FORGING

Impression Die Forging

Impression die forging, also known as closed die forging, because each die set behaves a little like a pair of casting molds. This process uses a hammer along with the manufacturing dies, which are typically connected to an anvil. When the hammer is dropped on the workpiece, the hot, or cold sometimes, metal flows and occupies the die’s cavities. Depending on the component’s design, forging may require one set of dies or a multistage process with many sets of dies.

Open Die Forging

Open die forging is also known smith forging. In open die forging process, a hammer strikes and deforms the workpiece, which is placed on a stationary anvil. Open die forging gets its name from the fact that the dies (the surfaces that are in contact with the workpiece) do not enclose the workpiece, allowing it to flow except where contacted by the dies. Therefore, the operator needs to orient and position the workpiece to get the desired shape. The dies are usually flat in shape, but some have a specially shaped surface for specialized operations.