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bulk deformation (forging (the work compressed between two die (impart…
bulk deformation
forging
the work compressed between two die
impart pressure
gradual pressure
hot or cold working
the need to reduce strength and increase ductility of the work metal
Extrusion
indirect extrusion
solid part
hollow part
Direct extrusion
solid part
hollow part
Thread rolling
advantage
Stronger thread due to work hardening
Smoother surface
better material utilization
better fatigue resistance due to compressive stresses introduced by rolling
drawing
pulling it through a die opening