在30 kg真空感应炉上进行脱氧、脱氮试验，结果表明，通过控制冶炼的温度及真空度来控制坩埚热分解的供氧和碳脱氧反应速率，可将原料纯铁中的氧的质量分数降低到20×10-6以下。通过加强钢液的C-O反应，降低钢液中的氧含量，有利于钢液的脱氮。通过对夹杂物的统计发现，随着钢中全氧含量的降低，残留在钢中的氧化物夹杂数量明显减少，夹杂物尺寸明显变小。
Deoxidation and denitrification were conducted in a 30 kg vacuum induction furnace. Results showed that oxygen in the smelted raw material ( pure iron) can be decreased to below 20 × 10 -6 through controlling the smelting temperature and the vacuum degree, so that the rates of oxygen feed and deoxidizing reaction can be controlled. It is beneficial for the hot metal to the deoxidized through enhancing C-O reaction and decreasing the oxygen content. The statistics of inclusions show that the amount of oxide inclusions residual in the molten steel and the size of inclusions decrease with decrease of total oxygen content.
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