摘要
以中国某钢厂厚度为250 mm厚板坯结晶器为研究对象,通过数值模拟方法,研究了浸入式水口结构和拉速对结晶器流场的影响,优化出合适水口结构和工艺参数:优化水口结构为3号水口,最佳匹配拉速为0.95 m/min。工厂验证试验说明,3号水口条件下液渣层厚度和钢水活跃程度合适,且减小质量分数为23.5%的铸坯夹杂物。
Effect of submerged entry nozzle structure and casting speed on the flow field of a 250 mm slab mold in a domestic steel company was studied by using the numerical simulation method,and the suitable nozzle structure and process parameters were optimized.The study results showed that the optimum nozzle structure was No.3 nozzle and the reasonable casting speed was 0.95 m/min.Through industrial production test,it was proved that the thickness of liquid slag layer and the activity of molten steel were suitable under the condition of No.3 nozzle,and quality of the slab was improved because the inclusion content of the slab was reduced by 23.5%after the test.
作者
袁静
时朋召
徐李军
黄华
YUAN Jing;SHI Peng-zhao;XüLi-jun;HUANG Hua(Xinyu Iron and Steel Group Co.,Ltd.,Xinyu 338001,Jiangxi,China;National Research Center of Continuous Casting Technology,Central Iron And Steel Research Institute,Beijing 100081,China)
出处
《连铸》
2019年第4期19-25,共7页
Continuous Casting
关键词
厚板坯
结晶器
浸入式水口
流场
优化
thick slab
mold
submerged entry nozzle
flow field
optimization
