Plasma printing of micro-punch assembly for micro-embossing of aluminum sheets

Tatsuhiko Aizawa, Kenji Wasa, Abdelrahman Farghali, Hiroshi Tamagaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper concerned with micro-embossing of micro-cavities and micro-grooves into aluminum sheets by CNC-stamping with use of the arrayed DLC multi-punches. Both SKD11 and AISI420 steel die substrates were prepared and DLC-coated with the thickness of 10 to 15 μm. This DLC coating worked as a punch material. The two dimensional micro-patterns were printed onto this DLC film by maskless lithography. The unprinted DLC films were removed by the plasma oxidation to leave the three dimensional DLC-punch array on the steel substrate. This micro-pillared and micro-grooved DLC-punches were placed into the cassette die set for micro-embossing process by using the table-top CNC stamper. The micro-circular patterns transformed to the micro-pillars in the DLC punch by the plasma oxidation. Through the CNC-micro-embossing, this micro-texture further transferred to micro-cavities in the aluminum sheet. The dimensional accuracy of embossed micro-textures by stamping was measured by SEM and three dimensional profilometer with comparison to the tailored micro-pattern and the DLC-punch array configuration.

Original languageEnglish
Title of host publicationTechnology of Plasticity
PublisherTrans Tech Publications Ltd
Pages161-166
Number of pages6
ISBN (Print)9783035713039
DOIs
Publication statusPublished - 2018 Jan 1
Event1st Asia Pacific Symposium on Technology of Plasticity, APSTP 2017 - Taichung, Taiwan, Province of China
Duration: 2017 Nov 222017 Nov 25

Publication series

NameMaterials Science Forum
Volume920 MSF
ISSN (Print)0255-5476

Other

Other1st Asia Pacific Symposium on Technology of Plasticity, APSTP 2017
CountryTaiwan, Province of China
CityTaichung
Period17/11/2217/11/25

    Fingerprint

Keywords

  • Aluminum sheets
  • Heat transfer
  • Micro-cavity textures
  • Micro-embossing
  • Multi DLC-punch assembly
  • Plasma oxidation
  • Plasma printing

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Aizawa, T., Wasa, K., Farghali, A., & Tamagaki, H. (2018). Plasma printing of micro-punch assembly for micro-embossing of aluminum sheets. In Technology of Plasticity (pp. 161-166). (Materials Science Forum; Vol. 920 MSF). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.920.161