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<p>Wire-arc additive manufacturing (WAAM) using the Gas Metal Arc Welding (GMAW) robotic welding process has advanced and gained more visibility in recent years due to the operational simplicity and lower acquisition and maintenance costs of its equipment for producing both simple and complex parts made of different metals and sizes. However, there are challenges to be overcome, such as increasing quality and reducing part production time. In this context, this article aims to contribute to both aspects by proposing and evaluating a compressed air cooling and cleaning device applied to the WAAM of carbon steel parts using the GMAW process with active gas and short circuit metal transfer. To this end, parallelepipeds with dimensions of 65.0 × 65.0 × 32.0&#xa0;mm were built using four different cooling technologies in order to compare production times and focusing on dimensional accuracy and discontinuities presence. From the analysis of the results obtained, it was concluded that of the four different technologies compared, compressed air cooling, which has the additional function of cleaning the silica islands, is the best option for use in WAAM, considering its superior quality and increased production efficiency.</p>

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Contributions of compressed air in the heat control and cleanness in wire arc additive manufacturing WAAM (DED-Arc)

  • 期刊论文

  • 发表日期：

    2026年3月26日

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  • Erwin Werner Teichmann,
  • Jorge Ricardo Bergmann Rzatki,
  • Nelso Gauze Bonacorso,
  • Rafael Nunes

摘要

Wire-arc additive manufacturing (WAAM) using the Gas Metal Arc Welding (GMAW) robotic welding process has advanced and gained more visibility in recent years due to the operational simplicity and lower acquisition and maintenance costs of its equipment for producing both simple and complex parts made of different metals and sizes. However, there are challenges to be overcome, such as increasing quality and reducing part production time. In this context, this article aims to contribute to both aspects by proposing and evaluating a compressed air cooling and cleaning device applied to the WAAM of carbon steel parts using the GMAW process with active gas and short circuit metal transfer. To this end, parallelepipeds with dimensions of 65.0 × 65.0 × 32.0 mm were built using four different cooling technologies in order to compare production times and focusing on dimensional accuracy and discontinuities presence. From the analysis of the results obtained, it was concluded that of the four different technologies compared, compressed air cooling, which has the additional function of cleaning the silica islands, is the best option for use in WAAM, considering its superior quality and increased production efficiency.