Volume 20, Issue 3 (March 2020)                   Modares Mechanical Engineering 2020, 20(3): 739-750 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Rajabi M, Hashemi S. Numerical Simulation of Submerged Spiral Arc Welding on API X70 Gas Transmission Steel Pipe. Modares Mechanical Engineering 2020; 20 (3) :739-750
URL: http://mme.modares.ac.ir/article-15-22394-en.html
1- Mechanical Engineering Department, University of Birjand, Birjand, Iran
2- Mechanical Engineering Department, University of Birjand, Birjand, Iran , shhashemi@birjand.ac.ir
Abstract:   (3941 Views)
Welding residual stresses decrease designing stress in natural gas transmission pipes with large diameter under high internal pressure. The outside diameter and wall thickness of API X70 steel in this research are 1423 and 19.8 millimeter. Hole drilling is the most common technique in order to measure residual stresses. Because of large diameter of this pipe, its transportation to conduct hole drilling test is a big problem so cutting a finite sample is desired. In this study standard dimension of this sample plate is analyzed and simulation of welding process is done from which and residual stresses in different directions are obtained. Residual stresses in the thickness direction is presented for the first time. The results showed separating a finite sample with the size of 320×440 millimeter is appropriate to do hole drilling test. The location and amount of the maximum residual stress is evaluated and compared for both simulation and experimental samples. Variation in hoop and longitudinal residual stresses on both internal and external surfaces of pipe samples are investigated. Also validation of simulation results with the experimental results of the same pipe is perfomed. Maximum residual stress (460MPa) is measured on inner surface of the pipe (96 percent of yield stress) which is reduced to 200MPa (42 percent of yield stress) after hydrostatic test. Because residual stress after hydrostatic test is lower than half of yield stress, hole drilling technique is validated after hydrostatic test.
Full-Text [PDF 1599 kb]   (1447 Downloads)    
Article Type: Original Research | Subject: Casting
Received: 2018/06/25 | Accepted: 2019/05/23 | Published: 2020/03/1

References
1. Schajer GS. Residual stresses: Measurement by destructive testing. International Journal of Materials Science and Engineering. 2016;2(1):1-10. [Link] [DOI:10.1016/B978-0-12-803581-8.03039-3]
2. Majzoobi GH, Seifi R, Ali-akbar S. Exprimental and numerical study of temperature distibution and determination of residual stresses due to welding of plates. Journal of Modeling in Engineering. 2012;9(27):49-59. [Persian] [Link]
3. Sattari-Far I, Farahani MR. Effect of the weld groove shape and pass number on residual stresses in butt-welded pipes. International Journal of Pressure Vessels and Piping. 2009;86(11):723-731. [Link] [DOI:10.1016/j.ijpvp.2009.07.007]
4. Forouzan MR, Mirfalah Nasiri SM, Mokhtari A, Heidari A, Golestaneh SJ. Residual stress prediction in submerged arc welded spiral pipes. Materials & Design. 2012;33:384-394. [Link] [DOI:10.1016/j.matdes.2011.04.016]
5. Nakhodchi S, Shokuhfar A, Akbari Iraj S, Rezazadeh H. Numerical and Experimental study of temperature and residual stress in multi-pass welding of two stainless steel plates having different. Modares Mechanical Engineering. 2014;14(9):81-89. [Persian]. [Link]
6. Sabokrouh M, Hashemi SH, Farahani MR. Experimental determination of residual stresses in multi-pass girth welding of thermo-mechanical steel pipe. Journal of Applied and computational Sciences in Mechanics. 2013;25(2 Suppl 10):111-120. [Persian] [Link]
7. Charkhi M, Akbari D. Application of pre-heating in the reduction of residual stress in the repair welds of steel pipes. Modares Mechanical Engineering. 2018;17(2):1-10. [Persian] [Link]
8. Qiang B, Yadong L, Yao C, Wang X. Through-thickness welding residual stress and its effect on stress intensity factor for semi-elliptical surface cracks in butt-welded steel plate. Engineering Fracture Mechanics. 2018;193:17-31. [Link] [DOI:10.1016/j.engfracmech.2018.02.016]
9. Hashemi SH, Mohammadyani D. Characterisation of weldment hardness, impact energy and microstructure in API X65 steel. International Journal of Pressure Vessels and Piping. 2012;98:8-15. [Link] [DOI:10.1016/j.ijpvp.2012.05.011]
10. Withers PJ, Bhadeshia HKDH. Residual stress, part 1 - measurement techniques. Materials Science and Technology. 2001;17(4):355-365. [Link] [DOI:10.1179/026708301101509980]
11. Breakthrough Strategy Committee. New joining technology for metal pipe in the construction industry. Unknown City Publisher: Breakthrough Strategy Committee; 2003. [Link]
12. Nezamdost MR, Nekouie Esfahani MR, Hashemi SH, Mirbozorgi SA. Investigation of temperature and residual stresses field of submerged arc welding by finite element method and experiments. The International Journal of Advanced Manufacturing Technology. 2016;87(1-4):615-624. [Link] [DOI:10.1007/s00170-016-8509-4]
13. Huang X, Liu Z, Xie H. Recent Progress in residual stress measurement techniques. Acta Mechanica Solida Sinica. 2013;26(6):570-583. [Link] [DOI:10.1016/S0894-9166(14)60002-1]
14. ASTM International. ASTM E837-13a, standard test method for determining residual stresses by the hole-drilling strain-gage method. Volume 03.01. West Conshohocken: ASTM International; 2013. [Link]
15. Sedighi M, Nezamnezhad R. Effect of peak positioning method on accuracy of X-Ray diffraction residual stress measurement. Exprimental Techniques. 2016;40(1):295-302. [Link] [DOI:10.1007/s40799-016-0033-9]
16. Masoumi M, Herculano LFG, Abreu HFGd. Study of texture and microstructure evaluation of steel API 5L X70 under various thermomechanical cycles. Materials Science & Engineering: A. 2015;639:550-558. [Link] [DOI:10.1016/j.msea.2015.05.020]
17. American Water Work Association. C200-75: AWWA standard for steel water pipe 6 inches and larger. Denver: AWWA; 1975. [Link]
18. Iranian Petroleum Standard. Material and eqipment standard for line pipe, IPS-M-PI-190. 2nd Edition. Tehran: Iranian Petroleum Standards; 2004. [Link]

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.