Explain closed die forging with neat sketch
Impression die & Closed die forging process: Closed Die forging is also known as impression die forging. Close die forging process consist of specially prepared dies to manufacturing forged parts in large quantities. The work piece is placed between cavities of dies as shown in fig. which takes the shape of the die cavities (impression) during forging process. Some materials come outwards and form a flash. Generally this process is used for mass production with high degree of accuracy. Complex shaped parts can be easily forged by this forging process.