Page 45 - Curriculum Visions Dynamic Book

 Molten aluminium is siphoned from the electrolytic cells (left) into a holding furnace where it is kept at 690 to 745°C for two to three hours. Other elements can then be added to create
the desired alloys. The resultant molten metal is then poured into moulds of the desired ingot shape (below), from which aluminium products are manufactured. Careful control of the cooling
of the aluminium produces
a good internal structure to
the metal casts (bottom left).
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