Numerical and Experimental Analysis of Hardening Distortions of Drawpieces Produced in Hot Stamping Process

Abstract

The paper presents the results of a numerical simulation of the distortions in drawpieces, generated during the production of the drawpieces using the hot stamping method. A division of the distortions is proposed depending on their shape and based on the industrial experience of the author of this publication, i.e., concerning flexure and torsion (skewing). Numerical simulations of the hot stamping process were performed for the representative drawpieces, in which the hardening distortions can be assigned to the above specified forms. A numerical compensation of the hardening distortions was proposed to obtain, after the compensation process, a drawpiece complying with the requirements concerning shape and dimensional tolerances. The results of the simulations have been confirmed in the course of the experimental studies. Conclusions and recommendations for the analysis of the process were also elaborated.

Keywords

• hot stamping
• hardening distortions
• FEA analysis
• 22MnB5