Laser beam ablation of thick steel plates without affecting the material underneath

2018 ◽  
Author(s):  
Christian Hoff ◽  
Jörg Hermsdorf ◽  
Stefan Kaierle ◽  
Ludger Overmeyer
Keyword(s):  
Laser Beam ◽  
Steel Plates ◽  
Thick Steel

Dynamic observation of high speed laser-arc combination welding of thick steel plates

1997 ◽  
Author(s):  
Nobuyuki Abe ◽  
Yasushi Kunugita ◽  
Masakazu Hayashi ◽  
Yoshiaki Tsuchitani
Keyword(s):  
High Speed ◽  
Steel Plates ◽  
Dynamic Observation ◽  
Thick Steel

Laser forming of thick steel plates with a high power diode laser

2001 ◽  
Author(s):  
Abe Nobuyuki ◽  
Nakagawa Naoki ◽  
Tsukamoto Masahiro ◽  
Nakacho Keiji ◽  
Sogabe Michihiro ◽  
...  
Keyword(s):  
Diode Laser ◽  
High Power ◽  
Steel Plates ◽  
Laser Forming ◽  
Thick Steel ◽  
Power Diode ◽  
High Power Diode Laser

Formation of magnetic grating on steel plates by electron/laser beam irridaton

1989 ◽  
Author(s):  
KatsuyAra ◽  
H. Yagi ◽  
Hideo ◽  
Ikeda ◽  
Y. Sugiyama ◽  
...  
Keyword(s):  
Laser Beam ◽  
Steel Plates

Effect of Laser Beam Diameter on Cut Edge of Steel Plates Obtained by Laser Machining

2013 ◽  
Vol 467 ◽  
pp. 227-232 ◽  
Author(s):  
Imed Miraoui ◽  
Mouna Zaied ◽  
Mohamed Boujelbene
Keyword(s):  
Laser Beam ◽  
Laser Cutting ◽  
Steel Plates ◽  
Beam Diameter ◽  
Power Laser ◽  
Laser Beam Diameter ◽  
Machined Surface ◽  
Cut Edge ◽  
Thermal Influence ◽  
Cut Surface

Laser cutting is a thermal process which is used contactless to separate materials. In the present study, high-power laser cutting of steel plates is considered and the thermal influence of laser cutting on the cut edges is examined. The microstructure and the microhardness of the cut edge are affected by the input laser cutting parameter: laser beam diameter. The aim of this work is to investigate the effect of the laser beam diameter on the microhardness beneath the cut surface of steel plates obtained by CO2 laser cutting. The cut surface was studied based on microhardness depth profiles beneath the machined surface. The results show that laser cutting has a thermal effect on the surface microstructure and on the microhardness beneath the cut section. Also the microhardness of the hardening zone depends on the laser beam diameter.

Cutting of thick steel with fiber-delivered high-power Nd:YAG laser beam

2000 ◽  
Author(s):  
Takehiro Watanabe ◽  
Hiroyuki Kobayashi ◽  
Keiji Suzuki ◽  
Seiji Beppu
Keyword(s):  
Laser Beam ◽  
High Power ◽  
Nd:Yag Laser ◽  
Thick Steel

Analysis of Roughness and Heat Affected Zone of Steel Plates Obtained by Laser Cutting

2014 ◽  
Vol 974 ◽  
pp. 169-173 ◽  
Author(s):  
Imed Miraoui ◽  
Mohamed Boujelbene ◽  
Emin Bayraktar
Keyword(s):  
Surface Roughness ◽  
Laser Beam ◽  
Heat Affected Zone ◽  
Laser Power ◽  
Laser Cutting ◽  
Major Effect ◽  
Steel Plates ◽  
Beam Diameter ◽  
Laser Beam Diameter ◽  
Cut Surface

In the present study, high-power CO2 laser cutting of steel plates has been investigated and the effect of the input laser cutting parameters on the cut surface quality is analyzed. The average roughness of the cut surface of the specimens, produced by different laser beam diameter and laser power, were measured by using roughness tester. The scanning electron microscopy SEM is used to record possible metallurgical alterations on the cut edge. The aim of this work is to investigate the effect of laser beam diameter and laser power on the cut surface roughness and on the heat affected zone width HAZ of steel plates obtained by CO2 laser cutting. An overall optimization was applied to find out the optimal cutting setting that would improve the cut surface quality. It was found that laser beam diameter has a negligible effect on surface roughness but laser power had major effect on roughness. The cut surface roughness decreases as laser power increases. Improved surface roughness can be obtained at higher laser power. Also, laser beam diameter and laser power had major effect on HAZ width. It increases as laser power increases.

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