摘要
通过电磁制动数值模拟，提出了钢水对（900～1600）mm×（50～70）mm结晶器内壁或铸坯初凝壳冲击和冲刷作用的半定量分析方法。数值模拟结果表明，电磁制动使钢水注流对结晶器窄边的冲击位置上升40％，上升流的冲刷强度下降了86％，下降流的冲刷强度下降了10％，这有利于避免发生铸坯初凝壳被钢水热流重熔等现象，从而减少铸坯横裂等凝固缺陷；现场对比试验结果表明，使用电磁制动使CSP（紧凑式热带生产）结晶器内弯月面钢液温度上升5．8℃，有利于结晶器内钢水表面的化渣。
With electromagnetic brake （EMBr） numerical simulation, the semi-quantitative method to analyze the impact of molten steel to inner wall and initial solidified shell in （900 ～ 1 600） mm× （50 ～ 70） mm mould has been presented. The numerical simulation results showed that with EMBr the impact point of steel flow in mould at narrow face went up by 40%, and the impact intensity of up-flow and down-flow decreased bY 86% and 10% respectively, it was available to avoid the solidified shell re-melting so as to reduce the solidification defect such as transverse crack. The commercial test results showed that with EMBr the temperature of molten steel at meniscus in CSP （ Compact Strip Production） mould increased by 5.8℃, it was favourable to flux at surface of molten steel.
出处
《特殊钢》
北大核心
2006年第1期11-14,共4页
Special Steel
关键词
CSP工艺
电磁制动
坯壳
弯月面温度
CSP Process, Electromagnetic Brake, Solidified Shell, Temperature at Meniscus
