TypeArticle
TitleSurface characterization of heat-affected zone in robot-based increment sheet forming
SourceJurnal Tribologi 24 (2020) 126-134
AuthorNazarul Abidin Ismail, Mohd Idris Shah Ismail, Mohd Khairol Anuar Mohd Ariffin, Azizan As’arry

Abstract

Robot-based incremental sheet forming is a new prospect in processing sheet metal due to the flexibility of robotic arm for fabricating a product with complex shape. Since the heat-affected zone on forming tool has a direct contact with the workpiece surface, the formed surface topography contains much information concerning the forming condition. In this study, the heat-affected zone on forming tool in robot-based incremental sheet forming of aluminum alloy sheet was analyzed using surface characterization. The experiments were conducted by evaluating the generation of heat-affected zone on the forming tool under different forming shapes, robot speeds, wall angles and step sizes. The energy dispersive spectrometry was used to analyze the elemental distribution on the surface of forming tool. The results indicated that the frictional heating and size of contact interface between surfaces of forming tool and workpiece have significantly affected the dimension of heat-affected zone on forming tool. It is also found that the adhesion material of aluminum revealed at the region of heataffected zone on forming tool. These findings are important to identify the tool condition and forming performance in product manufacturing.


Content

Jurnal Tribologi 24 (2020) 126-134