Underwater Wet Repair Welding of API 5L X65M Pipeline Steel-Reference-Cited by-同舟云学术

Underwater Wet Repair Welding of API 5L X65M Pipeline Steel

Published:2017-04-25 Issue:s1 Volume:24 Page:188-194
ISSN:2083-7429
Container-title:Polish Maritime Research
language:en
Short-container-title:

Author:

Rogalski Grzegorz¹,Fydrych Dariusz¹,Łabanowski Jerzy¹

Affiliation:

1. Gdansk University of Technology, Gdansk , Poland

Abstract

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.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Ocean Engineering

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