Experimental research on micro-deep drawing processes of pure gold thin sheet using DLC-coated female die

  • Chunju WangEmail author
  • Bin Guo
  • Debin Shan
  • Xinmei Bai


Micro-forming has been considered as an alternative for micro-fabrication method of micro-parts for its massive production characters. With pure gold thin sheet, the manufacture of micro-parts, e.g., micro-cup is still a delicate and challenging task and has received less attention. Since there are size effects of friction when a liquid lubricant is applied, the forming process becomes sensitive to the friction for the small strength of pure gold shin sheet, and the traditional deep drawing process cannot easily adapt to these kinds of micro-parts. This study presents the results of research conducted on micro-cup deep drawing process with pure gold thin sheet using diamond-like carbon film and polyethylene film to reduce the friction. In particular, the effect of lubrication condition on punch load, surface profile, reduction of thickness, and accuracy of inner diameter are investigated and discussed. Experimental results show that the diamond-like carbon-coated female die leads to lower punch load, high surface quality, uniform thickness of sheet, and high diameter accuracy. The diamond-like carbon film presents excellent wear-resistance properties under high contact pressure and large plastic deformation of thin sheet. The results indicate that micro-forming using diamond-like carbon-coated female die shows potentiality to be feasible alternative to micro-parts of pure gold thin sheet.


Micro-deep drawing Micro-cup Pure gold thin sheet Diamond-like carbon film Tribological properties 


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  1. 1.
    Mohan A (1975) The electroforming of gold—a manufacturing technique for intricate components. Gold Bull 8:66–69CrossRefGoogle Scholar
  2. 2.
    Engel U, Echstein R (2002) Microforming—from basic research on its realization. J Mater Process Technol 125–126:35–44CrossRefGoogle Scholar
  3. 3.
    Geiger M, Kleiner M, Eckstein R, Tiesler N, Engel U (2001) Microforming. CIRP Ann Manuf Techn 50:445–462CrossRefGoogle Scholar
  4. 4.
    Geiger M, Vollertsen F, Kals R (1996) Fundamentals on the manufacturing of sheet metal microparts. CIRP Ann Manuf Techn 45:277–282CrossRefGoogle Scholar
  5. 5.
    Chan WL, Fu MW (2012) Studies of the interactive effect of specimen and grain sizes on the plastic deformation behavior in microforming. Int J Adv Manuf Technol 62(9–12):989–1000CrossRefGoogle Scholar
  6. 6.
    Molotnikov A, Lapovok R, Gu CF, Davies CHJ, Estrin Y (2012) Size effect in micro cup drawing. Mater Sci Eng A 550:312–319CrossRefGoogle Scholar
  7. 7.
    Su HS, Chen FK, Tu KY (2011) Micro drawing of circular cups with thin stainless steel sheets. AIP Conf Proc 1353:270–275CrossRefGoogle Scholar
  8. 8.
    Saotome Y, Yasuda K, Kaga H (2001) Microdeep drawability of very thin sheet steels. J Mater Process Technol 113:641–647CrossRefGoogle Scholar
  9. 9.
    Witulski N, Justinger H, Hirt G (2004) Validation of FEM-Simulation for micro deep drawing process modeling. Proceeding of the 8th International Conference on Numerical Methods in Industrial Forming Processes. June 13–17, 2004, Columbus, OH, USA. pp. 952–957Google Scholar
  10. 10.
    Chan LC, Fu MW, Li N, Lu J (2010) FEA-aided design of multi-stage drawing process and tooling for production of a miniature sheet metal component. Int J Adv Manuf Technol 46:993–1000CrossRefGoogle Scholar
  11. 11.
    Vollertsen F, Hu Z, Schulze Niehoff H, Theiler C (2004) State of the art in micro forming and investigations into micro deep drawing. J Mater Process Technol 151:70–79CrossRefGoogle Scholar
  12. 12.
    Manabe K, Shimizu T, Koyama H, Yang M, Ito K (2008) Validation of FE simulation based on surface roughness model in micro-deep drawing. J Mater Process Technol 204:89–93CrossRefGoogle Scholar
  13. 13.
    Vollertsen F, Hu Z (2006) Tribological size effects in sheet metal forming measured by a strip drawing test. CIRP Ann Manuf Tech 55:291–294CrossRefGoogle Scholar
  14. 14.
    Fujimoto K, Yang M, Hotta M et al (2006) Fabrication of dies in micro-scale for micro-sheet metal forming. J Mater Process Technol 177:639–643CrossRefGoogle Scholar
  15. 15.
    Gong F, Guo B, Wang CJ, Shan DB (2010) Micro deep drawing of micro cups by using DLC film coated blank holders and dies. Diam Relat Mater 20:196–200CrossRefGoogle Scholar
  16. 16.
    Hu Z, Schubnov A, Vollertsen F (2012) Tribological behaviour of DLC-film and their application in micro deep drawing. J Mater Process Technol 212:647–652CrossRefGoogle Scholar
  17. 17.
    Guo B, Gong F, Wang CJ, Shan DB (2010) Size effects on friction in scaled down strip drawing. J Mater Sci 45:4067–4072CrossRefGoogle Scholar
  18. 18.
    Wang C, Guo B, Shan D, Bai X (2012) Tribological behavior of DLC film deposited on female die used in strip drawing. J Mater Process Tech 213(3):323–329CrossRefGoogle Scholar

Copyright information

© Springer-Verlag London 2012

Authors and Affiliations

  • Chunju Wang
    • 1
    • 2
    Email author
  • Bin Guo
    • 1
    • 2
  • Debin Shan
    • 1
    • 2
  • Xinmei Bai
    • 1
  1. 1.School of Materials Science and EngineeringHarbin Institute of TechnologyHarbinChina
  2. 2.Key Laboratory of Micro-systems and Micro-structures Manufacturing (Ministry of Education)Harbin Institute of TechnologyHarbinChina

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