Calculation of the transverse magnetic field parameters, allows the mixing of the melt in the bath during electric arc deposition and welding

It is shown that the use of a control transverse magnetic field (TMF) at electric arc deposition and submerged arc welding with flux-cored electrode allows increasing the flux-cored electrode melting rate, controlling the geometric dimensions of the fusion penetration zone, and grinding the structural components of the deposited metal or seam. The known literature data on the flow speed obtained by physical modelling refer to the effect of a constant transverse magnetic field. In practice, it is advisable to use alternating TMF in order to ensure good formation of beads (seams) during arc deposition (welding). The flow speed in the bath during arc deposition with the action of an alternating TMF is determined by calculation using the Euler equations of motion for a laminar flow. The calculations took into account the electromagnetic force as the product of the vertical component of the current density in the liquid metal of the bath under the electrode with the transverse component of the TMF induction. The geometric dimensions of the bath are obtained by calculation. The TMF frequency values at a given level of TMF induction, which ensure mixing of the melt in the bath during electric arc deposition and welding, are determined. © 2021 Informa UK Limited, trading as Taylor & Francis Group.