Manufacturing an exhaust line of a motor vehicle, comprises supplying first and second tubes, fitting first end with the second end, soldering first and second ends, and forming elastically deformable relief on first and/or second end

摘要

The process comprises supplying a first tube (3) having a first end (7) with a first section, supplying a second tube (5) having a second end (9) having a second section larger than the first section, fitting the first end with the second end by leaving a gap between the first and second ends, soldering the first and second ends one on the other, and forming elastically deformable relief (11) on the first and/or second end. The relief is distributed around the end, which protrudes into a gap so that the gap between the first and second ends has a non-zero thickness. The process comprises supplying a first tube (3) having a first end (7) with a first section, supplying a second tube (5) having a second end (9) having a second section larger than the first section, fitting the first end with the second end by leaving a gap between the first and second ends, soldering the first and second ends one on the other, and forming elastically deformable relief (11) on the first and/or second end. The relief is distributed around the end, which protrudes into a gap so that the gap between the first and second ends has a non-zero thickness. The first and second ends are circular. The first end has a first fabrication tolerance for its outer diameter and the second end has a second fabrication tolerance for the inner diameter. The relief has heights, which are expressed as half the value of sum of first fabrication tolerance, second fabrication tolerance and fitting clearance, where the fitting clearance is 0.05-0.5 mm. The first end has a thickness of material of less than 2 mm, and is externally bounded by an external surface. The second end is bounded inwards by an inner surface. The relief is protruded with respect to the inner surface or to the outer surface. The gap is defined between internal and external surfaces. Each relief comprises an area of the first or second end deformed with respect to a second peripheral area extending around the deformed area. The first or second end presents incisions defining flexible tongues. Each relief includes one of the tabs and a region projecting into the intersection formed on the tongue, and is obtained cutting each leg including a U section of the first or second end. An independent claim is included for an exhaust line.