Abstract
To break through the limits of the focused spot diameter to achieve holes with smaller diameter, a method is proposed by using a sieve plate or a cover plate. The experiments were conducted on 2-mm-thick stainless steel workpieces by using a millisecond pulsed laser. Four variables including pulse frequency, focal plane position, sieve diameter, and distance were chosen as the parameter variables. The entrance and exit diameters were measured with a confocal microscope. And, the taper was calculated. The results show that the focal plane position and distance were significant influencing factors. Negative focal plane position and a short distance could get smaller-diameter holes with lower taper. However, the pulse frequency had no significant influence on the entrance diameter and taper. A small sieve diameter was useful to get smaller-diameter holes with lower taper; however, it needed to apply a thicker cover plate to obtain a small diameter hole. The smallest holes obtained by using a sieve plate or a cover plate were at least 10 % less than the focused spot diameter and 20 % less than the diameter by laser directly drilling.
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References
Mishra S, Yadava V (2015) Laser beam micromachining (LBMM)—a review. Opt Lasers Eng 73:89–122
Ganguly D, Acherjee B, Kuar AS, Mitra S (2012) Hole characteristics optimization in Nd:YAG laser micro-drilling of zirconium oxide by grey relation analysis. Int J Adv Manuf Technol 61:1255–1262
Biswas R, Kuar AS, Sarkar S, Mitra S (2010) A parametric study of pulsed Nd:YAG laser micro-drilling of gamma-titanium aluminide. Opt Laser Technol 42(1):23–31
Zhang YM, Shen ZH, Li XW (2014) Modeling and simulation on long pulse laser drilling processing. Int J Heat Mass Transf 73:429–437
Wang XD, Michalowski A, Walter D, Sommer S, Kraus M, Liu JS, Dausinger F (2009) Laser drilling of stainless steel with nanosecond double-pulse. Opt Laser Technol 41(2):148–153
Ghoreishi M (2006) Statistical analysis of repeatability in laser percussion drilling. Int J Adv Manuf Technol 29:70–78
Arrizubieta I, Lamikiz A, Martinez S, Ukar E, Tabernero I, Girot F (2013) Internal characterization and hole formation mechanism in the laser percussion drilling process. Int J Mach Tools Manuf 75:55–62
Yan YZ, Ji LF, Bao Y, Jiang YJ (2012) An experimental and numerical study on laser percussion drilling of thick-section alumina. J Mater Process Technol 212:1257–1270
Leitz KH, Redlingshöfer B, Reg Y, Otto A, Schmidt M (2011) Melt ablation with short and ultrashort laser pulses. Phys Procedia 12:230–238
Voisey KT, Kudesia SS, Rodden WSO, Hand DP, Jones JDC, Clyne TW (2003) Melt ejection during laser drilling of metals. Mater Sci Eng A356:414–424
Kayukov SV, Gusev AA, Zaichikov EG, Petrov AL (1998) Drilling of narrow holes in metals by millisecond pulses of Nd:YAG lasers. Nov Methods Laser Technol 8(2):527–531
Yao KC, Lin J (2013) The characterization of the hole-contour and plume ejection in the laser drilling with various inclination angles. Opt Laser Technol 48:110–116
Cui CY, Cui XG, Zhao Q, Hu JD, Liu YH, Wang YM (2012) Investigation of different surface morphologies formed on AISI 304 stainless steel via millisecond Nd:YAG pulsed laser oxidation. Opt Laser Technol 44:815–820
Cheng J, Perrie W, Sharp M, Edwardson SP, Semaltianos NG, Dearden G, Watkins KG (2009) Single-pulse drilling study on Au, Al and Ti alloy by using a picosecond laser. Appl Phys A Mater Sci Process 95:739–746
Teng SY, Zhou TJ, Cheng CF (2007) Fresnel diffraction of truncated Gaussian beam. Optik 118:435–439
Duan WQ, Wang KD, Dong X, Mei XS, Wang WJ, Fan ZJ (2015) Experimental characterizations of burr deposition in Nd:YAG laser drilling: a parametric study. Int J Adv Manuf Technol 76(9–12):1529–1542
Tunna L, Keams A, O’Neill W, Sutcliffe CJ (2001) Micromachining of copper using Nd:YAG laser radiation at 1064, 532, and 355 nm wavelengths. Opt Laser Technol 33:135–143
Walther K, Brajdic M, Kreutz EW (2008) Enhanced processing speed in laser drilling of stainless steel by spatially and temporally superposed pulsed Nd:YAG laser radiation. Int J Adv Manuf Technol 35:895–899
Biswas R, Kuar AS, Biswas KS, Mitra S (2010) Characterization of hole circularity in pulsed Nd:YAG laser micro-drilling of TiN–Al2O3 composites. Int J Adv Manuf Technol 51:983–994
Bharatish A, Narasimha Murthy HN, Anand B, Madhusoodana CD, Praveena GS, Krishna M (2013) Characterization of hole circularity and heat affected zone in pulsed CO2 laser drilling of alumina ceramics[J]. Opt Laser Technol 55:22–32
Ghoreishi M, Low DKY, Li L (2002) Comparative statistical analysis of hole taper and circularity in laser percussion drilling. Int J Mach Tools Manuf 42:985–995
Ng GKL, Li L (2003) Repeatability characteristics of laser percussion drilling of stainless-steel sheets. Opt Laser Eng 39:25–33
Romoli L, Rashed CAA, Lovicu G, Dini G, Tantussi F, Fuso F, Fiaschi M (2014) Ultrashort pulsed laser drilling and surface structuring of microholes in stainless steels. CIRP Ann Manuf Technol 63:229–232
Volpp J, Vollertsen F (2013) Analytical modeling of the keyhole including multiple reflections for analysis of the influence of different laser intensity distributions on keyhole geometry. Phys Procedia 41:460–468
Tokarev VN, Lopez J, Lazare S, Weisbuch F (2003) High-aspect-ratio microdrilling of polymers with UV laser ablation: experiment with analytical model. Appl Phys A Mater Sci Process 76:385–396
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Geng, Y., Wang, K., Dong, X. et al. Laser drilling of micro-holes with small diameter beyond the limits of focused spot by using a sieve plate or a cover plate. Int J Adv Manuf Technol 87, 2471–2484 (2016). https://doi.org/10.1007/s00170-016-8643-z
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DOI: https://doi.org/10.1007/s00170-016-8643-z