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推导了非规范正交曲线坐标系下，直流电弧电渣钢包炉磁场强度输运方程，并给出了相应的磁场强度的边界条件，进行了三维数值计算，预测结果与现场测量结果基本一致，所揭示的规律对实际生产有重要的指导意义．
The magnetic field strength transport equations of DC arc-slag electroslag furnace under non-canonical orthogonal curvilinear coordinate system are deduced. The corresponding magnetic field strength boundary conditions are given. The three-dimensional numerical calculation is carried out. The predicted results are in good agreement with the field measurements. The disclosed rules have important guiding significance for actual production.