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CO2-laser/pulsed MIG hybrid welding of high strength steel
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
Luleå tekniska universitet.
2003 (English)In: 9th NOLAMP Conference: 9th Conference on Laser Materials Processing in the Nordic Countries ; 4 - 6 August 2003, [Trondheim] / [ed] Einar Halmøy, Trondheim: Department of Geography, Norwegian University of Science and Technology, 2003, 125-136 p.Conference paper (Refereed)
Abstract [en]

Hybrid CO2 laser/pulsed MAG welding was carried out on plates of thickness 6 mm of Domex 420 hot rolled, high strength, cold forming steel (0.067%C, 1.11%Mn) and the influence of process parameters on weld quality was investigated. The shielding gas was a mixture of Ar, He and CO2 and the filler wire used in the MAG process was Autrod 12.51 (0.08%C, 1.5%Si, 0.9%Mn). A parametric study on V butt joint preparation specimens was carried out varying wire stick out length, lateral position of arc and laser, current pulse time, pulsing frequency and voltage. Also, butt and fillet welds were produced varying MIG parameters (voltage, pulsing frequency and wire speed), angle of laser beam, lateral position of laser and arc, and gap width. The resultant welds were assessed in terms of weld shape, HAZ width, and presence of defects (undercut, blow holes, spatter). A maximum bridgeable gap width for the butt joints was determined.

Place, publisher, year, edition, pages
Trondheim: Department of Geography, Norwegian University of Science and Technology, 2003. 125-136 p.
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-35410Local ID: 9f218ad0-8c66-11db-8975-000ea68e967bISBN: 82-92499-01-6OAI: oai:DiVA.org:ltu-35410DiVA: diva2:1008663
Conference
Conference on Laser Materials Processing in the Nordic Countries : 04/08/2003 - 06/08/2003
Note
Godkänd; 2003; 20061215 (ysko)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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