PROCEDIMENTO PER LA FABBRICAZIONE DI UN OSSATURA METALLICA PER SCHIENALE DI SEDILE DI AUTOVEICOLO O SIMILE ED OSSATURA OTTENUTA CON DETTO PROCEDIMENTO

摘要

L-shaped blanks of flat plate are formed by shearing, the ends of the smaller branches of two L-shaped blanks are collinearly joined together in an end-to-end fashion by electrical welding between rollers to obtain a complete U-shaped blank which is then drawn to a C-shaped cross-section.