SPHC薄板坯中夹杂物分布行为研究

摘要

The non-metallic inclusions have a critical influence on the quality of the sheet billet. In the current study, the distribution, size and morphology of the non-metallic inclusion in SPHC sheet billet were analyzed using SEM, EDS and sample-electrolysing. The results showed that the total oxygen content distributed uniformly in the billet. The sulfur content was highest at the center of thickness direction and it was higher at the side of inner arc than at the side of outer arc. The amounts of large inclusions were most at the center and it was least at the side on the width direction.%铸坯中的非金属夹杂物对钢材质量具有至关重要影响.使用扫描电镜以及大样电解法等方法对SPHC薄板坯内非金属夹杂物的分布、尺寸、形貌等进行了研究.结果表明:薄板坯中,全氧分布较为均匀；厚度方向中心处的硫含量要明显高于内外弧,而外弧侧的硫含量要高于内弧侧；边部的大型夹杂要低于1/4处和中部位置的夹杂,中部的大型夹杂是最多.