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冶炼低磷不锈钢的Duplex法(混合法)主要是由氧化脱磷和还原脱磷两个工艺过程组成。氧化脱磷工艺,即在一座电炉中冶炼无Cr钢水,控制CaO量和吹氧量,使钢水含P低于0.002％。还原脱磷工艺,即在另一座电炉中冶炼高Cr钢水,利用CaC_2进行脱磷。研究表明,当CaC_2加入量为4％,温度1600℃,炭的活度0.03～0.2时,高Cr钢水的
Duplex method of smelting low phosphorus stainless steel (mixing method) is mainly composed of two processes of oxidative dephosphorization and reduction dephosphorization. Oxidative dephosphorization process, that is, smelting Cr-free molten steel in an electric furnace, controlling the amount of CaO and blowing oxygen, so that the molten steel containing P less than 0.002%. Reduction dephosphorization process, that is, smelting high Cr molten steel in another electric furnace, the use of CaC_2 dephosphorization. The results show that when the amount of CaC_2 is 4%, the temperature is 1600 ℃ and the activity of carbon is 0.03 ~ 0.2,