Effect of local heat treatment on residual stresses in an in-service repair welded pipeline

Hongbo Zhang; Yongxin Lu; Fengping Yang; Qiang Bai; Yinglai Liu; Xiaoyong Zhang; Hongfeng Feng

doi:10.1515/mt-2022-0034

Article

Effect of local heat treatment on residual stresses in an in-service repair welded pipeline

Hongbo Zhang
Hongbo Zhang, worked in the Beijing Longshine Oil Tubular Technology Co. Ltd, China. Currently, he have the advanced certificate of nondestructive testing (ultrasonic, radiographic, magnetic particle, penetration) and other technical qualification certificates, and have published the dozens of papers on equipment supervision and NDT.
, Yongxin Lu
Yongxin Lu, born 1986, graduated with a doctor degree from the School of Materials Science and Engineering, Tianjin University, China, in 2017. Then, he worked in the School of Materials Science and Engineering, Xi’an Shiyou University, China. Currently, he is lecturer and his main research areas are control and simulation of welding deformation and friction stir welding.
, Fengping Yang
Fengping Yang, born in 1982, graduated from the Aviation College, Northwest University of Technology. Then, he worked in the CNPC Tubular Goods Research Center.
, Qiang Bai
Qiang Bai, worked in the Beijing Longshine Oil Tubular Technology Co. Ltd, China. Currently, he is engaged in the development and transformation of oil pipe technology, experimental research, etc.
, Yinglai Liu
Yinglai Liu, worked in the CNPC Tubular Goods Research Center, and mainly engaged in X90/X100 induction bend, tee and other new product development research, standardization, failure analysis and engineering technical services.
, Xiaoyong Zhang
Xiaoyong Zhang, worked in the School of Materials Science and Engineering, Xi’an Shiyou University, China. Currently, he is engaged in the teaching and research of microstructure and performance control, welding, corrosion and protection of petroleum engineering materials.
and Hongfeng Feng
Hongfeng Feng, born in 1995, graduated from the school of materials science and engineering, Guilin University of technology, China in 2020. Then he studied for a master’s degree at Xi’an Shiyou University. At present, he is a first grade graduate student. His main research interest is the enhancement of corrosion resistance of aluminum alloy welds.

Published/Copyright: September 6, 2022

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From the journal Materials Testing Volume 64 Issue 9

Abstract

The multi-pass fillet welds of casing pipe were welded onto the in-service pipeline, which is widely used in pipeline repairs. However, the residual stress of repairing welded joints is larger, and it is easy to cause cracks in the heat-affected zone. In this paper, the local heat treatment was used to adjust the residual stress of the repaired welded joint of the in-service pipeline. The results show that the local heat treatment is very useful for reducing the residual stress of the repair welding joint of the in-service pipeline.

Keywords: blind-hole method; casing pipe; pipe repair welding; residual stress

Corresponding author: Qiang Bai, CNPC Tubular Goods Research Institute, Xi’an, China; and Beijing Longshine Oil Tubular Technology Co. Ltd, Beijing, China, E-mail: baiqiang@cnpc.com.cn

Funding source: National Pipe Network Scientific Research and Technology Development Project

Award Identifier / Grant number: WZXGL202105

Funding source: Natural Science Basic Research Program of Shaanxi

Award Identifier / Grant number: 2021JQ-594

About the authors

Hongbo Zhang

Hongbo Zhang, worked in the Beijing Longshine Oil Tubular Technology Co. Ltd, China. Currently, he have the advanced certificate of nondestructive testing (ultrasonic, radiographic, magnetic particle, penetration) and other technical qualification certificates, and have published the dozens of papers on equipment supervision and NDT.

Yongxin Lu

Yongxin Lu, born 1986, graduated with a doctor degree from the School of Materials Science and Engineering, Tianjin University, China, in 2017. Then, he worked in the School of Materials Science and Engineering, Xi’an Shiyou University, China. Currently, he is lecturer and his main research areas are control and simulation of welding deformation and friction stir welding.

Fengping Yang

Fengping Yang, born in 1982, graduated from the Aviation College, Northwest University of Technology. Then, he worked in the CNPC Tubular Goods Research Center.

Qiang Bai

Qiang Bai, worked in the Beijing Longshine Oil Tubular Technology Co. Ltd, China. Currently, he is engaged in the development and transformation of oil pipe technology, experimental research, etc.

Yinglai Liu

Yinglai Liu, worked in the CNPC Tubular Goods Research Center, and mainly engaged in X90/X100 induction bend, tee and other new product development research, standardization, failure analysis and engineering technical services.

Xiaoyong Zhang

Xiaoyong Zhang, worked in the School of Materials Science and Engineering, Xi’an Shiyou University, China. Currently, he is engaged in the teaching and research of microstructure and performance control, welding, corrosion and protection of petroleum engineering materials.

Hongfeng Feng

Hongfeng Feng, born in 1995, graduated from the school of materials science and engineering, Guilin University of technology, China in 2020. Then he studied for a master’s degree at Xi’an Shiyou University. At present, he is a first grade graduate student. His main research interest is the enhancement of corrosion resistance of aluminum alloy welds.

Acknowledgment

The authors thank the referees of this study for their valuable and very helpful comments.

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: The authors wish to acknowledge the financial supported by National Pipe Network Scientific Research and Technology Development Project (Research on failure mechanism for girth weld of high steel pipeline, NO. WZXGL202105), and Natural Science Basic Research Program of Shaanxi (Program No.: 2021JQ-594).
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Published Online: 2022-09-06

Published in Print: 2022-09-27

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Articles in the same Issue

https://doi.org/10.1515/mt-2022-0034

Keywords for this article

blind-hole method; casing pipe; pipe repair welding; residual stress