Compression creep test tool and creep test machine

Abstract

The utility model relates to a compression creep test tool and a creep test machine. The compression creep test tool comprises a first tool, a second tool and a fixing piece, the first tool is connected with a first stretching end of the creep testing machine, a compression channel is arranged in the first tool, the compression channel extends in the axial direction of the first tool and penetrates through one end of the first tool, the second tool is connected with a second stretching end of the creep testing machine, a containing cavity is formed in the second tool, and the containing cavity is suitable for containing a metal sample; the fixing piece penetrates through the containing cavity and the compression channel in the first direction, the fixing piece and the first tool are relatively fixed, the second tool is in sliding fit with the compression channel in the axial direction of the first tool, one end of the metal sample abuts against the wall face of the containing cavity, and the other end of the metal sample abuts against the fixing piece. The compression creep test tool disclosed by the utility model can be applied to a tensile creep test machine, can be used for carrying out a compression test on a metal material, and is beneficial to expanding the application range of the test machine.

Description

Technical Field

[0001] The utility model relates to the technical field of test equipment, and particularly to a compression creep test tooling and a creep testing machine. Background Art

[0002] When a metallic material is under the action of high temperature and axial compressive load during service, creep phenomenon will occur. With the gradual increase of the service temperature and service stress of the metallic material, the creep phenomenon will become more obvious. Therefore, the mutual relationship between creep deformation and time needs to be fully considered in material selection and design. This requires the use of compression creep tests to measure and study the relationships among temperature, compressive stress, deformation and time, and to determine whether the design requirements are met.

[0003] In actual use, most laboratories purchase single-head creep testing machines with low prices. However, the above-mentioned creep testing machines cannot complete the compression creep test of metal pipes, and their applicable ranges are relatively narrow. Content of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the related art to some extent.

[0005] Therefore, an embodiment of the utility model provides a compression creep test tooling, which can be applied to a tensile creep testing machine, can perform compression tests on metallic materials, and is beneficial to expanding the applicable range of the testing machine.

[0006] The compression creep test tooling of the embodiment of the utility model includes: a first tooling, which is adapted to be connected to the first tensile end of the creep testing machine. A compression channel is arranged in the first tooling, and the compression channel extends along the axial direction of the first tooling and penetrates through one end of the first tooling; a second tooling and a fixing member. The second tooling is adapted to be connected to the second tensile end of the creep testing machine. A receiving cavity is arranged in the second tooling, and a metal specimen is adapted to be placed in the receiving cavity. The fixing member penetrates through the receiving cavity and the compression channel in a first direction, and the first direction is orthogonal to the axial direction of the first tooling. The fixing member is relatively fixed to the first tooling. The second tooling is slidably matched with the compression channel along the axial direction of the first tooling. One end of the metal specimen abuts against the wall surface of the receiving cavity, and the other end of the metal specimen abuts against the fixing member.

[0007] According to the compression creep test tooling according to an embodiment of the present invention, since the first tooling is adapted to be connected to the first tensile end of the creep testing machine, the second tooling is adapted to be connected to the second tensile end of the creep testing machine, and the metal specimen is clamped and fixed by the wall surface of the accommodating cavity and the fixing member, when the first tooling and the second tooling are stretched, the second tooling moves away from the first tooling along the axial direction of the first tooling, and the accommodating cavity is compressed. Thus, the fixing member and the wall surface of the accommodating cavity can jointly apply pressure to the metal specimen to complete the compression creep test of the metal specimen. Therefore, the compression creep test tooling according to the embodiment of the present invention can be applied to a tensile creep testing machine, can perform compression tests on metal materials, and is beneficial to expanding the applicable range of the testing machine.

[0008] In some embodiments, the compression channel penetrates through the first tooling along a second direction, and the first direction, the second direction, and the axial direction of the first tooling are pairwise orthogonal.

[0009] In some embodiments, a first threaded hole is provided at one end of the first tooling facing away from the second tooling, and the first threaded hole is adapted to be connected to the first tensile end. A second threaded hole is provided at one end of the second tooling facing away from the first tooling, and the second threaded hole is adapted to be connected to the second tensile end.

[0010] In some embodiments, the contact surface of the fixing member with the metal specimen is a first plane, and the contact surface of the accommodating cavity with the metal specimen is a second plane.

[0011] In some embodiments, a positioning protrusion is provided on the fixing member, and the positioning protrusion is located on the side of the fixing member adjacent to the metal specimen. The positioning protrusion is used for radially positioning the metal specimen.

[0012] In some embodiments, the fixing member is a rectangular block, a rectangular hole penetrating along the first direction is provided on the first tooling, the fixing member is movably inserted into the rectangular hole, and the rectangular block and the rectangular hole are non-rotatably engaged.

[0013] According to another embodiment of the present invention, a creep testing machine includes the compression creep test tooling according to any one of the embodiments of the present invention.

[0014] According to the creep testing machine of the embodiment of the present utility model, since the first tooling is connected to the first stretching end of the creep testing machine, the second tooling is connected to the second stretching end of the creep testing machine, and the metal specimen is clamped and fixed by the wall surface of the accommodating cavity and the fixing member, when the first tooling and the second tooling are stretched, the second tooling moves away from the first tooling along the axial direction of the first tooling, and the accommodating cavity is compressed. Thus, the fixing member and the wall surface of the accommodating cavity can jointly apply pressure to the metal specimen to complete the compression creep test of the metal specimen. Therefore, the compression creep test tooling of the embodiment of the present utility model can be applied to a tensile creep testing machine, and can perform compression tests on metal materials, which is beneficial to expanding the applicable range of the testing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the installation schematic diagram of the compression creep test tooling of the embodiment of the present utility model.

[0016] Figure 2 is Figure 1 the front view of.

[0017] Figure 3 is Figure 1 the exploded view of.

[0018] Figure 4 is the top view of the compression creep test tooling of the embodiment of the present utility model after installing the metal specimen.

[0019] Figure 5 is Figure 4 the schematic view of B-B in.

[0020] Figure 6 is Figure 4 the schematic view of C-C in.

[0021] Reference numerals:

[0022] 1, the first tooling; 11, the compression channel; 12, the first threaded hole; 13, the rectangular hole;

[0023] 2, the second tooling; 21, the accommodating cavity; 211, the second plane; 22, the second threaded hole;

[0024] 3, the fixing member; 31, the first plane.

[0025] 4, the metal specimen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0027] The following refers to the attached Figures 1 to 6Describe a compression creep test tooling and a creep testing machine according to an embodiment of the present utility model.

[0028] As Figures 1 to 6 shown, the compression creep test tooling according to the embodiment of the present utility model includes: a first tooling 1, a second tooling 2, and a fixing member 3.

[0029] The first tooling 1 is adapted to be connected to the first stretching end of the creep testing machine. A compression channel 11 is provided in the first tooling 1. The compression channel 11 extends along the axial direction of the first tooling 1 and penetrates through one end of the first tooling 1. The second tooling 2 is connected to the second stretching end of the creep testing machine. A receiving cavity 21 is provided in the second tooling 2. A metal specimen 4 is adapted to be placed in the receiving cavity 21. The fixing member 3 penetrates through the receiving cavity 21 and the compression channel 11 along a first direction (such as Figure 6 the A direction in ). The first direction is orthogonal to the axial direction of the first tooling 1. The fixing member 3 is relatively fixed to the first tooling 1. The second tooling 2 is slidably engaged with the compression channel 11 along the axial direction of the first tooling 1. One end of the metal specimen 4 abuts against the wall surface of the receiving cavity 21, and the other end of the metal specimen 4 abuts against the fixing member 3.

[0030] It can be understood that when the first tooling 1 and the second tooling 2 are stretched, the receiving cavity 21 is compressed. One end of the metal specimen 4 abuts against the wall surface of the receiving cavity 21, and thus the wall surface of the receiving cavity 21 can provide pressure to the metal specimen 4. The fixing member 3 is relatively fixed to the first tooling 1, and the other end of the metal specimen 4 abuts against the fixing member 3. Therefore, the fixing member 3 can provide pressure to the metal specimen 4. In other words, the compression creep test tooling can convert the tensile force of the first tooling 1 and the second tooling 2 into the compression force of the metal specimen 4.

[0031] According to the compression creep test tooling of the embodiment of the present utility model, since the first tooling 1 is adapted to be connected to the first stretching end of the creep testing machine, the second tooling 2 is adapted to be connected to the second stretching end of the creep testing machine, and the metal specimen 4 is clamped and fixed by the wall surface of the receiving cavity 21 and the fixing member 3, when the first tooling 1 and the second tooling 2 are stretched, the second tooling 2 moves away from the first tooling 1 along the axial direction of the first tooling 1, and the receiving cavity 21 is compressed. Thus, the fixing member 3 and the wall surface of the receiving cavity 21 can jointly apply pressure to the metal specimen 4 to complete the compression creep test of the metal specimen 4. Therefore, the compression creep test tooling of the embodiment of the present utility model can be applied to a tensile creep testing machine, can perform compression tests on metal materials, and is beneficial to expanding the applicable range of the testing machine.

[0032] Optionally, the compression channel 11 extends along a second direction (such as Figure 5The D direction (in the figure) penetrates through the first tooling 1, and the first direction, the second direction, and the axial direction of the first tooling 1 are orthogonal to each other pairwise. Since the compression channel 11 penetrates through the first tooling 1 along the second direction, when assembling the first tooling 1 and the second tooling 2, the operator can either insert the second tooling 2 into the compression channel 11 along the axial direction of the first tooling 1 or insert the second tooling 2 into the compression channel 11 along the second direction (horizontal direction), which improves the convenience of assembling the compression creep test tooling.

[0033] In one example, the cross-sectional shape of the first tooling 1 is generally an n shape. The shape of the first tooling 1 and the second tooling 2 after splicing is generally cylindrical, which is convenient for manufacturing the first tooling 1 and the second tooling 2.

[0034] Optionally, as Figure 5 and Figure 6 shown, a first threaded hole 12 is provided at one end of the first tooling 1 facing away from the second tooling 2. The first threaded hole 12 is adapted to be connected to the first tensile end. A second threaded hole 22 is provided at one end of the second tooling 2 facing away from the first tooling 1. The second threaded hole 22 is adapted to be connected to the second tensile end. This can facilitate fixing the first tooling 1 and the second tooling 2 to the creep testing machine, and the structural design is simple and convenient for manufacturing.

[0035] In one example, as Figure 3 shown, the contact surface of the fixing member 3 and the metal specimen 4 is the first plane 31, and the contact surface of the accommodating cavity 21 and the metal specimen 4 is the second plane 211. It can be understood that the first plane 31 and the second plane 211 are parallel to each other, and the first plane 31 and the second plane 211 jointly abut against both ends of the metal specimen 4, which can improve the stability of the compression creep test tooling for clamping the metal specimen 4, and make the force on the metal specimen 4 more balanced during compression, improving the accuracy of the test.

[0036] Furthermore, a positioning protrusion (not shown) is provided on the fixing member 3. The positioning protrusion is located on the side of the fixing member 3 adjacent to the metal specimen 4. The positioning protrusion is used for radially positioning the metal specimen 4. For example, when the metal specimen 4 is a metal tube, the positioning protrusion can penetrate into the lumen of the metal tube to position the metal specimen 4, so as to avoid the problem of the metal specimen 4 tilting during assembly, which is beneficial to improving the accuracy of the test and the convenience of assembly.

[0037] Optionally, as Figure 3As shown, the fixing member 3 is a rectangular block. The first tooling 1 is provided with a rectangular hole 13 penetrating along the first direction. The fixing member 3 is movably inserted into the rectangular hole 13, and the rectangular block is in non-rotating fit with the rectangular hole 13. It can be understood that the rectangular block can be inserted into or withdrawn from the rectangular hole 13 along the first direction to improve the convenience of installing the fixing member 3. Since the rectangular block is in non-rotating fit with the rectangular hole 13, it is possible to avoid the problem of circumferential shaking of the fixing member 3 relative to the rectangular hole 13 during the compression test, which is beneficial to improving the accuracy of the test.

[0038] The creep testing machine according to another embodiment of the present invention includes the compression creep test tooling of the present invention.

[0039] In the creep testing machine according to the embodiment of the present invention, since the first tooling is connected to the first stretching end of the creep testing machine, the second tooling 2 is connected to the second stretching end of the creep testing machine, and the metal specimen 4 is clamped and fixed by the wall surface of the accommodating cavity 21 and the fixing member 3. Therefore, when the first tooling 1 and the second tooling 2 are stretched, the second tooling 2 moves away from the first tooling 1 along the axial direction of the first tooling 1, and the accommodating cavity 21 is compressed. Thus, the fixing member 3 and the wall surface of the accommodating cavity 21 can jointly apply pressure to the metal specimen 4 to complete the compression creep test of the metal specimen 4. Therefore, the compression creep test tooling according to the embodiment of the present invention can be applied to a tensile creep testing machine, and can perform compression tests on metal materials, which is beneficial to expanding the applicable range of the testing machine.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0042] In the present utility model, unless otherwise clearly defined or limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. 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.

[0043] In the present utility model, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0044] In the present utility model, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0045] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present utility model.

Claims

1. A compression creep test tooling, characterized in that, Comprising: A first tooling, the first tooling being adapted to be connected to the first tensile end of a creep testing machine. A compression channel is provided in the first tooling, the compression channel extending along the axial direction of the first tooling and penetrating through one end of the first tooling. A second tooling and a fixing member, the second tooling being adapted to be connected to the second tensile end of the creep testing machine. A receiving cavity is provided in the second tooling, and a metal specimen is adapted to be placed in the receiving cavity. The fixing member is disposed through the receiving cavity and the compression channel in a first direction, the first direction being orthogonal to the axial direction of the first tooling. The fixing member is relatively fixed to the first tooling, and the second tooling is slidably engaged with the compression channel along the axial direction of the first tooling. One end of the metal specimen abuts against the wall surface of the receiving cavity, and the other end of the metal specimen abuts against the fixing member.

2. The compression creep test tooling according to claim 1, wherein The compression channel penetrates through the first tooling in a second direction, and the first direction, the second direction and the axial direction of the first tooling are pairwise orthogonal.

3. The compression creep test tooling according to claim 1, wherein A first threaded hole is provided at one end of the first tooling facing away from the second tooling, and the first threaded hole is adapted to be connected to the first tensile end. A second threaded hole is provided at one end of the second tooling facing away from the first tooling, and the second threaded hole is adapted to be connected to the second tensile end.

4. The compression creep test tooling according to claim 1, characterized in that, The contact surface of the fixing member with the metal specimen is a first plane, and the contact surface of the receiving cavity with the metal specimen is a second plane.

5. The compression creep test tooling according to claim 1, wherein A positioning convex is provided on the fixing member, and the positioning convex is located on the side of the fixing member adjacent to the metal specimen. The positioning convex is used for radially positioning the metal specimen.

6. The compression creep test tooling according to claim 1, wherein The fixing member is a rectangular block, and a rectangular hole penetrating along the first direction is provided on the first tooling. The fixing member is movably disposed through the rectangular hole, and the rectangular block is non-rotatably engaged with the rectangular hole.

7. A creep testing machine, characterized in that, Comprising the compression creep test tooling according to any one of claims 1-6.

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