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Rotating and bending corrosion fatigue testing device

An experimental device and corrosion fatigue technology, applied in the direction of applying repeated force/pulsation force to test the strength of materials, test wear resistance, etc., can solve the problems that the data cannot be used as the basis for engineering design, and cannot truly reflect the working state, etc., to achieve structural Simple, easy-to-use effects

Inactive Publication Date: 2008-07-16
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different load application methods, this test method cannot truly reflect the working state of the material when it is subjected to alternating bending loads in a corrosive environment, so the obtained data cannot be used as the basis for engineering design.

Method used

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  • Rotating and bending corrosion fatigue testing device

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Experimental program
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Effect test

Embodiment 1

[0016] The device shown in Figure 1 includes a corrosive liquid supply system composed of a liquid storage tank 2, a valve 3, an infusion pump 5, a pipeline 1, and a recovery tank 6, and a rotating fatigue test device 8, wherein the rotating fatigue test device 8 adopts an existing The experimental device that has, this experimental device is equipped with loading weight 7 by itself. The test piece 4 is mounted on the rotating fatigue test device 8, the liquid storage tank 2 and the corrosive liquid output port of the corrosive liquid supply system are set above the test piece 4, and the recovery tank 6 is set under the test piece 4.

[0017] During the experiment, the rotating fatigue test device 8 drives the test piece 4 to rotate, and uses the loading weight 7 to apply a bending load to it. At the same time, the corrosive test solution drips on the surface of the test piece 4 through the pipeline under the action of gravity, so that the test solution Continuously dripping o...

Embodiment 2

[0020] FIG. 2 is a schematic diagram of the second embodiment of the present invention, and the settings of the infusion pipeline 1 and the valve 3 are the same as those in the first embodiment. However, in this embodiment, after the test solution drops into the recovery tank 5, it is not recycled and stored directly. It is suitable for testing the corrosion fatigue performance of materials in highly volatile media.

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Abstract

The invention discloses a rotary bending corrosion fatigue test device. The device includes a rotary bending fatigue test device and a corrosion liquor supplying system; wherein, the rotary bending fatigue test device is used for mounting a test piece and applies bending load on the test piece during the process of driving the test piece to rotate and realizes the test on the fatigue data of the test piece. The corrosion liquor supplying system includes a liquor storage tank, a transfusion pump, a flow adjusting valve and a connecting pipeline. The corrosion liquor supplying system feeds the corrosion liquor to the test piece during testing in real time from an output opening. The invention realizes the testing on the middle, high cycle and ultra-high cycle corrosion fatigue performance of the material by adding the corrosion liquor supplying system based on the existing rotary bending fatigue test device machine. As the design of the test device is approximate to an engineering design, the measured result by using the device has a greater reference value to the engineering design. The corrosion fatigue test device of the invention has the advantages of simple structure and convenient operation, and can get standardized test results.

Description

technical field [0001] The invention relates to material fatigue test technology, in particular to a rotating bending corrosion fatigue test device. Background technique [0002] Corrosion fatigue of materials has always been a concern in the engineering and scientific communities. Many equipment and mechanisms in engineering are subjected to the dual effects of alternating loads and medium environments during their service period, that is, they are subject to corrosion fatigue. Therefore, how to test the corrosion fatigue performance of materials is an important issue in the research of material fatigue. [0003] In the past, when people performed corrosion fatigue tests on materials, they usually completely immersed the material specimens in the corrosive solution, and applied pressure and tension alternately at both ends of the specimens, so as to obtain the corrosion fatigue data of the materials. Due to the different load application methods, this test method cannot t...

Claims

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Application Information

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IPC IPC(8): G01N3/36G01N3/56
Inventor 钱桂安
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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