| HG785D塔式起重机用高强特厚焊接钢板的研发 |
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| 引用本文： | 唐郑磊,高照海,许少普,陆岳璋.HG785D塔式起重机用高强特厚焊接钢板的研发[J].轧钢,2013,30(5):10-14. |
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| 作者姓名： | 唐郑磊 高照海 许少普 陆岳璋 |
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| 作者单位： | 1. 北京科技大学冶金与生态工程学院，北京100083 ; 2. 南阳汉冶特钢有限公司，河南南阳474500 |
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| 摘 要： | 介绍了南阳汉冶特钢有限公司利用自主研发的水冷模，通过成分设计、轧制工艺和热处理工艺设计，采用100t转炉—模铸—3800mm轧机—热处理的工艺，成功试制出240mm厚塔式起重机用高强度特厚焊接HG785D钢板，该钢板屈服强度达678～686MPa，抗拉强度达768～772MPa，伸长率达17%～20%，-20℃纵向冲击功达189～208J，抗层状撕裂性能达Z35级别，满足了大型塔式起重机的材料设计要求。
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| 关 键 词： | 特厚 水冷模 焊接结构钢 HG785D |
| 收稿时间： | 2013-03-04 |
Research and Development of HG785D High-strength Welded Structural Heavy Plate for Tower Crane |
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| TANG Zheng-lei,GAO Zhao-hai,XU Shao-pu,LU Yue-zhang.Research and Development of HG785D High-strength Welded Structural Heavy Plate for Tower Crane[J].Steel Rolling,2013,30(5):10-14. |
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| Authors: | TANG Zheng-lei GAO Zhao-hai XU Shao-pu LU Yue-zhang |
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| Affiliation: | 1. Metallurgical and Ecological Engineering School,University of Science and Technology Beijing,Beijing 100083, China ;2. Nanyang Hanye Special Iron and Steel Co．,Ltd．,Nanyang 474500, China |
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| Abstract: | The 240mm thickness high strength welded structural heavy plate HG785D for tower crane was de- veloped by Nanyang Hanye Special Steel Co. , which was applied its independent developed water-cooled mold, reasonable designs of composition, rolling scheme and heat treatment process. The mechanical properties of yield strength was reached 678 ~ 686MPa, tensile strength was reached 768 ~ 772MPa, extensibility was reached 17%~ 20%, and the compact value at -20℃ was 189 ~ 208J, lamellar tearing resistant property reached Z35 grade. |
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| Keywords: | heavy plate water-cooled mold l controlled cooling microstructure and property |
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