ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2022, Vol. 43 ›› Issue (1): 66-68.

• 工艺技术 • 上一篇    下一篇

耐候结构用热轧钢带 Q355NHC 研制与开发

黄  利1,董  磊2,徐  龙2, 杨  雄1   

  1. 1 内蒙古包钢钢联股份有限公司技术中心,包头 014010 ;  
    2 内蒙古包钢金属制造有限责任公司,包头 014010
  • 收稿日期:2021-05-25 出版日期:2022-01-25 发布日期:2022-03-18
  • 作者简介:黄 利 ( 1981-),男,硕士(2017 年内蒙古科技大学),高级工程师,板材产品研发。

Research and Development of Q355NHC Hot Rolled Steel Strip for Weathering Structure

Huang Li1, Dong Lei2, Xu Long2,Yang Xiong1   

  1. 1 Technology Center of Inner Mongolia Baogang Steel Union Co Ltd, Baotou 014010;
    2 Inner Mongolia Bantou Steel Metal Manufacturing Co Ltd, Baotou 014010
  • Received:2021-05-25 Published:2022-01-25 Online:2022-03-18

摘要: 选用Cu、Cr、Ni微合金化成分体系,采用热连轧控轧控冷工艺,精轧终轧温度845~875℃,卷取温度585~615℃生产的8 mm耐候结构钢Q355NHC (/%:0.068C,0.18Si,1.17Mn,0.010P,0.006S,0.35Cu,0.21Ni,0.49Cr)带材力学性能为:屈服强度463.6 MPa,抗拉强度552.3 MPa,延伸率28.7%,-20℃V-型缺口冲击功251~256 J,各项质量指标均满足标准要求。

关键词: Q355NHC 耐候钢, 化学成分, 控轧控冷

Abstract: By selecting Cu, Cr and Ni micro-alloying composition system and controlled rolling and cooling process of hot continuous rolling, finishing rolling temperature 845 ~875 ℃ and coiling temperature 585 ~615 ℃ , the mechanical properties of produce weather-resistant structural steel Q355NHC 8 mm strip ( /% :0. 068C,0. 18Si, 1. 17Mn,0. 010P, 6. 006S,0. 35Cu,0. 21Ni,0. 49Cr ) are yield strength 463. 6 MPa, tensile strength of 552. 3MPa, elongation 28. 7% , and -20 ℃ V- type notch impact energy 251 ~256 J, and the other quality indexes meet the standard requirements.