Micro-pattern imprinting onto aluminum thin sheet by CNC-controlled stamping

Tatsuhiko Aizawa, Tatsuya Fukuda

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

3 Citations (Scopus)

Abstract

Table-top CNC stamping system was developed to make fine precise forming onto thin work-sheet. Micro-embossing process was employed to investigate the imprinting behavior during precise stamping for various film thicknesses. A micro-patterned die was prepared by chemical etching and oxygen-plasma etching method. The protective DLC coating of tool steels was directly etched to have fine embossing pattern. This micro-patterned die unit was inserted into a cassette mold-die for stamping test. Aluminium sheets with the purity of 99.9 % and the thickness of 80 μm were employed as a thin film work-sheet in order to describe the imprinting behavior. Scanning electron microscope, laser microscope and laser profilometers were utilized to characterize the imprinted geometry onto these film sheets. Micro-grooving pattern was successfully imprinted onto DLC coating by oxygen plasma etching for various grooving widths from 3 to 100 μm and grooving pitches from 7 μm to 200 μm. Aluminium sheet with the aligned, square-wedged patterns was succesfully fabricated, asiming at the heat-radiation device.

Original languageEnglish
Title of host publicationProceedings of the 14th International Conference on Metal Forming, METAL FORMING 2012
PublisherWiley-VCH Verlag
Pages739-742
Number of pages4
VolumeSPL. ISSUE
ISBN (Print)9783514007970
Publication statusPublished - 2012 Jan 1
Event14th International Conference on Metal Forming, METAL FORMING 2012 - Krakow, Poland
Duration: 2012 Sep 162012 Sep 19

Conference

Conference14th International Conference on Metal Forming, METAL FORMING 2012
CountryPoland
CityKrakow
Period12/9/1612/9/19

Keywords

  • Aluminium thin sheet
  • CNC-controlled stamping
  • Micro-pattern

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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