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Pulsed ND YAG laser parameter effect on welding uncoated Advanced High Strength Steel (AHSS) for automotive

Muhammad Naqiuddin, Mat Salleh and M., Ishak and Quazi, M. M. and Aiman, Mohd Halil and Yamasaki, Kazuhiko (2021) Pulsed ND YAG laser parameter effect on welding uncoated Advanced High Strength Steel (AHSS) for automotive. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 84 (1). pp. 91-100. ISSN 2289-7879

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Abstract

Pulse wave (PW) welding technique has become more adequate process to produce a deep penetration welding with smaller fusion zone and heat affected zone for automotive steel joint. A 1.6 mm thickness of N22CB boron steel from advance high strength steel (AHSS) type was welded by using PW mode from a low power Nd: YAG laser. The process parameters studied in this paper are pulsed energy, Ep, focal length, F, and welding speed, S. Bead-on-plate (BOP) welding was used in this experiment. The effect of parameters on the weld pool geometry was studied. Higher pulsed energy gives high weld penetration and higher weld width, contributing to the bigger weld pool size. Positive defocus position of focal length produces weld geometry with high penetration depth and smaller bead width compared to negative defocus position. Lower welding speed could produce deep penetration depth as the high heat input produced.

Item Type: Article
Uncontrolled Keywords: Low power laser; Pulse wave mode; Parameter effects
Subjects: T Technology > TG Bridge engineering
Faculty/Division: Faculty of Mechanical and Automotive Engineering Technology
Depositing User: Pn. Hazlinda Abd Rahman
Date Deposited: 22 Sep 2021 04:49
Last Modified: 22 Sep 2021 04:50
URI: http://umpir.ump.edu.my/id/eprint/30904
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