Patent ID: 6494254
Filing Date: 2002-12-17
Classification: B21C,B23K,F28D,F28F,Y10T

Abstract:
Tube for a heat exchanger, consisting of a metal strip having an outer face and an inner face (34), the outer face being covered with a plating of brazing alloy (31), the metal strip (40) being folded by passing through a series of successive rollers (44, 46, 54, 56, 64, 66) and including at least one folded border (28) having a sheared edge (32) bearing on an inner face (34) of the metal strip (40), characterized in that the sheared edge (32) is a mechanically deformed edge covered with a layer of brazing alloy (33), said layer of brazing alloy (33) having been pushed back mechanically during deformation of said deformed edge from the outer face towards the sheared edge (32).