Analysis of Hot Forming of a Sheet Metal Component Made of Advanced High Strength Steel

Date

2013-07-10

Author

Demirkaya, Sinem
Darendeliler, Haluk
Gökler, Mustafa İlhan
Ayhaner, Murat

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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To provide reduction in weight while maintaining crashworthiness and to decrease the fuel consumption of vehicles, thinner components made of Advanced High Strength Steels (AHSS) are being increasingly used in automotive industry. However, AHSS cannot be formed easily at the room temperature (i.e. cold forming). The alternative process involves heating, hot forming and subsequent quenching. A-pillar upper reinforcement of a vehicle is currently being produced by cold forming of DP600 steel sheet with a thickness of 1.8 mm. In this study, the possible decrease in the thickness of this particular part by using 22MnB5 as appropriate AHSS material and applying this alternative process has been studied. The proposed process involves deep drawing, trimming, heating, sizing, cooling and piercing operations. Both the current production process and the proposed process are analyzed by the finite element method. The die geometry, blank holding forces and the design of the cooling channels for the cooling process are determined numerically. It is shown that the particular part made of 22MnB5 steel sheet with a thickness of 1.2 mm can be successfully produced by applying the proposed process sequence and can be used without sacrificing the crashworthiness. With the use of the 22MnB5 steel with a thickness of 1.2 mm instead of DP600 sheet metal with a thickness of 1.8 mm, the weight is reduced by approximately 33%.

Subject Keywords

Hot forming, Advanced high strength steels, Finite element method

URI

https://hdl.handle.net/11511/33045

DOI

https://doi.org/10.1063/1.4806855

Collections

Department of Mechanical Engineering, Conference / Seminar

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Citation Formats

S. Demirkaya, H. Darendeliler, M. İ. Gökler, and M. Ayhaner, “Analysis of Hot Forming of a Sheet Metal Component Made of Advanced High Strength Steel,” 2013, vol. 1532, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33045.