| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
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| Symposium
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Formability and Spring-back Issues in Ultra-high Strength Steels and High Strength Aluminum Alloys
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| Presentation Title |
Hybrid Bead Development and Validation; Auto Steel Partnership |
| Author(s) |
Chris Roman |
| On-Site Speaker (Planned) |
Chris Roman |
| Abstract Scope |
Springback remains a significant issue in cold stamping with the implementation of higher strength steels. To address this, hybrid beads were investigated as an alternate approach to traditional stake beads as a method to address springback and improve material utilization. To accomplish this, stamping simulations and physical die trials were performed to design and compare different hybrid bead geometries. In all, five hybrid bead designs were evaluated in a laboratory scale trial and two of these designs were subsequently used in a larger production scale die trial. During these production scale die trials, both the robustness of the beads and the associated forming forces emerged as significant issues with successfully implementing them. Hybrid beads did prove to be effective is reducing springback and side wall curl when sufficient forming forces were available. Additional work would be required to further develop alternate hybrid bead geometries for their successful implementation.
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| Proceedings Inclusion? |
Planned: |