TY - CONF A1 - Sproesser, Gunther A1 - Rethmeier, Michael A1 - Pittner, Andreas T1 - Increasing performance and energy efficiency of Gas Metal Arc Welding by a high power tandem process N2 - Standard Gas Metal Arc Welding (Standard GMAW) and a high power Tandem GMAW (TGMAW) process are evaluated with respect to energy efficiency. Current, voltage and overall equipment power are measured and energy consumption is determined. The new key performance indicator Electrical Deposition Efficiency is introduced to reflect the energy efficiency of GMAW processes. Additionally, wallplug efficiency of the equipment is determined in order to identify the overall energy consumption. Results show that energy efficiency as well as economic process performance can be significantly increased by application of the TGMAW process. Furthermore findings indicate that wall-plug efficiency of the equipment is independent of power Level and material transfer mode. A metal plate of 30 mm thick structural steel is joined by Standard GMAW and TGMAW to demonstrate the total energy savings for a real weld. Electricity consumption is reduced by more than 20 % using the high power TGMAW process. T2 - 13th Global Conference on Sustainable Manufacturing CY - Ho Chi Minh City & Binh Duong, Vietnam DA - 16.09.2015 KW - thick metal plate welding KW - Energy efficiency KW - Tandem Gas Metal Arc Welding KW - high power welding PY - 2015 AN - OPUS4-35439 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sproesser, Gunther A1 - Pittner, Andreas A1 - Rethmeier, Michael T1 - Ökobilanzierung von Dickblechverbindungen T2 - Fraunhofer IPK Workshop "Fügeprozesse für Anwendungen im Dickblechbereich" CY - Berlin, Germany DA - 2015-03-11 PY - 2015 AN - OPUS4-33001 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Sproesser, Gunther A1 - Chang, Ya-Ju A1 - Pittner, Andreas A1 - Rethmeier, Michael A1 - Finkbeiner, Matthias T1 - Laser-MSG-Hybridschweißen und die Ökobilanz: Sieg nach Punkten N2 - Es ist ein Naturgesetz: Mit der verarbeiteten Blechdicke steigt der Zeit-, Material- und Energiebedarf beim Fügen überproportional. Aber ist das noch umweltverträglich ? Dieser Frage stellte sich Gunther Sproesser mit seinen Kollegen an der Technischen Universität Berlin. KW - MSG-Schweißen KW - Hochleistungsschweißen KW - Ökobilanz KW - Laser-MSG-Hybridschweißen PY - 2015 UR - http://www.laser-community.com/de/schweiss-verfahren-im-oeko-check/ N1 - In Deutsch und Englisch erschienen. Titel in English: "A win on points: LAHW/GMAW welding tops life-cycle analysis study" IS - 21/November 2015 SP - 6 EP - 6 AN - OPUS4-35438 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Sproesser, Gunther A1 - Chang, Y.-J. A1 - Pittner, Andreas A1 - Finkbeiner, M. A1 - Rethmeier, Michael T1 - Life cycle assessment of welding technologies for thick metal plate welds N2 - Life Cycle Assessment (LCA) is applied in evaluating environmental impacts of state-of-the-art welding technologies. Manual Metal Arc Welding (MMAW), Laser Arc-Hybrid Welding (LAHW) and two Gas Metal Arc Welding (GMAW) variants are used to join a plate of 20 mm thick structural steel. The LCA results indicate that for 1 m weld seam, MMAW causes the highest environmental impacts in global warming potential (GWP), eutrophication potential (EP), acidification potential (AP), and photochemical ozone creation potential (POCP) among the selected processes, and the LAHW variant performances the least. Filler material and electricity consumptions generally dominate the impacts and reach shares of up to 80% and 61% in the respective impact categories. However, electrode coating consumption in MMAW remarkably contributes impacts on AP and EP, for instance 52% of AP and 76% of EP. Strategies for improvement of the applied welding technologies are discussed. KW - Life Cycle Assessment (LCA) KW - Arc welding KW - Laser arc-hybrid welding KW - Resource efficiency PY - 2015 DO - https://doi.org/10.1016/j.jclepro.2015.06.121 SN - 0959-6526 VL - 108 IS - Part: A SP - 46 EP - 53 PB - Elsevier Science CY - Amsterdam AN - OPUS4-34969 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - 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 - TY - CONF A1 - Sproesser, Gunther A1 - Pittner, Andreas A1 - Rethmeier, Michael T1 - Sustainable welding production N2 - The project Sustainable Welding Production is presented with its motivation, results and impact as well as with demonstrator case study T2 - 23rd Conference on Life Cycle Engineering CY - Berlin, Germany DA - 22.052016 KW - Gas metal arc welding KW - Hybrid laser arc welding KW - High power welding KW - Energy efficiency KW - Life cycle assessment PY - 2016 AN - OPUS4-36536 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sproesser, Gunther A1 - Pittner, Andreas A1 - Schenker, S. A1 - Borndörfer, R. A1 - Chang, Y.-J. A1 - Finkbeiner, M. A1 - Rethmeier, Michael T1 - Sustainable welding process selection based on weight space partitions T2 - The 13th Global Conference on Sustainable Manufacturing CY - Ho Chi Minh City & Binh Duong, Vietnam DA - 2015-09-16 PY - 2015 AN - OPUS4-34844 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Sproesser, Gunther A1 - Rethmeier, Michael A1 - Pittner, Andreas A1 - Chang, Y.-J. A1 - Finkbeiner, M. T1 - Reduction of the Environmental Impacts of Gas Metal Arc Welding by an Energy Efficient Tandem Process - IIW Doc.XII-2292-16 N2 - This paper investigates GMAW with respect to energy consumption and its associated environmental impacts. Different material transfer modes and power levels for Single Wire GMAW (SGMAW) and Tandem GMAW (TG-MAW) are evaluated by means of the indicator Electrical Deposition Efficiency. Furthermore, the wall-plug efficiency of the equipment is measured in order to describe the total energy consumption from the grid. The results show that energy efficiency is highly affected by the respective process and can be significantly enhanced by a TGMAW process. The wall-plug efficiency of the equipment shows no significant dependency on the power range or the material transfer mode. Moreover, the method of Life Cycle Assessment (LCA) is adopted in order to investigate the influences of energy efficient welding on the environmental impacts. In the comparative LCA study, the demand of electrical energy is reduced up to 24%. In consequence, the indicator values for GlobalWarming Potential (100), Acidification Potential, Eutrophication Potential and Photochemical Ozone Creation Potential that are applied to express the environmental impacts are reduced up to 11%. T2 - 69th IIW Annual Assembly and Internationla Conference CY - Melbourne, Australia DA - 10.07.2016 KW - GMA welding KW - Energy input KW - Environment KW - Tandem welding PY - 2016 AN - OPUS4-37489 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -