[1]张志明,高广俊,印 乐,等.埋弧焊管焊接接头背面导向弯曲失效原因分析[J].焊管,2021,44(7):59-64,68.[doi:10.19291/j.cnki.1001-3938.2021.07.012]
 ZHANG Zhiming,GAO Guangjun,YIN Le,et al.Failure Analysis of Back Guide Bending of Welded Joint of Submerged Arc Welded Pipe[J].,2021,44(7):59-64,68.[doi:10.19291/j.cnki.1001-3938.2021.07.012]
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埋弧焊管焊接接头背面导向弯曲失效原因分析()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
第44卷
期数:
2021年第7期
页码:
59-64,68
栏目:
经验交流
出版日期:
2021-07-28

文章信息/Info

Title:
Failure Analysis of Back Guide Bending of Welded Joint of Submerged Arc Welded Pipe
文章编号:
10.19291/j.cnki.1001-3938.2021.07.012
作者:
张志明高广俊印 乐汪 超
渤海石油装备江苏钢管公司,南京 210001
Author(s):
ZHANG Zhiming GAO Guangjun YIN Le WANG Chao
Bohai Equipment Jiangsu Steel Pipe Company, Nanjing 210001, China)
关键词:
埋弧焊管导向弯曲塑性变形热影响区软化应力集中
Keywords:
submerged arc welded pipe guided bending plastic deformation heat affected zone softening stress concentration
分类号:
TG115.54
DOI:
10.19291/j.cnki.1001-3938.2021.07.012
文献标志码:
B
摘要:
为了研究埋弧焊管焊接接头背面导向弯曲失效原因,采用宏观分析、金相试验、冲击试验、超声波和射线检测等手段,从焊材匹配、焊接热输入、塑性变形、试样制备、时效处理以及夹杂物等方面进行了分析和研究。结果表明,背弯焊缝开裂主要原因:一是焊接接头与母材强度不匹配,造成局部集中变形超过焊缝塑性变形极限;二是焊接热输入过大,内应力过大造成弯曲过程中焊缝表面龟裂。背弯焊趾开裂主要原因:一是热影响区金属软化,造成弯曲过程集中塑性变形超过该区域金属的塑性变形极限;二是局部管形不规则(如过大的噘嘴和焊缝余高),造成扩径和试样压平过程中在焊趾处产生强烈的应力集中。根据研究结果,建议制造商从原料订货技术协议要求、焊接工艺设计、试验检测过程控制及无损检测等多方面采取相应措施,解决弯曲失效问题。
Abstract:
In order to study the failure cause of back guided bending of submerged arc welded pipe joint, macro analysis, metallographic test, impact test, ultrasonic and radiographic testing were used to analyze and study the welding material matching, heat input, plastic deformation, sample preparation, aging and inclusions. The results show that the main reasons for back bend weld cracking are as follows: first, the strength of the welded joint does not match that of the base metal, resulting in the local concentrated deformation exceeding the plastic deformation limit of the weld; the second is that the welding heat input is too large, and the internal stress is too large, which causes the weld surface cracking in the bending process. The main reasons for the back bend toe cracking are as follows: first, the metal in the heat affected zone softens, resulting in the concentrated plastic deformation exceeding the plastic deformation limit of the metal in the zone; the second is the irregular shape of local pipe (such as excessive angular distortion and weld reinforcement), which results in strong stress concentration at the weld toe in the process of expanding and sample flattening. According to the research results, it is suggested that the manufacturer take corresponding measures from the requirements of the technical agreement for raw material ordering, welding process design, process control of test and detection and nondestructive testing to solve the bending failure.

参考文献/References:

[1] 美国石油学会. 管线钢管规范,第45版:API SPEC 5L[S]. 华盛顿,美国:美国石油学会出版业务部,2012.

[2] 全国石油天然气标准化技术委员会. 石油天然气工业管线输送系统用钢管:GB/T 9711—2011[S]. 北京:中国标准出版社,2012.
[3] American Society for Testing and Materials. Standard Test Methods and Definitions for Mechanical Testing of Steel Products:ASTM A370—2019[S]. West Conshohocken:ASTM Press,2019.
[4] 杜伟,荆松龙,李云龙,等. X70钢直缝埋弧焊管导向弯曲开裂的原因[J]. 机械工程材料,2012,36(10):97-100.
[5] JIA K N,GAO C R,DU L X,et al. Effect of simulated welding thermal cycle on microstructure and properties of HAZ for micro-calcium steel[J]. Research on Iron and Steel,2007,35(2):17-21.
[6] 尹士科. 焊接材料手册[M]. 北京:中国标准出版社,2010.
[7] 孙咸. 焊材冶金特性对不锈钢焊缝金属超低温韧性的影响(上)[J]. 金属加工(热加工),2011(20):30-31.
[8] 周雄. X70管线钢焊接接头热裂纹与冷弯性能研究[D]. 武汉:华中科技大学,2008.
[9] 葛彪,李国军,李文聪. 消除大型铸锻焊件残余应力的几种时效工艺方法比较[J]. 热加工工艺,2005(10):69-71,74.
[10] 何刚. 螺旋焊管焊接裂纹产生的原因及防控措施[J]. 现代焊接,2013(2):49-51.
[11] 曾德胜,王彬. 埋弧焊管导向弯曲变形测量与分析[J]. 焊管,2014,37(4):62-67.
[12] 叶泽刚. 逐步折弯成形原理及其应用研究[D]. 武汉: 武汉理工大学,2002.
[13] 张宏伟,魏微,黄骏,等. 中美弯曲试验标准对比分析研究[J]. 中国标准化,2020(11):239-245.
[14] 谢琦,王希东,张晓华,等. 关于焊接工艺评定中弯曲试验的体会[J]. 焊接,2005(1):33-34.
[15] 范利锋,梁培,王葛,等. 直缝焊管JCO成形非对称弯曲变形过程分析[J]. 塑性工程学报,2020,27(2):94-101.

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备注/Memo

备注/Memo:
收稿日期:2021-01-18
作者简介:张志明(1980—),男,硕士,高级工程师,现主要从事油气输送管及其副产品的压力加工、焊接、无损检测及理化检验等工作。
更新日期/Last Update: 2021-07-26