Patent ID: 8302447

Claim:
Device for forging sleeve-shaped parts from a pre-forged preform to a finished forged part by means of a single forging step, comprising: an upper form mandrel, having a cavity with a frusto-conical shape that tapers from a bottom of the cavity to an open end, an external form ring, a lower form mandrel, an ejecting device including a lower ejector for the ejection through the lower form mandrel, and an upper ejector for the ejection through the upper form mandrel, and a clamping base that supports the lower form mandrel, and is adapted for actuating the lower ejector, wherein, during the forging process, the upper and lower form mandrels are adapted to enter the form ring with the preform inside to forge the preform and wherein the upper and lower form mandrels are adapted to activate the upper and lower ejectors to eject the forged part, and wherein the lower form mandrel includes cooling medium channels.