Abstract: The invention relates to a device for welding the end faces of thin-walled jackets (12) on a welding plane, said device comprising two cylindrical positioning receiving units (1), which center the jackets (12) to be welded in relation to their outer diameters, both receiving units (1) being located on an alignment base flush with one another and being axially displaceable. A deformable, annular, membrane-type heat exchanger is situated on the exterior of each receiving unit (1), said heat exchanger being formed from a set of sheets (2) consisting of heat-resistant material that are separated from one another. The lower end of the sheets is designed to be in thermal contact with the jacket (12).

Abstract: The invention relates to a device for preparing the end faces of thin-walled jackets for welding, comprising a housing (1), on which an annular separator (2) is mounted, said separator containing at least two groups of elongated deformation elements (4, 6). The longitudinal axes of the deformation elements (4) of a first group are aligned radially in relation to the central axis of the separator (2) and the longitudinal axes of the deformation elements (6) of a second group are aligned at an acute angle (?) in relation to a radial through the central axis of the separator (2).

Abstract: The aim of the invention is to increase the strength and reliability of a high-pressure container. To achieve this, the high-pressure container comprises a thin-walled, closed, sealed, metal cylindrical liner (1) with at least one neck and at least one outer reinforcement jacket (2) consisting of a composite material that is formed from at least one group of layers of high modulus fiber of a reinforcement material, said fibers being aligned spirally and in an annular direction in relation to the cylindrical liner (1) and having previously determined linear arrangement densities. One layer of fibers of the spiral reinforcement (4) is positioned above a layer of fibers of the annular reinforcement (3).

Abstract: The invention relates to a high-pressure container comprising a thin-walled, cylindrical metal liner (1) having bases (8) on the end sections and an outer stable jacket (2) that surrounds the liner (1). At least one of the bases (8) of the liner (1) has a slight convex curvature towards the interior of the liner (1). A pressure converter (4) is situated between the outer surface of the convex base (8) and the inner surface of a base part of the stable jacket (2), said converter being constructed from a rigid profiled base on the side facing the base part of the rigid jacket (2) and a deformable cushion (6) of viscoelastic material on the side facing the convex base (8).