| 中碳铌微合金化钢NbC的析出控制 |
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| 引用本文： | 石可伟,蒋栋初,郑力宁,王子健,张洪才.中碳铌微合金化钢NbC的析出控制[J].连铸,2020,45(3):77-80. |
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| 作者姓名： | 石可伟 蒋栋初 郑力宁 王子健 张洪才 |
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| 作者单位： | 江苏沙钢集团淮钢特钢股份有限公司总工办, 江苏 淮安 223002 |
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| 摘 要： | 对开坯+连轧生产出的大规格铌微合金化中碳圆钢的轧后NbC形态进行了研究分析。研究发现,中碳钢铌的质量分数为0.03%时,连铸凝固过程中会析出5μm以上的碳化铌;钢坯轧制加热温度为1 250℃左右,高温段保温时间为4 h以上时,微米级碳化铌得到固溶。
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| 关 键 词： | 微合金化 固溶 碳化铌 凝固过程 |
Precipitation control of NbC in medium carbon niobium microalloyed steel |
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| SHI Ke-wei,JIANG Dong-chu,ZHENG Li-ning,WANG Zi-jian,ZHANG Hong-cai.Precipitation control of NbC in medium carbon niobium microalloyed steel[J].CONTINUOUS CASTING,2020,45(3):77-80. |
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| Authors: | SHI Ke-wei JIANG Dong-chu ZHENG Li-ning WANG Zi-jian ZHANG Hong-cai |
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| Affiliation: | General Engineer Office of Jiangsu Shagang Group Huaigang Special Steel Co., Ltd., Huaian 223002, Jiangsu, China |
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| Abstract: | NbC morphology of carbon round steel in niobium microalloying was studied and analyzed after rolling. According to the study, when the mass fraction of niobium in medium carbon steel is 0.03%, niobium carbide above 5 μm will be precipitated in the process of continuous casting solidification.When the heating temperature of billet rolling is about 1 250 ℃ and the holding time of high temperature section is more than 4 h, the solution of micron grade niobium carbide can be obtained. |
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| Keywords: | microalloyed dissolved NbC solidification process |
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