| 460 MPa级建筑结构用抗震耐蚀钢板的开发 |
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| 引用本文： | 陈振业,孙力,魏浩,姚纪坛,陈礼清,王国栋.460 MPa级建筑结构用抗震耐蚀钢板的开发[J].轧钢,2020,37(6):5-10. |
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| 作者姓名： | 陈振业 孙力 魏浩 姚纪坛 陈礼清 王国栋 |
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| 作者单位： | 1.东北大学轧制技术及连轧自动化国家重点实验室,辽宁 沈阳 110819;2.河钢集团钢研总院,河北 石家庄 050023 |
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| 基金项目： | 河北省重点研发计划项目(18211019D);河北省“三三三人才工程”资助项目(A201803007);河钢集团重点研发项目(HG2018203) |
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| 摘 要： | 为适应钢结构建筑用钢的发展需求,采用低C及“Ni-Cr-Cu-Al-Nb”微合金化成分设计及合理的控制轧制工艺,成功开发出高强度、低屈强比、耐候、易焊接Q460GJNH钢板。其组织由准多边形铁素体、贝氏体和珠光体组成,屈服强度487～493 MPa,抗拉强度649～659 MPa,屈强比为0.74～0.76,断后伸长率为22.2～23.5%,-40 ℃冲击功为179～212 J,且焊接性能优良。耐蚀性能研究表明,同等条件下Q460GJNH钢板的腐蚀速率仅为Q345B钢板的29.7%。
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| 关 键 词： | 高层建筑用钢 抗震 耐候 盐雾试验 焊接性能 |
| 收稿时间： | 2019-10-31 |
Development of 460 MPa grade anti-seismic and anti-corrosion plate for building structure |
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| CHEN Zhen-ye,SUN Li,WEI Hao,YAO Ji-tan,CHE Li-qing,WANG Guo-dong.Development of 460 MPa grade anti-seismic and anti-corrosion plate for building structure[J].Steel Rolling,2020,37(6):5-10. |
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| Authors: | CHEN Zhen-ye SUN Li WEI Hao YAO Ji-tan CHE Li-qing WANG Guo-dong |
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| Affiliation: | 1. State Key Laboratory of Rolling Technology and Automation,Northeastern University,Shenyang 110819,China;2. Centre Iron and Steel Technology Research Institute,HBIS Group,Shijiazhuang 050023,China |
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| Abstract: | In order to meet the development demand of structure construction steel,the Q460GJNH plate with high strength,low yield ratio,weather resistance and easy welding property was developed by low carbon and " Ni-Cr-Cu-Al-Nb" microalloyed composition designing,and using reasonable controlled rolling and accelerated cooling process.The microstructure of Q460GJNH plate is composed of quasi-polygonal ferrite,bainite and pearlite.Besides,its yield strength is 487~493 MPa,the tensile strength is 649~659 MPa,the yield ratio is 0.74~0.76,and the elongation after fracture is 22.2%~23.5%.The impact property below -40 ℃ keeps between 179 J and 212 J,and welding performance is excellent.The study on corrosion resistance shows that the corrosion rate of Q460GJNH plate is only 29.7% of that of Q345B plate under the same conditions. |
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| Keywords: | high construction steel earthquake resistant weather resistant salt spray test welding property |
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