Process Design of Multi-pass Shape Drawing Considering the Drawing Stress

Abstract

In this study, a process design method for the multi-pass shape drawing is proposed with consideration of the drawing stress. First, the shape drawing load was calculated to evaluate the shape drawing stress, and the intermediate die shape was determined by using an electric field analysis and the average reduction ratio. In order to evaluate whether material yielding occurs at the die exit, the drawing stress was determined by using the calculated shape drawing load. Finally, FEanalysis and shape drawing experiments were conducted to validate the design of the multi-pass shape drawing process. From the results of the FE-analysis and shape drawing experiments, it was possible to produce a sound shape drawn product with the designed process. The dimensional tolerances of the product were within the allowable tolerances.

Process Design for Multi-pass Profile Drawing using Round Materials

“…Brücker 등은 프로파일 생산을 위한 다 단 인발공정 전문가 시스템을 개발하였다 [4]. Kim 등 은 인발응력을 고려한 다단 형상인발 공정설계를 하였으며 [5], Kim 등은 인발응력을 고려한 다단 형상 인발 공정설계에 관한 연구를 수행하였다 [6]. …”