Numerical analysis on the effect of process
parameters on deposition geometry in wire
arc additive manufacturing |
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Affiliation: | State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering,
Xi'an Jiaotong University, Xi'an 710049, People's Republic of China |
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Abstract: | Here we develop a two-dimensional numerical model of wire and arc additive manufacturing
(WAAM) to determine the relationship between process parameters and deposition geometry,
and to reveal the influence mechanism of process parameters on deposition geometry. From the
predictive results, a higher wire feed rate matched with a higher current could generate a larger
and hotter droplet, and thus transfer more thermal and kinetic energy into melt pool, which
results in a wider and lower deposited layer with deeper penetration. Moreover, a higher preheat
temperature could enlarge melt pool volume and thus enhance heat and mass convection along
both axial and radial directions, which gives rise to a wider and higher deposited layer with
deeper penetration. These findings offer theoretical guidelines for the acquirement of acceptable
deposition shape and optimal deposition quality through adjusting process parameters in
fabricating WAAM components. |
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Keywords: | additive manufacturing arc plasma process parameter deposition geometry numerical analysis |
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