用氮化铬、氮化锰冶炼高氮钢

 为了研究钢液增氮的新工艺，以钢液增氮的冶金热力学和动力学为基础，在10 kg感应炉上添加氮化铁合金以过饱和氮的方式来提高钢液最终氮含量，并对Cr18Mn18N和Cr23Mn17N两种实验材料的理论氮含量饱和值进行了计算。实验表明，采用氮化铬和氮化锰冶炼，钢液最终氮含量大幅度超过钢液与气相平衡时的氮含量，且氮化铬的增氮效果明显优于氮化锰。采用氮化铬冶炼，氮的收得率和氮的质量分数最高可达89%和098%。

High Nitrogen Steel Refined by Chromium Nitride Ferroalloy and Manganese Nitride Ferroalloy

In order to research the new technique of adding nitride to the liquid steel, according to the analysis of thermodynamics and kinetics, the nitride ferroalloys are added to the liquid steel with saturated nitrogen content in the ten kilogram induction furnace to increase the final nitrogen content and the theoretical saturated nitrogen content is calculated. The results indicate that by using chromium nitride ferroalloys and manganese nitride ferroalloys to obtain Cr18Mn18N and Cr23Mn17N, the final content of nitrogen will excess the content which balances with that of the gas phase and the nitrogen increase of using chromium nitride ferroalloy is obviously superior to that of using manganese nitride ferroalloy, especially when the chromium nitride ferroalloy is used, the highest yield and the content of nitrogen will reach 89% and 0.98% respectively.