Patent ID: 9101975
Filing Date: 2015-08-11
Classification: B22C,B22D

Abstract:
1. A component casting apparatus, comprising: a mold to receive a molten material for casting a component, the mold including a first sacrificial layer to define a housing of the component and a second sacrificial layer to form at least one core passage of the component in response to contact from the molten material, the first and second sacrificial layers defining a metal fusing area between one another to receive the molten material and forms a passage wall of the at least one core passage, the second sacrificial layer being surrounded by the first sacrificial layer and extending along a first direction and having a first diameter to define a hollowed region of the at least one core passage of the component in response to contact from the molten material; and a trusset disposed against an outer surface of the second sacrificial layer without extending through the second sacrificial layer, the trusset formed from metal to support the second sacrificial layer, and including a frame extending in a direction perpendicular to the first direction and disposed between the first and second sacrificial layers, the frame including a first portion in contact with the first sacrificial layer and a second portion in contact with the second sacrificial layer, wherein the second portion includes at least one support surface that extends into the metal fusing area and contacts the second sacrificial layer, and wherein the frame is a single-point frame including a support surface having a single contact area that contacts the second sacrificially layer at only a single point wherein the single-point frame has a vent formed therethrough, the vent extending along a center axis of the single-point frame from the second portion to the first portion to exhaust gas from the second sacrificial layer into the first sacrificial layer.