[1]胡美娟,闵希华,罗金恒,等.凸台焊接对HFW焊管性能的影响[J].焊管,2018,41(3):53-57.[doi:10.19291/j.cnki.1001-3938.2018.03.011]
　HU Meijuan,MIN Xihua,LUO Jinheng,et al.Influence of Boss-backing Welding on HFW Pipe[J].,2018,41(3):53-57.[doi:10.19291/j.cnki.1001-3938.2018.03.011]
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凸台焊接对HFW焊管性能的影响()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
41
期数:
2018年第3期
页码:
53-57
栏目:
经验交流
出版日期:
2018-03-28

文章信息/Info

Title:
Influence of Boss-backing Welding on HFW Pipe
文章编号:
10.19291/j.cnki.1001-3938.2018.03.011
作者:
胡美娟1; 闵希华2; 罗金恒1; 邵春明2; 张 杰2
1. 中国石油集团石油管工程技术研究院，西安 710077；
2. 中石油管道联合有限公司西部分公司， 乌鲁木齐 830013
Author(s):
HU Meijuan 1;  MIN Xihua 2;  LUO Jinheng 1;  SHAO Chunming 2;  ZHANG Jie 2
1. Tubular Goods Research center of CNPC, Xi’an 710077, China;
2. Petro China West Pipeline Company, Urumchi 830013, China
关键词:
站场阀室; HFW焊管; 凸台; 交叉焊缝; 焊接残余应力; 微观组织
Keywords:
station and valve chamber;  HFW pipe;  boss-backing;  cross weld;  welding residual stress;  microstructure
分类号:
TE973
DOI:
10.19291/j.cnki.1001-3938.2018.03.011
文献标志码:
B
摘要:
为解决阀门、仪表和法兰等安装过程中凸台焊机位置不当对HFW焊管整体性能影响的问题，研究了凸台直接焊接对HFW焊管原始残余应力、微观组织的影响。研究表明，HFW电阻焊管上整体残余应力值较小，直焊缝区域残余应力值低于管体区域；凸台焊接后，交叉焊缝附近直焊缝上的轴向和管体上环向残余应力值陡增了2.5和3.8倍，分别为444 MPa和433 MPa；凸台焊接对HFW焊管上表面的侵入宽度为15.167 mm，厚度为3.376 mm，侵入区域出现了链状贝氏体。综上所述，建议在凸台焊接时采用较小的焊接热输入。
Abstract:
In order to solve the influence of unsuitable location of boss-backing welding on overall performance of HFW pipe during valve, instrument and flange Installation, the influence of boss-backing welding on the residual stresses and microstructure of HFW pipe were studied. The results showed that the overall residual stresses of HFW pipe were relatively low. The Residual stress at the longitudinal weld region were lower than the pipe body region. After the boss-backing welding, the axial residual stress at the longitudinal weld and the hoop residual stress at the pipe body region near the cross weld were increased sharply to 2.5 and 3.8 times, respectively, they were 444 MPa and 433 MPa. The invaded width to the HFW pipe after welding was about 15.167 mm, and the depth was about 3.376 mm, and there was chain-typed bainite in invaded zone. It was suggested that small welding heat input was adopted for boss-backing welding.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期： 2017-09-19

作者简介： 胡美娟（1981—），女，高级工程师，2009年毕业于西北工业大学，现从事石油管焊接工作。

更新日期/Last Update: 2018-04-18