Influence Of Die Geometry And Friction On Springback During Cold Drawing Of Tubes: An Fea Investigation

Abstract

The cold drawing of seamless tubes can cause unwanted geometric deviations in the form of undesired springbuck, where die geometry, frictional conditions, and material properties are the main factors of influence. The AISI 304 stainless steel tubes were simulated using both experimental and finite element (FE) models in this paper in order to discuss how die semi-angle, bearing length, and friction coefficient influence the springback of the tubes. The numerical model has been constructed based on ABAQUS/ Explicit and checked against laboratory-scale experiments of tube drawing. The Coulomb law was used to model the frictional contact with a coefficient between 0.05 and 0.15. Findings have shown that the smaller die angles and reduced friction coefficients are useful in reducing the elastic recovery and dimensional deviations. The springback values predicted by the FEA were close to experimental values, with the highest deviation of 6.8, which proved that the model was accurate. These results can be used in the future to design processes and the selection of dimension control parameters in the production of seamless tubes.