ROLLING OF STEEL STRUCTURAL PROFILES WITH GALVANIZED COATING.

摘要

CONSTRUCTION STEEL PROFILES SUCH AS TUNNELS (2), WITH A THICKNESS OF MATERIAL MORE THAN 2 MM, ARE CONFORMED BY ROLLER TO FORM A PREFORMED PROFILE WITH PARTIALLY FOLDED CORNERS, GALVANIZED IN LINE, AND POSTLY CONFORMED BY ROLLER GET THE FINAL FORM. THE PREFORMED PROFILE HAS CONVEX SURFACES POINTING UP (3) WHAT ALLOWS A FAST EVICTION OF THE EXCESS OF GALVANIZED MATERIAL. PREFORMING CORNERS BEFORE GALVANIZING, THE ELONGATION OF THE SURFACE IS MINIMIZED IN THE LAYER OF GALVANIZED ELIMINATING THE FISURES. THIS IS INCREASED THROUGH FOLDING CORNERS AT CONSTANT LENGTH DURING THE PREFORMED AND OPERATIONS CONFORMED BY ROLLER.