Control of Early Solidification in Continuous Casting by Horizontal Oscillation in Synchronization with Vertical Oscillation of the Mold
Control of Early Solidification in Continuous Casting by Horizontal Oscillation in Synchronization with Vertical Oscillation of the Mold
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DOI：
10.2355/isijinternational.38.461
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发表时间：
1998-05
影响因子：
1.8
通讯作者：
Itoyama Seiji;H. Tozawa;Tetsuo Mochida;Kurokawa Katsumi;Matsukawa Toshitane;K. Sorimachi
中科院分区：
文献类型：
--
作者：
Itoyama Seiji;H. Tozawa;Tetsuo Mochida;Kurokawa Katsumi;Matsukawa Toshitane;K. Sorimachi
为了在不增加漏钢可能性的情况下减小结晶器振痕深度，开发了一种新的连铸结晶器振动方法--“水平振动法”。在这种方法中，模具的宽面与传统的垂直振动同步地水平振动。研究了在不同结晶器振动条件下，SUS304板坯在不同结晶器振动条件下的振痕。水平振动成功地减小了振痕的深度和振痕处的表面偏析，当结晶器的宽面在正向剥离时间内向凝固型壳扩张时，水平振动非常有效。用一台实际机器进行的实验重现了水平振荡的这些效应。为了研究水平振动对半月板附近早期凝固控制的影响，对铸坯在垂直振动周期内的变形进行了数值分析。文中还讨论了作用在弯月面附近壳体上的摩擦力，以解释表面偏析的减少。
A new method of mold oscillation for continuous casting termed "horizontal oscillation" was developed to reduce the depth of oscillation marks without increasing the possibility of breakout. In this method, the wide faces of the mold oscillate horizontally in synchronization with conventional vertical oscillation. Oscillation marks on slabs of SUS304 cast with a pilot continuous caster were examined under various conditions of mold oscillation. Horizontal oscillation successfully reduced the depth of oscillation marks and surface segregation at oscillation marks, and was extremely effective when the wide face of the mold was expanded against the solidified shell during positive strip time. Experiments with an actual machine reproduced these effects of horizontal oscillation. A numerical analysis of the deformation of the solidified shell during one cycle of vertical oscillation was performed to study the effect of horizontal oscillation on the control of early solidification near the meniscus. Friction force acting on the shell near meniscus was also discussed to explain the reduction in the surface segregation.