[Kovove materialy - Metallic materials]
    Sat - September 19, 2020 - 05:58 No. of hits : 1175097 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 35 (1997), Issue 5

Mechanical and metallurgical characteristics of stress-test of pipeline welded of thermomechanically treated steel (in Czech)
PILOUS, V., SEJPKA, L., MAZANEC, K., STRANSKY, K., WINKLER, Z.
vol. 35 (1997), no. 5, pp. 313 - 321

Abstract
The paper is devoted to an analysis of mechanical and metallurgical consequences of a stress-test applied to a welded joint of a pipeline manufactured from spirally welded pipes of thermomechanically rolled steel grade StE 480.7 TM. The pipeline was welded as a whole using basic vertical down electrodes without application of preheating and additional heat treatment. During the stress-testing, an irreversible integral deformation of 1 promile was attained on the circumference of the pipes. The result of the testing was a change in distribution of the localized internal stresses and an increase of working safety and reliability of the pipeline system. After making this test, neither microcracks nor other types of defects were detected in welded joints of the StE 480.7 TM steel grade.

Key words
mechanical characteristics, stress-test, steels

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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