Non-linear composite tube and method of manufacture

Details Non-linear composite tube and method of manufacture Non-linear composite tube and method of manufacture

F - Mech Eng,Light,Heat,Weapons

16

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F16L 9/22 (2006.01) F01N 13/08 (2010.01) F01N 13/16 (2010.01) B21C 37/00 (2006.01) B21C 37/16 (2006.01) F01N 13/18 (2010.01) F01N 7/08 (2006.01) F01N 7/16 (2006.01) F01N 7/18 (2006.01)

Patent

CA 2150760

A composite tube and method of manufacture are provided. The composite tube is formed from a plurality of tube segments which are different from one another. The tube segments may differ in cross-sectional dimensions and/or material of manufacture. The tube segments are welded in end- to-end relationship to define a composite tube. The composite tube is then bent into a selected non-linear shape. Preferably, the welds are disposed at locations on tangents between adjacent bends. Bending forces and bending speed are altered from one bend to the next in view of anticipated strength and metallurgical characteristics of the particular tube segment in which the bend is being carried out.

Tube composite et méthode de fabrication. Le tube composite est formé d'une pluralité de segments de tube différents les uns des autres. Les segments de tube peuvent être de section plus grande ou plus petite ou être faits de matériaux différents. Les segments de tube sont soudés bout à bout de manière à définir un tube composite. Le tube composite est ensuite coudé suivant une forme non linéaire choisie. De préférence, les soudures sont placées en des points de tangence entre des coudes adjacents. La force et la vitesse de coudage sont variées d'un coude au suivant pour tenir compte de la résistance anticipée et des caractéristiques métallurgiques du segment de tube particulier dans lequel on fait le coude.

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