Numerically controlled press. See CNC Turret Press.
NC
Numerically controlled.
Nesting
1 Grouping of identical or different parts in multiples within a workpiece to conserve material. 2 In packaging, stacking of parts whose shape permits one to fit inside another.
Nibble Marks
Slight irregularities at the edge of the stock surface after progressive punching nibbling operations in a turret press.
Nitriding
The process of adding nitrogen to the surface of a steel, usually from dissociated ammonia as the source. Nitriding develops a very hard case after a long time at comparatively low temperature, without quenching.
Nominal
The targeted value for a dimension that defines the size of an ideal part.
Non-Ferrous Metal
Elements and their alloys without iron as a major constituent.
Non-Geometrical
Information not related to the shape of the product. i.e. part number, notes, material lists, tolerances, etc.
Non-uniform Coverage
Inconsistent paint thickness.
Normalizing
The process of heating steel to a temperature above its transformation range, followed by air cooling. The purpose of normalizing may be to refine grain structure prior to hardening the steel, to harden the steel slightly, or to reduce segregation.
Notching
Operation in which the punch removes material from the edge or corner of a strip or blank.
