Peningkatan Kedalaman Penetrasi Las Stainless Steel 304 dengan Medan Magnet Eksternal pada Pengelasan Autogenous Tungsten Inert Gas Welding

Haikal, Haikal; Chamim, Moch; Andriyansyah, Deni; Wiyono, Apri; Baskoro, Ario Sunar; Isnarno, Isnarno

doi:10.21776/ub.jrm.2021.012.01.10

Cited by 2 publications

(2 citation statements)

References 7 publications

(12 reference statements)

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“…14. No.1 sejak lama ada, namun penelitian terkait pengelasan terus dikembangkan dengan tujuan agar efektivitas dan kinerja terus meningkat [3] . Proses pengelasan yang paling umum dijumpai adalah dengan metode GTAW (Gas Tungsten Arc Welding) akan tetapi pengelasan jenis ini sangat mahal jika dibandingkan dengan pengelasan SMAW (Shielded Metal Arc Welding) yang memiliki nilai ekonomi dan kualitas pengelasan yang sangat rendah, umumnya pengelasan SMAW sering terjadi cacat penetrasi karena tidak di lindungi gas, maka gabungan ke dua jenis ini di lakukan pengelasan pada beberapa sambungan tipe las agar dapat tutupi kekurangan dari tiap-tiap las [4] [5] .…”

Section: Pendahuluanunclassified

Analisis Pengaruh Arus Pada Pengelasan Bertingkat (Multilayer Welding) Terhadap Struktur Mikro, Kekerasan Dan Kuat Tarik Sambungan Material Astm A106

Atmoko

Lopo²,

Chamim

et al. 2023

JRM

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This aims of this study to determine the effect of multilayer welding on ASTM A106 type carbon steel pipe material on the characteristics of the microstructure, hardness and maximum tensile strength of the material. ASTM A106 type carbon steel pipe is used as a raw material for welding using the Shielded Metal Arc Welding (SMAW) method. Welding on material joints is carried out in three layers (multilayer welding), namely the root pass, hot pass, and capping layers. There are two variations of welding specimens carried out in this study, namely in specimen 1 the currents used were 60, 70 and 80 A while in specimen 2 the currents used were 70, 80 and 90 A. To determine the effect of current variations on each specimen carried out three include Vickers Testing, microstructure testing and tensile testing. The results show that the base metal area is dominated by the ferrite phase, which indicates that the area has low hardness while the weld shows more perlite phase than ferrite besides the grain size is smaller and denser; this indicates that the hardness level will increase when compared to base metal. The results of the hardness test for all variations of the specimen concluded that the highest hardness value was in the weld. From the tensile test, it can be concluded that specimen 2 has a greater tensile strength of 2.5% when compared to specimen 1.

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Section: Pendahuluanunclassified

Analisis Pengaruh Arus Pada Pengelasan Bertingkat (Multilayer Welding) Terhadap Struktur Mikro, Kekerasan Dan Kuat Tarik Sambungan Material Astm A106

Atmoko

Lopo²,

Chamim

et al. 2023

JRM

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“…This welding process is well-suited for fragile metals, making it possible to obtain high-quality welds (Dharma et al, 2022). This process uses argon shielding gas with or without applying pressure (Haikal et al, 2021). This process can be used with or without the addition of filler metal.…”

Section: Introductionmentioning

confidence: 99%

Metoga GTAW Welding Joint Strength Study For Aisi 1045 Application Of Milling Tools

W¹,

Waluyo²

2023

JIIT

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The welding process is a permanent connection process for metal materials using heat energy. The GTAW (Gas Tungsten Arc Welding) welding method is carried out on AISI 1045 steel material with a solid round shape, which has the characteristics and properties of the material slightly above low carbon steel. The welding process was carried out based on AWS A5.18 standard specifications, in this study. by varying the welding amperage between 70, 90, and 110 amperes as well as the ER70S-G series electrodes.To check the results of the welding with the amperage variation, perform tensile testing with standard ASTM A-370 testing, hardness testing using the Vickers method with standard ASTM E-92 testing, microstructure inspection, and grain size calculations as a control for the results of the hardness test. The focus of testing and inspection is carried out in three influential areas, namely, areas of weld metal, HAZ (heat-affected zone), and base metal.The results of this study show that for 70 A welding amperage, the tensile test results in all samples breaking in the weld metal area. While welding amperage 90A broke two samples in the weld metal area, welding amperage 110A broke one sample in the weld metal area. For the results of the hardness test at 110 A amperes, the hardness ratio in the weld metal area to the HAZ area shows that the difference in hardness is not too large compared to the two amperes used, so a welding amperage of 110 A can be recommended. While the results of the microstructure examination in the weld metal area were dominated by pearliet and martensite with a little bainite, the hardness results in the weld metal area were harder compared to the HAZ area and base metal. Likewise, the results of grain size calculations using the Heyn method for regions with higher hardness make the grain sizes appear denser and smaller.

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Peningkatan Kedalaman Penetrasi Las Stainless Steel 304 dengan Medan Magnet Eksternal pada Pengelasan Autogenous Tungsten Inert Gas Welding

Cited by 2 publications

References 7 publications

Analisis Pengaruh Arus Pada Pengelasan Bertingkat (Multilayer Welding) Terhadap Struktur Mikro, Kekerasan Dan Kuat Tarik Sambungan Material Astm A106

Analisis Pengaruh Arus Pada Pengelasan Bertingkat (Multilayer Welding) Terhadap Struktur Mikro, Kekerasan Dan Kuat Tarik Sambungan Material Astm A106

Metoga GTAW Welding Joint Strength Study For Aisi 1045 Application Of Milling Tools

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