Casting method and apparatus
AssigneeWuxi Cummins Turbo Technologies Company Ltd.
InventorsTongjun GAO, Kaifeng WU
Life of this patent
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Abstract
A mould element (such as mould core) for casting metal is made by a process that starts with a coated mould element having a coating (such as a core coating). The coated mould element is provided with a further coating and a bond coating on the further coating, the bond coating allowing the further coating to attach to a metal casting made with the mould element, such as a cast housing for a turbomachine.
Claims18
A process of forming a mould for casting metal, the process including:
- a) providing a coated mould element;
- b) providing a further coating on the coated central mould element;
- and
- c) providing a bond coating on the further coating.
A method of casting a housing for a turbomachine having an internal coating, the method including:
- a) providing a multi-layered core having a central core, a core coating, a further coating, and a bond coating in said order;
- b) providing a casting mould including the multi-layered core, said casting mould and multi-layered core defining a cavity;
- c) introducing molten metal into the cavity;
- and
- d) allowing the molten metal to solidify in the cavity to form a housing casting intermediary.
A mould element for use in casting metal, the mould element including:
- a) a central mould element
- b) a mould element coating on the central mould element
- c) a further coating on the mould element coating;
- and
- d) a bond coating on the further coating.
A housing for a turbomachine, the housing including an internal volute surface, wherein the internal volute surface includes a barrier coating bonded to the internal volute surface of the housing via a bond coating.
Dependencies are inferred from the claim text.