Metal fabricating and welding glossary - R

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Resistance Spot Welding (RSW)

Melting and joining action of two adjoining metal surfaces created by the thermal reaction of the metal to the flow of an electrical current forming a weld nugget.

Robotic welding

There are two popular types of industrial welding robots. The two are articulating robots and rectilinear robots. Robotics control the movement of a rotating wrist operating in space which repeatedly and precisely applies the welding to specific pre-determined points.

Roll form

A metal shape that has been processed using roll forming.

Roll formed

Definition goes here.

Roll formed shape, hollow

A roll formed shape which is closed by mechanically fastening or a welding the two strip edges together.

Roll formed shape, open

A roll formed shape with a linear or curved contour in which the two ends of the shape are not brought together.

Roll forming

A continuous bending operation in the metal forming process, which sheet or strip metal is plastically deformed along a linear axis by being passed through a series of roller dies and progressively shaped to the desired contour.

Photo of roll forming process.

Roll stations

Tandem sets of rolls used in roll forming to shape the metal stock in a series of progressive stages to form the desired cross-sectional configuration.

Rough blank

A blank for a forming or drawing operation, usually of irregular outline, with necessary stock allowance for process metal, which is trimmed after forming or drawing to the desired size.

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