ISSN:1003-8620
CN:42-1243/TF
主管:中信泰富特钢集团股份有限公司
主办:大冶特殊钢有限公司
特殊钢 ›› 2005, Vol. 26 ›› Issue (4): 56-57.
• 工艺技术 • 上一篇 下一篇
吴 杰 ,刘振清
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作者简介:
Wu Jie , Liu Zhenqing
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摘要: 分析了武钢90t顶底复吹转炉冶炼<0.005%C,≤0.005%N超低碳、氮钢的两种冶炼工艺技术,即常规工艺:KR脱S→LD→RHKTB→CC和双联工艺:KR脱S→LD脱Si、P→LD复吹脱碳→RHKTB→CC。实践表明,常规工艺冶炼时中间包钢水平均C含量为25.5×10-6、平均N含量为18.5×10-6;双联工艺冶炼时,中间包钢水平均C含量为16×10-6、平均N含量为19×10-6,双联工艺吹炼终点[P](60×10-6)比常规工艺(110×10-6)低。
关键词: 超低碳, 超低氮, 转炉, , RH-KTB 精炼, 冶炼
Abstract: Two kinds of metallurgical process for melting a <0.005%C-≤0.005% N ultra-low carbon and ultra-low nitrogen steel by a 90 t top and bottom combined blown converter a Wuhan Iron and Steel: single slag process KR desulphuration -LD - RH-KTB - CC and two-step steelmaking process KR desulphuration - LD desiliconisation and dephosphorization-LD combined blown decarbonation - RH-KTB- CC have been analyzed. The practice results showed that during steelmaking with single slag process the average C content in liquid steel in tundish was 25.5×10-6 and the average N content was 18.5×10-6 and with two-step process the average C content in liquid steel in tundish was 16×10-6, the average N content was 19×10-6,and the end [P] with two-step process(60×10-6)was lower that with single slag process(110×10-6).
吴 杰 , 刘振清. 转炉冶炼超低碳、超低氮钢的工艺技术[J]. 特殊钢, 2005, 26(4): 56-57.
Wu Jie , Liu Zhenqing. Metallurgy Technology for Ultra-Low Carbon and UItra- Low Nitrogen Steel[J]. Special Steel, 2005, 26(4): 56-57.
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