Alloy consumable electrode and segregation control method based on composition space distribution

Abstract

This invention discloses an alloy consumable electrode based on spatial composition distribution and a method for segregation control, relating to the field of VAR melting technology. The easily segregating alloying elements within the alloy consumable electrode are symmetrically distributed around the axis of symmetry of the electrode's cross-section, with the easily segregating alloying elements on either side forming several alloy element enrichment zones. Specifically, on either side of the axis of symmetry of the alloy consumable electrode's cross-section, the alloy element concentration in the enrichment zones gradually decreases from the axis of symmetry along the edge of the electrode. This invention precisely controls the macroscopic distribution geometry of the alloying elements within the electrode, causing them to accumulate at the central rectangular cross-section of the electrode block. It actively utilizes the physical field during the VAR melting process to guide the easily segregating elements to diffuse in a more uniform direction, thereby fundamentally improving the axial and radial compositional uniformity of the ingot.

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