论文部分内容阅读
本文提出了模拟连铸小方坯凝固的二维数学模型,并验证了它是符合R5.25连铸机小方坯生产实际的。本文以某厂R5.25小方坯连铸机为例计算了不同操作因素(拉速,比水量,浇注温度等)对连铸小方坯凝固的影响,并给出了影响关系的图表。本文通过计算指出:比水量是影响铸坯表面温度的主要因素。对液芯深度影响较小,而拉速是影响液芯深度的主要因素。最后,提出了150~2mm小方坯生产合理二冷工艺的建议,并给出了120~2mm小方坯连俦时过热度与拉速的关系图。
This paper presents a two-dimensional mathematical model for simulating continuous casting billet solidification and verifies that it conforms to the actual production of billet of R5.25 continuous casting machine. In this paper, a plant R5.25 billet caster as an example to calculate the different operating factors (casting speed, specific water, pouring temperature, etc.) on the continuous casting billet solidification, and gives the relationship between the impact of the chart. In this paper, the calculation shows that: the specific water is the main factor affecting the slab surface temperature. The depth of the liquid core less affected, and pulling speed is the main factor affecting the depth of the liquid core. Finally, the suggestion of reasonable secondary cooling process for 150 ~ 2mm billet production was put forward, and the relationship between superheat and pulling speed of continuous billet of 120 ~ 2mm was given.