Journal Article

Control Model of Bloom Dynamic Soft Reduction

CHEN Yong JI Cheng ZHU Miao-yong WU Guo-rong

2010

Overview

There are significant effects of process parameters on internal qualities of bloom, and these process parameters are as follows. position and reduction amount, reduction distribution, reduction rate, and so on. Developing a control model is the key to apply soft reduction technology successfully. As the research object, 360 mm ×450 mm bloom caster in PISCO （Panzhihua Iron and Steel Co. ） has been studied, and the research method for control model of dynamic soft reduction has been proposed. On the basis of solidification and heat transfer model, the position of soft reduction and reduction distribution of each frame are determined according to the bloom temperature distribution and solid fraction in bloom center calculated. Production practice shows that the ratio of center porosity which is less than or equal to 1.0, increased to 97.27%, ratio of central segregation which is less than or equal to 0.5, increased to 80.91%, and ratio of central carbon segregation index which is more than or equal to 1.10, decreased to 4% with the applying model of dynamic soft reduction.

• Publisher: Elsevier Ltd,Springer Singapore,Springer Nature B.V
• Subject: Applied and Technical Physics / bloom continuous casting / Blooms (metal) / center porosity / central segregation / control model / dynamic soft reduction / Dynamics / Engineering / Iron and steel industry / Machines / Manufacturing / Materials Engineering / Materials Science / Mathematical models / Metallic Materials / Physical Chemistry / Process parameters / Processes / Reduction / Segregations / Solidification / Steel making / Steels / Temperature distribution / 中心碳偏析 / 内部品质 / 分布位置 / 动态控制模型 / 动态轻压下 / 大方坯连铸机 / 工艺参数 / 攀枝花钢铁公司