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应用有限元数值计算方法研究了电子束冷床熔炼连铸钛锭过程中水冷结晶器高度及厚度对大规格钛锭固液界面形貌的影响规律。结果表明:在相同的工艺条件下,随着水冷结晶器的高度增加,钛锭的熔池深度逐渐降低,当水冷铜结晶器高度超过结晶器有效散热高度(300)mm后,钛锭的固液界面形貌趋于稳定;随着水冷结晶器厚度的增加,钛锭的熔池深度逐渐增加,固相率逐渐降低,但钛锭固液界面的熔池形貌变化不显著。
The effect of water-cooled crystallizer height and thickness on the morphology of solid-liquid interface of large-size ingot was studied by finite element numerical method. The results show that under the same process conditions, with the increase of the height of the water-cooled crystallizer, the depth of the molten pool of the ingot gradually decreases. When the height of the water-cooled copper crystallizer exceeds the effective cooling height of the crystallizer (300 mm) With the increase of the thickness of the water-cooled crystallizer, the depth of the molten pool of the titanium ingot gradually increases and the solid fraction gradually decreases. However, the morphology of the molten pool in the solid-liquid interface does not change significantly.