A method of manufacturing vessels

 

Usage: the invention relates to southstream, in particular to the manufacture of vessels of virtually unlimited size (diameter in excess of 1012 m) on any internal pressure environment. Essence: the proposed method is made vessels with pseudo-spherical bottoms by assembling and welding a flat hollow billet of the vessel and subsequent distribution of internal pressure. To obtain a pseudo-spherical bottoms after the distribution of vessel terminations flat blanks are in the form of trapezoids, forming a truncated four-sided pyramid, with a total height equal to the radius of the vessel. End elements end portion are made of flat or slightly convex square billet with sides approximately equal to four times the radius of the longitudinal grooves. The invention provides for the manufacture of receptacles with integral parts of the pseudo-spherical shape, increase strength and increase the efficiency of their manufacturing techniques. 1 C.p. f-crystals, 3 ill.

Description text in facsimile form (see graphic part).

Claims

1. A method of manufacturing vessels, which prepare flat and gelbooru the ku is deformed by internal pressure to obtain a vessel of a given size, wherein the end elements of the flat blanks are in the form of trapezoids, forming a truncated four-sided pyramid with a total height equal to the radius of the vessel, and the sizes of the broken forming a flat element, the end portion of the workpiece is determined by the values of angles between the sides and lower bases of the trapezoid and the lengths of the upper and lower bases of the trapezoid, which is determined from the condition of minimum length broken generatrix.

2. The method according to p. 1, characterized in that the end element end portion is made, for example, by stamping from a flat or slightly convex square billet with sides approximately equal to four times the radius of the longitudinal grooves.

 

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