Examination of nozzle clogging in continues casting

B. Harcsik; P. Tardy; G. Karoly

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Examination of nozzle clogging in continues casting

机译：Examination of nozzle clogging in continues casting

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Formation of deposits inside the submerged entry nozzles used in continuous casting of especially low-silicon Al-killed mild steels may often cause nozzle clogging and casting disorder. Technological experience has shown that the application of Ca-treatment before casting usually eliminates this phenomenon. In order to understand deposit formation and the way it can be avoided, we have carried out detailed mineralogical analyses of the deposits formed on the inner and outer surfaces of the nozzles by different techniques. Results obtained from deposits formed during the casting of only Al-killed and subsequently Ca-treated steels show that the results obtained from deposits formed during the casting of only Al-killed and subsequently Ca-treated steels show that the alumina inclusions carried to the wall of the nozzle form the matrix of the dangerous deposits. Application of Ca-treatment resulted in mostly liquid aluminates compounds and almost negligible deposit formation. The outer surface of the nozzles however showed similar deposit formation because of possible reoxidation of dissolved aluminium.

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来源
《Revue de Metallurgie: Cahiers d'Informations Techniques》 |2012年第3期|177-186|共10页
作者
B. Harcsik; P. Tardy; G. Karoly;
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作者单位

Institute of Metallurgy and Foundry Engineering, University of Miskolc, Hungary.;

Association of the Hungarian Steel Industry;

Institute of Metallurgy and Foundry Engineering, University of Miskolc, Hungary;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类冶金工业;
关键词
Continuous casting; inclusions; clogging; calcium treatment; aluminates;

Examination of nozzle clogging in continues casting

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