Title

PRODUCTION OF HIGH QUALITY THICK CONSTRUCTION PLATE FROM INGOTS AND THICK SLABS

PRODUCTION OF HIGH QUALITY THICK CONSTRUCTION PLATE FROM INGOTS AND THICK SLABS

Authorship

Samanta, Sandip; Beaumont, John; Schmidt., Birger

Samanta, Sandip

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Beaumont, John

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Schmidt., Birger

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DOI

10.5151/2594-5297-22534

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Abstract

Today’s market demand for high quality thick plate for the construction industry requires that the plates are rolled from either traditional ingots or thick cast slabs. Both create significant processing problems and yield loss from the final plate. Normally ingots have variations in both the thickness and width down their length which have to be removed during rolling. Traditionally this was done using a mill and a detached edger in a series of reversing passes. With the advent of high speed long stroke hydraulic gap control cylinders allied to powerful physical modelling, new strategies are available to remove the thickness and width variations. Once these variations are eliminated, the ingot can be processed in the same manner as a thick cast slab. In both cases the yield loss due to poor edge shape is evident and requires addressing during the rolling. This paper explores various plate mill control strategies to minimise the poor edge shape and increase the final yield in producing high quality thick plate.

Today’s market demand for high quality thick plate for the construction industry requires that the plates are rolled from either traditional ingots or thick cast slabs. Both create significant processing problems and yield loss from the final plate. Normally ingots have variations in both the thickness and width down their length which have to be removed during rolling. Traditionally this was done using a mill and a detached edger in a series of reversing passes. With the advent of high speed long stroke hydraulic gap control cylinders allied to powerful physical modelling, new strategies are available to remove the thickness and width variations. Once these variations are eliminated, the ingot can be processed in the same manner as a thick cast slab. In both cases the yield loss due to poor edge shape is evident and requires addressing during the rolling. This paper explores various plate mill control strategies to minimise the poor edge shape and increase the final yield in producing high quality thick plate.

Keywords

Ingot rolling; Plate mill; Edger; Rolling process models.

Ingot rolling; Plate mill; Edger; Rolling process models.