铸造技术2011，Vol.32Issue(7)：989-993,5.
高碳钢大圆坯R/2偏析现象形成机理与控制策略的研究
Study on the Formation Mechanism and Control Strategy of R/2-Segregation of High-Carbon Steel Round Billet
摘要
Abstract
Aiming at the R/2-segregation phenomenon found in high carbon round billet produced by a domestic plant, a model of its formation, based on correlation of macrosegregation and solidification structure of round billet, and considering the solidification properties of round billet and casting process, was proposed in this paper. The formation mechanism of equiaxed crystal in high carbon steel during solidification and driving force caused R/2-segregation were described in this model, which agreed well with the results obtained in industrial practice with varied electromagnetic stirring and secondary cooling systems. From the model, it could be known that appropriate electromagnetic stirring intensity and controlling the bulging of billet are very important for eliminating R/2-segregation.关键词
高碳钢/圆坯/R/2偏析/形成机理Key words
High-carbon steel/ Round billet/R/2-segregation/ Formation mechanism分类
矿业与冶金引用本文复制引用
景财良,王新华,许志刚,黄福祥,王万军..高碳钢大圆坯R/2偏析现象形成机理与控制策略的研究[J].铸造技术,2011,32(7):989-993,5.基金项目
国家重点基础研究发展计划项目资助(NO.2010CB630806) （NO.2010CB630806）
