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

Laser absorption in high-power fiber laser welding of stainless steel and aluminum alloy

2008 ◽  
Author(s):  
Naoyuki Matsumoto ◽  
Yousuke Kawahito ◽  
Masami Mizutani ◽  
Seiji Katayama
Keyword(s):  
Stainless Steel ◽  
Aluminum Alloy ◽  
Laser Welding ◽  
Fiber Laser ◽  
High Power ◽  
Fiber Laser Welding ◽  
Laser Absorption

Dynamic keyhole behavior and keyhole instability in high power fiber laser welding of stainless steel

2019 ◽  
Vol 114 ◽  
pp. 1-9 ◽  
Author(s):  
Dabin Zhang ◽  
Meng Wang ◽  
Chengsong Shu ◽  
Yunfei Zhang ◽  
Dongsheng Wu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Laser Welding ◽  
Fiber Laser ◽  
High Power ◽  
Fiber Laser Welding ◽  
Keyhole Behavior

Observation of spatter formation mechanisms in high-power fiber laser welding of thick plate

2013 ◽  
Vol 280 ◽  
pp. 868-875 ◽  
Author(s):  
M.J. Zhang ◽  
G.Y. Chen ◽  
Y. Zhou ◽  
S.C. Li ◽  
H. Deng
Keyword(s):  
Laser Welding ◽  
Fiber Laser ◽  
High Power ◽  
Thick Plate ◽  
Formation Mechanisms ◽  
Fiber Laser Welding

Elucidation of Welding Stability Based on Keyhole Configuration during High-Power Fiber Laser Welding

2011 ◽  
Vol 314-316 ◽  
pp. 941-944 ◽  
Author(s):  
Xiang Dong Gao ◽  
Qian Wen ◽  
Seiji Katayama
Keyword(s):  
Laser Welding ◽  
Fiber Laser ◽  
High Power ◽  
Continuous Wave ◽  
High Energy ◽  
High Energy Density ◽  
Deep Penetration ◽  
Characteristic Parameters ◽  
Fiber Laser Welding ◽  
Welding Stability

During deep penetration laser welding, a keyhole is formed in the molten pool due to the intense recoil pressure of evaporation. The formation of the keyhole leads to a deep penetration weld with a high aspect ratio and this is the most advantageous feature of welding by high-energy-density beams. The configuration and characteristics of a keyhole are related to the welding stability. In a fiber laser butt-joint welding of Type 304 austenitic stainless steel plate with a high power 10 kW continuous wave fiber laser, an infrared sensitive high-speed video camera was used to capture the dynamic images of the molten pools. The configurations of a keyhole were analyzed through image processing techniques such as median filtering, wiener filtering and gray level threshold segmentation to obtain the edge of a keyhole. The width and the area of a keyhole were defined as the keyhole characteristic parameters, and the deviation between the laser beam and weld center as a parameter reflecting the welding stability. By analyzing the change of the keyhole characteristic parameters during welding process, it was found that these parameters were related to the welding stability. Welding experimental results and analysis of the keyhole characteristic parameters confirmed that the welding stability could be monitored and distinguished by a keyhole configuration during high-power fiber laser welding.

scholarly journals Effects of Laser-Induced Plume in High-Power Fiber Laser Welding with Long-Focal-Distance Focusing Optics

2011 ◽  
Vol 29 (1) ◽  
pp. 18-23 ◽  
Author(s):  
Yousuke KAWAHITO ◽  
Shinpei OIWA ◽  
Masami MIZUTANI ◽  
Seiji KATAYAMA
Keyword(s):  
Laser Welding ◽  
Fiber Laser ◽  
High Power ◽  
Fiber Laser Welding ◽  
Focal Distance

Effect of plume on weld penetration during high-power fiber laser welding

2016 ◽  
Vol 28 (2) ◽  
pp. 022003 ◽  
Author(s):  
Jianglin Zou ◽  
Wuxiong Yang ◽  
Shikai Wu ◽  
Yue He ◽  
Rongshi Xiao
Keyword(s):  
Laser Welding ◽  
Fiber Laser ◽  
High Power ◽  
Weld Penetration ◽  
Fiber Laser Welding

Control of the plume induced during high-power fiber laser welding with a transverse arc

2015 ◽  
Vol 12 (4) ◽  
pp. 046006 ◽  
Author(s):  
Shikai Wu ◽  
Jianglin Zou ◽  
Rongshi Xiao ◽  
Fei Li
Keyword(s):  
Laser Welding ◽  
Fiber Laser ◽  
High Power ◽  
Fiber Laser Welding
Sign in / Sign up

Export Citation Format

Share Document