TY - JOUR

T1 - Manufacture and investigation of twochamber flux-cored wires for continuous underwater wet welding

AU - Lendiel, Ivan

AU - Klett, Jan

AU - Wolf, Thomas

AU - Schmidt, Emily

AU - Vaccari, Leandro

AU - Hassel, Thomas

N1 - Funding Information: The IGF project number 20.363N / DVS number V4.3054 of the research associ- ation “Forschungsvereinigung Schweißen und verwandte Verfahren e. V. des DVS, Aachener Str. 172, 40223 Düsseldorf” was, on the basis of a resolution of the German Bundestag, supported by the Federal Ministry for Economic Affairs and Climate Action via the Federation of Industrial Research Associations (AiF) within the framework of the programme for the promotion of joint industrial research (IGF).

PY - 2022

Y1 - 2022

N2 - Wet manual arc welding is a typical joining process for underwater welding. In most cases, stick electrodes are used when wet welding has to be carried out. A continuous welding process contributes to improving the divers work performance by minimizing the starting points, consequently reducing the sources of error and therefore the workload and costs. Scientific work in this field is performed at the Institute of Material Science (Leibniz University Hannover), where promising results have been achieved developing flux-cored wire and the necessary technology of underwater wet welding. In this article investigations of welding properties (stability, porosity, form factor and separability of the slag) of the two-chamber fluxcored wire are presented. The optimal ratio of shielding gas and slag-forming fillers of the three-component mixtures “fluorite-rutile-magnetite” and “fluorite-rutile-dolomite” were determined and the respective two-chamber flux-cored wires were manufactured and tested.

AB - Wet manual arc welding is a typical joining process for underwater welding. In most cases, stick electrodes are used when wet welding has to be carried out. A continuous welding process contributes to improving the divers work performance by minimizing the starting points, consequently reducing the sources of error and therefore the workload and costs. Scientific work in this field is performed at the Institute of Material Science (Leibniz University Hannover), where promising results have been achieved developing flux-cored wire and the necessary technology of underwater wet welding. In this article investigations of welding properties (stability, porosity, form factor and separability of the slag) of the two-chamber fluxcored wire are presented. The optimal ratio of shielding gas and slag-forming fillers of the three-component mixtures “fluorite-rutile-magnetite” and “fluorite-rutile-dolomite” were determined and the respective two-chamber flux-cored wires were manufactured and tested.

KW - developing flux-cored wire

KW - optimal ratio of powder fillers

KW - underwater technology

KW - wet welding

UR - http://www.scopus.com/inward/record.url?scp=85144534522&partnerID=8YFLogxK

U2 - 10.53192/WAC202204296

DO - 10.53192/WAC202204296

M3 - Article

AN - SCOPUS:85144534522

SP - 296

EP - 302

JO - Welding and Cutting

JF - Welding and Cutting

SN - 1612-3433

IS - 4

ER -