Improvement of electric slag remelting process for heat-resistant steel 10Cr11Co3W3NiMoVNbNB used in ultra-supercritical units
In order to solve the problem of excessive Si and Al content and uneven B content in the electric slag remelting process of 10Cr11Co3W3NiMoVNbNB steel,the slag system and auxiliary materials were adjusted based on the affinity order of Si,Al,and B with oxygen,and different proportions of auxiliary materials were added in experiments.Finally,the B content at the head and bottom of 10Cr11Co3W3NiMoVNbNB steel ingot was uni-form,and the composition of easily burned elements such as Al and Si met the technical requirements.
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