Abstract
The cushion-ram pulsation (CRP) technology offers a significant increase in formability by the novel stepwise deep drawing with holding pauses. The influence of different incremental drawing depths and breaks on the deep drawability of 22MnB5 during press hardening with CRP is investigated for unheated and heated tools. Softening induced by the holding times during hot forming with CRP can play a relevant role in achieving higher drawing depths and is consequently described. The forming analysis is carried out by means of FE simulation and experiments. The influence of softening on the improved forming capacity can consequently be quantified and a recommendation for the CRP technology in press hardening can be determined.
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