Open AccessInvestigation of thermal and deformation processes in the welding of shell structures made of carbon and high-alloy structural steels
Author(s) -
Rodion Nigay,
E Nigay,
Lubov Mironova
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1431/1/012039
Subject(s) - welding , materials science , residual stress , alloy , shell (structure) , deformation (meteorology) , joint (building) , thermal , metallurgy , composite material , structural engineering , engineering , thermodynamics , physics
An experimental study of thermal processes in the welding of two intersecting shells of low-alloy structural steels of increased strength was carried out. As a prototype, a welded structure consisting of shell elements with different wall thicknesses was chosen. The features of the welding process are identified, which include: multi-pass manual welding with a breakdown of the joint contour into several sections. The results of studies of thermal and deformation processes are given taking into account the features of the welding conditions and the formation of the weld. Qualitative and quantitative estimates showed that minimizing the residual stress state of the welded structure can be achieved by the optimal choice of welding conditions.