Effects of Shielding Gas Pureness on Quality of Orbital TIG Welded Austenitic Stainless-Steel Joints

Authors

  • Jacek Górka Silesian University of Technology http://orcid.org/0000-0001-7838-3636
  • Bernard Wyględacz Katedra Spawalnictwa - Wydział Mechaniczny Technologiczny Politechnika Śląska ul. Konarskiego 18A 44-100 Gliwice
  • Marcin Żuk

DOI:

https://doi.org/10.18063/msacm.v3i1.981

Keywords:

X5CrNi8-10 stainless steel, orbital TIG welding, temper colors, backing gas

Abstract

Aim of this research was determination of effects of shielding and backing gas pureness on quality of welded joints produced from austenitic stainless-steel grade X5CrNi18-10 (1.4301) pipes Ø 50.8 x 1.5 mm by orbital TIG welding without use of additional material. In the case of stainless steel, it is of importance not only to prepare shielding of the molten metal pool but as well protection of welded joint root from oxygen, which causes formation of colorful oxide layers. Presence of oxidized layer primarily decreases corrosion resistance of stainless-steel. Performed examination included: chemical composition of welded join material, delta ferrite testing, non-destructive joint testing, visual testing with discoloration assessment from face and root side (acc. to Danish Force Technology Institute report 93.34 and American ASME BPE-2012 norm), radiographic testing, destructive welded joint testing. Metallurgical shielding of the welded joint face was produced with Argon 5.0 pure, with a flow rate of 8 dm3/min. Root of welded joint was at first protected with Argon 5.0 pure, then argon-atmospheric air mixtures were used. Backing gas flow rate was set to achieve a relative pressure of 300 Pa. Quantity of residual oxygen in gas mixture was selected based on Danish Force Technology Institute report 93.34.

Author Biography

Jacek Górka, Silesian University of Technology

  • Head of the Department of Welding Engineering at the Faculty of Mechanical Engineering of the Silesian University of Technology in Gliwice, holds the EWE (European Welding Engineer) competence certificate, is an expert at the Silesian University of Technology, "Technopark Gliwice" Science and Technology Park in Gliwice, the National Information Processing Institute, member of ECNMgroup Electric Carbon Nanomaterials, University of Cambridge, United Kingdom and Professional Association in Modern Manufacturing Technologies, Modtech Iasi-Romania.
  • Main focus in our research is the welding of modern construction materials, metallurgical processes, quality control of welding processes, abrasive and erosive wear processes and the use of nanostructured carbon materials to modify the properties and structure of welds and pads in order to give them appropriate usable properties. 

References

Weman, K. (2004), A History of Welding. Svetsaren, no. 1, p. 32-35.

Aichele, G. (2005). Orbital welding – solutions for demanding tasks (Part 1). Welding and Cutting, no. 4, p. 176-178.

Lothongkum, G., Chaumbai, P., Bhandhubanyong, P. (1990) TIG pulse welding of 304L austenitic stainless steel in flat, vertical and overhead positions. Journal of Materials Processing Technology, vol. 89-90, p. 410-414.

Lothongkum, G., Viyanit, E., Bhandhubanyong, P. (2001). Study on the effects of pulsed TIG welding parameters on delta-ferrite content, shape factor and bead quality in orbital welding of AISI 316L. Journal of Materials Processing Technology, vol. 110 p. 233-238.

Janicki D. (2013). Fiber laser welding of nickel based superalloy Inconel 625. Proceedings of SPIE, Vol. 8703, Laser Technology 2012: Applications of Lasers.

Lisiecki, A. (2016) Effect of heat input during disk laser bead-on-plate welding of thermomechanically rolled steel on penetration characteristics and porosity formation in the weld metal.. vol. 61, no 1, p. 93–102 DOI: 10.1515/amm-2016-0019

Henon B.K. (1997). Fabrication techniques for successful orbital tube welding. The Tube and Pipe Quarterly. vol. 7, no. 1-2.

Gietka, T.; Ciechacki, K.; Kik, T. (2016). Numerical simulation of duplex steel multipass welding. Archives of Metallurgy and Materials. vol. 61 , p. 1975-1983. DOI: 10.1515/amm-2016-0319

Kurc-Lisiecka A. et al. (2016). The microstructure of metastable austenite in X5CrNi18-10 steel after its strain-induced martensitic transformation. Materiali in tehnologije / Materials and technology. vol 50, no. 6, p. 837-843 doi:10.17222/mit.2015.10

Huang H.Y (2009). Effects of shielding gas composition and activating flux on GTAW Weldments. Material and Design. vol. 30, no. 7, p. 2404–2409.

Ghetiya N. and Pandya D. (2014). Mathematical Modeling for the Bead Width and Penetration in Activated TIG Welding Process. International Conference on Multidisciplinary Research & Practice vol.1, p. 247-252.

Chih-Yu, Hsu, Kuang-Hung and Tseng (2011) Performance of activated TIG process in austenitic stainless steel weld,” Journal of Materials Processing Technology, vol.211, p. 503–512.

Górka, J., Janicki, D., Fidali, M., Jamrozik, W (2017). Thermographic Assessment of the HAZ Properties and Structure of Thermomechanically Treated Steel. International Journal of Thermophysics. vol 38, p. 183 DOI 10.1007/s10765-017-2320-9.

Emmerson, J. (1999). Multipass orbital welding of pipe. The Tube & Pipe Journal. vol. 10, no. 1, p. 22-26.

Mannion, B. (2000). The fundamentals of orbital welding. Gases & Welding Distributor, vol. 44, no. 1, p. 42-44.

Benway, A. A. (2000). Advancements in automatic orbital welding expand its use, provide welders with more option. Industrial Maintenance & Plant Operation. vol. 61, no. 7, p. 22.

Widgery, D. J. (2005). Mechanised welding of pipelines. Svetsaren, vol. 60, no. 1, p. 23-26.

Tsa,i C. H., at al. (2006). Fuzzy control of pulsed GTA welds by using real-time root bead image feedback. Journal of Materials Processing Technology. vol. 176, no. 1-3, p. 158-167.

Lisiecki, A., Burdzik, R., et al. (2105). Disk laser welding of car body zinc coated steel sheets. Archives of Metallurgy and Materials. vol. 60 no. 4, p. 2913–2922 DOI: 10.1515/amm-2015-0465

Ahmadi, E., Ebrahimi, A.R. (2012). The effect of activating fluxes on 316L stainless steel weld joint characteristic in TIG welding using the Taguchi method. Journal of Advanced Materials and Processing. vol.1, p. 55-62.

Janicki, D. (2013). Fiber laser welding of nickel based superalloy Rene 77 Proceedings of SPIE, Vol. 8703, Laser Technology 2012: Applications of Lasers.

Adamiak, M., Wyględacz, B., Czupryński, A., Górka, J. (2017). A study of susceptibility and evaluation of causes of cracks formation in braze-weld filler metal in lap joints aluminum – carbon steel made with use of CMT method and high power diode laser. Archives of Metallurgy and Materials. vol. 62, p. 2113-2123, DOI: 10.1515/amm-2017-0313

Lukkari, J. (2005). Orbital – TIG – a great way to join pipes. Svetsaren. vol. 60, no. 1, p. 3-6.

Kik, T., Moravec, J., Novakova, I. (2017). New method of processing heat treatment experiments with numerical simulation support, 5th International Conference on Modern Technologies in Industrial Engineering (ModTech) Book Series: IOP Conference Series-Materials Science and Engineering Volume: 227.

Schnee, D. (2010). Automatisiertes Orbitalschweißen für Abfüllanlagen. Schweissen und Schneiden. no. 10, p. 546-547.

Sagues, P. (2010). Adaptive control techniques advance automatic welding. Welding Journal, vol. 89, no. 8, p. 26-28.

Tenga, T. L., Chang, P. H. (1998) Three-dimensional thermomechanical analysis of circumferentially welded thin-walled pipes. International Journal of Pressure Vessels and Piping. vol. 75, no. 3, p. 237-247.

Henon, B. K., Brond, A., Mosciaro, H. (2002). Orbital welding best competition. Welding Design & Fabrication. vol. 75, no. 8, p. 28-54.

Morawiński, Ł., Chmielewski, T., Olejnik, L., Buffa, G., Campanella, D., Fratini, L. (2018). Welding abilities of UFG metals, AIP Conference Proceedings 1960 (1), ESAFORM, Palermo, Italy.

Lonthongkum, G., Viyanit, E., Bhandhubanyong, P. (2001). Study on the effects of pulse TIG welding parameters on delta-ferrite content, shape factor and bead quality In orbital welding of AISI 316L stainless steel. Journal of Material Processing Technology, vol. 110, p. 233-238.

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Published

2019-03-27

Issue

Vol 3, No 1 (In publishing)

Section

Original Research Articles

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