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Properties of laser hybrid butt welds of 420 MPa steel
SINTEF, Trondheim.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Produkt- och produktionsutveckling.
SINTEF, Trondheim.
Kværner Verdal.
Vise andre og tillknytning
2013 (engelsk)Inngår i: The proceedings of the Twenty-third (2013) International Offshore and Polar Engineering Conference: Anchorage, Alaska, June 30-July 5, 2013 : ISOPE-2013 Anchorage / [ed] Jin S. Chung, Cupertino, Calif.: International Society of Offshore and Polar Engineers , 2013, s. 290-294Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Laser hybrid welding has been used in European shipbuilding for many years due to its high productivity. In order to qualify the process for the oil and gas industry, an extensive welding and testing programme is needed, and the properties must satisfy more severe requirements than in shipbuilding. This is particularly the case when these activities are moving to the Arctic regions, where low temperature toughness may be the primary challenge. The present investigation addressed preliminary welding trials carried out with 15 kW fibre laser-gas metal arc (GMA) hybrid welding using double Y joint of 20 mm thick 420 MPa steel plates. Both Charpy V notch impact and CTOD fracture mechanical testing were included with test temperature of -30°C. The results indicate that the heat affected zone (HAZ) of the examined steel appeared with satisfactory toughness (> 200 J, > 0.2 mm) while the employed weld metal had insufficient impact properties. The weld metal CTOD toughness approached 0.2 mm. With a better welding wire, designed for low temperature applications, it is reasonable to suggest that laser hybrid arc welding can be used for applications even below -30 to -40°C

sted, utgiver, år, opplag, sider
Cupertino, Calif.: International Society of Offshore and Polar Engineers , 2013. s. 290-294
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URN: urn:nbn:se:ltu:diva-28262Lokal ID: 2010a98a-ee73-45be-8932-b673bdaad5fcISBN: 9781880653999 (tryckt)OAI: oai:DiVA.org:ltu-28262DiVA, id: diva2:1001457
Konferanse
International Offshore and Polar Engineering Conference : 30/05/2013 - 05/06/2013
Merknad
Godkänd; 2013; 20130924 (andbra)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2017-11-25bibliografisk kontrollert

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Totalt: 615 treff
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