METHOD OF MANUFACTURE OF BELLOWS REINFORCED WITH RINGS, AND BELLOWS UNIT ON ITS BASIS Russian patent published in 2008 - IPC B23K31/02 B23K9/16 F16J3/04 

FIELD: technological processes.

SUBSTANCE: membranes are delivered for assembly with the surface of requested purity, as thermally treated and with the same geometrical dimensions. Between connected membranes in the area of welded joint location reinforcing rings are installed with the thickness of 1-2.5 of membrane material thickness. Process of external joints welding is carried out with application of T-shaped heat sinks, which guarantee creation of localized welded joint made with argon-arc welding. Two annular heat sinks are used for welding of every internal joint. Welding joint of bellows has geometric dimensions that are identical in all sections of welding.

EFFECT: stability of bellows properties, increased corrosion resistance and stability in case of overload pressures.

2 cl, 6 dwg