Effect of gas flow rate during Metal Inert Gas (MIG) welding on tensile strength / Ahmad Safri Mohammed Salleh

This final project is a study about the effect of different gas flow rate used in Metal Inert Gas (MIG) welding on mechanical properties. Other variables such as stand off, current and speed of the welding were fixed. The parent metal consisted of mild steel with 5 mm thickness. MIG welding were cho...

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Main Author:	Mohammed Salleh, Ahmad Safri
Format:	Thesis
Language:	English
Published:	2005
Subjects:	Power resources Power plants
Online Access:	https://ir.uitm.edu.my/id/eprint/21092/1/TD_AHMAD%20SAFRI%20MOHAMMED%20SALLEH%20EM%2005_5.pdf
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spelling	my-uitm-ir.210922018-10-23T09:56:09Z Effect of gas flow rate during Metal Inert Gas (MIG) welding on tensile strength / Ahmad Safri Mohammed Salleh 2005 Mohammed Salleh, Ahmad Safri Power resources Power plants Miscellaneous motors and engines.Including gas, gasoline, diesel engines This final project is a study about the effect of different gas flow rate used in Metal Inert Gas (MIG) welding on mechanical properties. Other variables such as stand off, current and speed of the welding were fixed. The parent metal consisted of mild steel with 5 mm thickness. MIG welding were chosen because it is widely used in many welding application nowadays. The advantages of MIG welding include capability to weld in all position, has higher deposition rates than Shielded Metal Arc Welding, less operator skill required, and long welds can be made without starts and stops. 5 different gas flow rates were used in the study; 5 liter/min, 10 liter/min, 15 liter/min, 20 liter/min and 25 liter/min. The study emphasizes on optimizing the best flow rate that could produce good quality welding, in which evaluation was made from non-destructive and destructive evaluations. The study consists of 2 phases, the welding phase and the post-welding phase. In welding phase, for each gas flow rate, 2 mild steel plates were joined. In post-welding phase, the welded specimen then undergoes non-destructive testing. For non-destructive testing, ultrasonic test was conducted to determine welding quality and to check any existence of internal defects such as porosity, discontinuities, and void. Later, the shaped welded specimens were prepared for destructive evaluation. As destructive evaluation is considered, tensile test was performed, in order to determine the tensile strength values for each welded specimen. Finally, the fractured surface of each specimen was observed in order to strengthen and justify the findings from both non destructive and destructive evaluations. The results shows that gas flow rate of 10 l/min give the highest tensile strength which relates to the lowest amount of discontinuities presence and the highest welding penetration in that particular specimen. 2005 Thesis https://ir.uitm.edu.my/id/eprint/21092/ https://ir.uitm.edu.my/id/eprint/21092/1/TD_AHMAD%20SAFRI%20MOHAMMED%20SALLEH%20EM%2005_5.pdf text en public degree Universiti Teknologi MARA Faculty of Mechanical Engineering
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Power resources Power plants Power resources
spellingShingle	Power resources Power plants Power resources Mohammed Salleh, Ahmad Safri Effect of gas flow rate during Metal Inert Gas (MIG) welding on tensile strength / Ahmad Safri Mohammed Salleh
description	This final project is a study about the effect of different gas flow rate used in Metal Inert Gas (MIG) welding on mechanical properties. Other variables such as stand off, current and speed of the welding were fixed. The parent metal consisted of mild steel with 5 mm thickness. MIG welding were chosen because it is widely used in many welding application nowadays. The advantages of MIG welding include capability to weld in all position, has higher deposition rates than Shielded Metal Arc Welding, less operator skill required, and long welds can be made without starts and stops. 5 different gas flow rates were used in the study; 5 liter/min, 10 liter/min, 15 liter/min, 20 liter/min and 25 liter/min. The study emphasizes on optimizing the best flow rate that could produce good quality welding, in which evaluation was made from non-destructive and destructive evaluations. The study consists of 2 phases, the welding phase and the post-welding phase. In welding phase, for each gas flow rate, 2 mild steel plates were joined. In post-welding phase, the welded specimen then undergoes non-destructive testing. For non-destructive testing, ultrasonic test was conducted to determine welding quality and to check any existence of internal defects such as porosity, discontinuities, and void. Later, the shaped welded specimens were prepared for destructive evaluation. As destructive evaluation is considered, tensile test was performed, in order to determine the tensile strength values for each welded specimen. Finally, the fractured surface of each specimen was observed in order to strengthen and justify the findings from both non destructive and destructive evaluations. The results shows that gas flow rate of 10 l/min give the highest tensile strength which relates to the lowest amount of discontinuities presence and the highest welding penetration in that particular specimen.
format	Thesis
qualification_level	Bachelor degree
author	Mohammed Salleh, Ahmad Safri
author_facet	Mohammed Salleh, Ahmad Safri
author_sort	Mohammed Salleh, Ahmad Safri
title	Effect of gas flow rate during Metal Inert Gas (MIG) welding on tensile strength / Ahmad Safri Mohammed Salleh
title_short	Effect of gas flow rate during Metal Inert Gas (MIG) welding on tensile strength / Ahmad Safri Mohammed Salleh
title_full	Effect of gas flow rate during Metal Inert Gas (MIG) welding on tensile strength / Ahmad Safri Mohammed Salleh
title_fullStr	Effect of gas flow rate during Metal Inert Gas (MIG) welding on tensile strength / Ahmad Safri Mohammed Salleh
title_full_unstemmed	Effect of gas flow rate during Metal Inert Gas (MIG) welding on tensile strength / Ahmad Safri Mohammed Salleh
title_sort	effect of gas flow rate during metal inert gas (mig) welding on tensile strength / ahmad safri mohammed salleh
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Mechanical Engineering
publishDate	2005
url	https://ir.uitm.edu.my/id/eprint/21092/1/TD_AHMAD%20SAFRI%20MOHAMMED%20SALLEH%20EM%2005_5.pdf
_version_	1783733739459706880

Effect of gas flow rate during Metal Inert Gas (MIG) welding on tensile strength / Ahmad Safri Mohammed Salleh

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