Research Article Open Access

Experimental Investigation on Micro-Welding of Thin Stainless Steel Sheet by Fiber Laser

Mohd Idris Shah Ismail1, Yasuhiro Okamoto2, Akira Okada2 and Yoshiyuki Uno2
  • 1 , Afganistan
  • 2 ,
American Journal of Engineering and Applied Sciences
Volume 4 No. 3, 2011, 314-320

DOI: https://doi.org/10.3844/ajeassp.2011.314.320

Submitted On: 18 February 2011
Published On: 18 August 2011

How to Cite: Ismail, M. I. S., Okamoto, Y., Okada, A. & Uno, Y. (2011). Experimental Investigation on Micro-Welding of Thin Stainless Steel Sheet by Fiber Laser. American Journal of Engineering and Applied Sciences, 4(3), 314-320. https://doi.org/10.3844/ajeassp.2011.314.320

Abstract

Problem statement: The miniaturization of components plays an important role for manufacturing in electrical and electronic industries. The joining technology of thin metal sheets has been strongly required. Laser welding with micro-beam and high-speed scanning is a promising solution in micro-welding, because it has high-potential advantages in welding heat sensitive components with precise control of heat input and minimal thermal distortion. Approach: In this study, the characteristics of laser micro-welding of thin stainless steel sheets by using a single-mode CW fiber laser with high-speed scanning system were experimentally investigated. Results: It was clarified that the welding bead width and depth increased with increasing the scanning velocity under a constant energy density condition and high efficient welding was expected by using high-speed laser scanning with Galvano scanner. The utilization of shielding gas was very effective to obtain smooth fusion bead and the combination of micro beam spot and high-speed laser scanning made it possible to obtain good overlap welding of ultra-thin stainless steel sheets. Conclusion: A faster and high quality welding could be achieved by using a single-mode fiber laser with micro-beam and high-speed scanning.

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Keywords

  • Micro-beam
  • high-speed scanning
  • single-mode fiber laser
  • Galvano scanner