Significance of Initial/Stock Material Thickness in Convolution Forming Explored Using Three-Dimensional Scanning and Dimensional Analysis

This study examines thickness variations arising from press tool operations during the production of SS 304 U-shaped profiles. Recognizing the potential impact of thickness variations on the fatigue life of the formed metal profile, the investigation focuses on post-forming thickness variations and profile precision, correlating these aspects with the specified stock thickness. The approach for fabricating such profiles typically involves either rolling and welding a sheet to create a tube or initiating the process with an existing tube that is then subjected to forming. This experiment adopts the rolled and welded approach, known for its comparatively higher cyclic durability. This report presents the methodology and outcomes of laser 3D scanning, emphasizing the critical consideration of raw material thickness in these manufacturing operations.