TY - CONF A1 - Sproesser, Gunther A1 - Pittner, Andreas A1 - Rethmeier, Michael A1 - Chang, Y.-J. A1 - Finkbeiner, M. T1 - Energy efficiency and environmental impacts of high power gas metal arc welding N2 - Single wire Gas Metal Arc Welding (SGMAW) and high power Tandem GMAW (TGMAW) are evaluated with respect to energy efficiency. The key performance indicator Electrical Deposition Efficiency is applied to reflect the energy efficiency of GMAW in different material transfer modes. Additionally, the wall-plug efficiency of the equipment is determined in order to identify the overall energy consumption. The results show that energy efficiency as well as economic process performance can be significantly increased by application of tandem processes. A comparative Life Cycle Assessment of a 30 mm thick weld is conducted to investigate the influences of the energy efficiency on the environmental impacts. Environmental burdens in the categories Global Warming Potential, Acidification Potential, Eutrophication Potential and Photochemical Ozone Creation Potential can be reduced up to 11% using an energy efficient TGMAW process T2 - IIW Intermediate Meeting Commission I, IV, XII / SG 212 CY - Genova, Italy DA - 07.03.2016 KW - Life cycle assessment (LCA) KW - Energy efficiency KW - High power welding KW - Tandem gas metal arc welding PY - 2016 AN - OPUS4-36535 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -