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Continuous Casting
ArticleName New vertical techniques for continuous casting
ArticleAuthor P. Pennerstorfer, H. Thöne, F. Wimmer
ArticleAuthorData

Siemens VAI Metals Technologies GmbH (Linz, Austria):

Pennerstorfer P., Mag. Eng., Head of Technology Continuous Casting
Thöne H., Mag. Eng.
Wimmer F., Mag. Eng., Product Development & Simulation, e-mail: wimmer.franz@siemens.com

Abstract

Casting technology originally began with vertical machines and took a big portion of ingot steel production achieving conside rable cost savings. By improving the new continuous casting technique, the bow-type caster emerged and became more and more important due to further savings. But in terms of very special steel grades and highest quality demands, the ingot and the vertical continuous cas ting route are still the preferred solutions. Their outstanding features include the prevention of bending and straightening forces, optimal cleanness, and symmetry and homogeneity of the produced slabs or blooms. In addition to continuous improvements and upgrading with modern technological packages, this paper presents some examples. Principal scheme of a vertical continuous caster allows to cast practically all steel grades, especially those that are characterized by instabi lity at the bow-type casting machines. The only one restriction is concluded in presence of suitable slag-forming mix, because its absence requires lowering of liquidus temperature during casting or varying of special physical parameters or chemical composition of cast special steels. Such undesirable restrictions for special steels are connected with technological flexibility of the continuous casters. Updated enginee ring methods use the most recent technological tools (such as physical-mathematical simulation) and are capable to provide the new level of productivity on the base of such continuous casting machine.

keywords Continuous casting, vertical machines, bow-type machines, special steels, liquidus temperature, slag-forming mix, simulation, flexibility
References

1. Dutzler, W. et. al.: Planning, design and start-up of the two-strand vertical bloom caster at Thyssen Stahl AG Edelstahlwerk in Witten, 6th Intern. Continuous Casting Conference (ECCC ’93), 24.–26. Mai 1993, Linz, Österreich.
2. Münnich, B.; Wagner, P.: Modernization of the Slab Casters CC3 and CC4 at Dillinger Hüttenwerke/Germany, Proc. Continuous Casting and Hot-Rolling Conference (CCR ’04), 14.–15. Juni 2014, Linz, Österreich, Beitrag 8.4, S. 1/7.
3. Gould, L.: Start-up of a vertical slab caster at Baosteel, China, Metals & Mining (2009) Nr. 2, S. 54/55.
4. Hrazdera, G. et. al.: Advanced continuous casting technology boosts productivity and product quality of Asian steel producers, Proc. SEAISI 2010, 17.–20. Mai 2010, Ho Chi Minh City, Vietnam.

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