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Numerical Simulation of Temperature Field in Multi-Pass Compound Groove Weld for High Strength Pipeline Steel X80

[+] Author Affiliations
Lige Tong, Qilan Kang, Li Wang

University of Science and Technology Beijing, Beijing, China

Yongli Sui, Shiwu Bai

Pipeline Research Institute of China National Petroleum Corporation, Langfang, Hebei, China

Paper No. IHTC14-22516, pp. 891-893; 3 pages
doi:10.1115/IHTC14-22516
From:
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 2
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4937-8 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME

abstract

Welding is a process for joining similar metals. Heat input and interpass temperature are important technical parameters that affect the welding temperature distribution field. 2D simulation of multi-pass compound groove of welding process for X80 pipeline steel is carried out by finite element software ANSYS, in which the distribution of T8/5 of welding filling layers is analyzed. The results show that the effect of heat input to T8/5 is significant. The T8/5 becomes longer with the increase of the heat input. Because of the obvious preheat influence of the preceding pass to the following, the T8/5 becomes longer with the increase of the weld pass quantity. When interpass temperature is equal to preheat temperature, the difference of the T8/5 on filling layer is tended to be insignificant. The T8/5 will be located within a reasonable range by choosing the appropriate heat input and interpass temperature.

Copyright © 2010 by ASME

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