固定自耗电极充填法电渣熔铸熔池形状的研究

Electroslag Casting by Fixed Consumable Electrode Filling Method

利用大型有限元分析软件ANSYS,对固定自耗电极充填法电渣熔铸金属熔池形状进行了数值模拟与实验研究。研究发现,当铸锭尺寸为400 mm×70 mm×200 mm时,金属熔池形状在铸锭宽度纵截面呈半椭圆形,金属熔池空间形状呈倒置的驼峰形,移动自耗电极中心处的金属熔池深度最大。实验结果与模拟结果基本吻合,验证了模拟程序的准确性。根据工艺参数对熔池形状的影响,发现移动自耗电极电流与横截面积的相互匹配是固定自耗电极充填法电渣熔铸工艺设计的关键。

The shape of electroslag casting(ESC)molten pool with fixed consumable electrode filling method was numerically simulated and experimentally studied by using the finite element analysis software ANSYS.The results show that when the ingot size is 400 mm×70 mm×200 mm,the longitudinal section of the metal molten pool is half elliptic,the space shape of the molten pool is inverted hump shape,and the depth of the molten pool at the center of the moving consumable pole is maximum.The experimental results are consistent with the simulation results,and the accuracy of the simulation program is verified.According to the influence of process parameters on the shape of molten pool,it is found that the matching of moving consumable electrode current and cross-sectional area is the key to the design of electroslag fusion casting process with fixed consumable electrode filling.