The influence of assist gas on the mechanism of material ejection and removal during laser percussion drilling

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture

Volumn 214, Issue 7, 2000, Pages 521-527

  Low, D K Y ^a   Li, L ^a   Corfe, A G ^b  

^a UNIVERSITY OF MANCHESTER   (United Kingdom)

^b ROLLS ROYCE PLC   (United Kingdom)

Author keywords

Assist gas; Laser drilling; Material ejection; Nd:YAG laser; Recast layer; Spatter

Indexed keywords

ARGON; COOLING; LASER BEAM CUTTING; NEODYMIUM LASERS; OXYGEN; SHEET METAL;

LASER PERCUSSION DRILLING;

DRILLING;

EID: 0033666938     PISSN: 09544054     EISSN: None     Source Type: Journal    
DOI: 10.1243/0954405001518215     Document Type: Article

References (20)

1. Patel, R. S. and Brewster, M. Q. Gas-assisted laser-metal drilling: experimental results. J. Thermophysics, 1991, 5(1), 26-31.
2. Allmen, Mv. and Blatter, A. Laser beam Interactions with Materials, 1994 (Springer-Verlag, Berlin).
3. Dabby, F. W. and Paek, U. C. High-intensity laser induced vaporization and explosion of solid material. IEEE J. Quantum Electronics, 1972, QE-8(2), 106-111.
4. Yilbas, B. S. and Sami, M. Liquid ejection and possible nucleate boiling mechanisms in relation to the laser drilling process. J. Phys. D: Appl. Phys., 1997, 30, 1996-2005.
5. Wei, P. S. and Chiau, L. R. Molten metal flow around the base of a cavity during a high-energy beam penetrating process. Int. J. Heat Transfer, 1988, 110, 918-923.
6. Yilbas, B. S. Experimental study into ejected materials during laser-metal interaction at subatmospheric pressures of drilling ambients. Doga Turkish J. Engng Environmental Sci., 1988, 12(1), 68-73.
7. Heglin, L. M. Laser drilling. In The Industrial Laser Annual Handbook (Eds D. Belforte and M. Levitt), 1986, pp. 116-120 (Penn Well, Tulsa, Oklahoma).
8. Patel, R. S. and Brewster, M. Q. Effect of oxidation and plume formation on low power Nd:YAG laser metal interaction. Trans. ASME, J. Heat Transfer, 1990, 112, 170-177.
9. Low, D. K. Y., Li, L. and Corfe, A. G. Effects of assist gas on the spatter physical characteristics during laser percussion drilling of NIMONIC 263 alloy. Appl. Surf. Sci., 2000, 154, 689-695.
10. Low, D. K. Y., Li, L. and Corfe, A. G. Characteristics of spatter formation under the effects of different process parameters during laser drilling. In Proceedings of International AMPT '99 Symposium on Manufacturing Processes, Dublin, 1999, Vol. 1, pp. 457-466 (Dublin City University, Dublin).
11. Wallis, P. B. Applications. In The Nimonic Alloys (Eds W. Betteridge and J. Heslop), 1974 (J.W. Arrowsmith, Bristol).
12. Brandes, E. A. and Brook, G. B. (Eds) Smithells Metals Reference Book, 1992 (Butterworths-Heinemann, Oxford).
13. 2 shielding gas effects in laser welding mild steel. J. Laser Applies, 1994, 6, 69-80.
14. Allmen, M. V. Laser drilling velocity in metals. J Appl. Phys., 1976, 47(12), 5460-5463.
15. Ganesh, R. K., Bowley, W. W., Bellantone, R. R. and Hahn, Y. A model for laser hole drilling in metals. J. Computational Phys., 1996, 125, 161-176.
16. Easterling, K. Introduction to the Physical Metallurgy of Welding, 1983 (Butterworths-Heinemann, Oxford).
17. Bauerle, D. Laser Processing and Chemistry, 1996 (Springer-Verlag, Berlin).
18. Steen, W. M. Laser Material Processing, 1998 (Springer-Verlag, London).
19. Draper, C. W. and Poate, I. M. Laser surface alloying. Int. Metal Rev., 1985, 30, 85.
20. Chan, C., Mazumder, J. and Chen, M. M. A two-dimensional transient model for convection in a laser melted pool. Metall. Trans. A, 1984, 15(12), 2175-2184.