Effect of Wetting Behavior of Shot Peened Surfaces on the Tribological System During Cup Backward Extrusion of Aluminum Alloy EN AW 6082

In the context of resource efficient production, forming technologies such as cup backward extrusion become increasingly more important. The substitution of conventional materials by materials with similar mechanical properties and high lightweight potential, for instance the aluminum alloy EN AW 6082, leads to new challenges in the automotive industry. In order to avoid high economic damage caused by the adhesion tendency of aluminum alloys, which subsequently leads to increased tool wear, the tribological system must be optimized. Through drop shape analysis, the influence of the wetting behavior of the lubricants Gardomer L6261 and Gardolube L301/1 on workpieces, which were shot peened using different materials, on the punch force during cup backward extrusion was investigated. In addition, visioplasticity tests were employed in order to understand the change in flow behavior in different tribological systems. It was shown that both suitable lubrication as well as workpiece structuring positively influence the tribological system.