MULTIPLE COMPONENT STRUCTURAL MEMBER

摘要

A novel method is provided for the continuous formation of a structural member having at least one web element and at least one hollow flange elemen t extending longitudinally of an edge of the web element. The method includes the steps of cold roll forming a first continuous strip of metal to form the at least one hollow flange element, the free edges of the hollow flange element being spaced to form a continuous aperture therein. A second continuous strip of metal is th en guided between the free edges and at least partially into the aperture. The free edges are then continuously fused to opposed faces of the web element by high frequenc y electrical induction welding, or by electrical resistance welding.