Closed Die Forging is a forging process in which dies move towards each other and covers the workpiece in whole or in part. ... The shape of the forging is incorporated in the top or bottom die as a negative image. Coming from above, the impact of the top die on the raw material forms it into the required forged form.
Impression Die Forging. Similar to the open die forging method, impression die forging—also known as closed die forging—uses dies to shape material into the desired parts and products. ... Cold Forging. ... Seamless Rolled Ring Forging.