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利用SEM和EDS分析了不同氧含量的冷轧搪瓷钢板中夹杂物的微观形貌和化学成分,采用电解法提取钢中的氧化物夹杂并用ICP进行定量分析,且通过氢渗透法研究了钢板的抗鳞爆敏感性。结果表明:铝镇静钢(w(O)为0.003%)中主要夹杂物为MnS和Al2O3,高含氧钢(w(O)为0.011%~0.021%)中主要夹杂物为MnS和Mn-Nb复合氧化物。w(O)<0.019%时,随着w(O)增加,钢中氧化物夹杂质量分数增大,钢板氢渗透时间呈线性增加趋势,抗鳞爆性能增强;当w(O)>0.019%时,氧化物夹杂质量分数反而下降,氢渗透时间缩短,抗鳞爆性能减弱;同时,钢水中w(O)越高,耐火材料的侵蚀越严重,不利于连铸生产。
The microstructure and chemical composition of the inclusions in cold-rolled enameled steel plates with different oxygen contents were analyzed by SEM and EDS. The oxide inclusions in steel were extracted by electrolysis and quantified by ICP. The hydrogen permeation Anti-scale explosion sensitivity. The results show that the main inclusions in the Al-killed steel (0.003% w) are MnS and Al2O3, and the main inclusions in the high-oxygen steel (w (O) is 0.011% -0.021%) are MnS and Mn-Nb Complex oxides. When w (O) <0.019%, the mass fraction of oxide inclusions in steel increases with the increase of w (O), the hydrogen permeation time increases linearly and the anti-scale explosion performance increases. , The content of oxide inclusions decreases but the hydrogen permeation time decreases and the anti-scale explosion performance weakens. At the same time, the higher the w (O) in molten steel, the more severe the refractory erosion, which is not conducive to continuous casting production.