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在大规格钛扁锭半连铸过程中,固相分数和熔池形貌对得到优质钛锭有着重要影响。本文以有限元为基础,采用数值模拟计算方法对大规格钛扁锭半连铸过程进行非稳态计算,重点研究了不同生产工艺条件对固相分数和熔池形貌的影响。研究表明,随着浇注温度和拉锭速度的增加,固相分数和熔池形貌变化区域的长度呈线性减小,钛锭熔池深度和钛锭1/4处熔池的深度呈线性增加。相对于浇注温度,拉锭速度对固相分数的影响更为显著。
In the large-scale titanium slab semi-continuous casting process, the solid fraction and the shape of the molten pool to obtain high-quality titanium ingot has an important impact. Based on the finite element method, numerical simulation is used to calculate the unsteady state of the semi-continuous casting of large-size titanium ingots. The effects of different production process conditions on the solid fraction and the shape of the molten pool are mainly studied. The results show that with the increase of pouring temperature and drawing speed, the solid fraction and the area of the weld pool vary linearly, and the depth of the ingot melt pool increases linearly with the depth of the weld pool . Compared with the pouring temperature, the effect of the spindle speed on the solid fraction is more significant.