Importance

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Abstract

In a filling-tube construction (1, 2) for providing a connection between a mould (6) to be filled with molten metal and a mould-filling furnace (3) containing molten metal (5), said mould (6) having at least one casting cavity (7), the lowermost part of each such cavity communicating with a filling duct (8), at least one end of which is open to the outside of said mould (6) and adapted to be temporarily connected to the filling-tube construction (1, 2) to receive molten metal (5) from the mould-filling furnace (3), the mould-filling furnace being adapted to contain molten metal (5) and to transfer said molten metal (5) under a controlled pressure through the filling-tube construction (1, 2) and to the filling duct (8), the filling-tube construction comprises a first section (1) extending from a position close to the bottom of said mould-filling furnace (3) up to an intermediate position closer to the filling duct (8) and at least one separate second section (2) providing a connection from the upper end of the first section (1) to the open end of the filling duct (8) and adapted to provide a fluid-tight connection to the upper end of the first section (1) and the open end of the filling duct (8). In this way an easy adjustment and/or exchange of parts of the filling-tube constructions can be provided by simply adjusting and/or exchanging the second section (2), without disassembly of the connection between the first section (1) and the mould-filling furnace (3). The invention also includes a method of modifying a conventional constructed filling tube to a filling tube as described above.

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First Claim