CFD Evaluation of Hot Stamping Die Cooling System

Abstract

This paper presents the results of CFD analysis on a complex near optimized cooling channels of hot stamping die for automotive structural part. Near optimum design is acceptable since cooling channels design is limited by its machining constraints. The obje ctive of this evaluation is thus to determine the efficiency the cooling system by monitoring its cooling rate during 8 seconds of the quenching process. The die and blank were modelled as 3D volume mesh in a closed position thus ignoring the blank history data prior to the stamping operation. Temperature distribution representing hardness of the simulated final part is compared with the actual stamped component. The same procedure was validated against another structural component of different cooling channel design. The results show temperature pattern after 8 seconds can be used to predict harness distribution of the final part, thus indicating the viability of this method to be used in cooling system design.

Analysis of Hot Stamping Tool Cooling System—A Case Study

“…Similar analyses were shown in works [ 23 , 24 , 25 , 26 , 27 ], with attention paid to the methodology of optimal selection of dimensions and location of cooling channels with the use of genetic algorithms and the parameters of the process itself using the Taguchi method. Paper [ 28 ] presents the simulation results of the hot forming process together with the analysis of the flow of the cooling medium. The temperature distribution on the surface of the drawpiece and the hardness at selected points obtained as a result of computer simulations were assessed, but no experiments were conducted to confirm the correctness of the obtained results.…”