Apparatus for manufacturing articles made of aluminum, aluminum alloys, light alloys and the like, and method performed by the apparatus
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Accused Products
Abstract
An apparatus and method for manufacturing articles made of aluminum, aluminum alloys, light alloys and the like, the apparatus comprising a lower die section (12) and at least one upper die section (13), associated with corresponding press platens (14,15) for closure determining shape of the cast article, a vertically elongated duct (16) for introducing liquid metal, a pressurized furnace that leads into the lower die section (13) that forms at least one lower impression (17) with at least one concave portion for introducing liquid metal through at least one corresponding inlet (18) formed at the upper portion of the duct (16), a male plug (19) associated with the upper die section (12), and movable with respect thereto.
3 Citations
20 Claims
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1-10. -10. (canceled)
- 11. An apparatus for manufacturing articles made of aluminum, aluminum alloys, light alloys and the like, comprising a lower die section and at least one upper die section, which are associated with corresponding press platens for their closure so as to determine the shape of the article to be cast, a vertically elongated duct for introducing liquid metal that arrives from an underlying pressurized furnace leading into said lower die section, characterized in that said lower die section forms at least one lower impression that has at least one concave portion for introducing liquid metal through at least one corresponding inlet formed at the upper portion of said duct that rises from said lower die section, a male plug being associated with said upper die section, said male plug being movable with respect to said upper die section and forming an upper impression portion, said at least one upper die section being closable onto said lower die section, determining the shape of the article to be cast, and said male plug acting as a flow control element for said at least one inlet, whose overflow level determines the chosen quantity of liquid metal that is present inside said shape.
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15. A method for manufacturing articles made of aluminum, aluminum alloys, light alloys and the like, comprising the steps of:
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closing said die sections while the male plug is arranged at a higher level than the overflow level of said inlets, introducing liquid metal into the shape formed by said die sections, through said inlets, until it is filled completely, lowering said male plug to the overflow level of said inlets until they are closed, causing a clean separation between the liquid metal that is present within said duct and the metal that is present within said shape, waiting for the casting to solidify, opening said die sections and removing the cast article. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification