[1]靳海成,郭静薇,冯大勇,等.无涂层和带缺陷涂层X70钢焊接接头的腐蚀行为研究[J].焊管,2019,42(10):9-13.[doi:10.19291/j.cnki.1001-3938.2019.10.002]
 JIN Haicheng,GUO Jingwei,FENG Dayong,et al.Study on Corrosion Behavior of X70 Steel Welded Joint with Uncoated and Defective Coating[J].,2019,42(10):9-13.[doi:10.19291/j.cnki.1001-3938.2019.10.002]
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无涂层和带缺陷涂层X70钢
焊接接头的腐蚀行为研究
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
42
期数:
2019年第10期
页码:
9-13
栏目:
试验与研究
出版日期:
2019-10-28

文章信息/Info

Title:
Study on Corrosion Behavior of X70 Steel Welded Joint with
Uncoated and Defective Coating
文章编号:
10.19291/j.cnki.1001-3938.2019.10.002
作者:
靳海成郭静薇冯大勇王 敏
中国石油天然气管道科学研究院有限公司, 河北 廊坊 065000
Author(s):
JIN Haicheng GUO Jingwei FENG Dayong WANG Min
China Petroleum Pipeline Research Institute Co., Ltd.. langfang, Hebei, China, 065000
关键词:
腐蚀X70钢环焊缝涂层
Keywords:
corrosion X70 steel girth weld coating
分类号:
TG113.231
DOI:
10.19291/j.cnki.1001-3938.2019.10.002
文献标志码:
A
摘要:
为了有效延长海洋管道的使用寿命,分别采用自动焊和焊条电弧焊工艺进行了管道环焊缝焊接,并对无涂层和带缺陷涂层的管道环焊缝焊接接头的腐蚀行为进行了研究。研究结果表明,无涂层情况下,自动焊和焊条电弧焊两种工艺焊接接头的腐蚀速率几乎相同;焊接接头涂层破损时,自动焊工艺的抗腐蚀性能整体优于焊条电弧焊工艺,且自动焊工艺的腐蚀集中在涂层破损面边界,焊条电弧焊的腐蚀除涂层破损界面外,焊缝位置也出现点蚀坑。研究结果对海洋管道焊接工艺的制定有一定的指导意义。
Abstract:
In order to prolong the service life of offshore pipelines effectively, the girth weld of pipeline was welded by automatic welding and electrode arc welding, and the corrosion behavior of pipeline girth welds with uncoated and defective coating were studied. The experimental results show that the corrosion rates of the welded joints by automatic welding and electrode arc welding are almost the same without coating. When the coating of the welded joint is damaged, the corrosion resistance of the automatic welding process is better than that of the electrode arc welding process, and the corrosion of the automatic welding process concentrates on the boundary of the damaged coating surface. In addition to the damaged interface of the coating, pitting corrosion pits also appear in the weld of the electrode arc welding. The results are significant for the formulation of welding technology of offshore pipelines.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2018-10-26
作者简介: 靳海成(1977—), 高级工程师,焊接技术专家, 现从事长输管道与储罐工程焊接技术研究、 焊接工艺及设备评价、 施工现场服务、 材料性能测试等工作。
更新日期/Last Update: 2019-11-26