热型连铸过程液／固界面位置对过程参数变化的响应  

Response of Location of Liquid/solid Interface to Processing Parameters in OCC (Ohio Continuous Casting)

作　　者：徐华苹[1] 毛协民[1] 卞永明[2] 

机构地区：[1]上海大学材料科学与工程学院 [2]同济大学机械学院

出　　处：《特种铸造及有色合金》2009年第1期16-18,共3页Special Casting & Nonferrous Alloys

摘　　要：热型连铸过程的实时控制涉及到过程液/固界面位置对控制参数(冷却距离和牵引速度)的响应。根据热型连铸过程的凝固传热特性,建立了热型连铸过程的物理、数学模型,获得了OCC过程中液/固界面位置对不同的冷却距离和牵引速度变化量的响应函数。通过数值模拟,考察了冷却距离和牵引速度变化时液/固界面位置的响应过程,并明确了在OCC过程的闭环控制过程中,冷却距离和牵引速度两控制量调整的先后顺序。Response of the location of the liquid/solid interface to processing parameters (cooling distance and pulling velocity) in OCC (ohio continuous casting) was expounded. The physical and mathematical models were established based on heat transfer in OCC process to obtain response function of location of liquid/solid interface to different cooling distance and pulling speed. Response ability of the location with varying in cooling distance and in pulling speed was simulated by the model. The results reveal that adjustment of cooling distance is prioror in the closed-loop control of the OCC process.

关 键 词：OCC过程 数值分析 液/固界面位置 响应函数 

分 类 号：TG249.7[金属学及工艺—铸造]