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http://dx.doi.org/10.3795/KSME-A.2004.28.2.165

Butt Welding Characteristics of Austenitic 304 Stainless Steel Using a Continuous Wave Nd:YAG Laser Beam  

Yoo, Young-Tae (조선대학교 기전공학과)
Oh, Yong-Seok (조선대학교 대학원)
Shin, Ho-Jun (조선대학교 대학원)
Im, Kie-Gon (전남대학교 물리학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.28, no.2, 2004 , pp. 165-173 More about this Journal
Abstract
Laser beam welding is increasingly being used in welding of structural steels. The laser welding process is one of the most advanced manufacturing technologies owing to its high speed and deep penetration. The thermal cycles associated with laser welding are generally much faster than those involved in conventional arc welding processes, leading to a rather small weld zone. Experiments are performed for 304 stainless steel plates changing several process parameters such as laser power, welding speed, shielding gas flow rate, presence of surface pollution, with fixed or variable gap and misalignment between the similar and dissimilar plates, etc. The following conclusions can be drawn that laser power and welding speed have a pronounced effect on size and shape of the fusion zone. Increase in welding speed resulted in an increase in weld depth/ aspect ratio and hence a decrease in the fusion zone size. The penetration depth increased with the increase in laser power.
Keywords
Laser Welding; Butt Welding; Aspect Ratio; Spot Size; Focal Position; Welding Speed;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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