Study on Frictional Behavior of AA 6XXX with Three Lube Conditions in Sheet Metal Forming

Springback analysis of U-bending based on high strength steel

“…More than 70% of autobody had been used HSS instead of common strength steel (CSS) till 2015. However, because of the higher strength and toughness, its springback is relatively larger than CSS, resulting in low precision of shape and dimension, affecting the product quality such as appearance, assembly capability and reliability, etc [1][2].…”

The Interaction between the Sheet/Tool Surface Texture and the Friction/Galling Behaviour on Aluminium Deep Drawing Operations

“…It has been widely accepted that EDT improves the forming behaviour of aluminium sheets due to better friction behaviour [26]. Several researches demonstrated the improved performance of EDT surfaces against nontextured mill finish (MF) surfaces [27][28][29][30]. On the other hand, although the patterned tool texturing has provided promising results [22,31], it is widely accepted that the work material adhesion and galling risk increases with tool roughness [32] and therefore, appropriate polishing should be applied [33,34].…”

“…Although the interplay between the tool and the workpiece texture seems to be presumable, it has not been investigated. Previous researches generally omitted tool surface roughness data [27][28][29][30]35]. Similarly, a broad range of roughness values are reported under EDT textured sheet definition, ranging from Ra 0.2 to 1.7 [27,29,30], or quantitative data on the EDT texture was omitted [35,36].…”

“…Previous researches generally omitted tool surface roughness data [27][28][29][30]35]. Similarly, a broad range of roughness values are reported under EDT textured sheet definition, ranging from Ra 0.2 to 1.7 [27,29,30], or quantitative data on the EDT texture was omitted [35,36]. Additionally, the effect of the EDT texturing degree has not been previously studied.…”