Cutting of Solid Type Molded Composite Materials by Q-switched Fiber Laser with High-Performance Nozzle

• OKAMOTO Yasuhiro

  Okayama University

• KITADA Ryoji

  TOWA Corporation

• UNO Yoshiyuki

  Okayama University

• DOI Hiroyuki

  Okayama University

Abstract

This paper deals with the effects of the nozzle shape on cutting results and fundamental characteristics of laser cutting of solid type molded composite materials, which was composed of semiconductor board and epoxy-resin molding compounds, by Q-switched single-mode fiber laser. Experimental results clarified that high speed cutting of 16 mm/s could be carried out using a Laval throat nozzle with initial expansion zone, which also led to straighter kerf shape and narrower kerf width than other nozzles. Besides, Laval throat nozzle made it possible to reduce the kerf width, and the difference of kerf width between irradiation-side and exit-side became smaller. Nitrogen assist gas led to the narrow kerf width and straight kerf shape. Furthermore, the difference of kerf between substrate side and epoxy-resin side became smaller. Substrate side irradiation was more suitable for precision cutting than epoxy-resin side irradiation. These results proved that Q-switched single-mode fiber laser was useful for cutting of composite materials.

Journal

• Journal of Advanced Mechanical Design, Systems, and Manufacturing

  Journal of Advanced Mechanical Design, Systems, and Manufacturing 2 (4), 651-660, 2008

  The Japan Society of Mechanical Engineers

Keywords

• Single Mode Fiber Laser
• High Performance Nozzle
• Solid Type Molding
• Micro Cutting
• Composite Material

Details

• CRID: 1390282680250066944
• NII Article ID: 130000080865
• DOI: 10.1299/jamdsm.2.651
• BIBCODE: 2008JAMDS...2..651O
• ISSN: 18813054
• Web Site: http://www.jstage.jst.go.jp/article/jamdsm/2/4/2_4_651/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed