Experimental investigation of transient temperature characteristic in high power fiber laser cutting of a thick steel plate

2016 ◽  
Vol 84 ◽  
pp. 134-143 ◽  
Author(s):  
Nguyen Phi Long ◽  
Yukihiro Matsunaga ◽  
Toshihide Hanari ◽  
Tomonori Yamada ◽  
Toshiharu Muramatsu
Keyword(s):  
Experimental Investigation ◽  
Fiber Laser ◽  
High Power ◽  
Laser Cutting ◽  
Steel Plate ◽  
Temperature Characteristic ◽  
Transient Temperature ◽  
Thick Steel

Improvement of cutting performance for thick stainless steel plates by step-like cutting speed increase in high-power fiber laser cutting

2018 ◽  
Vol 103 ◽  
pp. 311-317 ◽  
Author(s):  
Sangwoo Seon ◽  
Jae Sung Shin ◽  
Seong Yong Oh ◽  
Hyunmin Park ◽  
Chin-Man Chung ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Fiber Laser ◽  
High Power ◽  
Laser Cutting ◽  
Cutting Speed ◽  
Cutting Performance ◽  
Steel Plates ◽  
Speed Increase

High-power fiber laser welding of thick steel at low welding speed

2007 ◽  
Author(s):  
Xudong Zhang ◽  
Eiji Ashida ◽  
Seiji Katayama ◽  
Masami Mizutani ◽  
Yusuke Anma ◽  
...  
Keyword(s):  
Laser Welding ◽  
Fiber Laser ◽  
High Power ◽  
Welding Speed ◽  
Fiber Laser Welding ◽  
Thick Steel

scholarly journals The Latest Technology of Laser Cutting for Thick Steel Plate

2010 ◽  
Vol 79 (2) ◽  
pp. 136-145 ◽  
Author(s):  
Masayuki NAGAHORI ◽  
Shinji NUMATA ◽  
Yoshimi SANO
Keyword(s):  
Laser Cutting ◽  
Steel Plate ◽  
Thick Steel

Laser cutting of thick steel plates and simulated steel components using a 30 kW fiber laser

2015 ◽  
Vol 53 (6) ◽  
pp. 916-920 ◽  
Author(s):  
Koji Tamura ◽  
Ryoya Ishigami ◽  
Ryuichiro Yamagishi
Keyword(s):  
Fiber Laser ◽  
Laser Cutting ◽  
Steel Plates ◽  
Thick Steel

Experimental investigation of a high-power 1018  nm fiber laser using a 20/400  μm ytterbium-doped fiber

2019 ◽  
Vol 58 (4) ◽  
pp. 729 ◽  
Author(s):  
M. Lafouti ◽  
H. Latifi ◽  
H. Fathi ◽  
S. Ebrahimzadeh ◽  
S. Sarikhani ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Fiber Laser ◽  
High Power

Acoustic and Optical Monitoring of High-Power CO2 Laser Cutting

2007 ◽  
Vol 344 ◽  
pp. 161-168 ◽  
Author(s):  
Johan De Keuster ◽  
Joost R. Duflou ◽  
Jean Pierre Kruth
Keyword(s):  
High Power ◽  
Laser Cutting ◽  
Quality Parameters ◽  
Steel Plates ◽  
Cut Edge ◽  
Edge Roughness ◽  
Cut Quality ◽  
Dross Formation ◽  
Photodiode Signal ◽  
Thick Steel

In this paper, the development of a monitoring system for high-power CO2 laser cutting of thick steel plates (>15 mm) is reported. The aim of this system is to increase the robustness and autonomy of the laser cutting process of thick plates, which is still characterized by more narrow process windows compared to cutting of thin sheets. The applicability for monitoring purposes of two types of sensors is investigated: the acoustic microphone and the photodiode. For both types, correlation between the sensor output and the cut quality is investigated. Both contour cutting and piercing are covered in the study. The full penetration of the piercing can be monitored by both sensors. Furthermore quantitative relations between cut quality parameters and photodiode signal parameters could be determined: the mean level of the photodiode signal correlates well with the drag of the striations and dross formation, whereas the standard deviation proves to correlate well with the occurrence of burning defects and the cut edge roughness.

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