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通过钢水和耐火材料之间的相互作用,可以在浸入式水口(SEN)内壁上形成沉积或变质层。用化学热动力学分析软件装置进行模拟,热化学反应定量解释了这些相互作用。预期的与从高温静态试验中获得的结果进行比较。在这些试验中,含有和不含有铝的钢在从含有和不含有碳的不同氧化物耐火材料中制得的耐火坩埚内熔融。采用阴极发光(CL)显微技术、反射光(RL)显微技术和扫描电子显微技术(SEM)来研究耐火材料-金属界面试样的特性,以了解相互反应并确定耐火材料和钢成分对堆积物形成的影响。显微技术资料和热动力学预测都表明,含碳耐火材料,尤其是镁碳和铝硅碳,导致大幅度的和钢相互反应。所有无碳和无杂质材料几乎没有什么相互反应。
Through the interaction between the molten steel and the refractory material, a deposited or altered layer can be formed on the inner wall of the submerged entry nozzle (SEN). The chemical thermodynamic analysis software was used to simulate the thermochemical reactions to explain these interactions quantitatively. The expected results are compared to the results obtained from the high-temperature static test. In these tests, steels with and without aluminum were melted in a refractory crucible made from different oxide refractory materials, with and without carbon. Cathode luminescence (CL) microscopy, Reflectance Light (RL) microscopy and Scanning Electron Microscopy (SEM) were used to study the properties of the refractory-metal interfacial coupons in order to understand the mutual reaction and to identify the refractory and steel components Impact on deposit formation. Both microscopic data and thermodynamic predictions have shown that carbonaceous refractory materials, especially magnesium and aluminum silicon, lead to substantial and steel reactions. Almost none of the carbon-free and impurity-free materials react to each other.