Effect of Nozzle Base Material on the Rate of Clogging during the Continuous Casting of Aluminum‐Killed Steels
Effect of Nozzle Base Material on the Rate of Clogging during the Continuous Casting of Aluminum‐Killed Steels
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DOI：
10.1002/srin.200606128
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发表时间：
2006-01
影响因子：
2.2
通讯作者：
Luis Trueba;K. Peaslee;Jeffrey D. Smith;M. Karakus
中科院分区：
文献类型：
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作者：
Luis Trueba;K. Peaslee;Jeffrey D. Smith;M. Karakus
解决铝镇静钢连铸过程中水口堵塞问题的一种方法是仔细选择水口材料。在这项研究中，通过由氧化铝、氧化锆、氧化镁、氧化锆-石墨和氧化铝-石墨-三种常见的基材和两种常见的含碳水口材料制成的模拟水口浇铸钢时，测量了堵塞率。使用光学和阴极发光显微镜的特点是用喷嘴。在氧化铝、氧化锆和氧化锆-石墨喷嘴中未观察到喷嘴与钢之间的相互作用。在氧化镁水口中观察到轻微的相互作用，因为钢中的氧化铝夹杂物与水口相互作用以产生氧化铝-氧化镁尖晶石。使用氧化铝-石墨喷嘴时观察到更大的相互作用。在所有纯氧化物喷嘴和氧化锆-石墨喷嘴之间未观察到平均堵塞率的统计学差异。然而，氧化铝-石墨喷嘴的堵塞率比其他喷嘴高得多。较高的堵塞率被认为是由于耐火钢的相互作用。
One approach to solving the problem of nozzle clogging during the continuous casting of aluminum‐killed steels is through careful selection of nozzle materials. In this study, the rate of clogging was measured while casting steel through simulated nozzles produced from alumina, zirconia, magnesia, zirconia‐graphite, and alumina‐graphite ‐ three common base materials and two common carbon‐containing nozzle materials. Spent nozzles were characterized using optical and cathodoluminescence microscopy. Interactions between the nozzles and steel were not observed in the alumina, zirconia, and zirconia‐graphite nozzles. Slight interactions were observed in the magnesia nozzles as alumina inclusions within the steel interacted with the nozzle to produce alumina‐magnesia spinel. Greater amounts of interaction were observed with alumina‐graphite nozzles. No statistical differences in the mean rate of clogging were observed between all of the pure oxide nozzles and zirconia‐graphite nozzles. However, the alumina‐graphite nozzles clogged at a much higher rate than the other nozzles. The higher rate of clogging is thought to be due to refractory‐steel interactions.