| 摘要 |
Device in connection with a water-cooling system for direct chill semi- continuous casting equipment for casting metal, in particular casting aluminium ingots (14). Th e solution comprises one or more chills (9) arranged in a frame structure with an integral water distribution box (18). The chill(s) comprise(s) a mould chamber surrounded b y permeable wall elements (10) for the supply of oil and/or gas and is(are) op en at the top with an opening (13) for the supply of molten metal and, at the start of eac h casting operation, is(are) closed at the bottom by means of a mobile support. The metal is cooled in two stages, by primary cooling in the mould chamber and secondary cooling by direct water cooling immediately below the primary cooling area. A separa te cooling circuit called the recooling circuit is arranged to cool the chills after th e end of the casting cycle. The recooling (1, 2, 3) and secondary cooling (11, 19) thus consist o f two separate cooling circuits. The recooling circuit comprises one or more cooli ng ducts (3) in the chill wall with supply and outflow pipe systems (1 and 2). The secondary cooling circuit comprises a water distribution chamber (11) which is connected to al l the chills (9) of the equipment and which distributes water to drilled holes or a water distribution slit (19) around the circumference of the chill.
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