Abstract
In a conventional drawing process, the wire is pulled through a shaped die. Friction occurs between the products and the die which leads to the reduction in die life due to wear. There is a new technique using die-less for wire drawing and coating of wires or tubes. The wire submerged in polymer melt inside the pressure unit of different geometry, hydrodynamic pressure generated due to the flow of polymer melt between the wire and the pressure unit. In this research, a mathematical model was developed and theoretical study of the pressure distribution within the combined unit was completed through which a wire is drawn has been carried out. The unit used in this study consists of a parallel and exponential hyperbolic bore sections, having its smallest bore size greater than the incoming wire diameter. The unit is filled with a viscous fluid (polymer melt) through which the wire passes. The main objective of this project is to study theoretically the effect of changing dimensions on the pressure distribution along combined unit. Results have been presented and compared to other studies.