Q345EL钢铌硼镍微合金化工艺实践

Process Practice of Nb-B-Ni Micro-alloying Process for Q345EL

阐述了生产Q345EL钢的工艺措施。通过铌、硼、镍微合金化，提高了Q345EL钢的-50℃低温冲击性能。Q345EL钢种的成功开发，对产品品种结构调整和提升盈利水平具有重要的意义。

Technical measures of Q345EL were expounded. Through Nb-B-Ni micro-alloying, the low temperature impact toughness of Q345EL at -50 ℃ was raised. Successful development of steel Q34EL have important significances for the variety structure adjustment and the profit level promotion.