Pages: 60-68

Abstract

Spring back is one of the key parameters in bending process. After the bending operation, the material under pressure is highly likely to return to its previous status due to the release of the applied forming force, which is known as ‘spring back.’ The precision of the forming operation is of prime significance for the final production of goods in industry. Therefore, the present study aimed to examine the effects of some parameters (die radius, punch velocity, sheet width and bending axis orientation) on the behavior of spring back in free bending process. The experiments were conducted on steel sheets with the dimensions 12cm×12cm which are extensively used in automotive industry. The results of the present study revealed that there was a direct relationship between springback and each of die radius, punch velocity, sheet width, and orientation of the bending axis orientation.