METHOD OF MANUFACTURING FROM SHEET MATERIALS WITH THICKNESS FROM 0,2 mm AND BELOW OF STEPPED AXIALLY SYMMETRIC SHELLS WITH CENTRAL PROTRUSION, HEIGHT RATIO OF WHICH TO ITS DIAMETER IS EQUAL OR MORE THAN 0,5

摘要

FIELD: technological processes. ^ SUBSTANCE: previously half-finished stock is pulled from sheet billet with conical surface and its further deforming is done into finished product. Half-finished product is made in the form of cylindrical cap, cylindrical surface of which is adjacent to conical surface, and conical surface - with bottom surface of cap. Diameter of cap bottom part corresponds to diameter of central protrusion. Half-finished product cavity is filled with liquid not below the line of conical and cylindrical surfaces adjacency, and protrusion wall is obtained by means of conical surface covering on puncheon. ^ EFFECT: technological resources are expanded. ^ 3 dwg, 1 ex