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Effect of laser-welding parameters on the heat input and weld-bead profile

Olabi, Abdul and Benyounis, Khaled and Hashmi, Saleem (2005) Effect of laser-welding parameters on the heat input and weld-bead profile. Journal of Materials Processing Technology, 164-165 . pp. 978-985. ISSN 0924-0136

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Abstract

Laser butt-welding of medium carbon steel was investigated using CW 1.5 kW CO2 laser. The effect of laser power (1.2 - 1.43 kW), welding speed (30 - 70 cm/min) and focal point position (-2.5 - 0 mm) on the heat input and the weld-bead geometry (i.e. penetration (P), welded zone width (W) and heat affected zone width (WHAZ)) was investigated using Response Surface Methodology (RSM). The experimental plan was based on Box-Behnken design. Linear and quadratic polynomial equations for predicting the heat input and the weld-bead geometry were developed. The results indicate that the proposed models predict the responses adequately within the limits of welding parameters being used. It is suggested that regression equations can be used to find optimum welding conditions for the desired criteria.

Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:Laser welding; RSM; weld-bead profile
Subjects:Engineering > Mechanical engineering
Engineering > Production engineering
DCU Faculties and Centres:UNSPECIFIED
Publisher:Elsevier
Official URL:http://dx.doi.org/10.1016/j.jmatprotec.2005.02.060
Copyright Information:© 2005 Elsevier Ltd.
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:16049
Deposited On:12 May 2011 12:00 by Abdul Olabi. Last Modified 12 May 2011 12:00

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