Deep Drawing with Macro-structured Tools and Their Influence on Residual Stresses

Wolf, Alexander; Tulke, Marc; Brosius, Alexander

doi:10.1007/978-3-030-78424-9_11

Cited by 2 publications

(3 citation statements)

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“…For the postprocessing of failures such as wrinkling, excessive thinning and bulging, known areas will be evaluated. In particular, the area prone to bulging in the process [4] will be analysed with respect to the bulge height measured from the bottom. The other area of interest is the backside of the cup (not visible on figure 3a).…”

Section: Approach and Methodsmentioning

confidence: 99%

“…This concept was enhanced by Brosius et al [6], where the structure of the tools changed to a wave-like structure. This macro-structure showed benefits in current research, such as improved process window (figure 1b) [3], less residual stresses and therefore reduced springback [4] next to the point that it can be used without lubrication. Therefore, good process robustness can be assumed which is further substantiated in the present study.…”

Section: Deep Drawing Processmentioning

confidence: 99%

“…Result shown here indicate, in addition to the general enlargement of the useable process window [3], a high tolerance toward volatile material properties and variations of the blank. The produced parts show consistent quality with a reduction in residual stresses [4]. To examine the robustness in particular, virtual studies for steel alloy DX54 with varying alignment of the blank were performed.…”

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confidence: 98%

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Robustness of macro-structured deep drawing process

Wolf,

Tulke,

Brosius

2024

IOP Conf. Ser.: Mater. Sci. Eng.

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Reaching robustness of forming processes is one of the main challenges in manufacturing technologies. Volatile material properties [1] and fluctuations in process parameters often result in insufficient part quality and rising production costs, especially in production chains [2]. As a common solution for this problem, numerical simulations are used to consider scattering of material parameters and define a useable process window with a specified safety margin. A new approach is the use of macro-structured tools. Result shown here indicate, in addition to the general enlargement of the useable process window [3], a high tolerance toward volatile material properties and variations of the blank. The produced parts show consistent quality with a reduction in residual stresses [4]. To examine the robustness in particular, virtual studies for steel alloy DX54 with varying alignment of the blank were performed. The resulting properties, such as the blank draw-in, thinning and springback, were examined in predefined positions on the blank to compare the experiments. The enlarged process window will be analysed and a strategy for a deeper understanding of the forming process will be generated, which will sustain the design of robust tools and processes.

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Section: Approach and Methodsmentioning

confidence: 99%

Section: Deep Drawing Processmentioning

confidence: 99%

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confidence: 98%

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