| 250mm超厚低合金高强度Q345D钢板的研制 |
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| 引用本文： | 许少普,崔冠军,吴彦,赵迪,杨东,高照海,张智慧.250mm超厚低合金高强度Q345D钢板的研制[J].钢铁研究,2010(5):59-62. |
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| 作者姓名： | 许少普 崔冠军 吴彦 赵迪 杨东 高照海 张智慧 |
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| 作者单位： | [1]南阳汉冶特钢有限责任公司技术中心,河南南阳474500 [2]河南省南阳市专利局,河南南阳474000 |
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| 摘 要： | 通过采取较低碳、低锰、多元复合微合金元素化学成分设计,利用模铸浇注-3800 mm宽厚板轧机轧制-正火热处理生产线,成功地研制开发并批量生产出了250 mm超厚保性能、保三级探伤的低合金Q345D钢板。钢板各类夹杂物级别总和不超过3.0,晶粒度达到8.0~9.0级。性能富余量较大,其中屈服富余量在65~115 MPa,抗拉富余量在45~75 MPa,伸长率富余量为5%~10%,-20℃V型冲击功平均为106 J,-40℃V型冲击功平均达到了43 J,完全符合超厚Q345D的性能要求。
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| 关 键 词： | 超厚钢板 Q345D 低合金高强度钢 |
Development of Q345D high-strength low-alloyed plate with super thinkness of 250 mm in Nanyang Hanye Special Steel Company |
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| XU Shao-pu,CUI Guan-jun,WU Yan,ZHAO Di,YANG Dong,GAO Zhao-hai,ZHANG Zhi-hui.Development of Q345D high-strength low-alloyed plate with super thinkness of 250 mm in Nanyang Hanye Special Steel Company[J].Research on Iron and Steel,2010(5):59-62. |
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| Authors: | XU Shao-pu CUI Guan-jun WU Yan ZHAO Di YANG Dong GAO Zhao-hai ZHANG Zhi-hui |
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| Affiliation: | 1. Technology Center of Nanyang Hanye Special Iron and Steel Co. Ltd. , Nanyang 474500,China 2. Patent Bureau of Nanyang City, Nanyang 474000, China ) |
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| Abstract: | By adopting a chemical composition design of low carbon,low manganese and complex alloying elements, 250 mm super thickness high-strength low-alloyed steel plate Q345D has been successfully developed and produced in batch scale on a production line of ingot mould pouring--3 800 mm plate rolling （TMCP）--normalizing process. The total inclusions grade was not exceed 3. 0, the grain fineness reached 8.0~9.0,all of the specifications were in good accordance with the standard of super thickness Q345D plate. |
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| Keywords: | super thickness plate Q345D HSLA steel |
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