Electron beam welding of dissimilar alloys under conditions of the generation of thermoelectric current

Investigation of Magnetic Properties of Various Structural Classes Steels in Weak Magnetic Fields Characteristic for Generation of Thermoelectric Currents in Electron Beam Welding

“…which leads to a change in the trajectory of beam electrons along the thickness of the joint and, as a consequence, to the formation of incomplete penetration in welded joint. The magnitude of beam's deviation directly depends on thermoelectric power, magnetic permeability and electrical resistance of welded materials [1]. That is why it is necessary to use various technological methods to compensate for the resulting thermoelectric currents and magnetic field generated by them in order to eliminate the deviation of electron beam through the thickness of the joint during the process of welding.…”

“…Currently, there are a number of numerical and analytical models [1,3] for estimating the value of electron beam deviation under the action of thermoelectric fields. Using them we can estimate the nature of penetration form and correct the parameters of actual welding process.…”

Modelling of magnetic fields of thermoelectric current in the penetration channel in electron beam welding of ferro- and paramagnetic steels

“…6 The process was simulated on paramagnetic welded sheets with the size of 120 × 60 × 30 mm made of 12Cr18Ni10Ti steel, ferromagnetic sheets made of steel 10 and dissimilar sheets made of steels 10 and 12Cr18Ni10Ti. 6 The process was simulated on paramagnetic welded sheets with the size of 120 × 60 × 30 mm made of 12Cr18Ni10Ti steel, ferromagnetic sheets made of steel 10 and dissimilar sheets made of steels 10 and 12Cr18Ni10Ti.…”