Abstract
The bimetallic sheets are used in the industrial sheet metal products to meet the demands of multi-functionality. The bending behaviour of bimetallic sheet is contributed by individual layers of the sheet and it is entirely different from the monolithic material. In this study, V-bending experiments are carried out to understand the springback, bend force and thickness change of Al-Cu clad sheets. The effect of different parameters such as sheet thickness, sheet setting condition, die angle, die opening and punch radius have been investigated. The results indicated that springback is more for smaller die angle, wider die opening and larger punch radius. Increase in die angle, increase in die opening or decrease in punch radius decreases the bend force. The clad sheet thickens at Al/Cu setting condition whereas it thins at Cu/Al setting condition. This thinning or thickening of the sheet influences the springback and bend force.
Highlights
In manufacturing of sheet metal components, press brake bending is one of the widely used processes
The results indicate that the bend force is smaller for thicker coating thickness, smaller punch radius, wider die opening, larger die radius and slower punch velocity
This paper investigates the effect of various parameters on the bending behaviour such as springback, bend force and thickness variation of Al-Cu clad sheet in V-bending process
Summary
In manufacturing of sheet metal components, press brake bending is one of the widely used processes. Srinivasan et al [10] conducted air V-bending experiments on electrogalvanised steel sheets to investigate the effect of various parameters on bend force behaviour. Laminated or clad metal sheets consist of two or more layers of dissimilar metals of different thicknesses and are formed by different joining methods like roll bonding They combine the mechanical, physical and chemical properties possessed by the base materials. Yilamu et al [12] investigated the bending behaviour of aluminiumstainless steel clad sheet in air V-bending process. Springback and thickness variation have been studied and the results showed that the bending behaviour is highly influenced by the sheet-set condition. This paper investigates the effect of various parameters on the bending behaviour such as springback, bend force and thickness variation of Al-Cu clad sheet in V-bending process
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