SiCaBa合金对55SiCr弹簧钢的脱氧脱硫及夹杂物控制研究

Jinwen Liu,Zhanpeng Tie,Luzhao Guo,Shuo Zhang,Jiaquan Zhang,Haiyan Tang

Special Steel（2020）

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Abstract

针对服役条件要求苛刻的55SiCr气门弹簧钢,采用高温管式炉试验研究了低氧条件下向钢中加入SiCaBa合金的脱氧、脱硫及夹杂物控制规律.结果表明,SiCaBa合金有进一步深脱氧、深脱硫的效果,并可细化夹杂物尺寸;在钢中加入0.48 kg/t钢的SiCaBa合金(49.8％ Si-25.6％ Ca-11.1％ Ba)和Fe2O3含量低于1％的精炼渣能使T[O]和[S]分别降至11×10-6和8×10-6.

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