What are the 3 main defects found in sheet metal forming processes?
Views: 125 Update date: Aug 16,2024
In sheet metal forming processes, the three main defects typically encountered are:Wrinkling: This occurs when the sheet metal is subjected to compressive stresses, leading to the formation of waves or wrinkles on the surface. It often happens in areas where the metal is unsupported or where there is excessive material flow during processes like deep drawing or bending.
Tearing: Tearing is a defect where the sheet metal experiences a rupture or crack due to excessive tensile stress. This can occur when the material is overstretched, typically in areas with sharp corners, insufficient material thickness, or where there is inadequate lubrication.
Springback: After the forming force is removed, the sheet metal tends to partially return to its original shape due to its elastic nature. This elastic recovery, known as springback, can result in inaccuracies in the final shape of the part, requiring adjustments in the design or forming process to compensate for the effect.
