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Welded joint force-corrosion coupling testing experimental method and welded joint force-corrosion coupling testing experimental device

An experimental device and testing device technology, which is applied in the direction of measuring device, applying stable tension/pressure to test material strength, weather resistance/light resistance/corrosion resistance, etc., can solve the problem that the preset deformation of weld metal and base metal cannot be obtained, etc. question

Active Publication Date: 2016-08-24
TIANJIN UNIV
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  • Abstract
  • Description
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Problems solved by technology

Therefore, the pre-determined deformation of the weld metal and the base metal cannot be obtained with the conventional force-enforced frame and testing device

Method used

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  • Welded joint force-corrosion coupling testing experimental method and welded joint force-corrosion coupling testing experimental device
  • Welded joint force-corrosion coupling testing experimental method and welded joint force-corrosion coupling testing experimental device
  • Welded joint force-corrosion coupling testing experimental method and welded joint force-corrosion coupling testing experimental device

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0024] An experimental device for the coupling test of welded joint force corrosion: the autoclave body is a cylindrical container, a heating device is installed outside the autoclave body, a thermal insulation layer is arranged outside the heating device, and a heat preservation layer is installed on the upper surface of the autoclave body For the autoclave cover, the fastening bolts pass through the fixed installation holes and are connected to the connecting part of the autoclave body, so that the autoclave cover and the autoclave body are fastened into a whole and sealed, and the circular surface of the autoclave cover is arranged in turn along the diameter direction There are: the first air intake pipe hole, the second air intake pipe hole, the feeding hole, the pressure sensor hole and the air outlet pipe hole, wherein the first air intake ...

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Abstract

The invention discloses a welded joint force-corrosion coupling testing experimental method and a welded joint force-corrosion coupling testing experimental device. The welded joint force-corrosion coupling testing experimental device is characterized in that a heating device is arranged on the outer side of an autoclave body, a heat insulation layer is arranged on the outer side of the heating device, an autoclave cover is arranged on the upper surface of the autoclave body, a first gas inlet pipe, a second gas inlet pipe, a gas outlet pipe, an auxiliary feeding device, a pressure sensor and a pressure gauge are arranged on the round surface of the autoclave cover sequentially along the diameter direction, a testing device is arranged at the inner bottom of the autoclave body, a tensile test specimen is arranged between a left chuck and a right chuck, an extensometer is arranged above the tensile test specimen, and a strain gauge is arranged below the tensile test specimen. The welded joint force-corrosion coupling testing experimental method and the welded joint force-corrosion coupling testing experimental device have the advantages that required strain is applied to a welded joint successfully and strain in the welded joint and parent metal positions are obtained to study effect of deformation on corrosion of different portions of the welded joint so as to evaluate the service environment of the welded joint.

Description

technical field [0001] The invention belongs to the technical field of environmental corrosion, and more specifically relates to an experimental method and device for coupling testing of welded joint force and corrosion. Background technique [0002] Under the dual effects of specific medium environment and tensile stress, the phenomenon of cracks and fractures of metal materials after a certain period of time is called stress corrosion cracking. Because of its unpredictable low stress brittle fracture, which often leads to accidents and a large amount of material loss, it is very harmful. Scholars at home and abroad have been paying attention to and devoting themselves to the research on related issues of metal stress corrosion. At present, the common principles of stress corrosion test are: constant deformation stress corrosion test method, constant load stress corrosion test method and prefabricated crack sample stress corrosion test method. Among them, the constant def...

Claims

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Application Information

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IPC IPC(8): G01N17/00G01N3/18
CPCG01N3/18G01N17/006G01N2203/0003G01N2203/0017G01N2203/0035G01N2203/0075G01N2203/0226G01N2203/0232G01N2203/024G01N2203/0252G01N2203/0268G01N2203/0682
Inventor 荆洪阳孙瑞文路永新徐连勇韩永典
Owner TIANJIN UNIV
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