钢管2026，Vol.55Issue(1)：25-32,8.DOI:10.19938/j.steelpipe.1001-2311.2026.1.25.32
海洋用X65MO钢级直缝埋弧焊管焊接接头强韧性研究
Study on Toughness of Welded Joint of X65MO SAWL Pipe for Marine Service
张婷婷 1张志明 2周瑞 2刘涛 2嵇峰 2丁光伟2
作者信息
- 1. 中国石油集团渤海石油装备制造有限公司,天津 300450||安徽工业大学,安徽 马鞍山 243002
- 2. 中国石油集团渤海石油装备制造有限公司,天津 300450
- 折叠
摘要
Abstract
Addresses the special requirements for the longitudinal tensile properties of the weld seam and the impact toughness of the welded joint of the X65MO SAWL pipe as made by a certain project,the feasibility and rationality of the manufacturing process for the said pipe are experimentally analyzed.Based on the study of the regularity associated with the influence by different wire matches on the longitudinal tensile properties of the pipe's weld seam,it is revealed that when the longitudinal yield strength of the weld seam is reduced to the level of that of the base metal,it will probably cause cracking of the welded joint during the guided bending process,which would negatively affect the comprehensive mechanical properties of the steel pipe.Accordingly the embrittlement problem of the weld seam and heat-affected zone(HAZ)at the center of the wall of the Φ711 mm×19.1 mm X65MO SAWL pipe for marine service is solved by means of taking such measures as proper base metal chemical composition design,limitation of the impurity elements in welding materials,proper control of flux alkalinity,and optimization of the welding process,etc.As a result,the average Charpy impact energy values of the weld seam and the HAZ of the said pipe at 0℃reach 160 J and 279 J respectively,while the corresponding shear area ratios are up to 63%and 91%respectively.关键词
直缝埋弧焊管/焊缝/纵向拉伸性能/焊接接头/夏比冲击韧性Key words
SAWL pipe/weld seam/longitudinal tensile property/welded joint/Charpy impact toughness引用本文复制引用
张婷婷,张志明,周瑞,刘涛,嵇峰,丁光伟..海洋用X65MO钢级直缝埋弧焊管焊接接头强韧性研究[J].钢管,2026,55(1):25-32,8.
