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Rolling Mill

The method of production developed in the last number of years for production of high quality sheet and foil products is by continuous casting. This process bypassesthe ingot stage and directly converts the molten aluminium into thick strip whichis then immediately rolled into coil from which foil can be produced.
Plate that is slated to become sheet or foil is trimmed after leaving the breakdown mill and sent through a continuous mill to reduce thickness further. Sheet thicknesses
are then coiled.

To continue its reducing process, the coiled sheet is heated in a furnace to soften it for cold rolling. Cold rolling is the last step for some sheet. But other types, knownas heat-treatable, are subjected to further elevated-temperature processing to increase their strength.

To obtain foil in final thickness below 0.040mm two layers from the coils are rolled simultaneously. The rolling of the doubled foil results in one of the rolled surfaces on the outside of the doubled coil being bright and the inside being matt or mill finish.

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