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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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射流型磁场排布方式控制结晶器内液流的实验研究
DOI: 10.3724/SP.J.1037.2011.00215, PP. 1285-1291
Keywords: 连铸,结晶器,电磁制动,物理模拟,射流型磁场排布方式
Abstract:
以水银为介质,通过物理模拟实验考察射流型磁场排布方式对中厚板坯连铸结晶器内流场的控制.采用超声波Doppler测速仪测量有、无磁场下的结晶器内液态金属流速,研究磁场排布和强度对水口出流、结晶器内流动、液面流动、结晶器窄面模壁的冲刷作用等的影响.实验显示,射流型磁场排布方式使水口出流流速受到比通常磁场排布方式更强的抑制作用,使其在撞击结晶器窄壁前发生分散,可使上环流流速增强,下环流减弱直至消失,直接形成活塞流形式;同时,还改善了弯月面处流动情况.相比于工业生产中的全幅一段电磁制动技术,射流型磁体排布方式的电磁制动在水口出流、液面处流动方面具有更强的制动作用.
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