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Effect of thermal m...
Effect of thermal management approaches on geometry and productivity of thin-walled structures of er 5356 built by wire + arc additive manufacturing
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- da Silva, Leandro João (author)
- Center for Research and Development of Welding Processes (Laprosolda), Department of Mechanical Engineering, Federal University of Uberlandia (UFU), Uberlândia (BRA)
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- Ferraresi, Henrique Nardon (author)
- Center for Research and Development of Welding Processes (Laprosolda), Department of Mechanical Engineering, Federal University of Uberlandia (UFU), Uberlândia (BRA)
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- Araújo, Douglas Bezerra (author)
- Center for Research and Development of Welding Processes (Laprosolda), Department of Mechanical Engineering, Federal University of Uberlandia (UFU), Uberlândia (BRA)
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- Reis, Reis Pablo (author)
- Center for Research and Development of Welding Processes (Laprosolda), Department of Mechanical Engineering, Federal University of Uberlandia (UFU), Uberlândia (BRA)
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- Scotti, Americo, 1955- (author)
- Högskolan Väst,Avdelningen för svetsteknologi (SV),Center for Research and Development of Welding Processes (Laprosolda), Department of Mechanical Engineering, Federal University of Uberlandia (UFU), Uberlândia (BRA),PTW
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(creator_code:org_t)
- 2021-09-20
- 2021
- English.
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In: Coatings. - : MDPI. - 2079-6412. ; 11:9
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Abstract
Subject headings
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- The present paper aimed at assessing the effect of two thermal management approaches on geometry and productivity of thin-walled structures built by Wire + Arc Additive Manufacturing (WAAM). Thin-walls of ER 5356 (Al5Mg) with different lengths and the same number of layers were deposited via the gas metal arc (GMA) process with the aid of an active cooling technique (near-immersion active cooling-NIAC) under a fixed set of deposition parameters. Then, the same experiment was performed with natural cooling (NC) in air. To characterize the thermal management approaches, the interpass temperature (i.e., the temperature at which subsequent layers are deposited) were monitored by a trailing/leading infrared pyrometer during the deposition time. Finally, thin walls with a fixed length were deposited using the NC and NIAC approaches with equivalent interpass temperatures. As expected, the shorter the wall length the more intense the deposition concentration, heat accumulation, and, thus, geometric deviation. This behavior was more evident and premature for the NC strategy due to its lower heat sinking effectiveness. The main finding was that, regardless of the thermal management technique applied, if the same interpass temperature is selected and maintained, the geometry of the part being built tends to be stable and very similar. However, the total deposition time is somewhat shorter with the NIAC technique due its greater heat sinking advantage. Thus, the NIAC technique facilitates the non-stop manufacturing of small parts and details via WAAM. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- directed energy deposition; wire + arc additive manufacturing; cold metal transfer; thin-walled structures; thermal management; part geometry; production time
- Production Technology
- Produktionsteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
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