What is the main difference between free forging and die forging?

Free forging: The product is simple in shape and can be forged directly on the friction press.

Die forging: the product shape is complex, and the upper and lower die cavities are extruded.

Knowledge expansion:

In the process of free forging, only a part of the metal surface is in contact with the tool or anvil, and the rest is a freely deformable surface. Free forging uses universal dies and tools, which has great flexibility, low cost and short production preparation period, and is suitable for single piece and small batch production. However, the productivity of free forging is low, the labor intensity of workers is high, the precision of forgings is poor, and the machining allowance is large. Therefore, with the progress of production technology, the proportion of free forgings in the total forgings is declining. Free forging is also the main production mode of large forgings, which plays an important role in heavy metallurgical machinery, power machinery, mining machinery, crushing machinery, forging machinery, ships and locomotive manufacturing industries.