Inclusions Distribution in IF Steel Slabs
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摘要: 针对某厂BOF-RH-CC流程生产的IF钢连铸坯，采用金属原位分析、扫描电镜分析和能谱分析等，综合分析铸坯厚度和宽度方向上夹杂物的含量和尺寸的分布以及夹杂物的形貌。结果表明：夹杂物在铸坯宽度方向上分布均匀；头坯夹杂含量明显高于其他坯次；在铸坯厚度方向上，距离内弧20 mm左右处出现一个夹杂物聚集带，此处的夹杂物含量明显高于其它部位；大部分夹杂物的尺寸为0~5μm，少量夹杂尺寸超过10μm，且在距离内弧20 mm处聚集。Abstract: The size,number and morphology of inclusions in IF steel produced by BOF-RH-CC process were analyzed by scanning electronic microscopy(SEM),energy dispersive X-ray spectroscopy(EDS),and metal original position analysis(OPA).The results show that inclusions distribute uniformly along the width direction; the number of inclusions in head slab is much larger than those in other slabs;there is an inclusion accumulation zone around 20 mm away from the inner arc surface where the inclusion content is much higher than those in other positions.The sizes of the inclusions are mainly in 0~5 μm and there is a small amount of inclusions larger than 10 μm gathering in the areas around 20 mm away from the inner arc surfaces of slabs.
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Key words:
- IF steel /
- inclusion /
- original position analysis (OPA) /
- slab
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