基于中薄板坯X90管线钢卷板的研发
Research and development of X90 pipeline steel coil based on medium-thin slab
孔祥磊 1刘干 1王杨 1黄明浩 1黄国建 1张英慧1
作者信息
- 1. 海洋装备用金属材料及其应用国家重点实验室,辽宁 鞍山 114009;鞍钢集团钢铁研究院,辽宁 鞍山 114009
- 折叠
摘要
结合管线钢技术发展趋势,按照国内外技术标准最新要求,并借鉴大厚壁X80管线钢卷板开发经验,开展了基于中薄板坯生产螺旋焊管用X90管线钢卷板的试验研究.通过Gleeble-3800热模拟试验机完成了 X90管线钢动态OCT曲线的测定,获得其相变规律并确定了合适的冷却速率,在此基础上通过对其化学成分设计以及对冶炼、连铸、轧制、冷却工艺进行精细控制,在鞍钢2 150 mm ASP中薄板坯连铸连轧生产线完成了 16.3 mm×1 550 mm规格 X90管线钢卷板的工业化试制生产,其拉伸性能合格,-20 ℃冲击功不低于300 J,-20 ℃冲击剪切面积不低于90％,-20 ℃ DWTT剪切面积不低于90％,金相组织为粒状贝氏体、板条铁素体和弥散分布的M/A组元,各项性能指标均满足工程要求.以螺旋埋弧焊方式制成φ1219mm×16.3mm规格钢管,钢管各项性能指标良好.X90管线钢卷板的成功试制,实现了国内中薄板坯生产超高强管线钢的重大突破,对超大直径、更高钢级、更大厚壁管线钢板卷的开发具有重要意义.
Abstract
Combined with the development trend of pipeline steel technology,in accordance with the latest requirements of domestic and for-eign technical standards,and drawing on the development experience of large thick-walled X80 pipeline steel coil,the test research was car-ried out on the production of X90 pipeline steel coils for spiral welded pipes based on medium-thin slabs.The dynamic OCT curve of X90 pipeline steel was determined by the Gleeble-3800 thermal simulation tester,and the phase transformation law was obtained and the appro-priate cooling rate was determined.On this basis,through the design of its chemical composition,and the fine control of smelting,continu-ous casting,rolling and cooling processes,the industrial trial production of 16.3 mm×1 550 mm gauge X90 pipeline steel coil was completed in 2 150 mm ASP medium thin slab continuous casting and rolling production of Angang.Its tensile properties are qualified,-20 ℃ impact energy is not less than 300 J,-20 ℃ impact shear area is not less than 90％,-20 ℃ DWTT shear area is not less than 90％,the micro-structure is granular bainite,lath ferrite and dispersed M/A components,the property indicators meet the engineering requirements.Theφ1 219 mm×16.3 mm steel pipe is made by spiral submerged arc welding,and the property indexes of the steel pipe are good.The success-ful trial production of X90 pipeline steel coil has achieved a major breakthrough in the production of ultra-high strength pipeline steel of using medium thin slab in China,which is of great significance for the development of ultra-large diameter,higher steel grade,and thicker walled pipeline steel coil.
关键词
中薄板坯/X90管线钢卷板/工业化试制/绿色低碳Key words
medium-thin slab/X90 pipeline steel coil/industrial trial production/green and low-carbon引用本文复制引用
出版年
2024
NETL
NSTL
万方数据