Tube beading is a

metal forming Forming, metal forming, is the metalworking process of fashioning metal parts and objects through mechanical deformation; the workpiece is reshaped without adding or removing material, and its mass remains unchanged. Forming operates on the mater ...

process that forms a bead on the end of a tube. Tube beads can be used to help hold a

hose A hose is a flexible hollow tube designed to carry fluids from one location to another. Hoses are also sometimes called '' pipes'' (the word ''pipe'' usually refers to a rigid tube, whereas a hose is usually a flexible one), or more generally ...

on the end of a tube or to strengthen the end of the tube.Gregory Miller, "Tube Forming Processes: A Comprehensive Guide," 2002

There are two forming processes: ''internal roll forming'' and ''ram forming''.

Internal roll forming

Internal roll forming is generally slower than ram forming but it holds tight tolerances. Serrated clamp jaws are used to hold the tube while radial pressure is applied by an internal roller to form the bead.

Ram forming

Ram forming is quicker and usually preferred when speed of production is a concern. The

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usually uses this process over internal roll-forming. A clamp is used to hold the tube, the tube is expanded to desired diameter by an expansion

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, and then another punch is used to reduce the tube back to pilot diameter. Multiple beads are possible using this process.

References

Metal forming {{metalworking-stub