Study on the technology of controlling nitrogen content in molten steel

Author:

Li Huicheng,Xie Changsheng,Yu Fei,Zhang Jianbin,Zhang Zhenglin

Abstract

Abstract Nitrogen content has an prominent effect on the properties of rolling material and demands should be paid more attention. Even then the residuary nitrogen in steel is quite small, it has an impotent effect on the mechanical properties of materials. The present nitrogen content control process is relatively briefness and it needs to be farther studied. In this paper, through the analysis of possible nitrogen increase and nitrogen control-related production processes in the whole metallurgical process of steel, nitrogen control, and nitrogen reduction are carried out in stages by using an optimized smelting process. After adopting the new process, the final nitrogen in EAF can be reduced by 50%, the vacuum nitrogen removal efficiency can be increased by 20%, the nitrogen increase in continuous casting can be controlled below 5 ppm, and the final nitrogen content in rolled steel can be reduced to below 50 ppm.

Publisher

IOP Publishing

Subject

Computer Science Applications,History,Education

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