WO2015177384A1 / P163041EP
2014
Aitor Loizaga, Foundry Technologies, Iron foundry, Julián izaga, R&D+i
The riser base is an insert produced by manual moulding or by blowing an insulating or exothermal composition, comprising hollow microspheres of aluminium silicate. The mould mainly consists of silica sand and has a main cavity designed to be filled with molten metal in order to produce a casting and at least one auxiliary cavity. The insert fits into the auxiliary cavity made in the mould and has an inner cavity designed to receive molten metal from a supply riser or mini supply riser, and an external geometry that coincides with the geometry of said auxiliary cavity. The at least one auxiliary cavity made in the mould itself is arranged such that, when the riser base is inserted into said auxiliary cavity, the inner cavity of the riser base communicates with said main cavity of the mould (part) in order to allow the passage of the molten metal.
Julián Izaga; Jaime Prat (ASK Chemicals)
Riser base; optimization of moulds filling; feeding systems; mould geometry.
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