what is the difference between open die forging and closed die forging?

Question

Accepted Answer

Open die forging and closed die forging differ in the amount of material constraint and the complexity of the final product.

Open die forging involves shaping the metal between two flat dies with no pre-determined shape, resulting in a product with less constraint and more flexibility.
Closed die forging involves shaping the metal within a pre-determined shape, using multiple dies to create a more complex final product with greater precision.
Open die forging is typically used for larger products such as shafts, while closed die forging is used for smaller, more intricate products such as gears.
Closed die forging requires more preparation and tooling, making it more expensive than open die forging.

Top Kems Forging Summer Intern interview questions & answers