Experiment on Intermittent Gas Jet Assisted Modulated Fiber Laser Drilling

Abstract:

In this paper, intermittent gas jet assisted laser drilling on stainless steel (SUS304) with a fiber laser of wavelength 1090 nm is studied. Compared with the conventionally used continuous gas jets in assisting laser drilling, the intermittent gas jet assisting can effectively increase the material removal rate. The intermittent gas jet can be modulated with the frequency to effectively reduce the over-cooling effect by the assist gas. Experimental result shows that the drilling depth and machining time can be improved. The effects of the intermittent gas jet pressures and the synchronicity of gas and laser pulses on the laser drilling are investigated and discussed. It is observed that the intermittent gas jet method obviously reduces heat loss and increases the machining efficiency during the laser drilling. Compared with result of using the continuous gas jet, laser drilling with the intermittent gas jet at 40 Hz increases the drilling depth with an improvement of 10%. It is worth noting that the intermittent gas jet method can also reduce the quantity and cost of gas while the gases such as helium and argon gases are applied.

• Periodical: Applied Mechanics and Materials (Volumes 479-480)
• Pages: 91-95
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.479-480.91
• Online since: December 2013
• Authors: Jin Chen Hsu, Cheng Yun Liao, Chao Ching Ho, Yuan Jen Chang, Chia Lung Kuo
• Keywords: Intermittent Gas Jet, Laser Drilling, Modulated Fiber Laser

References

[1] R. Biswas, A. S. Kuar, S. Sarkar and S. Mitra: Opt. Laser Tech. Vol. 42 (2010), p.23.

[2] S. Bandyopadhyay et. al.: Opt. Laser Eng. Vol. 43 (2005), p.163.

[3] E. Kacar et. al.: J. Mater. Processing Tech. Vol. 209 (2009), p. (2008).

[4] M. Ghoreishi, D. K. Y. Low and L. Li: Int. J. Mach. Tools Manuf. Vol. 42 (2002), p.985.

[5] D. K. Y. Low, L. Li and A.G. Corfe: Appl. Surf. Sci. Vol. 154–155 (2000), p.689.

[6] J. Gurauskis et. al.: J. Euro. Ceram. Soc. Vol. 28 (2008), p.2673.

[7] A. S. Kuar, B. Doloi and B. Bhattacharyya: Int. J. Mach. Tools Manuf. Vol. 46 (2006), p.1301.

[8] D. K. Y. Low, L. Li, A.G. Corfe and P.J. Byrd: Int. J. Mach. Tools Manuf. Vol. 41 (2001), p.361.

[9] H. K. Sezer, L. Li and S. Leigh: Int. J. Mach. Tools Manuf. Vol. 49 (2009), p.1126.

[10] A. H. Khan et. al.: Opt. Laser Eng. Vol. 45 (2007), p.709.

[11] D. Y. Tsai and J. Lin: Opt. Laser Tech. Vol. 39 (2007), p.219.

[12] K. Chen, Y. L. Yao and V. Modi: J. Manuf. Sci. Eng. Vol. 122 (2000), p.429.

[13] A. H. Khan et. al.: Opt. Laser Eng. 44 (2006), p.826.