Experimental studies and modeling of air bending process of electrogalvanised steel sheets

Abstract

Sheet metal bending being an important sheet metal forming process employs a press brake with proper tooling to produce different bend components The flexibility of the bending process is improved by the air bending technique in which the different bend angles can be produced by solely controlling the punch travel into the die without the need for changing tool sets Because of this versatility the lead time is reduced in an air bending technique and hence it is commonly used in sheet metal industries Steel sheets are widely used to manufacture various parts such as automotive panels electrical cabinets and computer casings in the sheet metal industry but the susceptibility to corrosion is their natural weakness To overcome this galvanised steel sheets with improved corrosion resistance are preferred for high quality products Since electrogalvanised EG steel sheets have better formability and surface quality they are preferred over hot dipped sheets in many of the industrial applications