Patent ID: 9694421
Date: 2017-07-04
CPC Classifications: B22C,B22D,F27D

Claim:
1. A method involving a plurality of metal parts, each metal part being molded from a shell mold for lost-wax casting, the method being carried out in an installation comprising a plurality of preheat electric furnaces and a single pouring furnace distinct from the plurality of preheat electric furnaces, the method comprising: loading a first shell mold in a first preheat electric furnace which has previously been preheated to a first initial loading temperature; starting a first predefined preheating cycle for the first shell mold charged in the first preheat electric furnace; loading a second shell mold in a second preheat electric furnace which has previously been preheated to a second initial loading temperature; starting a second predefined preheating cycle for the second shell mold charged in the second preheat electric furnace; unloading the first shell mold from the first preheat electric furnace; loading the unloaded first shell mold in the single pouring furnace; introducing a molten metal in the first shell mold present in the single pouring furnace; and unloading the first shell mold from the single pouring furnace after pouring the molten metal in the first shell mold, wherein, during said introducing the molten metal in the first shell mold, the second shell mold is kept inside the second preheat electric furnace, the second shell mold being unloaded from the second preheat electric furnace and loaded in the single pouring furnace after the first shell mold is unloaded from the single pouring furnace.