FIELD: construction.
SUBSTANCE: previously on a shell sheet they make grooves by pressure working with a rotary tool to form a flash at two sides of the grooves. Welded ends of ribs are made as sharpened by shape of the groove. Then the sharpened ends of ribs are arranged in grooves of the sheet, and the shell sheet is welded with ribs at two sides of ribs using the flash as an additive material. The groove is made with depth from 0.5 to 0.6 of sheet thickness.
EFFECT: invention makes it possible to ensure strength of a sheet-rib welded joint.
4 dwg
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