scholarly journals Structured review of papers on the use of different activating flux and welding techniques

2021 ◽  
Author(s):  
Deekshant Varshney ◽  
Kaushal Kumar
Keyword(s):  
Activating Flux

Effect of activating flux on plasma during CO 2 laser welding

2005 ◽  
Author(s):  
Jinhe Liu ◽  
Licai Ma ◽  
Fusheng Zhang ◽  
Danggang Lei
Keyword(s):  
Laser Welding ◽  
Activating Flux

scholarly journals Microstructural Stability of Duplex Stainless Steel Weldments

2007 ◽  
Vol 561-565 ◽  
pp. 2119-2122 ◽  
Author(s):  
János Dobránszky ◽  
János Ginsztler
Keyword(s):  
Phase Transformations ◽  
Welded Joints ◽  
Laser Beam Welding ◽  
Base Material ◽  
Special Kind ◽  
Thermal Ageing ◽  
Tig Welding ◽  
Power Measurement ◽  
Microstructural Stability ◽  
Activating Flux

Welding experiences are demonstrated, which were developed on 2205 type duplex and 2509 type superduplex stainless steels (DSS and SDSS). The welded joints were produced by activated TIG welding and laser beam welding. For the ATIG process, which is a special kind of the TIG-welding, silica powder was used as activating flux. Microstructural characterizations were applied for the measurement of ferrite/austenite phase ratio in the weldments. The welded joints were thermally aged at temperature of 400 °C. The phase transformations produced during thermal ageing were investigated by optical and scanning electron microscopy and thermoelectric power measurement. Investigations show that the thermal ageing induced phase transformations are similar at ATIG-welded weldment and DSS base material, but the incubation time is significantly shorter in the weldment than in the base material when laser welding is applied.

Effect of Activating Flux on the A356 and 6061 Aluminum Alloy GMA Welds

2016 ◽  
Vol 835 ◽  
pp. 161-166 ◽  
Author(s):  
Hsuan Liang Lin ◽  
Wun Kai Wang
Keyword(s):  
Aluminum Alloy ◽  
Gma Welding ◽  
Welding Process ◽  
Hot Cracking ◽  
Bead Geometry ◽  
Weld Bead Geometry ◽  
6061 Aluminum Alloy ◽  
Activating Flux ◽  
Dissimilar Welds ◽  
Grey Relational

The objective of this study is to investigate the effects of activating fluxes on the weld bead geometry, hot cracking susceptibility and mechanical property of A356 and 6061 aluminum alloy dissimilar welds in the gas metal arc (GMA) welding process. In this activated GMA welding process, there were nine single-component fluxes used in the initial experiment to evaluate the penetration capability of butt-joint GMA welds. The grey relational analysis (GRA) was employed to obtain the better weld bead geometry of welds that were considered with multiple quality characteristics. Based on higher grey relational grade (GRG), four single-component fluxes were selected to create mixed-component flux in the next stage. The experimental results showed that the GMA welds coated with activating flux were provided with better geometry of dissimilar welds. The experimental procedure of activated GMA welding process not only produced a significant increase in tensile strength of welds, but also improved the hot cracking susceptibility of aluminum alloy welds.

Study on A-TIG Welding Technology for 12 mm Thick 304 Stainless Steel Plate

2015 ◽  
Vol 817 ◽  
pp. 337-341
Author(s):  
Yao Yong Yi ◽  
Guan Hui Liu ◽  
Yu Peng Zhang ◽  
Zi Yi Luo ◽  
Lei Xu
Keyword(s):  
Stainless Steel ◽  
High Efficiency ◽  
Bond Line ◽  
Tig Welding ◽  
Steel Plates ◽  
304 Stainless Steel ◽  
Activating Flux ◽  
Full Penetration ◽  
A Tig Welding ◽  
New Variant

A-TIG welding is a new variant of high-efficiency TIG weld technology, the weld penetration can be improved by using surface activating fluxes. In the present work, 12 mm thick stainless steel plates were welded by A-TIG method utilizing self-developed oxide-based composite activating flux. Results showed that for 12 mm thick stainless steel plates, weld joint of full penetration and one-side welding with back formation and good weld appearance could be achieved by A-TIG welding. Furthermore, compared with traditional TIG welding, the microstructure of A-TIG weld was finer, directivity of dendritic crystals near weld bond line was weaker, and mechanical properties of weld joints was also superior.

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