Increasing the strength of welded thin-walled axisymmetric vessels made of corrosion-resistant steel

Structural elements of thin-walled vessels operating under internal pressure are mainly made from sheet blanks using welding operations. To reduce the negative impact of welds in the manufacture of thin-walled vessels, it is proposed to use separate calibration processes by compressing vessel parts...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1515; no. 3; pp. 32033 - 32038
Main Authors Vasechkin, M A, Yu Davydov, O, Egorov, V G, Egorov, S V, Matveeva, E V
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2020
Subjects
Calibration
Corrosion resistance
Corrosion resistant steels
Internal pressure
Physics
Structural members
Vessels
Welded joints
Welding
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Summary:Structural elements of thin-walled vessels operating under internal pressure are mainly made from sheet blanks using welding operations. To reduce the negative impact of welds in the manufacture of thin-walled vessels, it is proposed to use separate calibration processes by compressing vessel parts with subsequent welding and their joint calibration by distribution and rotary rolling. Compression calibration ensures the accuracy of matching of the abutting annular edges of the vessel parts. During rotary rolling, the welds are simultaneously smoothed and the strength characteristics are improved due to plastic hardening caused by thinning and leveling the wall thickness of the vessel body. Based on the conducted research, technological recommendations have been developed for the manufacture of thin-walled vessels of increased strength from corrosion-resistant steels.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1515/3/032033