| 400mm特厚低合金结构钢Q345E的研发 |
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| 引用本文： | 唐郑磊,杨东,张涛,李红洋,徐昭,袁恒. 400mm特厚低合金结构钢Q345E的研发[J]. 钢铁研究, 2012, 40(3): 53-56 |
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| 作者姓名： | 唐郑磊 杨东 张涛 李红洋 徐昭 袁恒 |
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| 作者单位： | 南阳汉冶特钢有限公司技术中心,河南南阳,474500 |
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| 摘 要： | 通过合理的钢种成分设计,模铸、钢锭加热和3 800mm轧机轧制及热处理工艺设计,采用晶粒细化、固溶强化、析出强化等手段,研发了厚度400mm的特厚板Q345E。钢板的屈服强度控制在305～350MPa,平均为335MPa;抗拉强度控制在470～555MPa,平均达到530MPa;伸长率控制在23%～28%,平均达到26%;-40℃纵向冲击功控制在109～287J,平均达到了198J,实现了强度和韧性的良好匹配,并具有较高的内部质量。
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| 关 键 词： | 成分设计 模铸 热处理 特厚板 低合金结构钢 |
Development of low-alloy structural steel Q345E with thickness of 400mm |
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| TANG Zheng-lei,YANG Dong,ZHANG Tao,LI Hong-yang,XU Zhao,YUAN Heng. Development of low-alloy structural steel Q345E with thickness of 400mm[J]. Research on Iron and Steel, 2012, 40(3): 53-56 |
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| Authors: | TANG Zheng-lei YANG Dong ZHANG Tao LI Hong-yang XU Zhao YUAN Heng |
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| Affiliation: | (Nanyang HanYe Special Steel Ltd.,Nanyang 474550,China) |
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| Abstract: | Ultra-thick low-alloy structural steel Q345E with thickness of 400mm was developed by reasonable design in steel composition,mold casting and heating of billet,rolling and heating treatment processes of 3 800 mm rolling mill.Technological measures,such as grain refinement,solid solution strengthening,precipitation strengthening,etc.were adopted.As a result,its yield strength was 305-350 MPa(average 335 MPa),the tensile strength reached 470-555 MPa(average 530 MPa),the elongation rate was 23 %-28 %(average 26 %),the impact power in longitudinal direction at-40 ℃ was 109-287 J(average 198 J).The ultra-thick plate achieved a good match of strength and toughness and was good in internal quality. |
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| Keywords: | composition design mold casting heat treatment ultra-thick plate |
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