Effect of Electrode Type for SMAW Welding on ASTM A36 Steel to Reduce Bio-corrosion Rate in Marine Environment

Herman Pratikno, Harmin Titah, Muhammad Azdkar

2018

Abstract

The construction of the maritime industry, especially the manufacture of offshore building, at the moment mostly use the technique of metal welding. Weld joints on steel materials cannot be separated with the corrosion. Corrosion can cause a decrease in strength of materials and damage to construction. Corrosion is the degradation of metal caused by an electrochemical reaction between the metal with the surrounding environment. One of the causes of corrosion was bacteria, it was called as bio-corrosion. The bacteria live in the marine environment were widespread in their habitat and form a colony and then stick on the metal surface in the form of a thin layer. The aim of the research was to determinate the corrosion rate of the weld type SMAW on steel ASTM A36 with variations of the electrode. The variations of the electrode were AWS E6010, AWS E6013, AWS E6019. The corrosion test was conducted using immersion corrosion test method. The welded joints of materials were be soaked in artificial sea water with a salinity of 35‰ with Thiobacillus ferrooxidans addition and without bacteria addition as a control. The resistance on bio-corrosion rate was determined using weight loss method. The results showed the lowest of bio-corrosion rate with the addition of the Thiobacillus ferrooxidans on welded joints of materials was AWS E6013 compared with other electrodes. It reached 9.79757 mpy. Similarly, the lowest of corrosion rate (7.48178 mpy) without Thiobacillus ferrooxidans addition was AWS E6013. Based on microstructure results, uniform and pitting corrosion occurred on all welded joint specimens with the addition of bacteria or without the addition of bacteria. However, the corrosion rates were different. It indicated that AWS E6013 as a electrode on SMAW welding on ASTM A36 steel has a high effect to reduce the corrosion and bio-corrosion rate in marine environment.

Paper Citation

in Harvard Style

Pratikno H., Titah H. and Azdkar M. (2018). Effect of Electrode Type for SMAW Welding on ASTM A36 Steel to Reduce Bio-corrosion Rate in Marine Environment.In Proceedings of the 6th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management - Volume 1: ISOCEEN, ISBN 978-989-758-455-8, pages 165-169. DOI: 10.5220/0008649801650169

in Bibtex Style

@conference{isoceen18,
author={Herman Pratikno and Harmin Titah and Muhammad Azdkar},
title={Effect of Electrode Type for SMAW Welding on ASTM A36 Steel to Reduce Bio-corrosion Rate in Marine Environment},
booktitle={Proceedings of the 6th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management - Volume 1: ISOCEEN,},
year={2018},
pages={165-169},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0008649801650169},
isbn={978-989-758-455-8},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 6th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management - Volume 1: ISOCEEN,
TI - Effect of Electrode Type for SMAW Welding on ASTM A36 Steel to Reduce Bio-corrosion Rate in Marine Environment
SN - 978-989-758-455-8
AU - Pratikno H.
AU - Titah H.
AU - Azdkar M.
PY - 2018
SP - 165
EP - 169
DO - 10.5220/0008649801650169