Tool for measuring post-fracture scale distance of metal material thin plate or thin strip in tensile test

Abstract

The utility model discloses a tool for measuring a scale distance after tensile test of a metal material thin plate or thin strip, and relates to the technical field of tensile test auxiliary equipment. Comprising a limiting mechanism, a strong magnetic mechanism, a working platform and a magnetic force control mechanism, the limiting mechanism comprises a limiting block vertically connected to the working platform, and the limiting block is used for positioning the fractured tensile sample; the strong magnetic mechanism comprises four strong magnet points which are horizontally and linearly distributed, the strong magnet points are fixedly connected to the working platform, the surfaces of the strong magnet points are flush with the working platform, and the strong magnet points are used for adsorbing the fractured tensile sample; the magnetic force control mechanism comprises four control switches used for controlling the point magnetic force of the strong magnets. The device is ingenious in structure and simple to operate, not only can improve the matching precision of the fractured sample, but also can effectively prevent the sample from moving during measurement, and shortens the time for matching the fractured sample and improves the measurement efficiency while improving the measurement accuracy of the scale distance after fracture.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for tensile testing, specifically a tool for measuring the gauge length after fracture in a tensile test of a thin sheet or strip of metal material. Background Technology

[0002] Elongation at break in tensile testing of metallic materials is an important performance indicator. It is calculated by measuring the gauge length of the specimen after fracture. The conventional method for measuring the gauge length involves placing the fractured specimen on a platform, manually joining the fragments together, and then measuring with vernier calipers. However, thin metal sheets and strips fracture after tensile testing, often exhibiting irregular deformations such as edge warping and tearing. These deformations significantly affect the joining accuracy, thus impacting the accuracy of the elongation at break measurement. Furthermore, placing the specimen on a platform lacks effective fixation, leading to specimen movement during measurement and requiring constant adjustments, thus reducing measurement efficiency. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a tool for measuring the gauge length after fracture in a tensile test of thin metal plates or strips. It solves the problems of low sample fitting accuracy and easy movement during measurement caused by irregular deformation, and improves measurement efficiency.

[0004] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a tool for measuring the gauge length after fracture in a tensile test of thin metal plates or strips, characterized in that: it includes a limiting mechanism, a strong magnetic mechanism, a working platform, and a magnetic control mechanism; the working platform is used to place the unfolded tensile specimen after fracture; the limiting mechanism includes a limiting block vertically connected to the working platform, the limiting block being used to position the tensile specimen after fracture; the strong magnetic mechanism includes four strong magnet points distributed horizontally in a straight line, the strong magnet points being fixedly connected to the working platform, with their surfaces flush with the working platform, for adsorbing the tensile specimen after fracture; the magnetic control mechanism includes four control switches for controlling the magnetic force of the strong magnet points.

[0005] The strong magnets are circular neodymium iron boron magnets, embedded in the working platform, with a spacing of 30-50 mm between each point and a diameter of 5-10 mm.

[0006] The control switch includes two positions, corresponding to the presence or absence of magnetic force at the strong magnet point.

[0007] This invention provides a tool for measuring the gauge length after fracture in a tensile test of thin metal plates or strips. It features an ingenious structure and simple operation. A controllable neodymium iron boron magnet is embedded in the work platform. After manually fitting the fractured specimen, the magnetic switch is turned on to fix the specimen in place. This invention not only improves the fitting accuracy of the fractured specimen and ensures the accuracy of the elongation at fracture results, but also effectively prevents specimen movement during measurement. While improving the accuracy of gauge length measurement, this invention also shortens the fitting time for the fractured specimen, thus increasing measurement efficiency. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model.

[0009] Figure 2 This is a diagram showing the usage state of this utility model.

[0010] In the diagram: 1. Limiting block; 2. Strong magnet point; 3. Working platform; 4. Control switch; 5. Tensile test specimen after fracture. Detailed Implementation

[0011] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0012] Example 1

[0013] like Figure 1 , Figure 2 The tool shown is for measuring the gauge length after fracture in a tensile test of a thin sheet or strip of metal material. It includes a limiting mechanism, a strong magnetic mechanism, a working platform 3, and a magnetic control mechanism. The working platform 3 is used to place the unfolded tensile specimen 5. The limiting mechanism includes a limiting block 1 vertically connected to the working platform 3, which is used to position the tensile specimen 5. The strong magnetic mechanism includes four strong magnet points 2 arranged horizontally in a straight line. The strong magnet points 2 are fixedly connected to the working platform 3, with their surfaces flush with the working platform 3, and are used to attract the tensile specimen 5. The magnetic control mechanism includes four control switches 4 for controlling the magnetic force of the strong magnet points 2.

[0014] The strong magnet point 2 is a circular neodymium iron boron strong magnet, which is embedded on the working platform 3. The distance between each point is 30 mm, and the diameter of the magnetic point is 5 mm.

[0015] The control switch 4 includes two positions, which correspond to the presence or absence of the magnetic force at the strong magnet point 2.

[0016] This embodiment uses a tinplate sheet sample as an example to illustrate the specific operating steps of a tool for measuring the gauge length after fracture in a tensile test of a thin sheet or strip of metallic material, as described in Example 1:

[0017] Tinplate sheets are typically between 0.5 mm and 0.8 mm thick. After fracture, the specimen is prone to arc-shaped deformation at the fracture site, making it difficult to fit the specimens together. Furthermore, due to the thinness of the specimens, they are prone to movement during measurement.

[0018] Place the tensile test specimen 5 on the working platform 3, with one side of the specimen resting against the root or upper edge of the limiting block 1, parallel to the limiting block 1. Manually assemble the tensile test specimen 5 and place the assembled specimen flat on the strong magnet point 2, with the fracture point of the specimen located between the two strong magnet points 2 in the middle. Activate the control switch 4, and the specimen will be attracted to the working platform 3. Then, use a vernier caliper to measure the elongation after fracture.

[0019] Example 2

[0020] The tool for measuring the gauge length after fracture in a tensile test of a thin sheet or strip of metal described in this embodiment is the same as that in Embodiment 1 in terms of the structure and connection relationship of each part. The difference is that the spacing between each point of the strong magnet 2 is 40 mm, and the diameter of the magnetic point is 7 mm.

[0021] Example 3

[0022] The tool for measuring the gauge length after fracture in a tensile test of a thin sheet or strip of metal described in this embodiment is the same as that in Embodiment 1 in terms of structure and connection. The difference is that the strong magnet point 2 is a circular neodymium iron boron strong magnet, which is embedded in the working platform 3. The distance between each point is 50 mm, and the diameter of the magnetic point is 10 mm.

[0023] The embodiments of this utility model have been disclosed above, but they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A tool for measuring gauge length after tensile test break of a thin sheet or strip of metal material, characterized in that: The utility model relates to a kind of magnetic force control mechanism, including limiting mechanism, strong magnetic mechanism, working platform (3), the working platform (3) is used to place the broken stretch sample (5) of unfolding;The limiting mechanism includes the limiting block (1) vertically connected on working platform (3), the limiting block (1) is used to position broken stretch sample (5);The strong magnetic mechanism includes four strong magnetic points (2) of horizontal linear distribution, the strong magnetic point (2) is fixedly connected on working platform (3), surface is flush with working platform (3), for adsorbing broken stretch sample (5);The magnetic force control mechanism includes four control switches (4) for controlling the magnetic force of strong magnetic point (2).

2. The tool for measuring gauge length after tensile test of a thin sheet or strip of a metallic material according to claim 1, characterized in that: The strong magnetic point (2) is a circular neodymium iron boron strong magnet, inlaid on the working platform (3), the distance between each point is 30-50mm, and the diameter of the magnetic point is 5-10mm.

3. The tool for measuring gauge length of a thin sheet or strip of metal material after tensile test according to claim 1, wherein: The control switch (4) includes two positions of switch, respectively corresponding to the presence or absence of the magnetic force of strong magnetic point (2).

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