Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 168, Issue 3, Pages 478-487Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2005.03.001
Keywords
weld bead geometry; arc welding; fabrication
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To automate a welding process, which is the present trend in fabrication industry, it is essential that mathematical models have to be developed to relate the process variables to the weld bead parameters. Because of its high reliability, deep penetration, smooth finish and high productivity, submerged arc welding (SAW) has become a natural choice in industries for fabrication, especially for welding of pipes. Mathematical models have been developed for SAW of pipes using five level factorial techniques to predict three critical dimensions of the weld bead geometry and shape relationships. The models developed have been checked for their adequacy and significance by using the F-test and the t-test, respectively. Main and interaction effects of the process variables on bead geometry and shape factors are presented in graphical form and using which not only the prediction of important weld bead dimensions and shape relationships but also the controlling of the weld bead quality by selecting appropriate process parameter values are possible. (c) 2005 Elsevier B.V. All rights reserved.
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