(上海大學 材料學院, 上海 200072)
摘 要: 針對薄帶雙輥連鑄的輥端金屬液側(cè)封問題, 采用低熔點合金物理模擬實驗, 研究單純的電磁側(cè)封、 電磁場復合有機玻璃擋板側(cè)封、 電磁場耦合內(nèi)置或外置鐵芯的耐材擋板側(cè)封4種方式下的磁感應(yīng)強度分布特點和側(cè)封效果。 結(jié)果表明： 電磁場耦合內(nèi)置鐵芯擋板的側(cè)封方式效果最好, 可將金屬液側(cè)封高度提高3.3倍, 且金屬液的側(cè)封高度隨電流強度線性遞增。同時還觀察和分析側(cè)封過程中金屬液面波動現(xiàn)象。
關(guān)鍵字: 金屬薄帶； 雙輥； 連鑄； 側(cè)封； 電磁側(cè)封
（School of Materials, Shanghai University, Shanghai 200072, China）
Abstract: A model for investigating the containment of molten metal puddle in a twin-roll caster with electromagnetic dam (EMD) coupled with a solid dam was established. The magnetic flux density distribution of electromagnetic field along the yoke surface was measured. The results show that EMD coupled with inside-ferromagnetodam is the best method among the electromagnetic field coupled with vinyl chloride dam, outside-ferromagnetodam, or without any solid dam, which can enhance the height of molten metal about 3.3 times than that without any solid dam. The containment height of molten metal increases linearly with increasing current. The fluctuation on the surface of molten metal was also analyzed.
Key words: thin strip of metal; twin rolls; continuous casting; containment; electromagnetic dam (EMD)
