Employed for swaging of most metals, Rotary Swaging utilizes a split die with a desired shape machined into it. The dies are spun and strike rollers, closing the dies. As the workpiece enters the swage dies, it is forged into shape.
Rotary swaging is used to reduce the diameter of tubes and solids or to forge a tube over another tube. Diameters range from .020″ to 1.0″ for tubing. Overall lengths can vary from.25″ to 20′ or more, with a maximum pass length of 3″ in a single pass depending on the material size. The ideal swage angle is 15 degrees included, however, steeper transitions can be considered for production. MicroGroup offers the capability to magazine load certain size ranges of parts to maximize efficiency for volume projects.
Tolerances for swaging vary. Typically, diameter tolerances of ±.005″ can be maintained, but in certain cases, tolerances as tight as ±.001″ can be held. Lengths may vary after swaging and may require an additional step to cut the part back to the desired length. Swaging can also be performed over a mandrel to achieve a more consistent wall thickness and an improved ID finish.