Controlled deforming process for flat laminated metal sheet involves cutting straight grooves in laminate layer to form bend lines in subsequent deformation

摘要

The control deforming process deforms a flat laminated metal sheet (1) in a controlled way, to form a shell with an almost all round or oval or polygonal cross section. Straight grooves (2) are cut in the laminate layer, so that these grooves form bend lines in the subsequent deformation of the sheet, which also has a circumferential groove (6) near the outer edge.