Heat exchanger cooling fin manufacturing method comprises placing sheet metal band on machine with work posts for drilling tube passage holes and folding band edges

摘要

The method of manufacturing heat exchanger cooling fins (6) which have holes for the passage of fluid circulation tubes (4) comprises providing a sheet metal band with a width corresponding to the fin length. This band is placed on a machine comprising several work posts comprising tooling for specific operations on the band. One of the posts carries out the drilling of tube passage holes, another post folds the end edges (8) of the band. The folding of one of the two end edges is made in an end zone containing a tube passage hole. An Independent claim is included for a cooling fin obtained by the method.