Hot-extrusion of platinum-rhodium alloy tubes

Abstract

A technological method for producing tubes from PtRh7 platinum-rhodium alloy by hot extrusion has been examined. Finite element analysis was used to perform process calculations. Two technological variants were simulated—with extrusion speeds of 27 mm/s and 3 mm/s. It was found that extrusion at a low speed may lead to metal cooling, resulting in an unacceptable increase in axial stresses and forces. Graphical data on strain and temperature distribution are presented. The extrusion process was implemented using a rational variant of parameters.