【作者】 罗海文； 赵宇； 赵沛；

【Author】 Luo Hai-wen,Zhao Yu,Zhao Pei (Iron and Steel Research Institute Center for electrical steel,Beijin 100081)

【机构】 钢铁研究总院电工钢中心；

【摘要】 根据取向硅钢脱碳退火的化学反应机理以及钢带内部的碳扩散动力学,建立针对硅钢的脱碳动力学的数值模型,可以定量描述钢带厚度、退火温度、退火气氛(氢气比例、露点)对钢带脱碳的影响。其模拟计算结果与工业上脱碳退火的生产经验相当吻合。计算结果表明,提高退火温度和氢气比例或者将混合气体的露点增高至35℃都可以加速脱碳,但其中以提高退火温度效果最为明显,尤其对于厚的钢带而言,提高退火温度几乎是必然选择。这是因为厚度方向的碳扩散是工业生产中钢带脱碳的限制性环节;而改变退火气氛影响的仅是气固界面的反应动力学。更多还原

【Abstract】 Oriented silicon steel decarburization annealing according to the chemical reaction mechanism and diffusion dynamics of carbon steel.For silicon steel decarburization established numerical model of the dynamics.The results show that Increased annealing temperature and hydrogen gas mixture ratio,or dew point will be increased to 35oC can accelerate the decarbonization.Most obvious effect to improve the annealing temperature.Especially for thick strips which is almost inevitable choice for annealing temperature increase.This is because the thickness of the diffusion of carbon steel in industrial production in the restrictive aspects of decarburization;Climate change effects of annealing is the only gas - solid interface reaction kinetics.更多还原