Analisis Laju Korosi Sambungan Baja ASTM-A36 dengan Variasi Arus Pengelasan dalam Media Air Laut

Fauzi Widyawati, Widyawati

Abstract


Steel plate is a component that has an important role in making the design, especially on the hull of the ship. In the manufacture of shipbuilding, it is impossible to form without the welding process. Welded steel will experience changes in grain size differences which result in the emergence of anode and cathode areas which are potential for corrosion. This study aims to examine the corrosion behavior of ASTM A36 steel which has been welded using SMAW welding with variations in welding current in seawater medium for seven days. To study the corrosion properties of ASTM A36 steel welds, 15 specimens were welded with 5 variations of welding current, namely 60 A, 70 A, 80 A, 90 A, and 100 A. Corrosion was measured according to the ASTM G31-72 standard with the weight loss method. The results showed that the most efficient welding current was at a welding current of 70 A with an average corrosion rate of 20.8970 mpy. The highest corrosion rate was found in the welding current sample of 100 A with an average corrosion rate of 28.2327 mpy.


Keywords


ASTM A36, SMAW, Welding, Corrosion, Seawater,

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References


Ali, Muhammad Sulton., Herman Praktikno, Wimala L. Dhanistha. 2019. Analisis Pengaruh Variasi Sudut Blasting Dengan Coating Campuran Epoxy dan Aluminium Serbuk terhadap Kekuatan Adhesi, Prediksi Laju Korosi, dan Morfologi pada Plat Baja ASTM A36. JURNAL TEKNIK ITS Vol. 8, No. 1. ISSN: 2337-3539.

Ali, N dan Thalib, S. 2016. Perilaku Korosi Logam Las dan Daerah Terpengaruh Panas pada Baja A36. Proseding Seminar Nasional Teknologi Rekayasa (SNTR) III. Universitas Syiah Kuala. Banda Aceh.

ASTM International ASTM G31-72. 2004. Standart Practice for Laboratory Immersion Corission Testing of Metals. United states.

Azwinur dan Muhazir. 2019. Pengaruh Jenis Elektroda Pengelasan SMAW Terhadap Sifat Mekanik Material ss400. Jurnal Polimesin Vol 17 no 1. Politeknik Negeri Lhokseumawe. Banda Aceh.

Firmansyah,2020.Material Testing Uji Metalografi.Detech Material Testing Laboratory.

Lestari.I., Rodyatunnisa, Sakinah.N., Mardiah.2018.Studi Laju Korosi Logam Aluminium Dengan Penambahan Inhibitor Dari Ekstrak Daun Karamunting (Rhodomyrtus Tomentosa) Dalam Larutan NaOH. Jurnal Integrasi Proses. Vol. 7, No. 1. 26-31.

Manurung, V. A., Wibowo, A., Wibowo, Y.T., & Baskoro, S. Y.2020. Panduan. Metalografi. Jakarta: LP2M Politeknik Manufaktur Astra.

Ngatmin, Purwanto.H., Riwayati.I.2019.Analisa Laju Korosi Pada Plat Baja Lambung Kapal Dengan Umpan Anoda Karbon Aluminium.Momentum.Vol.15,No 2. Hal 174-179.

Pramono.B.B.2019.Penggunaan Dye Penetrant dan Ultrasonic Testing Pada Kolimator Nikel Murni. Metode Non-Destructive Testing.Skripsi.Universitas Sanata Dharma Yogyakarta.

Ridway, B., Kadir, A., Dedi, S. 2016. Analisis Pengaruh Arus Pengelasan Pada Sudut Elektroda 70ยบ Terhadap Sifat Kekerasan dan Struktur Mikro Baja Karbon Rendah Menggunakan JIG Welding. Jurnal Ilmiah Mahasiswa Teknik Mesin. Vol. 2. No 2. Pp. 186-191.

Syukran. 2009. Uji Cairan Penetran. Jurusan Teknik Mesin. Politeknik Negeri Lhokseumawe.

Veranika.R.M., Fauzie.M.A., Ali.H., Solihin.M.2019.Studi Pengaruh Variasi Elektroda E6013 dan E7018 Terhadap Kekuatan Tarik dan Kekerasan Pada Bahan Baja Karbon Rendah.Vol.7.No.2.Jurnal Desiminasi Teknologi.

Warman.2017.Analisis Faktor Penyebab Cacat Pengelasan.Jurnal Mekanikal.Vol.8.No.2. 730-736.

Wibowo, H. Ilman, M. Iswanto, T. Priyo. 2016. Analisa Heat Input Pengelasan Terhadap Distorsi, Struktur Mikro dan Kekuatan Mekanis Baja A36. Rekayasa Mesin. Vol 7 No 1.5-12.




DOI: http://dx.doi.org/10.31000/jt.v12i2.9555

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