Optimization of weld bead geometry for stainless steel cladding deposited by GMAW.
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American Journal of Engineering Research (AJER)
Abstract
The cladded components quality always depends on clad bead geometry and coefficient of shape of
welds and dilution. In order to obtain better quality, good corrosion resistant properties and to reduce
manufacturing costs the bead parameters must be optimized. The above objectives can be achieved by
developing mathematical equations to predict bead geometry. This paper presents central composite rotatable
design with full replication technique was used to obtain four critical dimensions of bead geometry. The
developed models have been checked for adequacy and significance. The experiments were conducted by
depositing Type ER-308L stainless steel wire on to IS-2062 structural steel plates. The results of confirmation
experiments showed that the developed models can be able to predict bead geometry with reasonable accuracy.
This study proved that both direct and interaction effect plays a major role in determining bead dimensions and
dilution. The process parameters were optimized using response surface methodology (RSM).
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Keywords
GMAW, Weld bead geometry, RSM, Mathematical equations, stainless steel.