Journal Article•
Laser cuts time to completion at vosper thornycroft
About: This article is published in Welding and metal fabrication.The article was published on 1996-01-01 and is currently open access. It has received 18 citations till now.
Citations
More filters
TL;DR: In this paper, different types of flux are applied when welding ferritic stainless steel with the objective of verifying possible influences on the weld bead's profile, on its visual appearance, on the microstructure, on hardness of the welded zone and on the impact resistance.
Abstract: The main advantage of the TIG with flux process (A-TIG welding) is the possibility of obtaining greater penetration of the weld bead while employing the same welding parameters as conventional TIG welding. Various studies have shown the influence of active fluxes on the geometric characteristics of stainless steel austenitic welds. However, little is known about the influence of this process on the geometric and metallurgical characteristics of the weld beads in ferritic stainless steels. In this work, different types of flux are applied when welding ferritic stainless steel with the objective of verifying possible influences on the weld bead's profile, on its visual appearance, on the microstructure, on the hardness of the welded zone and on the impact resistance (Charpy test). The bead-on-plate welds were produced without using any addition metal. Six types of flux were used – one being an oxide produced in a laboratory (TiO2) and five commercial fluxes. The results showed that use of the flux allows an...
13 citations
TL;DR: In this article, the tensile strength of FBTIG welds of aluminum alloy AA2219-T87 was investigated and compared with that of conventional TIG weld and base metal.
Abstract: Limitation in depth of penetration is a concern in conventional tungsten inert gas (TIG) welding process. To improve penetration capability of TIG process, flux bounded TIG (FBTIG) has been recently developed. Tensile strength of FBTIG welds of aluminum alloy AA2219-T87 is investigated in the present study and compared with that of conventional TIG welds and base metal. Tensile strength of FBTIG weld was found to be better than conventional TIG weld due to fine grain structure of FBTIG welds.
10 citations
TL;DR: The activated flux TIG (A-TIG) welding as mentioned in this paper is a TIG welding process that is applied with an active flux deposited on the workpiece surface just before welding.
Abstract: The tungsten (W) inert gas (TIG) welding process that is applied with an active flux deposited on the workpiece surface just before welding is called activated flux TIG (A-TIG) welding. Layer depos...
8 citations
TL;DR: In this article, an optimized mixture of MnO2, SiO2 and TiO2 was found to be effective for enhancement of penetration and width of bead in Activated Tungsten Inert Gas (ATIG) welding.
7 citations
TL;DR: In this article, the depth weld of binary oxides was increased by 3.7 times in comparison with tungsten inert gas (TIG) weld bead, and the tensile strength of welds carried out with Fe2O3-Cr 2O3 and ZnO-Mn2O 3 binary fluxes were close to those of the parent metal.
Abstract: Duplex stainless steel (DSSs) is characterized by excellent corrosion resistance with high strength. Twelve single-component fluxes (TiO2, Fe2O3, Cr2O3, ZnO, ZrO2, CaO, Mn2O3, V2O5, MoO3, SrO, MgO, and LaO2) were tested in the initial experiment using activated Tungsten inert gas (ATIG) technic, and then three couples of oxides were selected as binary fluxes (Fe2O3-Cr2O3, ZnOMn2O3, and V2O5-Mn2O3) for the rest of the study. )e results show that the depth weld of binary oxides (Fe2O3-Cr2O3, ZnOMn2O3) was increased by 3.7 times in comparison with tungsten inert gas (TIG) weld bead. )e hardness and the tensile strength
of welds carried out with Fe2O3-Cr2O3 and ZnO-Mn2O3 binary fluxes were close to those of the parent metal. Weld bead executed with ZnO-Mn2O3 oxides has more capability to withstand sudden loads. Potentiodynamic polarization tests were performed. The metal welded with flux composed of Fe2O3-Cr2O3 has been found the most resistant to corrosion.
3 citations