Investigation of optimum condition in oxygen gas-assisted laser cutting

被引:19
作者
Golnabi, H. [1 ]
Bahar, M. [2 ]
机构
[1] Sharif Univ Technol, Inst Water & Energy, Tehran, Iran
[2] Teacher Training Univ, Dept Phys, Tehran, Iran
关键词
Oxygen gas; Speed; Nd:YAG laser; ND-YAG LASER; STAINLESS-STEEL; MULTIOBJECTIVE OPTIMIZATION; SHEET;
D O I
10.1016/j.optlastec.2008.08.001
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Laser cutting characteristics including power level and cutting gas pressure are investigated in order to obtain an optimum kerf width. The kerf width is investigated for a laser power range of 50-170 W and a gas pressure of 1-6 bar for steel and mild steel materials. Variation of sample thickness, material type, gas pressure and laser power on the average cut width and slot quality are investigated. Optimum conditions for the steel and mild steel materials with a thickness range of 1-2 mm are obtained. The optimum condition for the steel cutting results in a minimum average kerf width of 0.2 mm at a laser power of 67 W, cutting rate of 7.1 mm/s and an oxygen pressure of 4 bar. A similar investigation for the mild steel cutting results in a minimum average kerf width of 0.3 mm at the same laser power of 67 W, cutting rate of 9.5 mm/s, and an oxygen pressure of I bar. The experimental average kerf is about 0.3 mm, which is approximately equal to the estimated focused beam diameter of 0.27 mm for our focusing lens (f = 4 cm and 100 W power). This beam size leads to a laser intensity of about 1.74 x 10(9) W/m(2) at the workpiece surface. The estimated cutting rate from theoretical calculation is about 8.07 mm/s (1.0 mm thickness and 100 W power), which agrees with the experimental results that is 7.1 mm/s for 1.0 mm thickness of mild steel at the laser power of 88 W. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:454 / 460
页数:7
相关论文
共 50 条
[31]   Investigation on cutting forces in ultrasonic vibration assisted milling of particle-reinforced titanium matrix composites (PTMCs) [J].
Huan, Haixiang ;
Xu, Wenqiang ;
Ding, Wenfeng ;
Zhu, Chilei ;
Zhao, Biao .
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE, 2024,
[32]   [INVITED] Laser gas assisted treatment of Ti-alloy: Analysis of surface characteristics [J].
Yilbas, B. S. ;
Ali, H. ;
Karatas, C. .
OPTICS AND LASER TECHNOLOGY, 2016, 78 :159-166
[33]   Experimental investigation into the electropulsing assisted pulsating gas forming of CP-Ti tubes [J].
Tang, Zejun ;
Chen, Jian ;
Dang, Kexin ;
Liu, Gang ;
Tao, Kemei .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2020, 278 (278)
[34]   An investigation on cutting mechanism and thermomechanical behaviors at tool-chip interface in ultrasonic vibration-assisted cutting of Ti6Al4V alloy [J].
Chen, Xuelin ;
Shao, Wen ;
Tang, Jinyuan ;
Hu, Bo .
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2023, 129 (7-8) :3027-3046
[35]   Investigation on disk and CO2 laser beam fusion cutting differences based on power balance equation [J].
Scintilla, Leonardo Daniele ;
Tricarico, Luigi ;
Wetzig, Andreas ;
Beyer, Eckhard .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2013, 69 :30-37
[36]   Dross formation modeling in the laser beam cutting process using energy-based and gas-based parameters [J].
Nabavi, Seyedeh Fatemeh ;
Farshidianfar, Mohammad Hossein ;
Farshidianfar, Anooshiravan ;
Marandi, Saeed .
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2022, 120 (11-12) :8169-8184
[37]   Cutting Properties of Austenitic Stainless Steel by Using Linear Polarized CO2 Laser without Assist Gas [J].
Ozaki, Hitoshi ;
Mima, Takahito ;
Kawakami, Hiroshi ;
Suzuki, Jippei .
THERMEC 2011, PTS 1-4, 2012, 706-709 :2228-2233
[38]   Experimental investigation of cutting performance for different material compositions of Cr/Ni-steel with 1 μm laser radiation [J].
Goppold, Cindy ;
Urlau, Franz ;
Pinder, Thomas ;
Herwig, Patrick ;
Lasagni, Andres F. .
JOURNAL OF LASER APPLICATIONS, 2018, 30 (03)
[39]   Laser gas assisted treatment of pre-prepared high strength low alloy steel surface [J].
Yilbas, B. S. ;
Akhtar, S. S. ;
Karatas, C. .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2011, 211 (07) :1268-1277
[40]   Efficient evolution mechanism of electrolytic gas products from laser-assisted electrolyte jet machining [J].
Yu, Mingxin ;
Du, Liqun ;
Du, Baoguo ;
Wang, Fenglai ;
Zhang, Ce ;
Li, Dong .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2024, 333