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Sustainability of Wire Arc Additive Manufacturing using Inconel 625
University West, Department of Engineering Science.
University West, Department of Engineering Science.
2022 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Wire Arc Additive Manufacturing (WAAM) is a manufacturing process used to 3D print parts or for localized repair of the metallic components. WAAM utilizes a metal wire as feedstock and an electric arc as an energy source for melting. The arc fuses the wire as it’s deposited layer on top of layer by a welding robot. The interest in WAAM has increased inrecent years thanks to its many benefits. Cost reduction, ability to build large metal components, reducing the number of stages of production, lead time reduction as well as increasing the freedom and flexibility of product design [1].The purpose of this study was to analyse the environmental impact of WAAM-process in terms of energy use and CO2 footprint. This includes an overview of AM techniques involving metals and a quantitative life-cycle investigation of the superalloy Inconel 625.The results from the conducted experiments show that the environmental impact is dependent on the geometrical building strategy. Most of the energy use and CO2 footprint occurs due to extraction and production of material resources necessary for manufacturing.The use of Argon protection gas also contributes significantly. The welding system itself does, however add relatively little to the energy use and CO2 footprint, especially if a Swedish or Nordic energy mix is used. Some of the benefits of using WAAM are waste reduction and light weighting. The use of WAAM therefore provides opportunities of sustainable developments and advancement compared to traditional manufacturing.  

Place, publisher, year, edition, pages
2022. , p. 35
Keywords [en]
Additive manufacturing, sustainability
National Category
Other Engineering and Technologies not elsewhere specified
Identifiers
URN: urn:nbn:se:hv:diva-19065Local ID: EXI503OAI: oai:DiVA.org:hv-19065DiVA, id: diva2:1688283
Subject / course
Mechanical engineering
Educational program
Industriell ekonomi
Supervisors
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Available from: 2022-08-24 Created: 2022-08-18 Last updated: 2022-08-24Bibliographically approved

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