The working environment of pipelines not only puts forward high-strength, high-toughness, and excellent welding performance requirements for pipeline steel, but also puts forward strict standards for resistance to hydrogen-induced cracking. HIC refers to the cracks generated inside the steel due to the absorption of hydrogen generated by the corrosion of the steel in an acid environment called hydrogen-induced cracking. HIC, as a kind of defect, exists in steel and has no unified understanding of its influence on service performance. However, a lot of research and field practice show that this kind of HIC generated without external force can be regarded as having a direct effect on the diffusion behavior of hydrogen. Not only are there significant differences in the mechanical properties of various steel pipes, but there are also large differences in their corrosion resistance, especially HIC resistance. The behavior of hydrogen in the HIC-sensitive welding zone, which is one of the hydrogen sources, is very important. However, the diffusion of hydrogen in the corrosion medium of the pipeline is different from the hydrogen diffusion behavior of other steel plates, because the diffusion behavior of hydrogen in the pipeline is affected by many aspects, including the temperature of the corrosion medium, the partial pressure of hydrogen sulfide, the pH value and other factors will be It plays an important role in hydrogen diffusion. Through this system, the dynamic distribution of diffusion hydrogen in the welding zone can be visually and quantitatively analyzed. However, it should be pointed out that although some research results have been achieved in hydrogen diffusion and aggregation behavior, due to the fact that no suitable physical model and mathematical equations can be found to describe this process. Therefore, it is not possible to use purely numerical analysis methods to simulate hydrogen behavior, and can only rely on the method of combining numerical analysis and experimental techniques, that is, using numerical analysis methods for data processing and prediction on the basis of experimental measurements. No matter what kind of corrosion system, in order to prevent the corrosion of the welded joint, the welding process should be done as much as possible: (1) Ensure that no hardened tissue occurs; (2) Prevent grain coarsening; (3) Strive to make the organization of welding heat affected zone uniform; (4) Reduce welding residual stress. Therefore, the application of modern computer technology for pipeline welding and corrosion research is the frontier field of materials research. With the continuous development of science and technology, the research in this field will continue to deepen. For the welding process of pipeline steel laying, use modern computer technology for welding temperature field simulation? The accuracy of numerical simulation of hydrogen behavior in welding and corrosion has been continuously improved. However, due to the extremely complicated process of welding metallurgy, a lot of in-depth research work is still required, and the establishment of a comprehensive and accurate mathematical model is still the direction of future efforts. For pipelines in operation, corrosion and protection involve the failure and maintenance of pipelines. The application of modern computer technologies such as: information processing, artificial neural networks, databases, etc. provides a useful tool for studying corrosion and protection of pipelines. With the rapid development of computer technology, it is bound to promote the advancement of disciplines in the field of material corrosion and protection, thereby saving energy and benefiting mankind. Garden Pot,Plant Pots,Flower Pots,Outdoor Plant Pots Yixing Bocai Pottery Co.,Ltd , https://www.bocaipottery.com
Computer technology for pipeline welding and corrosion research
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