Hydrogen pick-up after vacuum degassing
2015 (English)In: Ironmaking & steelmaking, ISSN 0301-9233, E-ISSN 1743-2812, Vol. 42, no 1, 49-54 p.Article in journal (Refereed) Published
The present work aimed at determining the major source for hydrogen pick-up of the steel after vacuum degassing but before casting. Samples of slag and metal were taken at different stages during ladle treatment at SSAB. Hydrogen increase after vacuum treatment was observed. Moisture contents of the industrial slags were analysed and their water capacities were calculated. It could be seen that the hydrogen increase was correlated to the amount of moisture in the slag and the water capacity. The study showed that the slag containing most water was also the heat having the largest hydrogen increase. The slag with most water had the highest water capacity. It could be concluded that the major source for hydrogen increase after degassing was due to the slag-metal reaction.
Place, publisher, year, edition, pages
2015. Vol. 42, no 1, 49-54 p.
Hydrogen, Steel making, Vacuum treatment, Hydroxyl capacity, Ladle, Industrial slag
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-158428DOI: 10.1179/1743281214Y.0000000199ISI: 000346147400007ScopusID: 2-s2.0-84911164886OAI: oai:DiVA.org:kth-158428DiVA: diva2:777898
QC 201501092015-01-092015-01-082015-08-25Bibliographically approved