Welding consumables with lower emission of CrVI
Journal Title: Biuletyn Instytutu Spawalnictwa - Year 2018, Vol 62, Issue 5
Abstract
The article provides information about new filler metals used in the welding of popular stainless steel grades and discusses the formation of Cr6+ in dusts as well as alkaline metals connected with the process. Newly developed covered electrodes and flux-cored wires are characterised by the reduced emission of dust during welding and by the lower content of carcinogenic hexavalent chromium in dust. One of the major difficulties, i.e. the obtainment of required properties of the electrode cover, was solved by using a two-layer cover. New grades of electrodes and flux-cored wires were subjected to tests, among others at the British TWI, to compare the emission of dust and that of Cr6+ with those generated by standard materials. The above-named tests revealed that the at-the-source emission of Cr6+ was 4 times lower in terms of the electrodes and 3 times lower as regards the flux-cored wires than emissions accompanying the use of standard materials.
Authors and Affiliations
Sorin Craciun, Daniel Toncelli, Bruno Leduey
Keywords
Related Articles
- EP ID EP426549
- DOI 10.17729/ebis.2018.5/7
- Views 22
- Downloads 0
Welding consumables with lower emission of CrVI
The article provides information about new filler metals used in the welding of popular stainless steel grades and discusses the formation of Cr6+ in dusts as well as alkaline metals connected with the process. Newly dev...
Evaluation of the Microstructure of 600 and 617 Nickel Alloys Subjected to Arc Welding
The paper presents the results concerning the assessment of the microstructure 600 and 617 nickel alloys. Test alloys delivered as plates were exposed to welding arc applied in the TIG method. The assessment involving th...
Comprehensive Procedure of the Assessment of the Quality of Welded Joints Made in Alloy INCONEL 617
The development of the power engineering industry forces designers and material engineers to develop and implement new technologically advanced materials, including alloy INCONEL 617. There are numerous works concerning...
Welding of (Super) Duplex Stainless Steel
The article presents and describes in detail duplex steels used in modern sectors of industry (duplex, super duplex, lean duplex and hyper duplex), with particular attention paid to corrosion resistance and primary areas...
Effect of a One-Time Repair of a Welded Joint Made in Steel S960QL on the Properties of the HAZ
The fabrication of steel structures is often accompanied by the necessity of removing defects and welding imperfections formed during welding. An additional thermal cycle accompanying the making of a new weld has an undo...