MOULD FOR CASTING AT LOW PRESSURE

摘要

Mould for casting at low pressure, of the type defining a moulding cavity whose walls consist of agglomerated sand and which is connected by an inlet of small section to a vertical supply pipe closed at its upper end, characterised in that the walls of the moulding cavity are constituted by a layer of sand adhering to an outer metal shell. Costs are reduced and the production rate is increased in that less said and binding agent are required and the cooling is much more rapid.