Aviation Dictionary
پرس سرد ،شکل دهی فلزات در دمای معمولی به کمک فشار
Rotary swaging process is usually a cold working process, used to reduce the diameter, produce a taper, or add a point to a round workpiece. It can also impart internal shapes in hollow workpieces through the use of a mandrel (the shape must have a constant cross-section).