Abstract
Springback is the geometric change during forming process and it affects the dimensional accuracy of a finished product. This study aims to analyse the issue of springback in sheet bending by using response surface methodology (RSM). The effect of punch travel (d), strain hardening index (n), holding time (t), punch velocity (v) and width of the sheet (w) on the springback was explained by contour plots. The experiments were designed as per Centre Composite design and also linear and quadratic polynomial equations were used for developing the mathematical model. The experimental results of the punch travel, velocity, width of the sheets increased which increases the springback. The holding time increases when the springback decreases. ANOVA analysis was used to identify the most significant factor which affects the springback and it indicates that the springback is inversely proportional to the holding time and the springback is directly proportional to the width of the sheets. The results of scanning electron microscope (SEM) and energy dispersive analysis of X rays analysis for the nickel coated mild steel were also reported.
Highlights
Metal forming process in the manufacture of various products like pipes, automobiles, house hold items, buildings, aesthetic items etc plays a significant role and nowadays, air bending process is the most widely used method in sheet metal shops because of its flexible characteristics
Clad sheet metals made up of different material components are widely used because of their exceptional mechanical and functional properties and are in high demand for the manufacturing of industrial products and the most important technical issue faced by the sheet metal forming industries was the prediction of springback [1]
The demand for coating sheets got increased in order to protect the industrial product made of steel
Summary
Metal forming process in the manufacture of various products like pipes, automobiles, house hold items, buildings, aesthetic items etc plays a significant role and nowadays, air bending process is the most widely used method in sheet metal shops because of its flexible characteristics. Clad sheet metals made up of different material components are widely used because of their exceptional mechanical and functional properties and are in high demand for the manufacturing of industrial products and the most important technical issue faced by the sheet metal forming industries was the prediction of springback [1]. Steel sheets are extensively used and corrosion is a main factor which affects the surface of the sheets. The demand for coating sheets got increased in order to protect the industrial product made of steel. The effect of heating current on the spring back of bended sample was developed and analyzed.
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