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Analysis of nitrogen control on producing heavy plate in Baosteel
Author(s): 
Pages: 26-29
Year: Issue:  5
Journal: Bao-Steel Technology

Keyword:  低氮厚板精炼浇铸;
Abstract: 分析了氮在钢水中的行为以及氮在厚板中的危害,介绍了转炉、精炼、连铸生产过程中采取的主要技术措施,包括转炉提高铁水比、优化合金加入方式;LF精炼炉气氛控制、造好白渣、埋弧操作;充分利用RH脱氮功能降低钢水中的氮,防止增氮;钢包长水口及氩封保护浇铸,防止连铸过程钢液吸氮.通过以上措施,厚板产品中的氮含量较以前有了显著的下降,厚板板坯的裂纹得到明显改善.
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