INFLUENCE OF SHIELDING GAS ON GMA WELDING OF Al ALLOYS

Kolarik, Ladislav; Kovanda, Karel; Kolaříková, Marie; Vondrous, Petr; Kopriva, Jaroslav

doi:10.17973/mmsj.2013_12_201318

Cited by 3 publications

(4 citation statements)

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“…Penggunaan gas pelindung berfungsi untuk melindungi cairan logam las dari udara lingkungan sekitarnya untuk mencegah terjadinya proses oksidasi antara logam las dengan udara luar. Semakin bertambahnya laju alir gas pelindung dapat meningkatkan kedalaman pengelasan, lebar pengelasan dan sedikit cacat porositas [1] . Las Tungsten Inert Gas (TIG) menggunakan elektroda tungsten permanen yang berguna untuk penghantar arus listrik dari sumber daya ke logam induk sehingga menghasilkan busur nyala listrik yang mempunyai energi panas yang cukup tinggi.…”

Section: Pendahuluanunclassified

“…Ladislav Kolarik melakukan penelitian tentang pengaruh dari gas pelindung dalam pengelasan TIG pada aluminium padaun. Dari hasil penelitian tersebut didapat bahwa semakin besar laju alir gas pelindung dapat meningkatkan kedalaman pengelasan, lebar pengelasan dan sedidikit cacat porositas [1] . Pada penelitian ini bertujuan untuk mengetahui pengaruh laju alir gas pelindung terhadap kekuatan tarik dan kejut pada Sambungan Las TIG Baja Galvanis dan Aluminium 5052 Dengan Filler Al-Si 4043.…”

Section: Pendahuluanunclassified

“…Dari grafik didapat kecenderungan meningkat seiring penambahan laju alir gas pelindung. Semakin besar laju alir gas pelindung yang digunakan dapat melindungi pengelasan dari gas O2 N2 H2 yang berada di atmosfere [1] sehingga mengurangi cacat porositas pada pengelasan sehingga meningkatkan kekuatan kejutnya. Dengan menggunakan gas argon yang memiliki densitas yang lebih tinggi dari udara maka sangat efektif untuk dapat mencegah udara masuk pada saat pengelasan [3].…”

Section: Analisis Pengaruh Laju Alir Gas Pelindung Terhadap Kekuatan ...unclassified

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Pengaruh Laju Alir Tungsten in-Ert Gas Terhadap Kekuatan Tarik Dan Kejut Pada Sambungan Las Tig Baja Galvanis Dan Alu-Minium 5052 Dengan Filler Al-Si 4043

Bintarto

Ma’arif

Widhiyanuriyawan

et al. 2023

JRM

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This study aims to determine the effect of the protective gas flow rate on the tensile and shock strength of welded joints of dissimilar metals, namely aluminum 5052 – galvanized steel with Al-Si 4043 filler using argon gas as a shielding gas. The protective gas flow rate parameters used in this study were 14, 17, and 20 liters/minute with a current of 80 A. The results showed that the higher the flow rate of the shielding gas, the lower the porosity defects that occurred in the welding results, resulting in higher tensile and shock strength values. Based on the analysis through the results of penetrant testing, it shows that the addition of the protective gas flow rate is given to reduce the porosity defects in the welding area. The surface area experiencing porosity decreases with the addition of the protective gas flow rate of 14, 17, and 20 liters/minute of 59.748%, 50.918%, and 48.857% respectively. The highest tensile strength was obtained from welding with a protective gas flow rate of 20 liters/minute of 20.01 MPa, then a protective gas flow rate of 17 liters/minute of 16.32 MPa, and the lowest at a protective gas flow rate of 14 liters/minute of 10 ,44 MPa. The highest shock strength is obtained from welding with a protective gas flow rate of 20 liters/minute of 0.5644 mJ/mm2, then a protective gas flow rate of 17 liters/minute of 0.4048 mJ/mm2, and the lowest is a gas flow rate protection 14 liters/minute of 0.2981 mJ/mm2.

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Section: Pendahuluanunclassified

Section: Analisis Pengaruh Laju Alir Gas Pelindung Terhadap Kekuatan ...unclassified

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Pengaruh Laju Alir Tungsten in-Ert Gas Terhadap Kekuatan Tarik Dan Kejut Pada Sambungan Las Tig Baja Galvanis Dan Alu-Minium 5052 Dengan Filler Al-Si 4043

Bintarto

Ma’arif

Widhiyanuriyawan

et al. 2023

JRM

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“…Selain material, elektroda juga sangat mempengaruhi keberhasilan proses las, adapun salah satu yang banyak dipergunakan dalam las pada umumnya adalah filler jenis Al-Si 4043. Filler Al-Si 4043 merupakan salah satu jenis filler yang mudah ditemukan di pasaran dan sering digunakan dalam proses pengelasan [7]. Selain itu Logam pengisi 4043 akan meningkatkan kandungan silikon logam las sehingga mampu meningkatkan kemampuan dan kualitas hasil las [8].…”

Section: Pendahuluanunclassified

Analisa Struktur Mikro dan Kekuatan Bending Sambungan Las TIG dengan Perbedaan Kuat Arus Listrik pada Logam Tak Sejenis Aluminium Paduan 5052-Baja Galvanis dengan Filler Al-Si 4043

Bintarto

Widodo

Raharjo

et al. 2020

JRM

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This study aims to determine the various effect of heat input due to varied electric current on microstructure of the weld joints and the bending strength of 2 dissimilar metals (aluminum alloy 5052 and galvanized steel) with Al-Si 4043 as filler. This experimental research was worked out by varying the strength of the current which can then be calculated into a heat input. The current inputs applied were 30.8 J / mm (70A), 35.2 J / mm (80A) and 39.6 J / mm (90A) while the protective gas flow rate used is 14 liters / minute. This study showed that the increase in heat input greatly affects the shape of the weld area microstructure, i.e. the microstructure and bending strength. Greater heat input due to higher current can melt larger area, so that the join process occured better. The highest bending strength at 9.05 Mpa was achieved for heat input at 39.6 J / mm or strong current of 90 A. The weakest bending strength at 8.88 Mpa was achieved for heat input at 35.2 J / mm or a strong current of 70 A.

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Microstructure and Mechanical Properties of Welding Repair of 5083 Aluminum Alloy

Sukawet

Muangjunburee

2015

KEM

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The repair welding of aluminum alloy 5083 was studied using Gas Metal Arc welding (GMAW) process. The effect of heat cycles from welding was investigated in some details. Butt joints of 6 mm and 3 mm thick were welded with 5356 filler metal. Then weld was removed by grinding and repeatedly welded again for 2 times. After each repair weld, the weld was assessed by macrostructure, microstructure and mechanical tests. The results revealed porosities of all weld samples. The repair welds indicated lower tensile strength compared with the new welds. In addition, all tensile strengths were much lower than the base metal. All samples were fractured at the weld metal.

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INFLUENCE OF SHIELDING GAS ON GMA WELDING OF Al ALLOYS

Cited by 3 publications

References 0 publications

Pengaruh Laju Alir Tungsten in-Ert Gas Terhadap Kekuatan Tarik Dan Kejut Pada Sambungan Las Tig Baja Galvanis Dan Alu-Minium 5052 Dengan Filler Al-Si 4043

Pengaruh Laju Alir Tungsten in-Ert Gas Terhadap Kekuatan Tarik Dan Kejut Pada Sambungan Las Tig Baja Galvanis Dan Alu-Minium 5052 Dengan Filler Al-Si 4043

Analisa Struktur Mikro dan Kekuatan Bending Sambungan Las TIG dengan Perbedaan Kuat Arus Listrik pada Logam Tak Sejenis Aluminium Paduan 5052-Baja Galvanis dengan Filler Al-Si 4043

Microstructure and Mechanical Properties of Welding Repair of 5083 Aluminum Alloy

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