What are the key considerations in forging die design?

Key forging die design considerations include: Parting line location (affects grain flow and die cost), Draft angles (typically 3-7 degrees for easy ejection), Fillet radii (prevent stress concentrations and improve material flow), Flash design (controls excess material flow), Die material selection (H13 tool steel common for hot forging), Preform design (multi-stage forging), and Grain flow optimization (align with stress directions). Simulation tools like DEFORM help optimize die design before expensive tooling fabrication.