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Nemova T.N.,Tomsk State University of Architecture and Building | Stepanov A.P.,Branch of the Tomsk Polytechnical University
Welding International | Year: 2014

The main relationships governing the movement of the cathode (anode) spot of an electric arc, in particular, the effect of rotation of the arc spots, which can be visually investigated at low arc currents, are investigated. The reasons for this phenomenon are explained on the basis of the vortex electrodynamic model of the electric arc in which the current-conducting channel in the plasma arc column has the structure of the dynamic cylindrical coaxial condenser. This phenomenon must be taken in the analysis of the processes taking place in the weld pool because the rotation of the channel of the plasma arc column is the reason for the effective rotational displacement of the material of the weld pool. © 2013 Taylor & Francis. Source


Krampit N.Y.,Branch of the Tomsk Polytechnical University
Welding International | Year: 2011

A CO2-shielded long arc welding stability increase technique is suggested, which is attainable by pulsed arc welding application. At pulse pile-up, power dispensing is carried out on the droplets melting, starting from the moment of droplet detachment, which is registered by the voltage spike at the arc space. This allows for keeping up equal sizes of the droplets, favours higher process stability and weld upgrading. © 2011 Taylor & Francis. Source


Krampit A.G.,Branch of the Tomsk Polytechnical University
Welding International | Year: 2014

Parameters of the process of pulsed arc welding resulting in the fusion of the bead in the angles of preparation of the edges of the root layer in the narrow gap are determined. © 2013 © 2013 Taylor & Francis. Source


Krampit A.G.,Branch of the Tomsk Polytechnical University | Krampit N.Y.,Branch of the Tomsk Polytechnical University
Welding International | Year: 2013

The method for the determination of the geometrical dimensions and area of the welded joint using a computer program to increase the quality and productivity of the process is described. © 2013 Copyright Taylor and Francis Group, LLC. Source


Kuznetsov M.A.,Branch of the Tomsk Polytechnical University | Zernin E.A.,Branch of the Tomsk Polytechnical University
Welding International | Year: 2012

The application of nanotechnologies and nanomaterials in welding production is reviewed. The methods of joining the materials with special properties are investigated; the application of nanopowders in fusion welding and surfacing is discussed. The aim of this procedure is to reduce the effect of stress concentrators (defects) and also of nanolayer films and foils in pressure welding. © 2012 Taylor and Francis Group, LLC. Source

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