Effect of Trace of Oxygen in Ar Gas on Initial Growth of Nozzle Clogging Deposits on SEN for Ti Added Ultra‐Low C Steel Casting
Rattachement africain : kr. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The possibility of reoxidation of Ti‐ultra‐low C (Ti‐ULC) steel by a trace of oxygen in Ar gas, which is injected in a submerged entry nozzle (SEN), is investigated. A commercial‐grade unpurified Ar gas with P O2 = ≈10 −4 bar and a purified Ar gas with P O2 = ≈10 −18 bar by a set of cleaning kits are employed. Preliminary thermodynamic calculations revealed that the unpurified Ar gas could cause significant oxidation of the Ti‐ULC steel, irrespective of the steel composition, while the purified Ar gas did not oxidize the steel. A series of laboratory‐scale oxidation experiments are carried out using various Ti‐ULC steel samples and the two Ar gases. The oxidation under unpurified Ar gas causes the oxidation of all the samples but only on the surface, in partial agreement with the thermodynamic calculation. The partial agreement between the calculation and the experiment is explained by the availability of oxygen and other metallic elements. It is found that the trace of oxygen in a commercial grade of Ar gas could cause reoxidation of Ti‐ULC steel in an SEN, which may be no better than the reoxidation by CO gas generated by the carbothermic reaction in the SEN refractory. A purity control of Ar gas is recommended.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Effect of Trace of Oxygen in Ar Gas on Initial Growth of Nozzle Clogging Deposits on SEN for Ti Added Ultra‐Low C Steel Casting
- Date Crossref
- 22/06/2022
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Pohang University of Science and Technology Graduate Institute of Ferrous and Energy Materials Technology pays non établi dans la noticeUniversité ou école supérieure
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Pohang Iron and Steel (South Korea) pays non établi dans la noticeEntreprise
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Research Institute of Industrial Science and Technology pays non établi dans la noticeStructure de recherche
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Technical Research Laboratories POSCO Pohang 37859 Kyungbuk Republic of Korea pays non établi dans la noticeInstitution
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Technical Research Laboratories POSCO Gwangyang 57807 Cheonnam Republic of Korea pays non établi dans la noticeInstitution
Graduate Institute of Ferrous and Energy Materials Technology — Pohang University of Science and Technology, Pohang Iron and Steel (South Korea) et Research Institute of Industrial Science and Technology, avec 2 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.