Abstract: A process for manufacturing parts made of aluminum cast or aluminum alloy cast in a mold, which includes after casting, removing from the mold the part which constitutes the cast preform while still hot, and placing it between two halves of a die that defines a cavity having dimensions that are slightly less than those of the mold, forcing said two halves together in order to exert a combined in-depth impact forging and surface hardening effect on the casting placed between the two halves. The invention further includes the step of transferring the cast preform prior to the impact forging step at a temperature of about 400 to 500° C. to a furnace that ensures solution heat treatment for the aluminum alloy at its homogenization temperature.

Abstract: A process for manufacturing parts made of aluminum cast or aluminum alloy cast in a mold, which includes after casting, removing from the mold the part which constitutes the cast preform while still hot, and placing it between two halves of a die that defines a cavity having dimensions that are slightly less than those of the mold, forcing said two halves together in order to exert a combined in-depth impact forging and surface hardening effect on the casting placed between the two halves. The invention further includes the step of transferring the cast preform prior to the impact forging step at a temperature of about 400 to 500° C. to a furnace that ensures solution heat treatment for the aluminum alloy at its homogenization temperature.