Heat Absorbing Rate in Laser Drilling of YG8 Alloy

Abstract:

Based on a principle of laser drilling size and the roundness copied with respect of laser spatial mode, heat absorbing rate for laser drilling of YG8 is presented in theory and application. The mathematical models are then developed. The relationship of heat absorbing rate compared to the original absorbing rate is thus derived that is A = T +A0. It shows that heat absorbing rate to laser beam increases linearly with drilling temperature. The research outcome is used to optimize preheating process in which the novel method improves laser drilling precision from 0.03mm of primitive laser system to 0.01mm under the condition of heat absorbing.

• Periodical: Advanced Materials Research (Volumes 97-101)
• Pages: 4164-4167
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.97-101.4164
• Online since: March 2010
• Authors: Xu Yue Wang, Wen Ji Xu, Lian Ji Wang, Jun Wang, Yan De Liang
• Keywords: Hard Alloy, Heat Absorbing Rate, Laser Drilling, Preheating, Spatial Mode

References

[1] N. Rajendran, M. -B Pate, Heat Transfer Division Vol. 104/1(1998), p.121.

[2] R. Neimeyer, R. -N Smith, D. -A Kaminski, J. of Engineering for Industry Vol. 115/1(1996), p.359.

[3] W. -K Hamoudi, Inter. J. for Joining of Materials Vol. 9/1(1996), p.31.

[4] P. He, and M. Lallemand, J. Heat Transfer Vol. 113( 1991), p.166.

[5] N. Rajaram, J. Sheikh-Ahmad, S. -H Cheraghi, Inter. J. of Machine Tools and Manufacture, Vol. 43(2003), p.351.

[6] C. -Y. Ho, M. -Y Wen, J. of Materials Processing Technology Vol. 145/1(2004), p.303.

[7] Y. Li, P. William, Optics and Lasers in Engineering Vol. 35(2001), p.371.

[8] X.Y. Wang, J. of Laser and its new achievements Vol. 12/9(1997), p.9.

[9] X.Y. Wang, J. of Dalian University of Technology Vol. 36/6(2006), p.687.

[10] X.Y. Wang, J. of Dalian University of Technology Vol. 33/3(2003), p.317.