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Device for testing cryogenic mechanical properties of material

A testing device and material testing machine technology, applied in measurement devices, analytical materials, scientific instruments, etc., can solve the problems of helium resource waste, complicated operation, high cost, meet the temperature requirements and avoid a lot of waste.

Pending Publication Date: 2017-08-01
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing material low-temperature mechanical property testing device uses a large amount of liquid nitrogen or liquid helium resources, high cost and complicated operation, resulting in waste of helium gas resources

Method used

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  • Device for testing cryogenic mechanical properties of material
  • Device for testing cryogenic mechanical properties of material

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Experimental program
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Embodiment 1

[0029] Such as figure 1 with figure 2 As shown, the material low-temperature mechanical performance testing device includes: a universal material testing machine, a mechanical support 13, a low-temperature refrigerator 3, a vacuum insulation barrel 21, a heat-resistant radiation barrel 22, a sample chamber 4, and a temperature controller 7; The universal material testing machine provides a mechanical power source (i.e. loading force) for the sample 6 to be tested. The universal material testing machine includes a base 2 and a support frame 1 arranged on the base 2, and the vacuum insulation barrel 21 is arranged on the base 2 Above, the support frame 1 is provided with a mechanical support 13 for rigid connection with the sample 6 to be tested, wherein the support frame 1 includes two parallel support rods 11 vertically arranged on the base 2, the The lower ends of the support rods 11 are connected to the base 2, and at least one crossbeam 12 is also provided between the two...

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Abstract

The invention relates to the field of materials' mechanical properties testing technology, especially to a device for testing cryogenic mechanical properties of a material. According to the device for testing cryogenic mechanical properties of a material, a refrigerating machine is used as a cold source, and helium in a sample chamber is used as a heat transfer medium but will not generate heat itself and can be recycled. Therefore, helium is hardly lost, and huge waste of helium resources is avoided. In addition, a vacuum pump is arranged between the sample chamber and a gas storage tank. The helium inside the sample chamber can be recovered into the gas storage tank through the vacuum pump. As temperature in the sample chamber cannot be reduced to 4.2 K only by the use of the refrigerating machine, pressure intensity in the sample chamber is reduced by the vacuum pump so as to further reduce the temperature in the sample chamber to meet the requirement on temperature.

Description

technical field [0001] The invention relates to the technical field of testing mechanical properties of materials, in particular to a device for testing low-temperature mechanical properties of materials. Background technique [0002] At present, with the development of my country's hydrogen energy, nuclear fusion energy, aerospace, applied superconductivity, gas industry, and some large scientific projects, there are more and more projects involving cryogenic engineering. In the field of industry and scientific research, the demand for low-temperature materials is increasing, and the performance data requirements for low-temperature materials are becoming more and more comprehensive. Materials work in a low temperature environment, and their low temperature physical properties are usually different from those at room temperature. Among them, the mechanical properties of materials are an important performance index of materials or workpieces in engineering. Testing the mec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02
CPCG01N3/02
Inventor 张恒成黄荣进李来风刘辉明徐冬韩叶茂沈福至李健赵玉强冷华倩李少鹏
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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