通过枝晶腐蚀、冷酸蚀、热酸蚀、金相、扫描电镜及能谱等检验手段,对SPHE连铸坯中的夹杂物进行了检验和分析。检验发现在连铸坯内弧厚度1/4处有夹杂物聚集带,铸坯中的夹杂物主要为脱氧产物Al2O3,尺寸不大。并提出减少连铸坯夹杂物缺陷的几项措施。
Inclusions in SPHE continuous casting slab were tested and analyzed by dendrite corrosion, cold acid etching, hot acid etching, OM(optical microscope), SEM(scanning electron microscope), EOS(energy dispersive spectrometer) and so on. The inclusions aggregation zone was found in 1/4 of inner arc in thickness of continuous casting slab, the composition of inclusions was main Al2O3, whose size was small. Some measures of reducing inclusions defect in continuous casting slab were proposed.
参考文献
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