The properties of composite black holes in the background of electric or magnetic flux tubes are analyzed, both when the black holes remain in static equilibrium and when they accelerate under a net external force. To this effect, we present a number of exact solutions (generalizing the Melvin, C and Ernst solutions) describing these configurations in a theory that admits composite black holes ...

The research carried out by the authors of this paper is focused on technological process Inconel 625 welding with MAG–CMT (Metal Active Gas-Cold Metal Transfer) method. was welded to substrate material, which 16Mo3 steel. Both materials are used produce so-called bimetallic tubes, in practice serve as a part equipment intended for waste incineration. For reason, tubes must withstand extreme co...