Rotary swaging

• A. s extensively used for making bolts and rivets
• B. s used for reducing the diameters of round bars and a tube by rotating dies which open and close rapidly on the work
• C. s used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
• D. onsists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part