Page 70 - 国外钢铁技术信息内参（ 2022年5月）

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（四）在 Dofasco 1#铸机利用微 X 射线荧光分析研究

飞包和插铁板过程 ᇏݓࣁඋ࿐߶

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Jackie Leung an Manh Kha Trinh 2
1

（1.ArcelorMittal Global R& D Hamilton；

2. ArcelorMittal Dofasco G.P.）

摘要：为进一步提高产量，不同成分的钢种需要连浇，因此飞包与结晶器插铁 ᇏݓࣁඋ࿐߶

板是不可避免的。尽管这些操作能够分离钢种，但仍有一定混合，并在板坯上形
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成了独特的“接痕”印记。采用微 X 射线荧光分析与其他先进材料表征方法研究了

多块板坯的“接痕”形貌。本文展示了在安赛乐米塔尔 Dofasco 公司 1#铸机开展的

大量研究工作的结论，并提出了“接痕”印记的形成机理。

关键词：连铸、飞包、插铁板、混合、微 X 射线荧光

Investigation on Flying Tundish Change and

Separation Plate Using Micro-X-Ray Fluorescence at
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ArcelorMittal Dofasco’s No. 1 Continuous Caster

ABSTRACT：To optimize productivity, steel grades of different chemistries are

often cast sequentially. This can include flying tundish changes and grade separation

plates inserted into the mold. Although these practices aim to separate the grades,

some mixing is still possible. A unique imprint of the crater shape in the as-cast slab is
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formed as a result. Micro-x-ray fluorescence, in addition to several other innovative

tools and techniques, was used to reveal and analyze the crater shape from multiple

slabs. This paper reviews findings from the extensive investigation carried out at

ArcelorMittal Dofasco and proposes an explanation of the imprint’s formation.
原文参考CMISI数据库： AISTech 2021—Proceedings of the Iron & Steel

Technology Conference 29 June-1 July 2021,Nashville, Tenn., USA
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