I=Beam formation from rectangular slab - has wide faces pressed simultaneously throughout length along plane of deformation

摘要

An I-beam or other profiled beam is formed from a starting slab of rectangular cross section by pressing it throughout its length on its side faces. End faces of the slab are fixed in position at both ends to prevent a longitudinal deformation of the slab. The wide face of the slab may be pressed first, or wide faces of the slab may first be clamped in the middle and the narrow faces pressed until flanges (12) are formed, then the wide part pressed until a web (13) is formed. After formation, the beam may be rolled. The starting slab may be formed by continuous casting. The beam may be of steel.