Q355低合金结构钢非金属夹杂物演变过程  

Evolution Process of Non-metallic Inclusions in Q355 Low Alloy Structural Steel

作　　者：唐巍 郭健 Tang Wei;Guo Jian(HBIS Tangsteel Technical Center,Tangshan Hebei 063000)

机构地区：[1]河钢唐钢技术中心,河北唐山063000

出　　处：《山西冶金》2023年第2期69-71,共3页Shanxi Metallurgy

摘　　要：对全精炼冶炼过程LF精炼进站、造渣后、喂铝后、钙处理后的Q355低合金结构钢进行取样,以20μm为界限分类,利用扫描电镜分析不同粒径非金属夹杂物的演变过程。结果表明:夹杂物类型变化规律为SiO_(2)-MnO→Al_(2)O_(3)-SiO_(2)-MnO→Al_(2)O_(3)-CaO-MgO。By sampling low-alloy structural steel Q355 during the whole LF process,after entering LF,slagging,aluminum feeding and calcium treatment.The evolution process of non-metallic inclusions with different particle sizes was analyzed by scanning electron microscopy(SEM)with the boundary of 10μm.The results show that the inclusions change in the order of:SiO_(2)-MnO→Al_(2)O_(3)-SiO_(2)-MnO→Al_(2)O_(3)-CaO-MgO.

关 键 词：低合金结构钢 夹杂物 演变过程 

分 类 号：TG142.41[一般工业技术—材料科学与工程]