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Characterization of cold lap defects in tandem arc MAG welding
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för maskinteknik. (PTW)
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för maskinteknik. (PTW)ORCID-id: 0000-0003-2560-0531
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för industriell produktion. (PTW)ORCID-id: 0000-0001-7787-5444
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för industriell produktion. (PTW)ORCID-id: 0000-0002-9578-4076
Vise andre og tillknytning
2013 (engelsk)Inngår i: Rivista Italiana della Saldatura, ISSN 0035-6794, Vol. 65, nr 5, s. 761-769Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The objective of this investigation was to classify and characterize the small lack of fusion defects, called cold lap, located at the weld toe. Since the defects are very small (0.01-1.5 mm) and difficult to detect by NDT methods, a better understanding of the formation mechanism is required to be able to avoid their formation. The investigation consisted of two parts. Firstly, a study was made on the type and frequency of cold laps. Three types were identified, namely "spatter cold lap", and "overlap cold lap" and "spatter-overlap cold lap". No relation between type or frequency of cold laps and the welding parameters could be established. Secondly, the interface between spatter and the base material was investigated using optical and scanning electron microscopy, to better understand the cold lap formation mechanism. Manganese-silicate particles were found in the interface located in such a way that they may assist cold lap formation.

sted, utgiver, år, opplag, sider
Istituto Italiano della Saldatura , 2013. Vol. 65, nr 5, s. 761-769
Emneord [en]
Work-integrated Learning, WIL
Emneord [sv]
AIL
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik; Arbetsintegrerat lärande
Identifikatorer
URN: urn:nbn:se:hv:diva-5768Scopus ID: 2-s2.0-84887474468OAI: oai:DiVA.org:hv-5768DiVA, id: diva2:668402
Tilgjengelig fra: 2013-11-29 Laget: 2013-11-28 Sist oppdatert: 2019-05-03bibliografisk kontrollert

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Svensson, Lars-ErikNylén, PerMarkocsan, Nicolaie

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