What is the term for the process of expanding tubes into a tube sheet?

The process of expanding tubes into a tube sheet is commonly referred to as rolling. This technique involves using a specialized tool to press the ends of the tubes against the tube sheet, creating a secure and tight fit. This is essential for maintaining the integrity of heat exchangers and condensers, as it prevents leakage of fluids between the tubes and the shell.

Rolling helps ensure that the tubes are properly seated and able to withstand the pressures usually encountered in refrigeration systems. The mechanical grip formed during the rolling process is crucial in sustaining the operational efficiency and safety of the equipment.

The other processes mentioned do not pertain to expanding tubes into a tube sheet. Beading refers to creating a bead shape on the tubing, often for decorative or functional purposes in certain applications. Flaring is the process of widening the end of a tube to allow for connections, while peening involves deforming the metal surface to change its mechanical properties, rather than securing it to a tube sheet. Each of these methods serves distinct purposes unrelated to the insertion of tubes into a tube sheet.