原油储罐用国产高强钢性能分析与工程实践

Performance Analysis and Engineering Practice of Domestic High Strength Steel Plate for Large Crude Oil Storage Tank

目前,国产高强度钢板已在10×10~4m^3及以上大型原油储罐的建造中得到广泛应用,打破了该型钢板长期依赖进口,受制于人的局面。通过总结国产高强度钢板的开发历程,全面介绍大型原油储罐用国产高强度钢板的技术性能,包括其生产技术路线、化学成分、力学性能、焊接裂纹敏感性、再热裂纹敏感性指数、大线能量焊接特性等,并结合工程应用实践,提出大型储罐对高强度钢板的性能要求。根据工程建设技术进步的需求,总结国产高强度钢板的工程应用经验,提出存在的问题和改进方向,对提高原油储罐用国产高强度钢板的性能指标以及质量水平,具有一定的指导意义。

At present,the domestic high strength steel plate has been widely used for the construction of large crude oil storage tanks of 100 thousand cubic meters and above.It has broken the dependence on importation of this type of steel plate for a long time.By summarizing the development process of high strength steel plate made in China,the technical performance of domestic high strength steel plate used for large storage tank are introduced,including its production technical route,chemical composition analysis,mechanical properties,welding crack sensitivity,sensitivity index of reheat crack,large line energy welding characteristics,etc.Combined with engineering practice,the performance requirements of large storage tanks for high strength steel plates are put forward.According to the demand of technological progress in engineering construction,the engineering application experience of high strength steel plate made in China is summarized and existing issues and improvement direction are proposed as well,which is of considerable practical significance.