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Comparison of methods to correlate input parameters with depth of penetration in LASER welding
Federal University of Santa Catarina, Department of Mechanical Engineering, Laboratory of Precision Engineering, Laser Division (LMP-Laser), Florianópolis, Brazil.
Federal University of Santa Catarina, Department of Mechanical Engineering, Laboratory of Precision Engineering, Laser Division (LMP-Laser), Florianópolis, Brazil.
Federal University of Santa Catarina, Department of Mechanical Engineering, Laboratory of Precision Engineering, Laser Division (LMP-Laser), Florianópolis, Brazil.
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för svetsteknologi (SV). Federal University of Uberlandia, Center for Research and Development of Welding Processes (Laprosolda), Uberlândia Brazil. (PTW)ORCID-id: 0000-0002-1005-5895
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2019 (Engelska)Ingår i: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 101, nr 5-8, s. 1157-1169Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Despite the industrial relevance of LASER welding, determination of sustainable parameterization is still a challenge. Trial and error, or even not totally justified methodologies, are frequently applied on LASER welding parametrization. This approach potentially leads to a decrease of the process tolerance and, consequently, increasing the likelihood of imperfections, which means extra operational time and raising of the final cost. The present paper addresses a comparative discussion about five factors experimentally determined and frequently used to predict depth of penetration in LASER welding. The experiments were performed with a 10-kW fiber LASER. In a first batch, power was varied while welding speed was fixed at 1 m/min. In a second batch, welding speed was varied and power was kept at 10 kW. The first demonstrated concern on using these popular factors is the definition and quantification of LASER energy. For evidencing this aspect, two samples were processed with the same welding energy of 120 kJ/m, yet resulting in completely different penetrations. Eventually, an empirical model based on power as a factor allowed a more reliable prediction of the depth of penetration.

Ort, förlag, år, upplaga, sidor
2019. Vol. 101, nr 5-8, s. 1157-1169
Nyckelord [en]
Autogenous LASER welding, Conduction LASER welding, Keyhole welding, Heat input, Power density, Power factor
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
TEKNIK, Produktions- och materialteknik; Produktionsteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-13147DOI: 10.1007/s00170-018-3018-2ISI: 000463240400004Scopus ID: 2-s2.0-85056474097OAI: oai:DiVA.org:hv-13147DiVA, id: diva2:1276356
Anmärkning

First Online: 14 November 2018

Funders: CNPq

Tillgänglig från: 2019-01-08 Skapad: 2019-01-08 Senast uppdaterad: 2019-05-10Bibliografiskt granskad

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Scotti, Americo

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