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Slag Pool Depth Effectiveness of Molten Mold Flux Feeding Technology

  • 06-07-2020
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Abstract

POSCO’s advanced CASting Technology (PoCAST) is an innovative molten mold flux feeding technology which has been developed to ensure quality of continuously-cast Twinning-Induced Plasticity (TWIP) steel and Ultra-low carbon steels (ULCSs). Stable qualities of ULCS slabs could be achieved by reducing mold flux entrapments by optimizing the range of slag pool depth; this result matches well with entrapment characteristics during 0.6 scale water model tests. Also, uniform solidification at the meniscus with shallower depth of oscillation mark and subsurface hook depth was performed in optimum range of slag pool depth. Thermal plasma melting furnace feeding facility has been developed to control the slag pool depth in the mold by increasing the melting rate. The proposed optimized range of slag pool depth was verified in a commercial trial by realizing thickness control of slag pool depth during ULCS production.

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Title
Slag Pool Depth Effectiveness of Molten Mold Flux Feeding Technology
Authors
Shin Yoo
Jung-Wook Cho
Sang-Hyun Park
Min-Seok Park
Joong-Kil Park
Ki-Hyeon Moon
Publication date
06-07-2020
Publisher
Springer US
Published in
Metallurgical and Materials Transactions B / Issue 5/2020
Print ISSN: 1073-5615
Electronic ISSN: 1543-1916
DOI
https://doi.org/10.1007/s11663-020-01881-1
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