Patent ID: 7077186
Filing Date: 2006-07-18
Classification: B22D

Abstract:
1. A mould for horizontal casting of molten aluminum comprising a mould body forming an open ended mould cavity having an inlet end and an outlet end, a first annular permeable wall member mounted in the mould body adjacent the inlet end of the mould cavity with an inner face thereof forming an interior face of the mould, a refractory transition plate mounted at the inlet end of the mould cavity, said transition plate providing a mould inlet opening having a cross-section less than that of the mould cavity and thereby providing an annular shoulder at the inlet end of the cavity, feed means for feeding molten aluminum through said inlet opening, and first and second conduits each connected to a gas feed feeding a gas into said mould cavity, said first conduit being positioned closer to the annular shoulder than the second conduit and said feed for said first conduit feeding a gas that is reactive with molten aluminum, whereby the first conduit is adapted to form a metal free pocket at the corner of the shoulder and cavity wall and the second conduit is adapted to feed gas through said permeable wall means to contact the metal adjacent the interior face of the mould.