[0016] The setting of the scale enables the operator to accurately adjust the specimen position, ensuring consistent test conditions each time and improving the comparability of test results.

[0017] By using the corrosion container locking nut and the sealing washer, a tight connection between the corrosion container and the fixed base is ensured, preventing the leakage of corrosive media. Brief Description of the Drawings

[0018] To more clearly illustrate the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below.

[0019] Figure 1 is a schematic structural diagram of a bending strength test tool applied in a corrosive environment.

[0020] Figure 2 is a schematic structural diagram of the bending specimen indenter.

[0021] Figure 3 is a schematic structural diagram of the fixed base.

[0022] Figure 4 is a schematic structural diagram of the movable bracket of the bending specimen.

[0023] In the figure, the markings are: 1 - bending specimen indenter, 2 - bending specimen, 3 - movable bracket of the bending specimen, 4 - movable bracket fixing screw, 5 - bending specimen bracket, 6 - bending specimen bracket screw, 7 - fixed base, 8 - scale, 9 - corrosion container. Detailed Embodiments

[0024] The present utility model will be further described below in conjunction with the drawings.

[0025] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described below are only used to explain the present utility model and are not used to limit the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "far from", "close to", etc. should be understood in a broad sense and not be used to limit the protection scope of the present utility model. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] A bending strength test tool applied to a corrosive environment includes a hydraulic servo testing machine, at least two bending specimen supports 5, and a fixed base 7. The fixed base 7 is placed horizontally, and at least two bending specimen supports 5 are relatively arranged on the upper surface of the fixed base 7. It includes a bending specimen pressing head 1 and a corrosion container 9. The corrosion container 9 has an upward opening and its bottom is connected to the lower surface of the fixed base 7. The upper end of the bending specimen pressing head 1 is fixed on the pressing head of the hydraulic servo testing machine. The bending specimen pressing head 1 is placed in the corrosion container 9 and is located between the relatively arranged bending specimen supports 5.

[0028] As Figure 1 shown, during use, the bending specimen pressing head 1 is fixed on the hydraulic servo testing machine to ensure the stability of the position of the bending specimen pressing head 1. Select a bending specimen 2 with appropriate size and shape according to the experimental requirements and place the specimen on the two bending specimen supports 5. Install the corrosion container 9 on the fixed base 7 to ensure the sealing between the corrosion container 9 and the fixed base 7 to prevent the leakage of the corrosive solution. Add an appropriate amount of corrosive medium such as acid, alkali, or salt solution to the corrosion container 9 to ensure that the specimen can be completely immersed in the corrosive solution. Start the hydraulic servo testing machine and apply a vertically downward force to make the bending specimen pressing head 1 uniformly apply pressure to the specimen for bending testing. During the testing process, record the stress and strain data of the specimen through the testing equipment, observe the state of the specimen in the corrosive solution, and evaluate the performance of the material under bending stress conditions. After the test is completed, analyze the collected data to evaluate performance indicators such as the bending strength, elastic modulus, and fracture toughness of the specimen under bending stress and corrosive environment.

[0029] Furthermore, it includes at least two bending specimen movable supports 3 and at least two movable support fixing screws 4. The bending specimen support 5 is provided with movable support fixing screw holes. The movable support fixing screws 4 are screwed to the bending specimen support 5 through the movable support fixing screw holes. The bending specimen movable support 3 has a strip-shaped movable support fixing screw groove with the length direction being the vertical direction. One end of the movable support fixing screw 4 far from the bending specimen support 5 is placed in the movable support fixing screw groove. When the bending specimen movable support 3 moves, the bending specimen movable support 3 is movably connected to the movable support fixing screw 4 through the movable support fixing screw groove.

[0030] In this solution, by setting the movable support fixing screw 4 and the movable support fixing screw groove, the bending specimen movable support 3 can adjust its position as needed, enabling the fixture to adapt to specimens of different sizes.

[0031] Furthermore, it includes at least two bending specimen support screws 6. On the end face of the bending specimen support 5 close to the fixed base 7, there are bending specimen support screw holes. The bending specimen support screws 6 are screwed to the bending specimen support 5 through the bending specimen support screw holes. On the upper surface of the fixed base 7, there is a bending specimen support screw groove, which is a strip-shaped groove. One end of the bending specimen support screw 6 away from the bending specimen support 5 is placed in the bending specimen support screw groove. When the bending specimen support 5 moves, the bending specimen support 5 can be connected to the bending specimen support screw 6 through the bending specimen support screw groove.

[0032] The design of the bending specimen support screws 6 and the bending specimen support screw groove enables the bending specimen support 5 to be conveniently installed and disassembled, simplifying the specimen installation and disassembly process.

[0033] Furthermore, the bending specimen indenter 1 is a wedge-shaped indenter.

[0034] The design of the wedge-shaped bending specimen indenter 1 can ensure the stability of the specimen when subjected to a bending force. At the same time, it ensures that the applied force is evenly distributed on the specimen, improving the accuracy and repeatability of the test.

[0035] Furthermore, it includes a scale 8. The fixed base 7 is a square base. The scale 8 is horizontally installed on the side of the fixed base 7, and the upper edge of the scale 8 coincides with the edge of the upper surface of the fixed base 7.

[0036] The setting of the scale 8 enables the operator to accurately adjust the specimen position, ensuring consistent test conditions each time and improving the comparability of test results.

[0037] Furthermore, it includes a sealing washer 10 and a corrosion container locking nut 11. A bolt extends from the lower surface of the fixed base 7. There is a threaded hole at the bottom of the corrosion container 9. The bolt is in threaded fit with the threaded hole. The corrosion container locking nut 11 is fitted with the bolt, and the end face of the corrosion container locking nut 11 close to the threaded hole contacts the lower surface of the corrosion container 9. The sealing washer 10 is installed between the corrosion container locking nut 11 and the corrosion container 9 to seal the gap between the bolt and the corrosion container 9.

[0038] The corrosion container 9 and the fixed base 7 can also be welded. However, considering the need for later replacement and repair of components, screw connection is preferably used. By using the corrosion container locking nut and the sealing washer, a tight connection between the corrosion container and the fixed base is ensured, preventing the leakage of corrosive media.

[0039] The bending strength test tool applied to a corrosive environment provided by the present utility model has no limitation on its preparation process and surface treatment method. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bending strength testing tool for use in a corrosive environment, comprising a hydraulic servo testing machine, at least two bending sample holders (5) and a fixed base (7), wherein the fixed base (7) is placed horizontally, and at least two bending sample holders (5) are arranged on the upper surface of the fixed base (7) in a relative position, characterized in that: The invention comprises a bending sample pressure head (1) and a corrosion container (9). The corrosion container (9) is opened upward and its bottom is connected to the lower surface of a fixed base (7). The upper end of the bending sample pressure head (1) is fixed to the pressure head of a hydraulic servo testing machine. The bending sample pressure head (1) is placed in the corrosion container (9) and is located between bending sample brackets (5) that are opposite to each other.

2. The bending strength testing tool for use in a corrosive environment according to claim 1, characterized in that: The invention comprises at least two movable brackets (3) for bending specimens and at least two movable bracket fixing screws (4); a movable bracket fixing screw hole is provided on the bending specimen bracket (5); the movable bracket fixing screw (4) is screwed to the bending specimen bracket (5) through the movable bracket fixing screw hole; the movable bracket (3) for bending specimens has a strip-shaped movable bracket fixing screw groove with a length direction in a vertical direction; one end of the movable bracket fixing screw (4) away from the bending specimen bracket (5) is placed in the movable bracket fixing screw groove; when the movable bracket (3) for bending specimens moves, the movable bracket (3) for bending specimens is movably connected to the movable bracket fixing screw (4) through the movable bracket fixing screw groove.

3. The bending strength testing tool for use in a corrosive environment according to claim 1, characterized in that: The invention comprises at least two bending sample support screws (6), wherein a bending sample support screw hole is formed on the end surface of the bending sample support (5) close to the fixed base (7), and the bending sample support screw (6) is screwed to the bending sample support (5) through the bending sample support screw hole. The upper surface of the fixed base (7) is provided with a bending sample support screw groove, which is a strip-shaped groove. One end of the bending sample support screw (6) away from the bending sample support (5) is placed in the bending sample support screw groove. When the bending sample support (5) moves, the bending sample support (5) can be connected to the bending sample support screw (6) through the bending sample support screw groove.

4. The bending strength testing tool for use in a corrosive environment according to claim 1, characterized in that: The bending specimen indenter (1) is a wedge-shaped indenter.

5. The bending strength testing tool for use in a corrosive environment according to claim 1, characterized in that: The fixed base (7) comprises a scale (8), wherein the fixed base (7) is a square base, the scale (8) is horizontally mounted on the side of the fixed base (7), and the upper end edge of the scale (8) coincides with the edge of the upper surface of the fixed base (7).

6. The bending strength testing tool for use in a corrosive environment according to claim 1, characterized in that: The invention comprises a sealing gasket (10) and a corrosion container locking nut (11); a bolt extends from the lower surface of the fixed base (7); a screw hole is provided at the bottom of the corrosion container (9); the bolt is threadedly matched with the screw hole; the corrosion container locking nut (11) is matched with the bolt and the end surface of the corrosion container locking nut (11) close to the screw hole is in contact with the lower surface of the corrosion container (9); the sealing gasket (10) is installed between the corrosion container locking nut (11) and the corrosion container (9) and seals the gap between the bolt and the corrosion container (9).

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