Closed die forging

Closed die forging can be used, as indicated, to produce 3D solid shapes without re-entrant angles from any material that is ductile at the forging temperature.

Based on the traditional art of closed die forging carried out by blacksmiths in times gone by,closed die forging has evolved into a modern metal working process that has been somewhat automated through the adoption of power driven presses and pre-machined dies.

The machines and dies required for the closed die forging process can be costly dependent on complexity and the closed die forging process tends to rely on the skill of the operators to produce satisfactory quality levels. This is because closed die forging are often general purpose where closed die are dedicated to specific component shapes.Besides,it is also important to know how to select die material for closed die forging.

The quality of the components produced are also affected by the forging temperature with surface texture and dimensional accuracy deteriorating with increased temperatures.Closed forging nearly always results in a flash that has to be removed with secondary machining operations whereas cold forging can be produced near shape.Closed die forging are widely used in automotive application.