The harm and action mechanism of sulfur in nickel base superalloy were summarized, indicating the necessity of further controlling the sulfur content in the alloy. In order to further improve the desulfurization efficiency of electroslag remelting nickel base superalloy in electroslag remelting furnace, the desulfurization effect of electroslag remelting process of GH4169 under different remelting conditions was experimentally studied, and the experimental results were thermodynamically analyzed and discussed.
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