Evaluation of Corrosion Characteristics on Welding Part of Leakage Water Pipe by Underwater Welding Electrode

수중용접봉으로 용접한 누수 배관 용접부위의 부식 특성 평가

The repair welding of small leakage parts on the water pipeline in engine room is often and important factor in standby and emergency condition in a ship. So, the purpose of this study is to evaluate the corrosion characteristics of welding part of leakage water pipe in case of some underwater welding electrodes. The corrosion current density between welding metal and base metal was considerably different according to used underwater welding electrodes. In case of DC welding, its corrosion characteristics was better than that of AC welding.