Cover Image

Impact of Argon gas shielding flow rate on the hardness of weld joint

Metal inert gas (MIG) welding technique is one of the most widely utilized permanent metal joining technique in various applications due to its adaptability towards automation. One of the critical process parameters in MIG is shielding gas flow rate. One of the main purposes of shielding gas is to p...

Full description

Saved in:
Bibliographic Details
Main Authors: Abd Rahman, Md Nizam, Zulkipli, Nur Hidayah, Kasim, Mohd Shahir, Jamli, Mohamad Ridzuan, Budi, Esmar
Format: Article
Language:English
Published: Penerbit Universiti Teknikal Malaysia Melaka 2022
Online Access:http://eprints.utem.edu.my/id/eprint/26197/2/DOCUMENT.PDF
http://eprints.utem.edu.my/id/eprint/26197/
https://jamt.utem.edu.my/jamt/article/view/6273/3978
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utem.eprints.26197
record_format eprints
spelling my.utem.eprints.261972023-06-15T14:41:40Z http://eprints.utem.edu.my/id/eprint/26197/ Impact of Argon gas shielding flow rate on the hardness of weld joint Abd Rahman, Md Nizam Zulkipli, Nur Hidayah Kasim, Mohd Shahir Jamli, Mohamad Ridzuan Budi, Esmar Metal inert gas (MIG) welding technique is one of the most widely utilized permanent metal joining technique in various applications due to its adaptability towards automation. One of the critical process parameters in MIG is shielding gas flow rate. One of the main purposes of shielding gas is to prevent the formation of oxidation and porosity at the weld pool. However, study on the optimum level of shielding gas flow rate is lacking. This study investigated the impact of argon gas flow rate, as a shielding gas, on the weld zone hardness of a 3 mm thick mild steel plate. The flow rates of argon shielding gas were evaluated at five levels (0 SCFH, 15 SCFH, 30 SCFH, 45 SCFH, and 60 SCFH). Vickers hardness test was performed and an optical micrograph was captured for all samples. One-way ANOVA analysis was conducted to ascertain the statistical difference of hardness among the samples at a 95% confidence level. The results indicated that the argon flow rate has a significant positive impact on the hardness of the weld zones as the shielding gas flow rate increases from 0 to 45 SCFH. However, the hardness significantly dropped at 65 SCFH. The drop in hardness was attributed to an increase in the presence of porosity. It is postulated that the high shielding gas flow rate resulted in turbulence flow that promotes air entrapment in the weld joint during solidification. The high flow rate also induced rapid solidification of weld joint that reduces the chance of air escaping from the weld pool. Penerbit Universiti Teknikal Malaysia Melaka 2022 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/26197/2/DOCUMENT.PDF Abd Rahman, Md Nizam and Zulkipli, Nur Hidayah and Kasim, Mohd Shahir and Jamli, Mohamad Ridzuan and Budi, Esmar (2022) Impact of Argon gas shielding flow rate on the hardness of weld joint. Journal of Advanced Manufacturing Technology (JAMT), 16 (1). 01-10. ISSN 1985-3157 https://jamt.utem.edu.my/jamt/article/view/6273/3978
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
description Metal inert gas (MIG) welding technique is one of the most widely utilized permanent metal joining technique in various applications due to its adaptability towards automation. One of the critical process parameters in MIG is shielding gas flow rate. One of the main purposes of shielding gas is to prevent the formation of oxidation and porosity at the weld pool. However, study on the optimum level of shielding gas flow rate is lacking. This study investigated the impact of argon gas flow rate, as a shielding gas, on the weld zone hardness of a 3 mm thick mild steel plate. The flow rates of argon shielding gas were evaluated at five levels (0 SCFH, 15 SCFH, 30 SCFH, 45 SCFH, and 60 SCFH). Vickers hardness test was performed and an optical micrograph was captured for all samples. One-way ANOVA analysis was conducted to ascertain the statistical difference of hardness among the samples at a 95% confidence level. The results indicated that the argon flow rate has a significant positive impact on the hardness of the weld zones as the shielding gas flow rate increases from 0 to 45 SCFH. However, the hardness significantly dropped at 65 SCFH. The drop in hardness was attributed to an increase in the presence of porosity. It is postulated that the high shielding gas flow rate resulted in turbulence flow that promotes air entrapment in the weld joint during solidification. The high flow rate also induced rapid solidification of weld joint that reduces the chance of air escaping from the weld pool.
format Article
author Abd Rahman, Md Nizam
Zulkipli, Nur Hidayah
Kasim, Mohd Shahir
Jamli, Mohamad Ridzuan
Budi, Esmar
spellingShingle Abd Rahman, Md Nizam
Zulkipli, Nur Hidayah
Kasim, Mohd Shahir
Jamli, Mohamad Ridzuan
Budi, Esmar
Impact of Argon gas shielding flow rate on the hardness of weld joint
author_facet Abd Rahman, Md Nizam
Zulkipli, Nur Hidayah
Kasim, Mohd Shahir
Jamli, Mohamad Ridzuan
Budi, Esmar
author_sort Abd Rahman, Md Nizam
title Impact of Argon gas shielding flow rate on the hardness of weld joint
title_short Impact of Argon gas shielding flow rate on the hardness of weld joint
title_full Impact of Argon gas shielding flow rate on the hardness of weld joint
title_fullStr Impact of Argon gas shielding flow rate on the hardness of weld joint
title_full_unstemmed Impact of Argon gas shielding flow rate on the hardness of weld joint
title_sort impact of argon gas shielding flow rate on the hardness of weld joint
publisher Penerbit Universiti Teknikal Malaysia Melaka
publishDate 2022
url http://eprints.utem.edu.my/id/eprint/26197/2/DOCUMENT.PDF
http://eprints.utem.edu.my/id/eprint/26197/
https://jamt.utem.edu.my/jamt/article/view/6273/3978
_version_ 1769847404051300352
score 13.211869

Similar Items