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Effect of Process Parameters on Weld Penetration Shape Factor in ASAW Based Surfacing

Hari Om, Sunil Pandey

Control of bead geometry and dilution is of utmost importance during overlay cladding. Bead geometry is decided by its Width, Reinforcement and Penetration depth. Weld penetration shape factor (WPSF) is another term that provides the information about penetration pattern. Many high deposition arc welding processes are in use for cladding and surfacing for decades but dilution remains more or less a problem while using these processes. In the present work, advance submerged arc welding (ASAW), a relatively improved process has been used for cladding AISI 308L stainless steel over mild steel substrate plate to study the effect of ASAW parameters on WPSF. Mathematical equation has been developed using response surface methodology (RSM) to predict WPSF in terms of ASAW parameters. During the analysis, it was found that wire feed rate, open circuit voltage and preheating current affect significantly WPSF.