Abstract: A machine for the flash butt welding of rails is provided. The machine comprises electric contacts yokes having controlled drives and further comprise holes through which guide pins are passed.

Abstract: Method and equipment to produce nanopowders of materials based on pure metals, their alloys and chemical compounds of these metals with elements taken from the row of B, C, O and Si, encapsulated into a salt shell selected from the group of NaCl, NaF, LiCl, and LiF or their mixtures, includes independent evaporation by means of electron beam and/or laser radiation sources of the material and alkali metal(s) halogenide and simultaneous deposition of a mixture of their vapor phases on a substrate in a closed pumped-down volume. To achieve the required ratio of vapor flows, a screen with variable cross-section diaphragms is placed between the substrate movable in parallel to the evaporators, and the evaporators, thus allowing an independent regulation of the intensity of the vapor flow coming to the substrate from each of the evaporators.

Abstract: A method of resistance butt welding in which a current-conducting insert is placed into a gap between the parts being welded, axial pressure force is applied and electrical current is passed. The current-conducting insert is a shaped metal insert having cavities filled with a welding flux and is placed in the gap between the parts being welded.

Abstract: A machine for butt welding of pipes can be used in different branches of industry and construction when welding of tubular parts having different configurations and purposes. The machine increases the accuracy of pipe alignment during clamping and reduces frictional losses by using a special mechanism for aligning and clamping the pipes being welded. The improvement makes it possible to improve the quality of welded joints, labor productivity and reliability of machine operation.

Abstract: A method and installation for making nanopowders of materials on the base of pure metals of Be, Mg, Al, Ca, Sc, V, Cr, Zn, Fe, Ni, Cu, Ti, Si, Co, Pt, Au, Zr, Mn, Sr, Y, Nb, Mo, Ag, Ba, La, Hf, Ta, W, Pt, Au, Bi, Ce, Sm or Dy, their alloys and chemical compounds of the metals with elements selected from the group consisting of B, C, O and Si, encapsulated into a sheath of salt selected from the group consisting of NaCl, NaF, LiCl and LiF or their mixture, comprises the evaporation of material and a halogenide of alkali metal and condensation of a mixture of their vapor phases on the substrate surface performed simultaneously in a closed evacuated volume.

Abstract: A press welding process which can be used in such industries as car-making, production of hot-water boilers, industrial and civil construction, in construction of pipelines using small and medium diameter pipes, for welding parts with a solid and developed cross-section, as well as for joining parts to form a T-joint. A magnetically impelled arc butt welding is achieved, that, during heating, the controlled continuous displacement of the parts being welded is performed where the gap between the parts edges is kept constant. The value of the welding arc voltage is used as the parameter for the gap size adjustment, and the moment of achievement of the required temperature on the edges of parts being welded, is determined by the length of the relative displacement of the parts, and when the assigned values of displacement have been reached, the speed of the arc movement along the edges of the parts being welded, is programmed.

Abstract: A device for electron beam processing of materials in space designed for the performance of the technical operations of welding, cutting, heating, filler welding, tube welding, brazing, coating deposition by the method of thermal evaporation of materials under vacuum by an operator in a spacesuit during EVA. The device includes a range of replaceable electron beam handtools, control and power supply modules, connection cables and a module for monitoring the condition of the device which is placed inside the space vehicle.

Abstract: An astronaut's work station for performing experiments or other work in space is designed for use under the conditions of open space on board space vehicles by an astronaut in a spacesuit, using a system of hardware, for instance electron beam, which it accommodates, as well as samples of materials to be worked on, located in a replaceable samples module. The work station is fastened on the outer surface of a long-term orbital space station of the MIR type, or in the cargo bay of a cargo reusable space vehicle of the Shuttle type. The work station comprises a frame containing a base with a foot rail, a hand rail with a holder, a seat with latches for locking-in the replaceable samples module, and an astronaut's sliding foot restraint which moves over the foot rail.