A metal material compression creep test deformation measuring tool

Abstract

This utility model provides a tooling for measuring deformation in compression creep tests of metallic materials, belonging to the technical field of material testing tooling. It includes a first mounting frame and a second mounting frame coaxially and slidably connected. The second mounting frame has a mounting cavity for accommodating a metal sample. An abutment plate for compressing the metal sample is slidably disposed within the mounting cavity along the axial direction of the second mounting frame, and the abutment plate is connected to the first mounting frame. An extensometer is mounted on the second mounting frame to measure its own movement relative to the first mounting frame to compress the metal sample. This invention improves the convenience of measuring deformation in compression creep tests of metallic samples.

Description

Technical Field

[0001] This utility model relates to the field of material testing tooling technology, and in particular to a tooling for measuring deformation in compression creep testing of metallic materials. Background Technology

[0002] Creep refers to the slow plastic deformation of a material under prolonged constant temperature and load. The creep properties of a material directly affect its lifespan.

[0003] High-temperature alloys, titanium alloys, and other metallic materials are indispensable key structural materials in aerospace, energy, and chemical industries. Some structural components made of these materials undergo prolonged service under high temperature and compressive stress, resulting in deformation primarily characterized by compressive creep. Therefore, during the research and development of metallic materials, a tooling for measuring the compressive creep deformation of metallic materials is needed to facilitate testing at the operating temperatures of the corresponding product components. Utility Model Content

[0004] In view of the above problems, this utility model provides a tooling for measuring deformation in compression creep tests of metallic materials.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A tooling for measuring the deformation of a metal material compression creep test is provided, comprising a first mounting frame and a second mounting frame that are coaxially and slidably connected. The second mounting frame has a mounting cavity for accommodating a metal sample. An abutment plate for compressing the metal sample is slidably disposed in the mounting cavity along the axial direction of the second mounting frame and is connected to the first mounting frame. An extensometer is provided on the second mounting frame for measuring the range of its own movement relative to the first mounting frame to compress the metal sample.

[0007] Furthermore, the extensometer includes a measuring column, a second chuck is provided on the second mounting frame, a first chuck is slidably provided on the outer side of the second mounting frame on the side of the second chuck away from the mounting cavity, and the first chuck is fixedly connected to the abutment plate. The measuring column is parallel to the direction of movement of the second mounting frame and is provided on the first chuck. A limiting hole is provided on the second chuck for the measuring column to move through.

[0008] Furthermore, graduation lines are provided on the outer wall of the measuring column.

[0009] Furthermore, the end of the measuring column furthest from the first chuck has a chamfer at its edge.

[0010] Furthermore, mounting holes are provided on the outer walls of both the first mounting bracket and the second mounting bracket at their ends that are far apart from each other.

[0011] The beneficial effects of this utility model are as follows: After the metal sample is placed in the mounting cavity, the first mounting bracket can be installed in the heating furnace, and the cavity can be located inside the heating furnace so that the metal sample can be heated to the working temperature range of the product component. The extensometer and the end of the second mounting bracket away from the first mounting bracket are both located outside the heating furnace. Then, the end of the second mounting bracket away from the first mounting bracket is installed on a device with a linear dragging function. The dragging device is started to drive the second mounting bracket to move away from the first mounting bracket, so that the abutment plate can move and compress the metal sample. During the compression creep of the metal sample, the distance that the second mounting bracket moves relative to the first mounting bracket can be measured by the extensometer, that is, the amount of compression deformation of the metal sample, which has the effect of improving the convenience of deformation measurement in the compression creep test of the metal sample. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a deformation measurement fixture for compression creep testing of metallic materials according to an embodiment of this application.

[0013] Figure 2 This is a schematic diagram of the structure of the first mounting frame of a deformation measurement fixture for a compression creep test of a metallic material, according to an embodiment of this application.

[0014] Figure 3 This is a schematic diagram of the second mounting frame of a deformation measurement fixture for a compression creep test of metallic materials according to an embodiment of this application.

[0015] Among them, 1. First mounting bracket; 11. First chuck; 2. Second mounting bracket; 21. Mounting cavity; 22. Second chuck; 221. Limiting hole; 3. Abutment plate; 4. Extensometer; 41. Measuring column; 411. Chamfer; 5. Scale line; 6. Mounting hole; 7. First connecting rod; 8. Second connecting rod; 9. Pin. Detailed Implementation

[0016] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0017] This application discloses a tooling for measuring deformation in a compression creep test of metallic materials, referring to... Figure 1 , Figure 2 and Figure 3 The system includes a first mounting frame 1 and a second mounting frame 2 that are coaxially slidably connected. The second mounting frame 2 has a mounting cavity 21 for accommodating a metal sample. An abutment plate 3 for compressing the metal sample is slidably disposed in the mounting cavity 21 along the axial direction of the second mounting frame 2, and the abutment plate 3 is connected to the first mounting frame 1. An extensometer 4 is provided on the second mounting frame 2 for measuring its own movement relative to the first mounting frame 1 to compress the range of the metal sample.

[0018] In this embodiment, through holes are provided on the abutment plate 3 and the first mounting bracket 1. A pin 9 is passed through the through hole and pressurized to connect the abutment plate 3 and the first mounting bracket 1 together. After the metal sample is placed in the mounting cavity 21, the first mounting bracket 1 can be installed in a heating furnace, with the cavity located inside the furnace, so that the metal sample can be heated to the working temperature range of the product component. The extensometer 4 and the end of the second mounting bracket 2 away from the first mounting bracket 1 are both located outside the heating furnace. Subsequently, the end of the second mounting bracket 2 away from the first mounting bracket 1 is installed on a device with a linear dragging function. Activating the dragging device drives the second mounting bracket 2 to move away from the first mounting bracket 1, thereby moving the abutment plate 3 and compressing the metal sample. During the compression creep of the metal sample, the distance the second mounting bracket 2 moves relative to the first mounting bracket 1 can be measured by the extensometer 4, i.e., the amount of compression deformation of the metal sample. This has the effect of improving the convenience of measuring the deformation in the compression creep test of the metal sample.

[0019] Specifically, the extensometer 4 includes a measuring column 41, a second chuck 22 is provided on the second mounting bracket 2, and a first chuck 11 is slidably provided on the outer side of the second mounting bracket 2 on the side of the second chuck 22 away from the mounting cavity 21, and the first chuck 11 is welded and fixed to the abutment plate 3. The measuring column 41 is parallel to the direction of movement of the second mounting bracket 2 and is bolted to the first chuck 11, and the second chuck 22 has a limiting hole 221 for the measuring column 41 to move through.

[0020] In this embodiment, a first connecting rod 7 is welded between the first chuck 11 and the abutment plate 3, and a second connecting rod 8 is welded between the second chuck 22 and the second mounting bracket 2. As the second mounting bracket 2 moves away from the first mounting bracket 1, the second chuck 22 can move closer to the first chuck 11, allowing the measuring column 41 to slide within the limiting hole 221. The distance the second chuck 22 moves relative to the first chuck 11 can be measured using the measuring column 41, which represents the amount of compressive deformation of the metal sample.

[0021] To facilitate the measurement of the distance the second chuck 22 moves relative to the first chuck 11 by the measuring column 41, a scale line 5 is provided on the outer wall of the measuring column 41.

[0022] To facilitate the passage of the measuring column 41 through the limiting hole 221, a chamfer 411 is provided at the edge of the end of the measuring column 41 away from the first chuck 11.

[0023] Furthermore, each of the first mounting bracket 1 and the second mounting bracket 2, located at opposite ends, has mounting holes 6 on its outer wall.

[0024] In this embodiment, the heating furnace and the dragging device are equipped with hooks for passing through the mounting hole 6. By hanging the first mounting bracket 1 and the second mounting bracket 2 on the two hooks respectively, the dragging device can be activated, causing the second mounting bracket 2 to move away from the first mounting bracket 1 to compress the metal sample. This improves the ease of installation of the tooling.

[0025] The implementation principle of the deformation measurement fixture for compression creep testing of metallic materials according to an embodiment of this application is as follows: After placing the metal sample in the mounting cavity 21, the first mounting bracket 1 can be installed in a heating furnace, with the cavity located inside the furnace, so that the metal sample is heated to the working temperature range of the product component. The extensometer 4 and the end of the second mounting bracket 2 furthest from the first mounting bracket 1 are both located outside the heating furnace. Subsequently, the end of the second mounting bracket 2 furthest from the first mounting bracket 1 is installed on a device with a linear dragging function. Activating the dragging device drives the second mounting bracket 2 to move away from the first mounting bracket 1, thereby causing the abutment plate 3 to move and compress the metal sample. During the compression creep process of the metal sample, the distance the second mounting bracket 2 moves relative to the first mounting bracket 1 can be measured by the extensometer 4, i.e., the amount of compression deformation of the metal sample. This has the effect of improving the convenience of deformation measurement in compression creep testing of metallic samples.

[0026] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and modifications.

Claims

1. A fixture for measuring deformation in a compression creep test of metallic materials, characterized in that: The device includes a first mounting frame (1) and a second mounting frame (2) that are coaxially slidably connected. The second mounting frame (2) has a mounting cavity (21) for accommodating a metal sample. An abutment plate (3) for compressing the metal sample is slidably disposed in the mounting cavity (21) along the axial direction of the second mounting frame (2). The abutment plate (3) is connected to the first mounting frame (1). The second mounting frame (2) is provided with an extensometer (4) for measuring its own movement relative to the first mounting frame (1) to compress the range of the metal sample.

2. The fixture for measuring deformation in a compression creep test of metallic materials according to claim 1, characterized in that: The extensometer (4) includes a measuring column (41), a second chuck (22) is provided on the second mounting bracket (2), a first chuck (11) is slidably provided on the side of the second mounting bracket (22) away from the mounting cavity (21) on the outside of the second mounting bracket (2), and the first chuck (11) is fixedly connected to the abutment plate (3). The measuring column (41) is parallel to the direction of movement of the second mounting bracket (2) and is provided on the first chuck (11). The second chuck (22) is provided with a limiting hole (221) for the measuring column (41) to move through.

3. The tooling for measuring deformation in a compression creep test of metallic materials according to claim 2, characterized in that: The outer wall of the measuring column (41) is provided with scale lines (5).

4. The fixture for measuring deformation in a compression creep test of metallic materials according to claim 2, characterized in that: The measuring column (41) has a chamfer (411) at the edge of the end away from the first chuck (11).

5. The fixture for measuring deformation in a compression creep test of metallic materials according to claim 1, characterized in that: The first mounting bracket (1) and the second mounting bracket (2) each have mounting holes (6) on their outer walls at the ends that are far apart from each other.

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