A study of a die set for the multiway die forging of pipe joints

This paper presents a new type of die set for the multiway die forging of pipe joints. The kinematic equation of the wedge working mechanism of the die set and the optimum ratio of the pressing force on the die to the extrusion deforming force are derived. The deforming force is calculated and compared with measured data. The technical and economical efficiency achieved by the die set for producing three-way joints is described.