电渣生产高氮钢保氮工艺研究

Study on Nitrogen Retention of High Nitrogen Steel by Electroslag

研究了高氮钢电渣过程氮损失机理,分析了电渣过程氮损失原因,论述了熔渣组成及冶炼工艺,认为产生氮损失的原因是冶炼过程中功率太大,致使钢中N原子相互结合形成N_2。可通过优化电炉钢的成分、选择低合适熔点的渣系、适当降低冶炼功率来降低N损失,效果显著。

The high nitrogen steel electroslag process of nitrogen loss mechanism is studied. The reason of nitrogen loss in electroslag process is analyzed. The composition of slag and smelting process are discussed. Research shows that the loss of nitrogen has large power in smelting process, resulting in N_2 by N atoms combination. The N loss can be reduced by optimizing the composition of the EAF steel, selecting the slag system with a suitable melting point and reducing the smelting power properly. The effect is remarkable.