Abstract
In this paper, the process model for cryogenic forming with macro-structured tools is analyzed regarding the continuously changing thermal conditions during the deep drawing process. For this purpose, the transient contact conditions within the macro-structure are investigated for different tool designs of the macro-structure as a function of the immersion depth and resulting contact pressure in a numerical analysis. The determination of the heat transfer coefficient between the aluminum sheet metal and the tools as a function of the contact pressure is carried out experimentally. Numerical investigations are used to determine an improved macro-structure in terms of low-heat flow and reliable suppression of wrinkling. The influence of the tool design on the temperature distribution is presented and compared with the conventional deep drawing process.
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Tulke, M., Lafarge, R., Wolf, A., Brosius, A. (2024). Contact Conditions and Temperature Distribution During Cryogenic Deep Drawing with Macro-structured Tools. In: Mocellin, K., Bouchard, PO., Bigot, R., Balan, T. (eds) Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity. ICTP 2023. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-031-40920-2_25
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DOI: https://doi.org/10.1007/978-3-031-40920-2_25
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