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应用化学分析,X-射线荧光分析,X-射线结构分析,定量金相图象分析仪、电子探针、离子探针、扫描电镜等测试方法,对大量的高铝水口结瘤实物进行了分析.实验结果表明:钢瘤中有大量的稀土硫氧化物、稀土氧化物以及稀土铝酸盐;水口结瘤主要是由于钢液中这些稀土夹杂物在水口处粘附、烧结而造成的.钢液中稀土与水口耐火材料作用所生成的铝酸稀土与钢液中稀土夹杂物之间的界面能较低,有利于稀土夹杂物在其上粘附和烧结,起着衬底的作用,促进了结瘤.改变水口材质和脱氧剂,均对防止结瘤有较大的影响.
A large number of high-aluminum nozzle nodules were analyzed using chemical analysis, X-ray fluorescence analysis, X-ray structure analysis, quantitative metallographic image analyzer, electron probe, ion probe and scanning electron microscope The experimental results show that there are a large amount of rare earth sulfur oxides, rare earth oxides and rare earth aluminates in the steel nodules, and the nodules in the water nozzles are mainly caused by the adhesion and sintering of these rare earth inclusions in the molten steel. The rare earth aluminate and rare earth inclusions in liquid steel produced by the effect of rare earth and water refractories in the liquid have a low interfacial energy between the rare earth inclusions and the rare earth inclusions, which helps to adhere and sinter the rare earth inclusions. The nodulation change nozzle material and deoxidizer, are to prevent nodulation have a greater impact.