METHOD OF MANUFACTURING A CIRCULAR ARCH OF COMPOSITE SECTION WITH THIN CROSS-CORRUGATEDTED WALL

摘要

FIELD: metallurgy.;SUBSTANCE: thin-sheet rectangular billet is profiled with symmetrical continuous transverse corrugations of a triangular, trapezoidal or sinusoidal profile along the entire length. Next, the resulting billet is joined by welding with a lower waist sheet along the contact line. Obtained T-bar is bent at a given radius relative to the lower belt with position fixation and is attached by welding to the free edge of corrugated wall of the upper waist sheet.;EFFECT: improving the accuracy of arch manufacturing.;4 dwg, 1 ex