Continuous Casting of Thin Aluminum Strips Using the Electromagnetic Levitation

This article provides a short history and presents the state of the art of continuous casting and rolling of aluminum and its alloys, currently used for the production of Al alloy sheets for different applications. Some fundamental aspects related to this technology are integrated with experimental results obtained by the authors during the years spent studying the development of grain structure and the effect of homogenization treatment and rolling on the microstructural evolution of Al sheets.

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Using Electromagnetic Levitation for Continuous Casting of Thin Aluminium Alloys Strip

ISIJ International ◽

10.2355/isijinternational.isijint-2014-843 ◽

2015 ◽

Vol 55 (8) ◽

pp. 1669-1676 ◽

Cited By ~ 2

Author(s):

Marcela Pokusová ◽

Marián Murgaš

Keyword(s):

Continuous Casting ◽

Aluminium Alloys ◽

Electromagnetic Levitation

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Ultra low aluminium DWI grade development of an atypical continuous casting powder with high viscosity

Revue de Métallurgie ◽

10.1051/metal/2009040 ◽

2009 ◽

Vol 106 (6) ◽

pp. 242-247

Author(s):

C. Damerval ◽

H. Tavernier ◽

L. Avedian ◽

P. Disant ◽

P. Delfosse ◽

...

Keyword(s):

Continuous Casting ◽

High Viscosity

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Influence of technology parameters of free-cutting steel continuous casting on the billet internal structure

Ferrous Metallurgy Bulletin of Scientific Technical and Economic Information ◽

10.32339/0135-5910-2020-2-139-142 ◽

2020 ◽

Vol 76 (2) ◽

pp. 139-142

Author(s):

A. T. Kunakbaeva ◽

A. M. Stolyarov ◽

M. V. Potapova

Keyword(s):

Regression Analysis ◽

Continuous Casting ◽

Internal Structure ◽

Sulfur Content ◽

Manganese Content ◽

High Quality ◽

Correlation And Regression Analysis ◽

Cutting Steel ◽

Continuously Cast

Free-cutting steel gains specific working properties thanks to the high content of sulfur and phosphorus. These elements, especially sulfur, have a rather high tendency to segregation. Therefore, segregation defects in free-cutting steel continuously cast billets can be significantly developed. The aim of the work was to study the influence of the chemical composition of freecutting steel and casting technological parameters on the quality of the macrostructure of continuously cast billets. A metallographic assessment of the internal structure of cast metal made of free-cutting steel and data processing by application of correlation and regression analysis were the research methods. The array of production data of 43 heats of free-cutting steel of grade A12 was studied. Steel casting on a five-strand radial type continuous casting machine was carried out by various methods of metal pouring from tundish into the molds. Metal of 19 heats was poured with an open stream, and 24 heats – by a closed stream through submerged nozzles with a vertical hole. High-quality billets had a cross-sectional size of 150×150 mm. The macrostructure of high-quality square billets made of free-cutting steel of A12 grade is characterized by the presence of central porosity, axial segregation and peripheral point contamination, the degree of development of which was in the range from 1.5 to 2.0 points, segregation cracks and strips – about 1.0 points. In the course of casting with an open stream, almost all of these defects are more developed comparing with the casting by a closed stream. As a result of correlation and regression analysis, linear dependences of the development degree of segregation cracks and strips both axial and angular on the sulfur content in steel and on the ratio of manganese content to sulfur content were established. The degree of these defects development increases with growing of sulfur content in steel of A12 grade. These defects had especially strong development when sulfur content in steel was of more than 0.10%. To improve the quality of cast metal, it is necessary to have the ratio of the manganese content to the sulfur content in the metal more than eight.

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