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随着国内长输油气管道的建设和发展,适用于地震断裂带等大应变地区的高强度抗大变形管线钢得到有效开发和应用。基于目前国内对抗大变形管线钢的研究成果,分析和总结了抗大变形管线钢的设计基础(拉伸应变、压缩应变)和典型特点(双相组织、低的屈强比、高的均匀延伸率和形变强化指数、典型的拱顶型应力-应变曲线),从轧制工艺、化学成分、组织性能、焊接工艺、腐蚀性能等方面分别探讨了抗大变形管线钢的研究进展及其影响因素,概述了目前国内相关标准要求、钢厂和钢管厂加工制造水平以及抗大变形管线钢的研究应用现状,研究成果有利于抗大变形管线钢的应用和推广。
With the construction and development of long-distance oil and gas pipelines in China, the high strength and large deformation resistant pipeline steel suitable for large strain areas such as earthquake rupture zone have been effectively developed and applied. Based on the current domestic research results of large deformation pipeline steel, the design basis (tensile strain, compressive strain) and typical characteristics (duplex structure, low yield ratio, high uniform elongation Rate and deformation enhancement index, typical dome-type stress-strain curve), the research progress and influencing factors of pipeline steel with large deformation are discussed respectively from the aspects of rolling technology, chemical composition, microstructure and properties, welding process and corrosion performance , Summarizes the current domestic relevant standards, processing and manufacturing level of steel mills and steel mills, as well as research and application of anti-large deformation pipeline steel. The research results are beneficial to the application and promotion of large deformation resistant pipeline steel.