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A clamping device for a metal thin plate high-temperature tensile sample and its application method

A technology for clamping devices and tensile samples, applied to measuring devices, using stable tension/pressure to test material strength, instruments, etc., can solve problems such as complex structures, affecting test efficiency, cumbersome operations, etc., and achieve device structure Small size, good coaxiality, and easy-to-use effects

Active Publication Date: 2021-04-02
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing clamping methods that can meet the test requirements generally have problems such as complex structure and cumbersome operation, which seriously affect the test efficiency

Method used

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  • A clamping device for a metal thin plate high-temperature tensile sample and its application method
  • A clamping device for a metal thin plate high-temperature tensile sample and its application method
  • A clamping device for a metal thin plate high-temperature tensile sample and its application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] As shown in the accompanying drawings, a clamping device for a high-temperature tensile sample of a metal sheet, the two ends of the sample 6 are provided with fixing parts, and each fixing part is provided with a pin hole, and the clamping device passes through The pin hole clamps and fixes the sample 6. The clamping device includes a clamp body 1 and a clamping part 2 connected to the clamp body 1. One end of the clamp body 1 is provided with a threaded hole 101, and the threaded hole A connecting rod is installed in 101, and one end of the connecting rod away from the threaded hole 101 is connected to the tensile test equipment, and the other end of the clamp body 1 is provided with a clamping part 2 integrally arranged with the clamp body, so The end of the clamping part 2 away from the threaded hole 101 is provided with a groove 201 with an isosceles trapezoidal cross section, and the groove 201 extends along the end of the clamping part 2 to one side of the clamp b...

Embodiment 2

[0059] According to the clamping device and its use method in Example 1, the material of the thin metal plate is selected as Ti70, the thickness of the thin metal plate is δ=1.5mm, and the test temperature of the high-temperature furnace is 600°C. A high-temperature tensile test is carried out, and the obtained Stress-strain curve see Figure 7 .

Embodiment 3

[0061] According to the clamping device and the method of use thereof in Example 1, the material of the thin metal plate is selected as Ti31, the thickness of the thin metal plate is δ=0.7mm, and the test temperature of the high-temperature furnace is 350°C. A high-temperature tensile test is carried out, and the obtained Stress-strain curve see Figure 8 .

[0062] It can be seen from Example 2 and Example 3 that using the clamping device of the present invention and its method of use to carry out high-temperature tensile tests, the use of wedge-shaped gaskets I3 and wedge-shaped gaskets II4 can complete the high-temperature testing of metal sheets of multiple specifications. Tensile test, after the end of the test, no obvious deformation was seen at the fixed end of the sample, and the linearity of the elastic segment in the obtained stress-strain curve was good, indicating that the universality and usability of the clamping device and its method of use of the present invent...

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Abstract

The invention provides a clamping device for a high-temperature tensile sample for a metal sheet. The clamping device comprises a clamp body and a clamping part connected to the clamp body, wherein agroove is formed in one end, far from a threaded hole, of the clamping part; and a wedge-shaped gasket I, an annular gasket I, a sample, an annular gasket II and a wedge-shaped gasket II are sequentially arranged in the groove, a guiding slot I which extends downwards and has a U-shaped longitudinal section is formed in the top end of the wedge-shaped gasket I, a fixed block I is arranged at the bottom end of the wedge-shaped gasket I, a guiding slot II which extends downwards and has a U-shaped longitudinal section is formed in the top end of the wedge-shaped gasket II, a fixed block II is arranged at the bottom end of the wedge-shaped gasket II, and a fixed pin sequentially penetrates through the through hole I, the annular gasket I, a sample, the annular gasket II and a through hole IIso as to fix the sample to the clamping part. The clamping device has the characteristics of small size, simplicity and convenience in operation and the like, and the centering and fixation of the sample can be easily finished, so that the purposes of shortening the test preparation period and improving the test efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of testing the mechanical properties of metal materials, in particular to a clamping device for a high-temperature tensile sample of a thin metal plate and a method for using the same. Background technique [0002] When conducting high-temperature tensile tests on metal sheets in the laboratory, pins are usually used to connect dumbbell-shaped plate samples with pin holes processed at the clamping end to U-shaped high-temperature tensile fixtures, and separate the two sides of the pin holes. Add gaskets of appropriate thickness to limit lateral deformation on both sides of the pin hole to meet the requirements of the test standard. However, in actual operation, since the gasket and the sample must be put into the U-shaped fixture, the total thickness of the gasket and the clamping end of the sample must be less than the distance between the two side walls of the U-shaped fixture, and the two sides of the sam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/04G01N3/18
CPCG01N3/04G01N3/18G01N2203/0017G01N2203/0226G01N2203/0282G01N2203/04
Inventor 张先锋杜卓同
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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