Study of modern perforation processes specific to the automotive industry

Abstract

The purpose of this paper is to critically present the trend in recent years in terms to use of perforation processes for perforation parts of the cars, operations that have real advantages, including reducing the environmental pollution in general. A study and a critical and comparative analysis are performed, referring to three perforation processes: hydroperforation, laser perforation and thermal erosion perforation. Hydroperforation is a process that is applied in a liquid environment and usually at the end of plastic deformation operations of some tubes by hydroforming in installations specially designed for this purpose. The paper presents some defining characteristics of these processes used in the industry being exemplified for the automotive industry. In general, all three perforation processes are performed at the end of the part formation by plastic deformation by hydroforming.