Based on AOD refining practice,the model was established to predict nitrogen content in stainless steel containing nitrogen and the Ar blowing time by BP artificial neural network.

• 根据AOD炉吹氮气冶炼含氮不锈钢的生产条件,运用BP神经网络建立了含氮不锈钢氮含量预测模型和吹氩时间预测模型。