Brief description of embodiments, by moulding a mechanical piece having complex shapes and evolutive, in particular of a cylinder head of a vehicle

摘要

The process for producing an aluminum mechanical component such as a cylinder head of a motor vehicle having complex shapes and tapering (10) by casting, comprises defining a cut by layers (S1, S2, S3, S4, S5) for shaping a mechanical component (1) to define stress and corresponding stress release from the function of the component, producing an unitary model identical to a part of the component to be produced, and restoring the shape of the component to be produced in its entirety by overlaying and assembling the different unitary models by bonding to obtain a complete model. The process for producing an aluminum mechanical component such as a cylinder head of a motor vehicle having complex shapes and tapering (10) by casting, comprises defining a cut by layers (S1, S2, S3, S4, S5) for shaping a mechanical component (1) to define stress and corresponding stress release from the function of the component, producing an unitary model identical to a part of the component to be produced, restoring the shape of the component to be produced in its entirety by overlaying and assembling the different unitary models by bonding to obtain a complete model identical to the component to be produced, and casting the component. A material of the unitary model produces molds by lost mold process. The complex shapes and tapering are inner conduits having tapering sections. The mold process comprises placing the complete model in a tub, pouring dried sand in an inner space of the tub, compacting the sand by vibrations, and processing a part of a casting material to be produced to obtain a mechanical component identical to the complete model. An independent claim is included for a cylinder head of a motor vehicle.