N80-1类电阻焊石油套管用钢的开发
Development of N80-1 Type Oil Casing Steel for ERW
黄明浩1, 黄国建1, 孔祥磊1, 马小军2, 关 菊2
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作者单位：（1.鞍钢股份技术中心, 辽宁 鞍山 114009； 2.鞍钢股份第三炼钢连轧厂, 辽宁 鞍山 114021）
中文关键字：N80-1； 石油套管； 卷板
英文关键字：N80-1; oil casing; coil
中文摘要：介绍了鞍钢2150ASP中薄板坯连铸连轧生产线开发11.99 mm厚电阻焊石油套管用钢N80-1热轧卷板的难点和特点。成分设计上采用低碳高锰添加少量Mo元素,碳当量控制在0.45%以下；在工艺上采用纯净钢冶炼、动态轻压下连铸技术、ASP热装热送工艺和TMCP技术,解决了中薄板坯压缩比小、卷板抗拉强度低等难题,成功实现了其批量供货。卷板制管后,产品各项性能完全满足API SPEC 5CT标准要求。
英文摘要：The difficulty and characteristic of producing N80-1 hot coil with 11.99mm thickness were introduced in Angang 2150ASP thin-slab continuous casting and rolling production line. This steel chemical composition was designed as low content C, high content Mn, and Ceq is lower than 0.45%. The problem such as small compression ratio and low tensile strength is solved by clean refining technology, dynamic soft reduction continuous casting and rolling technology and TMCP technology. The N80-1 coil for ERW oil Casing is producted in batches. The mechanical properties of ERW tube can completely meet API SPEC 5CT requirement.