Numerical simulation of carbon segregation during electroslag remelting of W9Mo3Cr4V high speed steel with vibrating electrode
A coupling model of two-dimensional axisymmetric unsteady electromagnetic field, flow field, temperature field and component transport of electroslag remelting W9Mo3Cr4V high speed steel with vibrating electrode is established. The segregation behaviors and influence rules of carbon are analyzed. The slag/gold interface is tracked by VOF model, and the solute redistribution behavior under non-equilibrium conditions is regulated by Lever algorithm. The interaction between different elements in the ingot is also considered. The simulation results show thatcompared with the traditional process, the vibration electrode electroslag remelting process can significantly improve the degree of segregation of carbon, the maximum positive segregation index decreasesby 14.07％ from 0.135 to 0.116, the maximum negative segregation index increasesby 15.32％ from -0.124 to-0.105, and the increase of w( W) increases the degree of segregation of carbon. When w( W ) increases from 9％ to 9.5％, the maximum positive segregation increases by 7.11％ and the maximum negative segregation increases by 10.3％.
electroslag remeltingcarbon segregationcomponent transport
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