Characterization of Nonmetallic Inclusions in Low-Alloyed Steels Using Pulse Distribution Analysis Optical Emission Spectroscopy and Offline Investigation Methods,Steel Research International

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Characterization of Nonmetallic Inclusions in Low-Alloyed Steels Using Pulse Distribution Analysis Optical Emission Spectroscopy and Offline Investigation Methods
Steel Research International ( IF 1.9 ) Pub Date : 2021-07-06 , DOI: 10.1002/srin.202100223
Hongying Du ₁ , Annika Yang ₂ , Andrey V. Karasev ₁ , Pär G. Jönsson ₁

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The characteristics of nonmetallic inclusions (NMIs) in low-alloyed steel samples taken during ladle treatment before and after Ca treatment are evaluated using the pulse distribution analysis optical emission spectroscopy (PDA/OES) method, INCA-Feature investigations of inclusions on a polished surface of steel samples, and 3D investigations of NMIs after electrolytic extraction (EE) of steel samples. The investigation results of NMIs using the different methods were compared. The PDA/OES results show a clear tendency of a change in the average composition and quantity of NMIs during ladle treatment, which correlates well with the results obtained from the other two methods. Overall, it is found that the application of the PDA/OES method is appropriate to enable a fast online evaluation of inclusion compositions and their behaviors during steelmaking. This, in turn, provides the means for establishing an online control and correction of technological operations of the ladle treatment to implement necessary modification of NMIs to improve the cleanliness of steels and avoid clogging problems during casting.

中文翻译：

使用脉冲分布分析光学发射光谱和离线调查方法表征低合金钢中的非金属夹杂物

使用脉冲分布分析光学发射光谱 (PDA/OES) 方法、INCA-抛光表面夹杂物的特征研究，评估在 Ca 处理前后钢包处理期间采集的低合金钢样品中非金属夹杂物 (NMI) 的特征钢样品，以及钢样品电解提取 (EE) 后 NMI 的 3D 研究。比较了使用不同方法对NMI的调查结果。PDA/OES 结果显示在钢包处理期间 NMI 的平均组成和数量有明显变化的趋势，这与其他两种方法获得的结果相关。总体，结果表明，PDA/OES 方法的应用适用于在炼钢过程中对夹杂物成分及其行为进行快速在线评估。这反过来又提供了建立在线控制和纠正钢包处理工艺操作的手段，以实施必要的 NMI 修改，以提高钢的清洁度并避免铸造过程中的堵塞问题。

更新日期：2021-07-06

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