Title

INDEFINITE CHILL CAST IRON ROLLS AND FUTURE POSSIBILITIES

INDEFINITE CHILL CAST IRON ROLLS AND FUTURE POSSIBILITIES

Authorship

Brandner, Michael; Nylén, Tommy; Paar, Armin

Brandner, Michael

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Nylén, Tommy

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Paar, Armin

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DOI

10.5151/2594-5297-24042

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Abstract

The roll grade of indefinite chill cast iron has a very long tradition. This grade is used in all types of Hot Strip Mills, Steckel Mills, Plate Mills and even in Cold Mills as Work Roll. In Skin Pass Mills and Temper Mills it can be used as Back Up Roll. From the original indefinite chill iron several modifications (enhanced grades) have been developed and introduced into the market. The standard grade is though still used in quite a number of mills. The enhanced versions of many different roll suppliers are on the other hand the “new” standard grade. Very high alloyed types have been designed and are applied in special mills. The very high alloyed types need very stable rolling conditions. Since the market has changed and the mills have to roll more and more difficult materials it is a question of time when the stability of the mill will be reduced. In this case it is necessary to find a solution for a grade with a high potential of wear resistance and at the same time enough resistance against incidents in the mill. The way of indefinite chill grade development from standard ICDP over the carbide enhanced VIS to the high alloyed VANIS and the new concept of VANIC will be explained

The roll grade of indefinite chill cast iron has a very long tradition. This grade is used in all types of Hot Strip Mills, Steckel Mills, Plate Mills and even in Cold Mills as Work Roll. In Skin Pass Mills and Temper Mills it can be used as Back Up Roll. From the original indefinite chill iron several modifications (enhanced grades) have been developed and introduced into the market. The standard grade is though still used in quite a number of mills. The enhanced versions of many different roll suppliers are on the other hand the “new” standard grade. Very high alloyed types have been designed and are applied in special mills. The very high alloyed types need very stable rolling conditions. Since the market has changed and the mills have to roll more and more difficult materials it is a question of time when the stability of the mill will be reduced. In this case it is necessary to find a solution for a grade with a high potential of wear resistance and at the same time enough resistance against incidents in the mill. The way of indefinite chill grade development from standard ICDP over the carbide enhanced VIS to the high alloyed VANIS and the new concept of VANIC will be explained

Keywords

Work rolls development; Finishing mill; Indefinite chill cast iron.

Work rolls development; Finishing mill; Indefinite chill cast iron.