Tensile sample for tungsten-copper alloy

Abstract

The utility model discloses a tensile sample for a tungsten-copper alloy. The tensile sample comprises a tensile sample which cannot be pressed by external transverse pressure to form a deep mark in a tensile test process. Comprising an upper clamping section, a lower clamping section and a scale distance part located between the upper clamping section and the lower clamping section, and external threads are arranged outside the upper clamping section and the lower clamping section. The tensile test sample is screwed on the adapter rod through the external threads of the upper clamping section and the lower clamping section to be stretched, so that the test sample is only subjected to vertical tensile force during stretching and cannot be pressed to form deep marks by external transverse pressure, as shown in the figure, and the problem that the test sample is easy to break at the clamping sections during stretching to cause failure of an experiment is solved.

Description

Technical Field

[0001] The utility model relates to a tensile test specimen for a tungsten-copper alloy and belongs to the technical field of tensile test specimens. Background Art

[0002] Tungsten copper alloy is a high-performance alloy made by powder metallurgy process, also known as pseudo alloy. The use of tungsten copper alloy first requires the preparation of tensile specimens, and then the mechanical properties test to ensure that its mechanical properties meet the standard requirements.

[0003] In the conventional tungsten copper alloy tensile test, a wedge-shaped fixture 11 with a serrated surface clamps the end of the tensile specimen 1 (such as Figure 4 During the tensile test, the tensile specimen 1 is subjected to external lateral pressure (as shown in Figure 5 As shown in the figure, the end face of the sample clamping section is pressed into a deep mark by the wedge-shaped fixture, and the sample is prone to breakage in the clamping section during stretching, resulting in experimental failure. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a tensile test specimen for tungsten-copper alloy.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides a tensile test specimen for tungsten-copper alloy, comprising:

[0007] A tensile specimen that will not be subjected to external lateral pressure to produce deep marks during the tensile test.

[0008] The utility model comprises an upper clamping section, a lower clamping section and a gauge length portion located between the upper clamping section and the lower clamping section. External threads are arranged on the outer sides of the upper clamping section and the lower clamping section.

[0009] There is a transition stage A and a variable-cut step A between the gauge length portion and the upper clamping section, a transition zone consisting of chamfers between the gauge length portion and the transition stage A, and a transition zone consisting of chamfers between the transition stage A and the variable-cut step A.

[0010] There is a transition stage B and a variable-cut step B between the gauge length portion and the lower clamping section, a transition zone consisting of a chamfer between the gauge length portion and the transition stage B, and a transition zone consisting of a chamfer between the transition stage B and the variable-cut step B.

[0011] It also includes a transfer rod which can be screwed with the external threads of the upper clamping section and the lower clamping section.

[0012] The transfer rod is T-shaped, and the bottom surface of the step part of the T-shaped transfer rod is an arc, and the center of the arc is located at the middle line of the transfer rod; the transfer rod is provided with an internal threaded hole to correspond to the external threads of the upper clamping section and the lower clamping section.

[0013] It also includes a crossbeam, which is provided with a speaker through hole. The top of the speaker through hole of the crossbeam is provided with a circular arc lower groove to contact the circular arc of the bottom surface of the step part of the transfer rod.

[0014] The beneficial effect of the utility model is that the tensile specimen is stretched on the transfer rod by screwing the external threads of the upper clamping section and the lower clamping section, so that the specimen is only subjected to upper and lower tensile forces during stretching and is not subjected to external lateral pressure to form deep marks, as shown in the figure, thereby solving the problem that the specimen is prone to breakage in the clamping section during stretching, resulting in experimental failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the tensile specimen of the utility model;

[0016] Figure 2 This is a schematic diagram of the tensile specimen of the utility model when it is installed and stretched;

[0017] Figure 3 It is a schematic diagram of the tensile test specimen of the utility model when it is stretched and stressed;

[0018] Figure 4 It is a schematic diagram of the prior art tensile specimen during installation and stretching;

[0019] Figure 5 It is a schematic diagram of a tensile specimen under tensile stress in the prior art;

[0020] In the figure: 1- tensile specimen; 2- upper clamping section; 3- lower clamping section; 4- gauge length portion; 5- transition stage A; 6- variable step A; 7- transition stage B; 8- variable step B; 9- transfer rod; 10- crossbeam; 81- transition zone. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0022] like Figures 1 to 3 shown.

[0023] A tensile test specimen 1 for tungsten-copper alloy of the present application comprises:

[0024] The outer portion is provided with an upper clamping section 2 and a lower clamping section 3 with external threads, and a gauge length portion 4 is provided between the upper clamping section 2 and the lower clamping section 3.

[0025] There are a transition stage A5 and a change-cut step A6 between the gauge portion 4 and the upper clamping section 2, a transition zone 81 formed by a chamfer of R2.65 between the gauge portion 4 and the transition stage A5, and a transition zone 81 formed by a chamfer of R2.65 between the transition stage A5 and the change-cut step A6.

[0026] There are a transition stage B7 and a variable-cut step B8 between the gauge portion 4 and the lower clamping section 3, a transition zone 81 formed by a chamfer of R2.65 between the gauge portion 4 and the transition stage B7, and a transition zone 81 formed by a chamfer of R2.65 between the transition stage B7 and the variable-cut step B8.

[0027] It also includes a transfer rod 9 that can be screwed together with the external threads of the upper clamping section 2 and the lower clamping section 3. The transfer rod 9 is T-shaped, and the bottom surface of the step part of the T-shaped transfer rod 9 is an arc, and the center of the arc is located at the middle line of the transfer rod 9; the transfer rod 9 is provided with an internal threaded hole to correspond to the external threads of the upper clamping section 2 and the lower clamping section 3.

[0028] It also includes a crossbeam 10, which is provided with a speaker through hole. The top of the speaker through hole of the crossbeam 10 has a circular arc groove to contact the circular arc of the bottom surface of the step part of the transfer rod 9. At this time, the transfer rod 9 and the speaker through hole of the crossbeam 10 are spaced apart, such as Figure 2 As shown, after the arc of the bottom surface of the step portion of the transfer rod 9 contacts the groove under the arc at the top of the crossbeam 10, the center of gravity of the middle part of the transfer rod 9 is in a drooping state without deviation.

[0029] Since the tensile specimen 1 is screwed on the transfer rod 9 through the external threads of the upper clamping section 2 and the lower clamping section 3 for stretching, the specimen 1 is only subjected to the upper and lower tensile forces during stretching and is not subjected to the external lateral pressure to form deep marks, such as Figure 3 As shown, the problem that the sample is prone to breakage in the clamping section during stretching, resulting in experimental failure, is solved.

[0030] The gauge portion 4, the transition stage A5, the variable cut step A6, the transition stage B7, the variable cut step B8, the upper clamping section 2 and the lower clamping section 3 are integrally formed and fixed to form a tensile specimen 1. Figure 1 As shown, the tensile specimen 1 is made by machining tungsten-copper alloy.

[0031] The upper clamping section 2 and the lower clamping section 3 are M10×6h and have a length of 20mm; the variable-truncation step A6 and the variable-truncation step B8 are both cylinders with a diameter of 5.5mm and a length of 3mm; the transition stage A5 and the transition stage B7 are both cylinders with a diameter of 3.5mm and a length of 8mm; the gauge portion 4 is a cylinder with a diameter of 3mm and a length of 18mm.

Claims

1. A tensile test specimen for tungsten copper alloy, characterized in that: A tensile test specimen (1) which will not be deeply indented by external lateral pressure during the tensile test; The utility model comprises an upper clamping section (2), a lower clamping section (3) and a gauge length section (4) located between the upper clamping section (2) and the lower clamping section (3). External threads are arranged on the outside of the upper clamping section (2) and the lower clamping section (3).

2. The tensile test specimen for tungsten-copper alloy according to claim 1, characterized in that: A transition stage A (5) and a change-cut step A (6) are provided between the gauge length portion (4) and the upper clamping section (2); a transition zone (81) formed by a chamfer is provided between the gauge length portion (4) and the transition stage A (5); and a transition zone (81) formed by a chamfer is provided between the transition stage A (5) and the change-cut step A (6).

3. The tensile test specimen for tungsten-copper alloy according to claim 1, characterized in that: A transition stage B (7) and a change-cut step B (8) are provided between the gauge length portion (4) and the lower clamping section (3); a transition zone (81) formed by a chamfer is provided between the gauge length portion (4) and the transition stage B (7); and a transition zone (81) formed by a chamfer is provided between the transition stage B (7) and the change-cut step B (8).

4. The tensile test specimen for tungsten-copper alloy according to claim 1, characterized in that: It also includes a transfer rod (9) that can be screwed together with the external threads of the upper clamping section (2) and the lower clamping section (3).

5. The tensile test specimen for tungsten-copper alloy according to claim 4, characterized in that: The transfer rod (9) is T-shaped, and the bottom surface of the step portion of the T-shaped transfer rod (9) is an arc, and the center of the arc is located at the middle line of the transfer rod (9); the transfer rod (9) is provided with an internal thread hole to correspond to the external thread of the upper clamping section (2) and the lower clamping section (3).

6. The tensile test specimen for tungsten-copper alloy according to claim 5, characterized in that: It also includes a crossbeam (10), which is provided with a horn through hole. The top of the horn through hole of the crossbeam (10) is provided with a circular arc lower groove to contact the circular arc of the bottom surface of the step part of the transfer rod (9).

Images