Flaky sample stress corrosion loading device and using method

A technology of loading device and sheet-like sample, applied in the direction of measuring device, weather resistance/light resistance/corrosion resistance, and application of stable tension/pressure test material strength, etc., can solve the problem of lack of key materials, and achieve simple structure design , Loading load can prevent the effect of rotation or twisting deformation

Pending Publication Date: 2020-08-25
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, we still seriously lack the basic data of key materials,

Method used

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  • Flaky sample stress corrosion loading device and using method
  • Flaky sample stress corrosion loading device and using method
  • Flaky sample stress corrosion loading device and using method

Examples

Experimental program
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Embodiment

[0061] In the embodiment, the spring is made of 65Mn steel, with a wire diameter of 6mm, an inner diameter of 12mm, a total length of 70mm, a total number of turns of 9.5, a maximum compression of 15mm, and a Hooke coefficient of 316.8N / mm. The surface of the spring is painted with Prevent the spring from corroding during the test; the rest of the loading device is made of 304 stainless steel; the sheet test is a solid solution 304 stainless steel sample, the length of the sample gauge section is 50mm, the width is 10mm, and the thickness is 1mm. The yield strength of solid solution 304 stainless steel (σ s ) is 289MPa; according to the test requirements, the loading load is 1.0σ s , The compression of the spring is 9.12mm. Figure 8 A diagram of the different parts of the loading device. Figure 9 It is the physical picture after installing the sample and carrying out constant load loading. The loading device can study the stress corrosion-related properties of 304 stainle...

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Abstract

The invention relates to the field of stress corrosion testing, in particular to a flaky sample stress corrosion loading device and a using method. The loading device supporting plate is matched withthe notches in the lower edges of the two fixing plates and then is connected with the notches through fastening screws. Grooves are formed in the two studs, through holes with convex surfaces are formed in the two fixing plates, and the grooves of the two studs are matched with the convex surfaces of the through holes in the two fixing plates. One end of each of the two studs is in threaded connection with the sample chuck. The other end of the short stud is connected with the nut. The other end of the long stud is provided with a spring and a gasket and is finally connected with a nut, and two ends of the sheet sample are respectively clamped at the gaps of the two sample chucks and are fastened by two pins to form the loading device. The device is ingenious in design, simple and convenient to operate, low in cost and suitable for stress corrosion testing in a normal-temperature and normal-pressure corrosion environment, and can also be used for stress corrosion testing in a high-temperature and high-pressure environment when a special corrosion-resistant alloy is adopted for processing and preparation.

Description

technical field [0001] The invention relates to the field of stress corrosion testing, in particular to a sheet-shaped sample stress corrosion loading device and a use method. Background technique [0002] Stress corrosion is the result of the joint action of corrosive environment, material and stress (such as: residual stress, engineering stress, etc.). Stress corrosion failure is a very common failure form, which widely exists in various industrial and natural environments such as petrochemical, marine engineering, and nuclear power plants. Stress corrosion often leads to leakage or fracture of key equipment components, which can easily cause huge losses. Therefore, in the material selection and life prediction and evaluation of key equipment components, stress corrosion susceptibility is a very critical data. In order to quickly study the stress corrosion sensitivity of materials, technicians and researchers in various industries have formulated a large number of experi...

Claims

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Application Information

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IPC IPC(8): G01N3/14G01N3/04G01N3/06G01N17/00
CPCG01N3/04G01N3/062G01N3/14G01N17/00G01N2203/0019G01N2203/0035G01N2203/024G01N2203/0282G01N2203/0423G01N2203/0605G01N2203/0682
Inventor 明洪亮石珅鲍一晨孟凡江王俭秋韩恩厚刘晓强石秀强
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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