Tensile sample of ultrathin cold-rolled steel strip
By designing a clamping section structure with clamping plates and openings, the problem of insufficient load-bearing capacity of ultra-thin cold-rolled steel strip tensile tests in tensile tests is solved, the accuracy and success rate of the test results are improved, and the Deformation and breakage of the clamping section.
Patent Information
- Application Number
- CN202420809308.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-17
AI Technical Summary
The clamping sections of the existing ultra-thin cold-rolled steel strip tensile samples are prone to deformation and fracture during tensile tests, resulting in a decrease in test accuracy and high failure efficiency. Especially, the thinner the ultra-thin sample, the higher the failure efficiency. .
An ultra-thin cold-rolled steel strip tensile sample including a stretching section and two clamping sections is designed, and the clamping section is provided with a first section, a second section and a third section in the width direction of the stretching section. , the first section is protruded away from the second section to form a clamp plate, and the second section and the third section are connected to the connecting point, and the second section can be bent to fit the first section side. , the third section can be bent against the other side of the first section, so that the clamp plate can pass through the opening, and improve the structural strength and deformation resistance of the clamping section.
It effectively improves the accuracy and success rate of the detection results of the ultra-thin cold-rolled steel strip tensile samples, avoids cracking problems in the tensile test of the clamping section, and improves the structural strength and bearing capacity of the clamping section.
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Figure CN222318628U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of mechanical testing, and in particular to a tensile test specimen of an ultra-thin cold-rolled steel strip. Background Art
[0002] Ultra-thin cold-rolled steel strip for electronic components is a kind of metal material with good plasticity, elongation and other processing properties. The thickness of this type of ultra-thin cold-rolled steel strip is usually less than 1 mm. When conducting a tensile test on the tensile specimen of this ultra-thin cold-rolled steel strip with reference to the national standard GB / T 228.1-2021 (Tensile test of metallic materials Part 1: Room temperature test method), it is necessary to clamp the clamping sections at both ends of the ultra-thin cold-rolled steel strip specimen for stretching, so that the tensile section in the middle of the ultra-thin cold-rolled steel strip specimen is broken to detect the tensile properties.
[0003] However, the clamping section of the existing ultra-thin cold-rolled steel strip tensile specimen is prone to deformation and fracture under the action of the clamping force, resulting in a decrease in test accuracy or test failure. The thinner the ultra-thin cold-rolled steel strip tensile specimen, the higher the test failure rate, resulting in a waste of resources and time, which is not conducive to accurate and efficient tensile testing. Utility Model Content
[0004] The purpose of the present application is to provide a tensile specimen of an ultra-thin cold-rolled steel strip, which can solve the problems of insufficient load-bearing capacity and easy cracking of the existing tensile specimens of ultra-thin cold-rolled steel strip during the tensile test, and improve the accuracy of the test results and the success rate of the test.
[0005] This application is implemented as follows:
[0006] The present application provides a tensile test specimen of an ultra-thin cold-rolled steel strip, which comprises a tensile section and two clamping sections respectively arranged at both ends of the tensile section, the clamping section comprises a first section, a second section and a third section arranged in sequence along the width direction of the tensile section, the first section is connected to the end of the tensile section, one side of the first section away from the second section is raised to form a clamping plate, and an opening is provided at the connection between the second section and the third section; the second section can be bent to fit one side of the first section and the third section can be bent to fit the other side of the first section, so that the clamping plate passes through the opening.
[0007] In some optional embodiments, both sides of the connection between the first section and the second section are respectively recessed to form a first groove.
[0008] In some optional embodiments, both sides of the connection between the second section and the third section are respectively recessed to form a second groove.
[0009] In some optional embodiments, the angle between the side edge of the card plate close to the stretching section and the side edge of the first section away from the second section is less than 90 degrees.
[0010] In some optional embodiments, one side of the clamping plate close to the stretching section is aligned with the inner wall of the opening close to the stretching section.
[0011] In some optional embodiments, the clamping plate is an isosceles trapezoid and the short base is connected to the first section.
[0012] In some optional embodiments, the openings extend along the length of the stretch section.
[0013] In some optional embodiments, the first section, the second section and the third section are rectangles of the same size and shape.
[0014] In some optional embodiments, the opening is provided at the connection between the second section and the third section away from one end of the stretching section.
[0015] The beneficial effects of the present application are as follows: the tensile test specimen of the ultra-thin cold-rolled steel strip provided by the present application comprises a tensile section and two clamping sections respectively arranged at both ends of the tensile section, the clamping section comprises a first section, a second section and a third section arranged in sequence along the width direction of the tensile section, the first section is connected to the end of the tensile section, a side of the first section away from the second section is raised to form a clamping plate, and an opening is provided at the connection between the second section and the third section; the second section can be bent to fit one side of the first section and the third section can be bent to fit the other side of the first section, so that the clamping plate passes through the opening. The tensile test specimen of the ultra-thin cold-rolled steel strip provided by the present application can solve the problems of insufficient load-bearing capacity and easy cracking of the tensile test specimen of the existing ultra-thin cold-rolled steel strip during the tensile test, and improve the accuracy of the test results and the success rate of the test. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 A schematic diagram of the structure of a tensile specimen of an ultra-thin cold-rolled steel strip provided in an embodiment of the present application;
[0018] Figure 2 A schematic diagram of the structure of the second section of the tensile test specimen of the ultra-thin cold-rolled steel strip provided in an embodiment of the present application when it is bent to a point where it is about to fit into the first section;
[0019] Figure 3 This is a schematic diagram of the structure when the second section of the tensile specimen of the ultra-thin cold-rolled steel strip provided in an embodiment of the present application is bent to fit one side of the first section and the third section is bent to fit the other side of the first section.
[0020] In the figure: 100, stretching section; 110, clamping section; 111, first section; 112, second section; 113, third section; 114, clamping plate; 115, opening; 120, first groove; 130, second groove. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0027] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0028] The characteristics and performance of the tensile specimen of the ultra-thin cold-rolled steel strip of the present application are further described in detail below in conjunction with the embodiments.
[0029] like Figure 1 , Figure 2 and Figure 3As shown, an embodiment of the present application provides a tensile specimen of an ultra-thin cold-rolled steel strip, which includes a tensile section 100 and two clamping sections 110 respectively arranged at both ends of the tensile section 100; each clamping section 110 includes a first section 111, a second section 112 and a third section 113 arranged in sequence along the width direction of the tensile section 100, the first section 111, the second section 112 and the third section 113 are rectangles of the same size and shape, and one end of the first section 111 is connected to the end of the tensile section 100; a side of the first section 111 away from the second section 112 is raised to form a clamping plate 114, the clamping plate 114 is an isosceles trapezoid and the short base is connected to the first section 111, and the angle between the two waists of the clamping plate 114 and the side of the first section 111 away from the second section 112 is 80 degrees. The two sides of the connection between the first section 111 and the second section 112 are respectively recessed to form a first groove 120, and the two sides of the connection between the second section 112 and the third section 113 are respectively recessed to form a second groove 130. The connection between the second section 112 and the third section 113 is provided with an opening 115 extending along the length direction of the stretching section 100. The opening 115 is provided at the connection between the second section 112 and the third section 113 away from the stretching section 100. The side of the clamping plate 114 close to the stretching section 100 is aligned with the inner wall of the side of the opening 115 close to the stretching section 100; the second section 112 can be bent to fit one side of the first section 111 and the third section 113 can be bent to fit the other side of the first section 111, so that the clamping plate 114 passes through the opening 115.
[0030] Before using the tensile test specimen of the ultra-thin cold-rolled steel strip provided in the embodiment of the present application, the two clamping sections 110 are folded respectively. When folding, the second section 112 of the clamping section 110 is first bent along the imaginary line A at the connection between the first section 111 and the second section 112, so that the second section 112 is bent to be close to one side of the first section 111, and then the third section 113 is bent along the imaginary line B at the connection between the second section 112 and the third section 113, so that the third section 113 is bent to be close to the other side of the first section 111, and the protruding clamping plate 114 on the side of the first section 111 away from the second section 112 is passed through the opening 115 provided at the connection between the second section 112 and the third section 113, and then the second section 112 is bent to be close to one side of the first section 111, and then the third section 113 is bent to be close to the other side of the first section 111.
[0031] By performing secondary bending and folding of the clamping sections 110 at both ends of the tensile test specimen of the ultra-thin cold-rolled steel strip along the width direction of the tensile section 100, the structural strength of the clamping section 110 can be effectively improved and the size of the clamping section 110 after bending and folding can be kept in accordance with the national standard GB / T228.1-2021 "Metallic Material Tensile Test Part 1: Room Temperature Tensile Method" to facilitate the tensile test. When bending and folding, the protruding card plate 114 on one side of the first section 111 away from the second section 112 passes through the opening 115 provided at the connection between the second section 112 and the third section 113. The card plate 114 and the opening 115 can be used for positioning to ensure the position accuracy during bending and folding. During the tensile test, the second section 112 and the third section 113 can be subjected to force at the same time to disperse the stress to improve the deformation resistance of the clamping section 110 and improve the strength of the clamping section 110. The card plate 114 passing through the opening 115 can also be used to limit the position of the second section 112 and the third section 113 to avoid the second section 112 and the third section 113 being subjected to force to slide along the length direction of the tensile section 100 during the tensile test, resulting in deformation and fracture.
[0032] The two sides of the connection between the first section 111 and the second section 112 are respectively recessed to form a first groove 120, and the two sides of the connection between the second section 112 and the third section 113 are respectively recessed to form a second groove 130. The first groove 120 and the second groove 130 can be used to facilitate the positioning and alignment of the second section 112 and the third section 113 relative to the first section 111 and the second section 112 when they are bent, and at the same time, the stress at both ends of the connection between the first section 111 and the second section 112 and the second section 112 and the third section 113 can be reduced, thereby improving the structural strength of the clamping section 110 after bending and folding.
[0033] Compared with the tensile test specimen of ultra-thin cold-rolled steel strip in the existing national standard, the tensile test specimen of ultra-thin cold-rolled steel strip provided in the embodiment of the present application does not need to be fixed by punching and pinning, and the clamping section 110 has high structural strength and large load-bearing limit and is not prone to breakage.
[0034] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.
Claims
1. A tensile specimen of an ultra-thin cold-rolled steel strip, comprising a tensile section and two clamping sections respectively arranged at both ends of the tensile section, characterized in that: The clamping section includes a first section, a second section and a third section arranged in sequence along the width direction of the stretching section, the first section is connected to the end of the stretching section, a side of the first section away from the second section is raised to form a clamping plate, and an opening is provided at the connection between the second section and the third section; the second section can be bent to fit one side of the first section and the third section can be bent to fit the other side of the first section, so that the clamping plate passes through the opening.
2. The tensile test specimen of the ultra-thin cold-rolled steel strip according to claim 1, characterized in that: Both sides of the connection between the first section and the second section are respectively recessed to form a first groove.
3. The tensile test specimen of the ultra-thin cold-rolled steel strip according to claim 1, characterized in that: Both sides of the connection between the second section and the third section are respectively recessed to form a second groove.
4. The tensile test specimen of the ultra-thin cold-rolled steel strip according to claim 1, characterized in that: An angle between a side edge of the clamping plate close to the stretching section and a side edge of the first section away from the second section is less than 90 degrees.
5. The tensile test specimen of the ultra-thin cold-rolled steel strip according to claim 1, characterized in that: A side edge of the clamping plate close to the stretching section is aligned with an inner wall of the opening close to the stretching section.
6. The tensile test specimen of the ultra-thin cold-rolled steel strip according to claim 1, characterized in that: The clamping plate is an isosceles trapezoid and a short bottom side is connected to the first section.
7. The tensile test specimen of the ultra-thin cold-rolled steel strip according to claim 1, characterized in that: The opening extends along the length direction of the stretching section.
8. The tensile test specimen of the ultra-thin cold-rolled steel strip according to claim 1, characterized in that: The first section, the second section and the third section are rectangular with the same size and shape.
9. The tensile test specimen of the ultra-thin cold-rolled steel strip according to claim 1, characterized in that: The opening is arranged at a connection between the second section and the third section away from one end of the stretching section.