Abstract
The article proposes the use of the metal magnetic memory method for the purpose of detecting and measuring residual stresses in welded seams and heat-affected zones of longitudinal welded pipes. The experimental study was divided into the following stage
Highlights
Increasing the competitiveness of products is directly related to the introduction of progressive methods for obtaining new grades of pipe steels and technologies for their production, improving the internal structure of the metal as a result of removing internal stresses, as well as improving the properties of products obtained by welding
It should be borne in mind that after removing the load, residual stresses are formed in the sheet blank, causing the sheet formed for welding to spring
Residual stresses are associated with changes in the volume of the metal and structural transformations that occur in the atomic lattice, and persist over time in the absence of external forces
Summary
Increasing the competitiveness of products is directly related to the introduction of progressive methods for obtaining new grades of pipe steels and technologies for their production, improving the internal structure of the metal as a result of removing internal stresses, as well as improving the properties of products obtained by welding. The purpose of this study is to study the possibility of using the metal magnetic memory method to measure internal stresses in the weld section and the heat-affected zone of longitudinal welded pipes.
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