Scholarly record
TECHNOLOGICAL METHODS TO REDUCE WELDING STRESSES AND DISTORTIONS
Abstract
When metal structures are manufactured, the heat cycle introduced by the applied welding technology can cause structural changes in the base material, as well as residual stresses, which under certain circumstances can lead to changes in the shape of the structure. This paper analyses certain possibilities to avoid and reduce the stress level and the distortions in the welded structure by applying various welding technological methods. The paper presents the results obtained after the fillet welds were made using the robotic Gas Metal Arc Welding (GMAW) process, by changing the building-up order and succession of the welded seams. The experimental program consisted in the manufacture of the welded pieces by using 3 building-up variants of the welded seams for 3 different types of molten metal transfer: short arc, spray arc, pulsed. The analysis of the obtained results revealed that the building-up order and succession of the welded seams have significant influence on the stress level and on the distortions that occurred during the welding process.
Publication Impact Profile
Publication details
References8
Murugan, VV; Gunaraj, V Effects of process parameters on angular distortion of gas metal arc welded structural steel plates, WELDING JOURNAL, Volume: 84 Issue: 11 Pages: 165S-171S, Published: NOV 2005;
Venkatesan, MV ; Murugan, N ; Prasad, BM; Manickavasagam, A Influence of FCAW Process Parameters on Distortion of 409M Stainless Steel for Rail Coach Building, Journal of iron and steel research international, Vol.: 20 Issue.: 1;
Amza, G Babis, C, Nitoi, D, The influence of the specific rehabilitation techniques "Toegrindig" and "WIG remelting" in case of welded structure, Metalurgija, Volume: 53 Issue: 1 Pages: 71-74, 2014;
Deng D, Murakawa H. Prediction of welding distortion and residual stress in a thin plate butt-welded joint. Comput Mater Sci 2008;
http://www.lincolnelectric.com/en-ca/support/welding-how-to/ accessed: 07.02.2018
Amza, G., Nitoi, D.F., Babis, C., Amza, C., Apostolescu, Z., Influence of the Milling Weld Toe and WIG Remelting Reconditioning Technology to Welded Pieces in the Case of Fatigue Testing, AMEE 2013, Advanced Materials Research, Volume: 684 Pages: 362-366, DOI: 10.4028/www.scientific.net/AMR.684.362, 2013;
Cicic, D., Rontescu, C., Bogatu, A., Dijmărescu, C., Methods of improving the quality of the welding deposit by using a “Sacrifice layer”, SGEM 2017, Volume 17, Issue 61, 2017, Pages 225-232; 2017;
www.boehler-welding.com, accessed: 07.02.2018
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
