An Upper Bound Solution for Closed Die Sinter Forging of Hexagonal Shapes at High Speed

The paper reports on an investigation into the various aspects of closed die forging of hexagonal powder preforms, which have been compacted and sintered from atomized powder. It is found that for certain dimensional ratios of the preform the die pressure is minimum. An attempt has been made for the determination of the die pressures developed during the closed die forging of hexagonal powder preform at high speed by using an upper bound approach. The results so obtained are discussed critically to illustrate the interaction of various process parameters involved and are presented graphically.