Life Cycle Assessment of welding technologies for thick metal plate welds

Sproesser, Gunther; Chang, Ya-Ju; Pittner, Andreas; Finkbeiner, Matthias; Rethmeier, Michael

doi:10.1016/j.jclepro.2015.06.121

Cited by 56 publications

(19 citation statements)

References 20 publications

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“…Due to WAAM's layered approach, previous layers are still hot when the next layer is printed. From (Sproesser et al, 2015) it can be derived that the quantity of emissions is correlated to power consumption. Less power equals less emissions.…”

Section: Waammentioning

confidence: 99%

Life cycle assessment of wire + arc additive manufacturing compared to green sand casting and CNC milling in stainless steel

Bekker

Verlinden

2018

Journal of Cleaner Production

126

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Wire and Arc Additive Manufacturing (WAAM) is a metal 3D printing technique based on robotic welding. This technique yields potential in decreasing material consumption due to its high material efficiency and freedom of shape. Empirical measurements of WAAM, using a deposition rate of 1kg/h, were performed on site of MX3D. The measured power consumption per kg stainless steel is 2.72 kW, of which 1.74 is consumed by the welder, 0.44 by the robotic arm, and 0.54 by the ventilation. The material loss was 1.1%. A 98% argon 2% CO2 welding gas was used with a flow of 12 l/min. A cradle-to-gate Life Cycle Assessment (LCA) was performed. To give this assessment context, green sand casting and CNC milling were additionally assessed, through literature and databases. The purpose of this study is to develop insight into the environmental impact of WAAM. Results indicate that, in terms of total ReCiPe endpoints, the environmental impact of producing a kg of stainless steel 308l product using WAAM is comparable to green sand casting. It equals CNC milling with a material utilization fraction of 0.75. Stainless steel is the main cause of environmental damage in all three techniques, emphasizing the importance of WAAM's mass reduction potential. When environmentally comparing the three techniques for fulfilling a certain function, optimized designs should be introduced for each manufacturing technique. Results can vary significantly based on product shape, function, materials, and process settings.

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Section: Waammentioning

confidence: 99%

Life cycle assessment of wire + arc additive manufacturing compared to green sand casting and CNC milling in stainless steel

Bekker

Verlinden

2018

Journal of Cleaner Production

126

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“…Regarding the development of new technologies, existing efforts encompass, for example, the improvement of welding technologies in terms of resource consumption (Sproesser et al 2015) or the development of new internally cooled cutting processes (Uhlmann et al 2012). At the manufacturing cell level, lifetime-extending add-ons for machine-tools (Kianinejad et al 2016) and of automated workplaces preventing musculoskeletal strain by workers (Krüger and Nguyen 2015), can be cited as examples.…”

Section: Manufacturing Technologiesmentioning

confidence: 99%

Field of Research in Sustainable Manufacturing

Bonvoisin

Stark

Seliger

2017

Sustainable Production, Life Cycle Engineering and Management

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Sustainability has raised significant attention in manufacturing research over the last decades and has become a significant driver of the development of innovative technologies and management concepts. The current chapter aims to provide a structured overview of the wide field of research in sustainable manufacturing with a particular focus on manufacturing technology and management. It intends to describe the role of manufacturing in sustainability, outline the complementary approaches necessary for a transition to sustainable manufacturing and specify the need for engaging in interdisciplinary research. Based on a literature review, it provides a structuring framework defining four complementary areas of research focussing on analysis, synthesis and transition solutions. The challenges of the four areas of research manufacturing technologies ("how things are produced"), product development ("what is being produced"), value creation networks ("in which organisational context") and global manufacturing impacts ("how to make a systemic change") are highlighted and illustrated with examples from current research initiatives.

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“…This section introduces the processes alternatives for which environmental assessments are performed: i) welding of largediameter steel pipes (Sproesser et al, 2015) (in the following indicated by subscript w) and ii) turning of high temperature resistant materials (Uhlmann et al, 2013) (indicated by subscript t). Both processes are found in comparatively small and highly specialized fields.…”

Section: Case Studies: Process Innovation Technologies In Welding Andmentioning

confidence: 99%

“…It has gained popularity because it benefits from the advantages of both technologies (Ribic et al, 2009). Additionally HLAW offers huge potentials for increasing economic and environmental performance when substituting or enhancing conventional arc processes (Chang et al, 2014;Gook et al, 2014;Sproesser et al, 2015). However, the maximum plate thickness for robust one pass welding is limited.…”

Section: Longitudinal Welding Of Large-diameter Steel Pipesmentioning

confidence: 99%

Assessing carbon dioxide emission reduction potentials of improved manufacturing processes using multiregional input output frameworks

Ward

Burger

Chang

et al. 2017

Journal of Cleaner Production

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a b s t r a c tEvaluating innovative process technologies has become highly important within the last decades. As standard tools different Life Cycle Assessment methods have been established, which are continuously improved. While those are designed for evaluating single processes they run into difficulties when it comes to assessing environmental impacts of process innovations at macroeconomic level. In this paper we develop a multi-step evaluation framework building on multi regional inputeoutput data that allows estimating macroeconomic impacts of new process technologies, considering the network characteristics of the global economy.Our procedure is as follows: i) we measure differences in material usage of process alternatives, ii) we identify where the standard processes are located within economic networks and virtually replace those by innovative process technologies, iii) we account for changes within economic systems and evaluate impacts on emissions.Within this paper we exemplarily apply the methodology to two recently developed innovative technologies: longitudinal large diameter steel pipe welding and turning of high-temperature resistant materials. While we find the macroeconomic impacts of very specific process innovations to be small, its conclusions can significantly differ from traditional process based approaches. Furthermore, information gained from the methodology provides relevant additional insights for decision makers extending the picture gained from traditional process life cycle assessment.

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Life Cycle Assessment of welding technologies for thick metal plate welds

Cited by 56 publications

References 20 publications

Life cycle assessment of wire + arc additive manufacturing compared to green sand casting and CNC milling in stainless steel

Life cycle assessment of wire + arc additive manufacturing compared to green sand casting and CNC milling in stainless steel

Field of Research in Sustainable Manufacturing

Assessing carbon dioxide emission reduction potentials of improved manufacturing processes using multiregional input output frameworks

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