Rota

Question

Rotary swaging

Options:

A . is extensively used for making bolts and rivets

B . is used for reducing the diameters of round bars and tubes by rotating dies which open and close rapidly on the work

C . is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface

D . consists 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

Answer: Option B

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