| 摘要 |
Hydrogen and oxygen are removed from molten steel by simultaneously subjecting molten steel to agitation, an alternating current heating arc, and two successive levels of vacuum, one level of vacuum being relatively low and above the glow range and of relatively long duration to substantially decrease the oxygen content of the molten steel; the other level of vacuum being relatively high and below the glow range and of relatively short duration to substantially decrease the hydrogen content of the molten steel.
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