[1]张建勋.油气输送用大直径厚壁埋弧焊管残余应力及控制研究[J].焊管,2019,42(7):55-63,74.[doi:10.19291/j.cnki.1001-3938.2019.7.006]
 ZHANG Jianxun.Research on Residual Stress and Control of Large Diameter Thick Wall Submerged Arc Welded Pipe Used for Oil and Gas Transportation[J].,2019,42(7):55-63,74.[doi:10.19291/j.cnki.1001-3938.2019.7.006]
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油气输送用大直径厚壁埋弧焊管残余应力及控制研究()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
42
期数:
2019年第7期
页码:
55-63,74
栏目:
会议专辑
出版日期:
2019-07-28

文章信息/Info

Title:
Research on Residual Stress and Control of Large Diameter Thick Wall
Submerged Arc Welded Pipe Used for Oil and Gas Transportation
文章编号:
10.19291/j.cnki.1001-3938.2019.7.006
作者:
张建勋
西安交通大学 金属强度国家重点实验室, 西安 710049
Author(s):
ZHANG Jianxun
State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
关键词:
螺旋焊管直缝焊管残余应力盲孔法
Keywords:
sporal welded pipelongitudinal welded piperesidual stressblind hole method
分类号:
TG113
DOI:
10.19291/j.cnki.1001-3938.2019.7.006
文献标志码:
A
摘要:
针对油气输送用大直径厚壁埋弧焊管的残余应力问题,采用盲孔法测试了螺旋焊管和直缝焊管的残余应力,归纳了焊管制造过程中残余应力的演变规律,探讨了钢管制造过程中不同工序下残余应力的分布及其影响因素和控制方法。研究结果显示,板材矫直和钢管成型后的残余应力保持在150~200 MPa,且螺旋成型略大于直缝成型,成型过程的压下量对残余应力的影响有限;钢管焊接是在成型应力的拘束环境下进行的,直接影响焊缝的横向变形与残余应力,使得残余应力峰值不在焊缝中心,而是靠近焊缝区,螺旋焊管和直缝焊管的该区域残余应力均最高;制管过程中后续的水压试验、喷砂和防锈涂敷等工序,使残余应力得到大幅度降低,且分布更加均匀,螺旋焊管和直缝焊管残余应力峰值均保持在200 MPa左右,直缝管更低一些。研究表明,可以通过适当提高水压试验压力和涂敷温度的方法调节焊管残余应力。
Abstract:
In view of the residual stress of large diameter thick wall submerged arc welded pipe for oil and gas transportation, the blind hole method is used to measure the residual stress of the spiral welded pipe and longitudinal welded pipe. The evolution law of the residual stress during the manufacturing process of welded pipe is summarized, and the distribution, influencing factors and control methods of residual stress in different processes of the pipe manufacturing are discussed. The results show that the residual stresses of the straightening plate and the forming steel pipe are maintained at 150~200 MPa, and the residual stress of spiral weld forming is slightly larger than that of longitudinal weld forming. The influence of the press quantity on the residual stresses is limited during the forming process. Pipe welding is carried out under the restrained environment of forming stress, which directly affects the transverse deformation and residual stress of the weld, so that the peak value of residual stress is not in the center of the weld, but near the weld zone, where the residual stress of the spiral welded pipe and the longitudinal welded pipe is the highest. The peak value of residual stress of the spiral welded pipe and the longitudinal welded pipe are kept at about 200 MPa, and the residual stress of the longitudinal welded pipe is lower than that of spiral welded pipe. The research shows that the residual stress of welded pipe can be adjusted by properly increasing the pressure of hydraulic test and coating temperature.

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备注/Memo

备注/Memo:
收稿日期:2018-12-28
基金项目: 国家863计划课题“双金属层状结构复合管材技术研究”(项目编号2013AA031303HZ); 国家自然科学基金项目“钛合金飞机唇口蒙皮复杂轨迹激光深熔焊及其非线性疲劳损伤行为研究”(项目编号51375370)。
作者简介:张建勋(1958—),博士,二级教授,博士研究生导师,长期从事材料接合与连接、智能焊接与再制造、焊接结构可靠性等教学与研究工作。
更新日期/Last Update: 2019-08-16