Treating pressure vessels

Details Treating pressure vessels Treating pressure vessels

B - Operations, Transporting

21

D

B21D 51/24 (2006.01)

Patent

CA 2201313

A pressure vessel has a cylindrical side wall and a closed end joined to the side wall at a knuckle. The fatigue resistance of the pressure vessel is improved by autofrettage which moves a region of peak stress from the internal surface of the vessel to a region within the knuckle. Preferred are pressurised gas vessels of 6000 or 7000 series aluminium alloys.

Un réservoir sous pression possède une paroi latérale cylindrique et une extrémité fermée réunie à ladite paroi latérale au niveau d'une articulation. On améliore la durée de vie du réservoir sous pression par autofrettage, ce qui déplace une région de contrainte maximum depuis la surface intérieure du réservoir vers une région située à l'intérieur de l'articulation. Les réservoirs préférés sont des réservoirs à gaz sous pression en alliage d'aluminium de série 6000 ou 7000.

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