Rolls-royce Corporation

John Sylvester Torpey

Max Eric Schlienger

Paul Anthony Withey

Felicity Freeman

George Durrant

A method for designing a baffle including using patterns to produce an array of shell moulds, generating a 3-D image of the outer surface of each shell mould in the array of shell moulds, stacking the individual 3-D images for a plurality of the shell moulds to produce a conglomerate shell mould profile, determining a maximum cross sectional area of the conglomerate shell mould profile in a plane orthogonal to a direction along which the shell moulds are to be drawn through the baffle, defining a baffle profile segment which is consistent with a substantial portion of the conglomerate shell mould profile at the maximum cross sectional area, scaling the baffle profile segment to provide an offset clearance between the baffle profile segment and the maximum cross sectional area of the conglomerate shell mould profile, and reproducing the baffle profile segment to provide an array of baffle profile segments.

Investment casting

An apparatus for bottom pouring into an investment cast includes a container that holds a melted casting material, where the container moves from a first container position to a second container position. In the first container position, holes on a stationary nozzle are not exposed to the interior of the container, and the melted casting material remains in the container. In the second container position, holes on the stationary nozzle are exposed to the interior of the container, and the melted casting material flows out the bottom of the container through the stationary nozzle. A temperature detection device determines the temperature of the melted casting material, and a heating device heats the melted casting material to a specified temperature.

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Ashbourne, United Kingdom

John Sylvester Torpey