Development of Inner-Grooved Tubes by Dieless Micro-Forming with Laser-As-Sisted Air Pressure

Ching Min Cheng, Ming Zheng Tu, Tun Ping Teng, Shang Pang Yu, Cheng Yi Yu, Yu Tai Chang

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


Grooved tubes are widely used in electronic cooling modules. They are usuallt drawn, a term referring to molding. However, this process has limitations, especially in the production of smaller tubes. Therefore, this study examines the potential of an alternative process, dieless forming, in which the grooves on stainless steel are generated by pulsed laser-Assisted air pressure. To begin with, the stainless steel tube in ambient air was heated using a pulsed laser. Then, groove samples were sliced for observation using an optical microscope (OM). Finally, the samples were analyzed using Scanning Electronic Microscope (SEM). The results demonstrate that grooves can be formed utilizing dieless forming with pulsed laser-Assisted air pressure. The average observed depth of the grooves 208.5 um at 10-watt power and 0.01 Mpa gas pressure. In conclusion, grooves at a micro scale can be produced effectively by dieless forming for a range of industrial applications.

Original languageEnglish
Article number05007
JournalMATEC Web of Conferences
Publication statusPublished - 2017 Feb 9
Event3rd International Conference on Mechatronics and Mechanical Engineering, ICMME 2016 - Shanghai, China
Duration: 2016 Oct 212016 Oct 23

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Engineering(all)


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