Development of Swirling-flow Submerged Entry Nozzles for Slab Casting
Development of Swirling-flow Submerged Entry Nozzles for Slab Casting
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DOI：
10.2355/isijinternational.50.721
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发表时间：
2010-05
影响因子：
1.8
通讯作者：
Y. Tsukaguchi;H. Hayashi;Hidenori Kurimoto;S. Yokoya;K. Marukawa;Toshihiro Tanaka
中科院分区：
文献类型：
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作者：
Y. Tsukaguchi;H. Hayashi;Hidenori Kurimoto;S. Yokoya;K. Marukawa;Toshihiro Tanaka
我们从1997年开始开发旋流浸入式水口，作为控制连铸结晶器内流型的基本而有效的措施。作为第一步，我们在和歌山工厂开发了用于圆坯连铸的旋流浸入式水口。然后，我们开始开发用于板坯连铸的旋流浸入式水口。本文的主要目的是证明浸入式水口内旋流的形成能提高连铸生产率和产品质量。我们研究了在这些主体中带有旋流叶片的旋流浸入式水口，因为这种布置是在连铸机中将旋流应用于浸入式水口的最简单的方法，而无需设备投资。在实验中我们只需要改变浸入式喷管。研制了板坯连铸用旋流浸入式水口，并在和歌山和鹿岛工厂进行了操作检验。结果表明，浸入式水口提高了连铸速度，改善了铸坯和钢板的表面质量。
We began development of swirling-flow submerged entry nozzles in 1997 as a fundamental and effective measure for controlling the flow pattern in continuous casting molds. As a first step, we developed a swirling-flow submerged entry nozzle for round billet casting at the Wakayama works. We then began developing swirling-flow submerged entry nozzles for slab casting. The main purpose of the present work was to demonstrate that the formation of swirling flow in submerged entry nozzle improves productivity and the quality of products in continuous casting. We examined swirling-flow submerged entry nozzles with a swirl blade in these main bodies because such an arrangement is the easiest way to apply swirling flow to submerged entry nozzles in continuous casters without investment by facilities. We had only to change the submerged entry nozzle in the experiment. Swirling-flow submerged entry nozzles for slab casting were developed and their operation examined at the Wakayama and Kashima works. It was found that the proposed submerged entry nozzles increased the casting speed and improved the surface quality of slabs and steel sheets.