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Hot single-point incremental forming assisted by induction heating

  • Amar Al-ObaidiEmail author
  • Verena Kräusel
  • Dirk Landgrebe
ORIGINAL ARTICLE

Abstract

High-strength sheet metal materials are hardly formed by conventional single-point incremental forming; the formed parts produced using this process exhibit decreased geometrical accuracy and low formability values. In the present study, a new process is investigated for hot single-point incremental forming. The method was simplified by combining incremental sheet metal forming on the front side of the sheet and induction heating on the backside of the sheet. The process setup was based on elementary tooling; it utilizes synchronized movement of the tool with the inductor. The locally heated zone allows smooth forming of advanced high-strength steels. The appropriate heating rate was controlled by optimizing the correct relationships between the process variables by using DC04 as a reference material for comparison. The process variables affecting the operation have been investigated and are the step size, induction power, and feed rate. This method has been tested and successfully improved. The results show that the formability improved and that the residual stress of DP 980 steel decreased. On the other hand, it was possible to diminish the springback and to increase the geometrical accuracy for 22MnB5 steel. Furthermore, a major reduction of the forming forces was noticed while incremental forming was performed and supported by induction heating. The significant results demonstrated a method to solve the forming problems of high-strength metals by induction heating at forming.

Keywords

Induction heating Single-point incremental forming Formability Advanced high-strength steel 

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References

  1. 1.
    Billur E, Altan I (2010) Challenges in forming advanced high strength steels. Proceedings of the Int. Conference on Developments in Sheet Metal Forming, Stuttgart, Germany, pp 285–304, May 2–4, 2010Google Scholar
  2. 2.
    Neugebauer R, Altan T, Geiger M et al (2006) Sheet metal forming at elevated temperatures. CIRP Ann Manuf Technol 55:793–816. doi: 10.1016/j.cirp.2006.10.008 CrossRefGoogle Scholar
  3. 3.
    Yanagimoto J, Oyamada K (2005) Springback of high-strength steel after hot and warm sheet formings. CIRP Ann Manuf Technol 54:213–216CrossRefGoogle Scholar
  4. 4.
    Duflou JR, Callebaut B, Verbert J, De Baerdemaeker H (2007) Laser assisted incremental forming: formability and accuracy improvement. CIRP Ann Manuf Technol 56:273–276. doi: 10.1016/j.cirp.2007.05.063 CrossRefGoogle Scholar
  5. 5.
    Göttmann A, Diettrich J, Bergweiler G et al (2011) Laser-assisted asymmetric incremental sheet forming of titanium sheet metal parts. Prod Eng 5:263–271. doi: 10.1007/s11740-011-0299-9 CrossRefGoogle Scholar
  6. 6.
    Fan G, Gao L, Hussain G, Wu Z (2008) Electric hot incremental forming: a novel technique. Int J Mach Tools Manuf 48:1688–1692. doi: 10.1016/j.ijmachtools.2008.07.010 CrossRefGoogle Scholar
  7. 7.
    Fan G, Gao L (2014) Mechanical property of Ti-6Al-4V sheet in one-sided electric hot incremental forming. Int J Adv Manuf Technol. doi: 10.1007/s00170-014-5733-7 Google Scholar
  8. 8.
    Meier H, Magnus C (2013) Incremental sheet metal forming with direct resistance heating using two moving tools. Key Eng Mater 554–557:1362–1367. doi: 10.4028/www.scientific.net/KEM.554-557.1362 CrossRefGoogle Scholar
  9. 9.
    David William Adams. Improvements on single point incremental forming through electrically assisted forming contact area prediction and tool development. Dissertation, Queen’s University Kingston, Ontario, CanadaGoogle Scholar
  10. 10.
    Shi X, Gao L, Khalatbari H et al (2013) Electric hot incremental forming of low carbon steel sheet: accuracy improvement. Int J Adv Manuf Technol 68:241–247. doi: 10.1007/s00170-013-4724-4 CrossRefGoogle Scholar
  11. 11.
    Göttmann A, Bailly D, Bergweiler G et al (2012) A novel approach for temperature control in ISF supported by laser and resistance heating. Int J Adv Manuf Technol 67:2195–2205. doi: 10.1007/s00170-012-4640-z CrossRefGoogle Scholar
  12. 12.
    Ji YH, Park JJ (2008) Incremental forming of free surface with magnesium alloy AZ31 sheet at warm temperatures. Trans Nonferrous Metals Soc China 18:s165–s169. doi: 10.1016/S1003-6326(10)60195-1 CrossRefGoogle Scholar
  13. 13.
    Buffa G, Campanella D, Fratini L (2012) On the improvement of material formability in SPIF operation through tool stirring action. Int J Adv Manuf Technol 66:1343–1351. doi: 10.1007/s00170-012-4412-9 CrossRefGoogle Scholar
  14. 14.
    Ambrogio G, Filice L, Manco GL (2008) Warm incremental forming of magnesium alloy AZ31. CIRP Ann Manuf Technol 57:257–260. doi: 10.1016/j.cirp.2008.03.066 CrossRefGoogle Scholar
  15. 15.
    Galdos L, de Argandoña ES, Ulacia I, Arruebarrena G (2012) Warm incremental forming of magnesium alloys using hot fluid as heating media. Key Eng Mater 504–506:815–820. doi: 10.4028/www.scientific.net/KEM.504-506.815 CrossRefGoogle Scholar
  16. 16.
    Hussain G, Gao L (2007) A novel method to test the thinning limits of sheet metals in negative incremental forming. Int J Mach Tools Manuf 47:419–435. doi: 10.1016/j.ijmachtools.2006.06.015 CrossRefGoogle Scholar
  17. 17.
    Rudnev V, Loveless D, Cook R, Black M (2003) Handbook of induction heating. INDUCTOHEAT, Inc. Madison Heights, Michigan, U.S.A., pp pp 111–117, Marcel Dekker, IncGoogle Scholar
  18. 18.
  19. 19.
    Behera AK, Verbert J, Lauwers B, Duflou JR (2013) Tool path compensation strategies for single point incremental sheet forming using multivariate adaptive regression splines. Comput Aided Des 45:575–590. doi: 10.1016/j.cad.2012.10.045 CrossRefGoogle Scholar
  20. 20.
    Naganathan A, Penter L (2012) Hot Stamping. In: Taylan A, Erman T (eds) Sheet metal forming: processes and applications. ASM International, Materials park, Ohio, pp pp 135–156Google Scholar

Copyright information

© Springer-Verlag London 2015

Authors and Affiliations

  • Amar Al-Obaidi
    • 1
    • 2
    Email author
  • Verena Kräusel
    • 1
  • Dirk Landgrebe
    • 3
  1. 1.Institute of Machine Tools and Production Processes IWPTechnische Universität ChemnitzChemnitzGermany
  2. 2.Foundation of Technical EducationTechnical Collage BaghdadBaghdadIraq
  3. 3.Fraunhofer Institute for Machine Tools and Forming Technology IWUChemnitzGermany

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