铝镁质浇注料抗高锰高铝钢液侵蚀研究  

Research on corrosion resistance of alumina-magnesia castable to high manganese-high aluminum molten steel

作　　者：秦川江 黄奥[1] 王璐[1] 顾华志[1] 薛正良[1] QIN Chuanjiang;HUANG Ao;WANG Lu;GU Huazhi;XUE Zhengliang(The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China)

机构地区：[1]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081

出　　处：《钢铁研究学报》2023年第8期999-1007,共9页Journal of Iron and Steel Research

基　　金：国家自然科学基金联合基金资助项目(U20A20270);湖北省自然科学基金杰出青年基金资助项目(2021CFA071)。

摘　　要：Fe-Mn-Al-C系低密度高强钢是前景广阔的先进钢材之一,其中添加有高含量Mn、Al等合金元素,在熔炼过程中与耐火材料反应,会造成材料蚀损及影响钢液洁净度。因此,针对钢包用铝镁质浇注料,采用坩埚法开展其抗高锰高铝钢侵蚀实验,探讨不同反应条件下钢液对浇注料的侵蚀行为和钢中夹杂的变化规律。结果表明:主要是钢中Mn对耐火材料扩散渗入较严重,与材料反应变质破坏结构,而随Al添加量增加会呈现对侵蚀的先抑制再逐步促进作用;随着反应时间延长,钢液对耐火材料侵蚀逐渐加剧,冶炼90 min后的钢中总O含量及非金属夹杂物略有增加。但总体上,钢液对铝镁质浇注料的最大侵蚀率仅7.07%,且对钢液质量的预期影响也相对有限,能适应高锰高铝钢的冶炼。Fe-Mn-Al-C based low-density high-strength steel is one of the promising advanced steels,in which high contents of alloy elements such as Mn and Al are added,which will cause material corrosion and affect the cleanliness of molten steel when it reacts with refractories in the smelting process.For the alumina-magnesia castable used in ladle,the corrosion resistance experiment of high manganese-high aluminum steel was carried out by crucible method,and the corrosion behavior of molten steel on the castable and the change of inclusions in the steels under different reaction conditions were discussed.The results show that the diffusion and infiltration of Mn into the refractories is serious,and the material structure is degraded by metamorphic reactions.With the addition of Al and the increase of the content of Al,the corrosion is inhibited initially and then accelerated gradually;With the extension of reaction time,the corrosion of molten steel on the refractories is gradually intensified,and the total oxygen content and non-metallic inclusions increase slightly in the steel after smelting for 90min.In general,the maximum corrosion rate of molten steel to the alumina-magnesia castable is only 7.07%,and the influence on the quality of molten steel is limited,which can adapt to the smelting of high manganese-high aluminum steel.

关 键 词：铝镁质浇注料 高锰高铝钢 侵蚀 非金属夹杂物 

分 类 号：TF065.1[冶金工程—冶金物理化学]