Study on the influence of process parameters on the damage appearance during the push bench elongator process of super Cr13 tubes

Abstract

Abstract. In this paper the hot forming of Super Cr 13 seamless tubes during push bench elongator process is analyzed by means of laboratory experimental study and Finite Element simulation. The objective is to understand the effect of the industrial process parameters on the tube quality and the risk of damage appearance. The results of a hot tensile test campaign have been used to characterize rheological behavior of the material under the hot working conditions, and for determining the critical constants for several damage laws: Latham & Cockcroft. Finally, a Finite Element Model, FEM, of the Push Bench Elongator process have been implemented and the effect of rollers geometry and friction coefficient on tube quality and damage appearance have been addressed.