摘要
结合方坯连铸机二冷各段的实际情况,在二冷各段末对铸坯进行射钉取样,利用硫印法测定方坯二冷区内目标点凝固壳的厚度,建立了方坯传热数学模型,并利用射钉结果修正数学模型中的各段的传热系数,提高数学模型的准确性。将射钉法确定的坯壳厚度与数学模型计算结果相比较,结果表明,利用修正过的数学模型可以模拟整个铸机的传热凝固过程。
The thickness of solidified billet shell in secondary cooling region is determined by pin- shooting technique and sulfur print combined with the practical production situation of the continuous caster in Fujian. Mathematical model of the steady temperature filed with two-dimensional heat transfer is established as well. Heat transfer coefficient is modified in different secondary cooling region by pin-shooting result, thus the accuracy of the mathematical model is improved. By comparing the shell thickness determined by pin-shooting technique with that calculated by mathematical model, it shows that the modified mathematical model can simulate the heat transfer and solidification process of whole casting machine.
出处
《铸造技术》
CAS
北大核心
2007年第3期435-438,共4页
Foundry Technology
基金
国家自然科学基金资助项目(50174021)
关键词
连铸
射钉法
坯壳厚度
数值模拟
Continuous casting
Pin-shooting technique
Shell thickness
Numerical simulation
