150tLF炉冶炼热轧带肋钢吹氮控氮的探究

150tLF炉钢包吹氮配加含钛合金控氮生产HRB400E试验表明,能实现增加钢中氮含量,金相分析可以观察铁素体晶粒及晶界中有细小析出物,有效发挥微合金化元素的作用。在保证产品成分和钢材力学性能合格条件下,降低生产成本提供了依据,为后续开始稳定增氮控氮研究奠定了基础。

Study on Nitrogen Blowing and Nitrogen Control in the Smelting of Hot Rolled Ribbed Steel in 150tLF

The results show that the nitrogen content in the steel can be increased by blowing nitrogen and adding titanium alloy to control nitrogeninsmelting hot rolled ribbed steel bar in 150tLF.The metallographic analysis shows that there are fine precipitates in ferrite grains and grain boundaries,which effectively play the role of microalloying elements.Under the condition that the composition and mechanical properties of the product are qualified,the addition of precious alloy is reduced,the production cost is reduced,and the basis for the subsequent research on stable nitrogen increase and control is laid.