INSTALLATION FOR MAKING BRANCH PIPES Russian patent published in 1997 - IPC

FIELD: plastic metal working, namely manufacture of sharply bent branch pipes of tubular blanks. SUBSTANCE: installation includes inlet chamber with injectors and final open-end lined chamber with additional heating burners arranged in boundary of shaping and sizing portions of plugs. Chambers are separated by sections with the aid of buildup partitions made of two annular semiflanges. T-shaped cross section flange and insulating gasket are arranged between semiflanges. Each section is in the form of cylindrical housing with working chamber inside it. Working chamber has coaxially arranged cylinders with radially arranged jet openings. Walls of cylindrical working chambers are mounted on T-shaped flange with possibility of axial motion. Coaxially arranged cylinders have walls mounted on annular semiflanges with gap relative to annular T-shaped flange. EFFECT: improved design, lowered energy consumption, optimal temperature modes at operating and idling periods. 5 dwg