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The Prevention of The Longitudinal Deformation due to Fillet Welding by using Induction Heating  

Park Jeong-Ung (Dept. of Civil Engineering, Chosun University)
Chang Kyong-Ho (Dept. of Civil & Environmental Engineering, Chungang University)
Lee Hae-Woo (Hanjin Heavy Industries, HHIC Technology Institute)
An Gyu-Baek (Welding Research Part of Samsung Heavy Industries)
Publication Information
Journal of Welding and Joining / v.23, no.3, 2005 , pp. 47-53 More about this Journal
Abstract
Longitudinal deformation is produced by fillet welding during the fabrication of built-up beams and decreases productivity and quality because it needs an extra correcting process. The deformation is caused by welding moment, which is the value multiplied the welding shrinking farce by the distance from the neutral axis. This welding moment can be offset by generating a moment in the same magnitude and in an opposite direction by induction heating. The location and quantity of the induction heating are decided via experiments and simple equations. This study, first, clarifies the creation mechanism of the longitudinal deformation with FEM analysis. Then, we presents the preventive method of this deformation by induction heating basing on the mechanism and verifies its validity through analysis and experiments.
Keywords
Longitudinal deformation; Built-Up beam; Induction heating; Welding moment;
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