Abstract
Weld induced distortion is often the most challenging problem in the manufacturing industry. When distortion exceeds a safe limit in the welded structure, misalignment of parts occurs, which generally requires costly corrective measures such as cold bending and flame straightening to lower the distortion to an acceptable limit, which also causes schedule delays. In this study, an attempt has been made to control the weld induced distortion with preheating of filler wire. Modified Submerged Arc Welding which is named as Advanced Submerged Arc Welding was selected for deposition of weld bead on the mild steel sheet. The experiments were performed by varying the preheat value of filler wire and the distortion value was recorded. Microstructure of all the samples were also captured and analyzed. Results show, that with increase in filler wire preheat, there is a reduction in weld induced distortion and also the microstructures reveal a better mechanical and metallurgical property of the weldment.
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