Solute redistribution and macrosegregation in continuous casting slab of carbon steel during solidification process
Solute redistribution and macrosegregation in continuous casting slab of carbon steel during solidification process作者机构：Research InstituteBaoshan Iron&Steel Co.Ltd.Shanghai 201999China
出 版 物：《Baosteel Technical Research》 (宝钢技术研究（英文版）)
年 卷 期：2020年第14卷第4期
页 面：33-39页
学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程]
主 题：central segregation solute redistribution Scheil model continuous casting
摘 要：Based on the modified Scheil model of solute redistribution,the effects of solidification rate,molten steel flow,and alloy composition on solute macrosegregation during the solidification of carbon steel continuous casting billet are calculated and analyzed. The formation mechanism of white band segregation under the condition of electromagnetic stirring is also involved,and some practical countermeasures to restrain the central segregation are suggested. The results show that the modified Scheil model can be applied to predict and analyze the macrosegregation of casting slab effectively. The ratio vx/R of the flow velocity of molten steel to solidification rate has decisive formations of segregation such as linear,V,and white bandtypes. It is an effective way to select sufficient terminal cooling and reasonable electromagnetic stirring in order to decrease macrosegregation in the slab. The concept of the characteristic distance of solute enrichment layer can drastically simplify the calculation of solute redistribution at the solid/liquid interface of various elements in carbon steel.
维普期刊数据库
同方期刊数据库