Method and device for uphill casting, involving a casting mould comprising a pouring gate lying underneath and a sliding closure

摘要

The invention relates to a method and a device for uphill casting/low-pressure casting especially of light metal alloys said device comprising a casting furnace (81) lying below a casting plate (51) and comprising an ascending pipe (83), said pipe comprising an orifice (99); and a casting mould having a pouring gate (79) lying underneath and a sliding closure (11). The sliding closure (11) comprises two immediately adjacent opening segments pertaining to the through channel which are displaced towards each other transversally in relation to the longitudinal course of the through channel (17), immediately after the casting when the molten metal is still in a liquid state in the pouring gate (79), in such a way that one upper opening segment remains openly connected, without a back draft, to the pouring gate (79), and a lower opening segment remains openly connected to the orifice (99) of the ascending pipe. Said opening segments are completely offset in relation to each other. The level of molten metal in the ascending pipe (83) is then lowered below the orifice (99) of the ascending pipe (83) and the lower opening segment of the through channel (17) is thereby emptied of the molten metal.