Laser cladding: A high-speed-imaging examination of powder catchment efficiency as a function of the melt pool geometry and its position under the powder stream

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Koti, DanielFaculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom (författare)

Laser cladding: A high-speed-imaging examination of powder catchment efficiency as a function of the melt pool geometry and its position under the powder stream

Artikel/kapitelEngelska2023

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Laser Institute of America (LIA),2023
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LIBRIS-ID:oai:DiVA.org:ltu-102646
https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-102646URI
https://doi.org/10.2351/7.0001199DOI

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Språk:engelska
Sammanfattning på:engelska

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Validerad;2023;Nivå 2;2023-11-23 (hanlid);Full text license: CC BY
This paper provides quantitative information about the paths taken by blown powder particles during laser cladding. A proportion of the powder is "wasted" by bouncing off the solid areas surrounding the melt pool. This wastage reduces the productivity and profitability of the process. In this paper, specially developed software was used to analyze high-speed imaging videos of the cladding process, to monitor the directions of powder particle flight toward and away from the melt pool area. This information has been correlated to the geometry and position of the melt pool zone for three different cladding techniques: single track cladding (A tracks), standard overlapping track cladding (AAA cladding), and a recently developed technique called ABA cladding. The results show that the melt pool geometry, and particularly the overlap between the melt pool and the incoming powder stream, has a strong influence on powder catchment efficiency. ABA cladding was found to have considerably better powder catchment efficiency than standard AAA cladding and this improvement can be explained by consideration of the geometries and positions of the melt pools and surrounding solid material in each case. As powder costs are an important factor in industrial laser cladding, the adaption of the ABA technique, and/or control of pool/powder stream overlap (e.g., by making the powder stream not coaxial with the laser beam), could improve the profitability of the process.

Ämnesord och genrebeteckningar

TEKNIK OCH TEKNOLOGIER Materialteknik Bearbetnings-, yt- och fogningsteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Manufacturing, Surface and Joining Technology hsv//eng
ABA laser cladding
DED
High-speed imaging
Laser cladding
Laser direct energy deposition
Powder catchment efficiency
Powder stream
Productivity
Produktionsutveckling
Manufacturing Systems Engineering

Biuppslag (personer, institutioner, konferenser, titlar ...)

Powell, JohnFaculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom; University of Stuttgart, ICM, D-70569 Stuttgart, Germany (författare)
Naesstroem, HimaniLuleå tekniska universitet,Produkt- och produktionsutveckling(Swepub:ltu)himsiv (författare)
Spaccapaniccia, ChiaraIndependent Researcher (författare)
Voisey, K. T.Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom (författare)
Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, United KingdomFaculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom; University of Stuttgart, ICM, D-70569 Stuttgart, Germany (creator_code:org_t)

Sammanhörande titlar

Ingår i:Journal of laser applications: Laser Institute of America (LIA)35:41042-346X1938-1387

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Av författaren/redakt...: Koti, Daniel; Powell, John; Naesstroem, Hima ...; Spaccapaniccia, ...; Voisey, K. T.

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TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Bearbetnings yt ...

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