Influence of thickness on formability in 6082-T6

Abstract

Incremental Sheet Forming is a promising process for the small batch manufacturing of sheet metal parts due to its flexibility and to the high formability achievable. In the Incremental Sheet Forming process a localised state of deformation is imposed by the CNC controlled motion of a simple tool. Although the process potentiality, its industrial application is still bordered by some drawbacks such as excessive material thinning, part inaccuracy or process time. In the last years, several works were carried out by the researcher all over the world mainly focused on material formability. However further efforts are required in order to overcome the above specified drawbacks. In particular, concerning the material thinning, the simple Sine Law allows to predict the actual sheet thickness in a rough way. In fact, the Sine Law takes into account the initial thickness and the wall slope angle, neglecting all the others process parameters. For this reason, a more robust tool which takes into account the whole process complexity is strongly necessary. In this paper a wide investigation on 6082-T6 aluminium alloy was carried out with the aim to determine the influence of process parameters on thinning behaviour. Finally, with the aim to obtain a reliable model to predict the thinning, the ANOVA analysis was executed on the experimental data designed by DOE. All the other details are reported in the paper.

This is a preview of subscription content, log in to check access.

References

  1. [1]

    J.J. Park, Y.H. Kim, Fundamental studies on the incremental sheet metal forming technique, J. of Materials Processing Technology, 140: 447–453, 2003.

    Article  Google Scholar 

  2. [2]

    J. Jeswiet, F. Micari, G. Hirt, A. Bramley, J. Duflou, J. Allwood, Asymmetric Single Point Incremental Forming of Sheet Metal, Annals of the CIRP, 54/2: 88–114, 2005.

    Article  Google Scholar 

  3. [3]

    G. Ambrogio, L. De Napoli, L. Filice, F. Gagliardi, M. Muzzupappa, Application of Incremental Forming process for high customised medical product manufacturing, International Journal of Materials Processing Technology , 162–163: 156–162, 2005.

    Article  Google Scholar 

  4. [4]

    J. Jeswiet, E. Hagan, Rapid Proto-Typing with sheet metal. CNC RFIN, International Journal of Forming Process, 6/3–4: 315–324, 2003.

    Article  Google Scholar 

  5. [5]

    M. Shim, J.J. Park, The formability of aluminum sheet in incremental forming, International Journal of Materials Processing Technology, 113: 654–658, 2001.

    Article  Google Scholar 

  6. [6]

    Y.H. Kim, J.J. Park, Effect of process parameters on formability in incremental forming of sheet metal, International Journal of Materials Processing Technology, 130–131: 42–46, 2003.

    Google Scholar 

  7. [7]

    Reagan, J., Smith, E. Metal Spinning, Lindsay Publications, (1991).

  8. [8]

    G. Hussain, L. Gao: A novel method to test the thinning limit of sheet-metals in negative incremental forming. International Journal of Machine Tools and Manufacture, 47: 419–435, 2007.

    Article  Google Scholar 

  9. [9]

    K. Kitazawa, A. Nakajima, Cylindrical incremental drawing of sheet metals by CNC incremental forming process, Proc. of the 6th ICTP Conference, Nuremberg, (1999) 1495–1500.

  10. [10]

    G. Ambrogio, L. Filice, F. Gagliardi and F. Micari: Sheet thinning prediction in Single Point Incremental Forming. Advanced Material Research, 6–8: 479–486, 2005.

    Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to G. Ambrogio.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Manco, G.L., Ambrogio, G. Influence of thickness on formability in 6082-T6. Int J Mater Form 3, 983–986 (2010). https://doi.org/10.1007/s12289-010-0934-6

Download citation

Keywords

  • Incremental Forming
  • thinning
  • DoE