Nondestructive flaw detection
2016-11-11 Rongda test 377 times
Detection Purpose: To test the material's resistance to hydrogen sulfide stress corrosion cracking
Detection range: Petroleum pipeline, pressure vessel, boiler, liquefied gas tank, valve, flange, weld, carbon steel,
Sulfide Stress Corrosion （SSCC or SSC ） is a special type of Stress Corrosion (SCC), but with as Stress Corrosion, in as Stress Corrosion, the role of the environment is based on the anodic dissolution is given priority to, and SSC is mainly on cathodic hydrogen. At present, SSC mechanism has not been fully revealed, but at present, most scholars tend to believe that this cracking is caused by hydrogen, and sulfur ion or hydrogen sulfide has a certain role in promoting the diffusion of hydrogen into the material. In oil and natural gas (especially natural gas) long-distance pipelines, sulfide stress corrosion cracking of high-pressure and high-strength pipelines will lead to major safety accidents. Therefore, it is necessary to evaluate the SSC resistance performance of pipeline steel to ensure the safety of pipelines.
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