OALib Journal期刊
ISSN: 2333-9721
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真空感应炉氧化镁坩埚熔炼纯铁的研究
, PP. 145-156
Abstract:
用容量为10公斤的真空感应炉研究了在电熔氧化鎂坩堝中熔炼純鉄时熔池中碳和氧的反应,以及坩堝在这个反应中所起的作用。証实在熔炼过程中坩堝不断向熔池供氧,因此熔池的含氧量在降低到最低值后重新回升。在10~(-4)(及10~(-1))毫米汞柱的炉压下,发現熔池中的[%C]·[%O]乘积都达到6×10~(-6)至3.5×10~(-5)之間的数值。当配料含碳0.03—0.05%而含氧为其一半时,可以得到含碳0.006%以下、含氧0.003%以下的高純度铁。坩堝对熔池的影响随着使用次数的增长而減弱。熔池的氧浓度对最終含氮量有显著影响。含氧量越高,脫氮就越慢。
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