Workshop Technology
In order to get uniform thickness of the plate by rolling process, one provides

Hardening of the rolls
Camber on the rolls
Antifriction bearings
Offset on the rolls

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Workshop Technology
Notching is the operation of

Cutting a sheet of metal in a straight line along the length
Bending a sheet of metal along a curved axis
Removal of metal to the desired shape from the edge of a plate
Cutting a sheet of metal through part of its length and then bending the cut portion

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