Coining
is the operation of ________ .
cold
forging
hot
forging
cold extrusion
piercing
cold
forging
Coining
:Coining is a closed die forging process, in which pressure is applied on the
surface of the forging in order to obtain closer tolerances, smoother surfaces
and eliminate draft. Closed die forging is a process in which forging is done
by placing the work piece between two shaped dies. This process done in cold
working.
Hence, the correct option is (A).
&Key Points:-
Coining can be done using a gear driven press, a mechanical press or more commonly, a hydraulically actuated press.
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