Deviations from Parameters of Thermal Cycle of Electric-Arc Welding of 12Kh1MF Heat-Resistant Steel Detected in Magnetic Characteristics of the Affected Zone
Source abstract
Abstract
On the base of investigations of magnetic characteristics of the 12Kh1MF heat-resistant steel in the zones of melting and thermal transformations in various regimes of electric-arc welding, a new approach to estimating the quality and service lives of welded joints in steam pipelines has been developed on the basis of magnetic structural analysis. Fields due to residual magnetization in the affected zone are measured locally along the direction towards the unaffected metal with a step width of 1–2 mm by the MS-1 magnetic sorter after removing the bead. Deviations from the prescribed regime of welding are detected and the service life of the joint is predicted using the maximal and minimal measurements or magnetic parameters along the line of measurements.
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Research context
OpenAlex topics: Welding Techniques and Residual Stresses · Non-Destructive Testing Techniques · Microstructure and Mechanical Properties of Steels
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References (18)
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