Original scientific paper

Reduction of longitudinal axial residual stresses in near-root region of circumferential joint of steam pipeline in technological way

V. M. Prokhorenko ; National Technical University of Ukraine “Kyiv Polytechnic Institute”, Kyiv, Ukraine
A. O. Perepichay ; National Technical University of Ukraine “Kyiv Polytechnic Institute”, Kyiv, Ukraine
I. Mamuzić ; Croatian Metallurgical Society, Zagreb, Croatia
A. Čikić ; Technical College in Bjelovar, Croatia

Abstract

The paper proposes a variant for solving the problem of reduction of longitudinal residual stresses in near-root region of a circumferential welded joint of section of steam pipeline by FEM simulation of the stress-strain state of repaired section of a circumferential weld in the zone of lack of root penetration on a thin-wall shell of 89 mm diameter and 6 mm wall thickness from steel 20. The result of solving the problem is total distribution of stresses and residual plastic deformations in the repaired zone.

Keywords

steel; weld; stress; steam pipeline; static strength of welds

Hrčak ID:

100811

URI

https://hrcak.srce.hr/100811

Publication date:

1.10.2013.

Visits: 1.176 *