Thin-wall conical barrel shape correcting device

The invention discloses a thin-wall conical barrel shape correcting device which comprises a heating furnace for heating, a graphite mould, a pressure plate and a telescopic device, a graphite mould correspondingly matched with an inner hole of a standard thin-wall conical barrel workpiece is arranged in the heating furnace, a pressing disc with the diameter larger than that of the thin-wall conical barrel workpiece is arranged above the graphite mould, and a telescopic device used for pushing the pressing disc is arranged at the top in the heating furnace. The top of the cylinder body is correspondingly fastened and connected with the top in the heating furnace, an inner cavity of the cylinder body is in sliding fit with a mandrel with the bottom extending out of the cylinder body, a sealing ring is arranged between a mandrel body and the inner cavity of the cylinder body, and the top of the cylinder body is communicated with a water injection pipeline extending out of the heating furnace; the device is simp