Modeling of Melt Flow and Heat Transfer in Stationary Gas Tungsten Arc Welding with Vertical and Tilted Torches

A 3D numerical simulation was conducted to study the transient development of temperature distribution in stationary gas tungsten arc welding with filler wire. Heat transfer to the filler wire and the workpiece was investigated with vertical (90°) and titled (70°) torches. Heat flux, current flux, a...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Shahid Parvez, Md Irfanul Haque Siddiqui, Masood Ashraf Ali, Dan Dobrotă
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	melt flow in weld pool gas tungsten arc welding heat transfer to the filler wire GTAW with filler wire tilted torch transient heat transfer in GTAW Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/d6fdd09c396a4c488b5d377658bdab65
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:d6fdd09c396a4c488b5d377658bdab65
record_format	dspace
spelling	oai:doaj.org-article:d6fdd09c396a4c488b5d377658bdab652021-11-25T18:14:04ZModeling of Melt Flow and Heat Transfer in Stationary Gas Tungsten Arc Welding with Vertical and Tilted Torches10.3390/ma142268451996-1944https://doaj.org/article/d6fdd09c396a4c488b5d377658bdab652021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6845https://doaj.org/toc/1996-1944A 3D numerical simulation was conducted to study the transient development of temperature distribution in stationary gas tungsten arc welding with filler wire. Heat transfer to the filler wire and the workpiece was investigated with vertical (90°) and titled (70°) torches. Heat flux, current flux, and gas drag force were calculated from the steady-state simulation of the arc. The temperature in the filler wire was determined at three different time intervals: 0.12 s, 0.24 s, and 0.36 s. The filler wire was assumed not to deform during this short time, and was therefore simulated as solid. The temperature in the workpiece was calculated at the same intervals using heat flux, current flux, gas drag force, Marangoni convection, and buoyancy. It should be noted that heat transfer to the filler wire was faster with the titled torch compared to the vertical torch. Heat flux to the workpiece was asymmetrical with both the vertical and tilted torches when the filler wire was fully inserted into the arc. It was found that the overall trends of temperature contours for both the arc and the workpiece were in good agreement. It was also observed that more heat was transferred to the filler wire with the 70° torch compared with the 90° torch. The melted volume of the filler wire (volume above 1750 °K) was 12 mm<sup>3</sup> with the 70° torch, compared to 9.2 mm<sup>3</sup> with the 90° torch.Shahid ParvezMd Irfanul Haque SiddiquiMasood Ashraf AliDan DobrotăMDPI AGarticlemelt flow in weld poolgas tungsten arc weldingheat transfer to the filler wireGTAW with filler wiretilted torchtransient heat transfer in GTAWTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6845, p 6845 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	melt flow in weld pool gas tungsten arc welding heat transfer to the filler wire GTAW with filler wire tilted torch transient heat transfer in GTAW Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	melt flow in weld pool gas tungsten arc welding heat transfer to the filler wire GTAW with filler wire tilted torch transient heat transfer in GTAW Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Shahid Parvez Md Irfanul Haque Siddiqui Masood Ashraf Ali Dan Dobrotă Modeling of Melt Flow and Heat Transfer in Stationary Gas Tungsten Arc Welding with Vertical and Tilted Torches
description	A 3D numerical simulation was conducted to study the transient development of temperature distribution in stationary gas tungsten arc welding with filler wire. Heat transfer to the filler wire and the workpiece was investigated with vertical (90°) and titled (70°) torches. Heat flux, current flux, and gas drag force were calculated from the steady-state simulation of the arc. The temperature in the filler wire was determined at three different time intervals: 0.12 s, 0.24 s, and 0.36 s. The filler wire was assumed not to deform during this short time, and was therefore simulated as solid. The temperature in the workpiece was calculated at the same intervals using heat flux, current flux, gas drag force, Marangoni convection, and buoyancy. It should be noted that heat transfer to the filler wire was faster with the titled torch compared to the vertical torch. Heat flux to the workpiece was asymmetrical with both the vertical and tilted torches when the filler wire was fully inserted into the arc. It was found that the overall trends of temperature contours for both the arc and the workpiece were in good agreement. It was also observed that more heat was transferred to the filler wire with the 70° torch compared with the 90° torch. The melted volume of the filler wire (volume above 1750 °K) was 12 mm<sup>3</sup> with the 70° torch, compared to 9.2 mm<sup>3</sup> with the 90° torch.
format	article
author	Shahid Parvez Md Irfanul Haque Siddiqui Masood Ashraf Ali Dan Dobrotă
author_facet	Shahid Parvez Md Irfanul Haque Siddiqui Masood Ashraf Ali Dan Dobrotă
author_sort	Shahid Parvez
title	Modeling of Melt Flow and Heat Transfer in Stationary Gas Tungsten Arc Welding with Vertical and Tilted Torches
title_short	Modeling of Melt Flow and Heat Transfer in Stationary Gas Tungsten Arc Welding with Vertical and Tilted Torches
title_full	Modeling of Melt Flow and Heat Transfer in Stationary Gas Tungsten Arc Welding with Vertical and Tilted Torches
title_fullStr	Modeling of Melt Flow and Heat Transfer in Stationary Gas Tungsten Arc Welding with Vertical and Tilted Torches
title_full_unstemmed	Modeling of Melt Flow and Heat Transfer in Stationary Gas Tungsten Arc Welding with Vertical and Tilted Torches
title_sort	modeling of melt flow and heat transfer in stationary gas tungsten arc welding with vertical and tilted torches
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d6fdd09c396a4c488b5d377658bdab65
work_keys_str_mv	AT shahidparvez modelingofmeltflowandheattransferinstationarygastungstenarcweldingwithverticalandtiltedtorches AT mdirfanulhaquesiddiqui modelingofmeltflowandheattransferinstationarygastungstenarcweldingwithverticalandtiltedtorches AT masoodashrafali modelingofmeltflowandheattransferinstationarygastungstenarcweldingwithverticalandtiltedtorches AT dandobrota modelingofmeltflowandheattransferinstationarygastungstenarcweldingwithverticalandtiltedtorches
_version_	1718411468725026816

Modeling of Melt Flow and Heat Transfer in Stationary Gas Tungsten Arc Welding with Vertical and Tilted Torches

Ejemplares similares