Process for manufacturing shaped bodies from hypereutectic aluminium-silicon alloys, starting from powders obtained by rapid cooling

摘要

The process is characterised by a spraying operation comprising cooling by a forced contact solid particle or gas particle at high pressure, an operation of recovery of the powders without the precompression and an operation of extrusion in a die in which only the tool is heated. The process applies to the manufacture of motor vehicle components such as pistons, liners, connecting rods, gudgeon-pins, and the like.