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Underwater Wet Repair Welding of API 5L X65M Pipeline Steel

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.

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DOI:
Digital Object Identifier (open in new tab) 10.1515/pomr-2017-0038
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Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
Polish Maritime Research no. 24, pages 188 - 194,
ISSN: 1233-2585
Language:
English
Publication year:
2017
Bibliographic description:
Rogalski G., Fydrych D., Łabanowski J.: Underwater Wet Repair Welding of API 5L X65M Pipeline Steel// Polish Maritime Research. -Vol. 24, iss. S1(93) (2017), s.188-194
DOI:
Digital Object Identifier (open in new tab) 10.1515/pomr-2017-0038
Verified by:
Gdańsk University of Technology

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