Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Regular Article
Hydrogen-induced Breakout in Continuous Casting of Non-degassed Steel
Yoshiyuki UeshimaToshiaki MizoguchiYukiko TakagiKatsumi KondoHisashi Kato
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JOURNALS FREE ACCESS

2012 Volume 98 Issue 10 Pages 526-533

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Abstract

Hydrogen-induced sticker breakouts in aluminum-killed steel production without a degassing route have often been reported elsewhere, but so far, yet the mechanism has not been thoroughly explained quantitatively. In order to obtain a better understanding of this phenomenon, hydrogen gas evolution from the solidified shell at the early stage of solidification in continuous casting was analyzed, taking into account the δ→γ transformation. It is concluded that lower hydrogen contents, lower casting speeds and higher consumption rates of mold powder are preferable to prevent the hydrogen-induced breakouts of aluminum-killed non-degassed steel.

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© 2012 The Iron and Steel Institute of Japan
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