544
A. Jadhav and S. Kumar
Table 6 Criteria for Optimization
Factor
Goal
Lower limit
Upper limit
Optimized value
A (W)
In range
5000
5500
5031.721
B (mm/min)
In range
210
230
210.025
C (bar)
In range
8
12
11.980
Dross height (mm)
Minimize
0.75
2.35
0.749
values. The measured values of input process parameter response variables are transformed to a free scale value between zero and one. It causes improvement in the corresponding response value to becomes more desirable [21]. Table 6 shows criteria for
optimization and its optimized values.
5 Conclusion
An experimental study on laser machining of AISI 304 has been performed to
minimize dross height formation. The following are the findings of the present work
(i) Cutting speed is most important input process parameter followed by laser
power along with the gas pressure to minimize dross height.
(ii) Dross height increases due to enhancement of cutting speed, and it decreases
as decrease in power of laser and gas pressure.
Further, a mathematical model has been developed for the prediction of dross
height. It has identified that model predictions have good agreement with experimental result values. Optimization of laser power, cutting speed, and gas pressure
has also been carried out to reduce dross height formation.
References
1. Parthibana A, Chandrasekaran M, Muthuraman V, Sathish S (2018) Optimization of CO 2 laser
cutting of stainless steel sheet for curved profile. Mater Today Proc 5:14531–14538
2. Akkurt A (2009) Surface properties of the cut face obtained by different cutting methods from
AISI 304 stainless steel materials. Indian J Eng Mater Sci 16:373–384
3. Ion JC (2005) Laser processing on engineering materials (principles procedure and industrial
application). Elsevier Butterworth-Heinemann, Burlington
4. Ghany KA, Newishy M (2005) Cutting of 1.2 mm thick austenitic stainless steel sheet using
pulsed and CW Nd-YAG laser. J Mater Process Technol 168:438–447
5. Sharma A, Yadava V (2018) Experimental analysis of Nd-YAG laser cutting of sheet
materials—a review. Opt Laser Technol 98:264–280
6. Juptner WP (2002) LIA handbook of laser materials processing. Optics Lasers Eng 38:608–610
7. Tessier, Brown W (1991) United States Patent No. US5073694
8. Chen K, Yao YL (2000) Process optimization in pulsed laser micromachining with applications
in medical device manufacturing. Int J Adv Manuf Technol 16:243–249
A. Jadhav and S. Kumar
Table 6 Criteria for Optimization
Factor
Goal
Lower limit
Upper limit
Optimized value
A (W)
In range
5000
5500
5031.721
B (mm/min)
In range
210
230
210.025
C (bar)
In range
8
12
11.980
Dross height (mm)
Minimize
0.75
2.35
0.749
values. The measured values of input process parameter response variables are transformed to a free scale value between zero and one. It causes improvement in the corresponding response value to becomes more desirable [21]. Table 6 shows criteria for
optimization and its optimized values.
5 Conclusion
An experimental study on laser machining of AISI 304 has been performed to
minimize dross height formation. The following are the findings of the present work
(i) Cutting speed is most important input process parameter followed by laser
power along with the gas pressure to minimize dross height.
(ii) Dross height increases due to enhancement of cutting speed, and it decreases
as decrease in power of laser and gas pressure.
Further, a mathematical model has been developed for the prediction of dross
height. It has identified that model predictions have good agreement with experimental result values. Optimization of laser power, cutting speed, and gas pressure
has also been carried out to reduce dross height formation.
References
1. Parthibana A, Chandrasekaran M, Muthuraman V, Sathish S (2018) Optimization of CO 2 laser
cutting of stainless steel sheet for curved profile. Mater Today Proc 5:14531–14538
2. Akkurt A (2009) Surface properties of the cut face obtained by different cutting methods from
AISI 304 stainless steel materials. Indian J Eng Mater Sci 16:373–384
3. Ion JC (2005) Laser processing on engineering materials (principles procedure and industrial
application). Elsevier Butterworth-Heinemann, Burlington
4. Ghany KA, Newishy M (2005) Cutting of 1.2 mm thick austenitic stainless steel sheet using
pulsed and CW Nd-YAG laser. J Mater Process Technol 168:438–447
5. Sharma A, Yadava V (2018) Experimental analysis of Nd-YAG laser cutting of sheet
materials—a review. Opt Laser Technol 98:264–280
6. Juptner WP (2002) LIA handbook of laser materials processing. Optics Lasers Eng 38:608–610
7. Tessier, Brown W (1991) United States Patent No. US5073694
8. Chen K, Yao YL (2000) Process optimization in pulsed laser micromachining with applications
in medical device manufacturing. Int J Adv Manuf Technol 16:243–249