Infrared and Laser Engineering, Volume. 53, Issue 11, 20240430(2024)
Experimental study on femtosecond laser processing non-taper microholes in nickel-based alloys (cover paper·invited)
Figures & Tables(12)
Fig. 2. Schematic diagram of laser processing hole pattern under different angles of the A-axis deflection of the machine tool. (a) Positive taper; (b) No taper; (c) Negative taper
Fig. 3. Microhole machining results with different defocus amounts. (a) Entrance; (b) Exit; (c) Diameter; (d) Taper
Fig. 4. Microhole machining results at different repetition frequency. (a) Entrance; (b) Exit; (c) Diameter; (d) Taper
Fig. 5. Microhole machining results at different scanning radius. (a) Entrance; (b) Exit; (c) Diameter; (d) Taper
Fig. 6. Microhole machining results at different amount of
Fig. 7. The picture of blow-assisted processing. (a) Schematic diagram; (b) Physical image
Fig. 8. 6 mm through-hole machining results. (a) Entrance; (b) Exit; (c) CT image of pore topography
Table 1. Inconel718 main chemical composition
View tableView in ArticleTable 1. Inconel718 main chemical composition
Element Content Ni 52.49% Cr 19.31% Fe 18.84% Nb 4.95% Mo 2.95%
Table 2. Infrared femtosecond laser parameters
View tableView in ArticleTable 2. Infrared femtosecond laser parameters
Working characteristics Value Wavelength/nm 1030 Pulse width/fs 290 Average power/W 0-20 Pulse energy/μJ 0-200 Repetition frequency/kHz 0-100 Polarization state Linear polarization
Table 3. Single-hole machining scheme for 6 mm thick materials
View tableView in ArticleTable 3. Single-hole machining scheme for 6 mm thick materials
Serial number Defocusing amount/mm Processing time/min 1 −2 4 2 −4 6 3 −6 8
Table 4. Single-hole machining parameters for 6 mm thick materials
View tableView in ArticleTable 4. Single-hole machining parameters for 6 mm thick materials
Machining parameters Value Pulse energy/μJ 200 Repetition frequency/kHz 100 Scanning speed/mm·s−1 100 Scanning radius/μm 200 Fill spacing/μm 200 The yaw angle of the A-axis/(°) 6 Workpiece rotation speed/r·min−1 30
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Shuyuan ZHANG, Xijie ZHOU, Jianlei CUI, Runze FAN, Herui XIE, Xuesong MEI. Experimental study on femtosecond laser processing non-taper microholes in nickel-based alloys (cover paper·invited)[J]. Infrared and Laser Engineering, 2024, 53(11): 20240430
Paper Information
Category: Special issue—Laser precision manufacturing technology
Received: Sep. 24, 2024
Accepted: --
Published Online: Dec. 13, 2024
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