<abstract xmlns="http://www.w3.org/1999/xhtml"><p> This paper presents results of the research of effect of polymer insulation of pipeline made of API 5L X65M steel as well as underwater wet welding parameters on properties of joints made by covered electrodes. Effect of heat input on structure and hardness of joints during repair of underwater pipeline was analyzed. Welding defects like microcracks, micro-lacks of fusion, slag inclusions, as well as HAZ hardness increase over an assumed acceptance criterion for welded joints in pipes without anticorrosion polymer insulation, were identified. A significant effect of polimer insulation on structure and properties of welded joints, was found.</p></abstract>

This paper presents results of the research of effect of polymer insulation of pipeline made of API 5L X65M steel as well as underwater wet welding parameters on properties of joints made by covered electrodes. Effect of heat input on structure and hardness of joints during repair of underwater pipeline was analyzed. Welding defects like microcracks, micro-lacks of fusion, slag inclusions, as well as HAZ hardness increase over an assumed acceptance criterion for welded joints in pipes without anticorrosion polymer insulation, were identified. A significant effect of polimer insulation on structure and properties of welded joints, was found.

Underwater Wet Repair Welding of API 5L X65M Pipeline Steel

Polish Maritime Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Underwater Wet Repair Welding of API 5L X65M Pipeline Steel"}

This paper presents results of the research of effect of polymer insulation of pipeline made of API 5L X65M steel as well as underwater wet welding parameters...

Underwater Wet Repair Welding of API 5L X65M Pipeline Steel

Article Category: Special Issue Title: Coastal, Offshore and Ocean Engineering

Published Online: May 23, 2017

Page range: 188 - 194

DOI: https://doi.org/10.1515/pomr-2017-0038

Keywords
underwater welding, wet welding, underwater pipeline, API 5L X65M steel

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Underwater Wet Repair Welding of API 5L X65M Pipeline Steel

Article Category: Special Issue Title: Coastal, Offshore and Ocean Engineering

Published Online: May 23, 2017

Page range: 188 - 194

DOI: https://doi.org/10.1515/pomr-2017-0038

Keywordsunderwater welding, wet welding, underwater pipeline, API 5L X65M steel

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
underwater welding, wet welding, underwater pipeline, API 5L X65M steel