PROCEDURE FOR MANUFACTURE OF A TUBE FOR CONVEYANCE OF A FLUID OF A HEAT EXCHANGER, AND TUBE OBTAINED BY SUCH PROCEDURE

摘要

The present invention concerns a procedure for manufacture of a tube for conveyance of a fluid of a heat exchanger, such tube being of the type presenting a substantially rectangular cross-section, formed by two opposed walls of greater width and two rounded walls of lesser width, said procedure consists of realising the following stages: a) Commencing from a metal sheet (2) , realisation of a plurality of corrugations (3) by employing an embossing process; b) Realisation of the bending of sheet (2) by employing a process of embossing or forming; and c) Proceeding to weld the free edges (4) to close tube, considering the tolerances required.