Systems, devices, and/or methods for manufacturing castings

摘要

Certain exemplary embodiments can provide a composition, system, machine, device, manufacture, circuit, and/or user interface adapted for, and/or a method and/or machine-readable medium comprising machine-implementable instructions for, activities that can comprise, after removing a cast device from a stack-lamination-derived mold, said cast device formed from a molding composition, applying a desired shape to said cast device to form a shaped cast device, said molding composition comprising: a ceramic composition comprising silica; an cycloaliphatic epoxy binder composition, said cycloaliphatic epoxy binder composition present in said molding composition in an amount up to 30% by weight of said molding composition; a silicone composition comprising a siloxane resin, said silicone composition present in said molding composition in an amount up to 30% by weight of said molding composition; and a solvent composition adapted to dissolve said cycloaliphatic epoxy binder composition and said silicone composition.

主权项

1. A method comprising:
after removing a cast device from a stack-lamination-derived mold, said cast device formed from a molding composition, applying a desired shape to said cast device to form a shaped cast device, said molding composition comprising:
a ceramic composition comprising a plurality of crystalline forms of silica, a first crystalline form of silica from the plurality of crystalline forms of silica being cristobalite in an amount greater than 2.5% and less than 10% by weight of the molding composition;an cycloaliphatic epoxy binder composition, said cycloaliphatic epoxy binder composition present in said molding composition in an amount up to 30% by weight of said molding composition;a silicone composition comprising a siloxane resin, said silicone composition present in said molding composition in an amount up to 30% by weight of said molding composition; anda solvent composition adapted to dissolve said cycloaliphatic epoxy binder composition and said silicone compositionwherein:
said molding composition, responsive to being cross-linked at a predetermined cross-link temperature, is configured to allow said shaped cast device to be substantially re-shaped upon exposing said shaped cast device to a temperature above said predetermined cross-link temperature; andsaid shaped cast device is configured to be substantially carbon-free after sintering; andsaid shaped cast device having a post-sintering measured apparent porosity of 15 to 35 percent and a predetermined surface characteristic.