In the present there is presented a method to manufacture multimaterial rolls, comprising method to produce base material containing part of the roll, joining of special material containing part for that, hot working at least part of the length of the roll ingot containing base material and special material, —so that at least requested roll ingot length and diameter are achieved as well as final treatment of the roll ingot—to manufacture finished roll. This method enables manufacture of large rolls, for example having length more than 3 meters as one integrated component without welding or mechanical joint—so, that in the working surfaces of the rolls is used steel with high amount of alloying elements and carbide forming alloying elements.

A method and device for laser cladding by independently heating the cladding material and the surface of the workpiece consist in formation of the series of parallel annular laser beams, possibly different wavelengths, with an adjustable distribution of laser radiation power across the annular beams. The annular beams are transformed into a series of conical beams which are separately focused along a single optical axis, along which the cladding material is fed. The device can be supplemented with a cylindrical mirror for the multipass laser radiation through the stream of cladding material with the possibility of the laser radiation return to the laser resonator.

A method and device for laser cladding by independently heating the cladding material and the surface of the workpiece consist in formation of the series of parallel annular laser beams, possibly different wavelengths, with an adjustable distribution of laser radiation power across the annular beams. The annular beams are transformed into a series of conical beams which are separately focused along a single optical axis, along which the cladding material is fed. The device can be supplemented with a cylindrical mirror for the multipass laser radiation through the stream of cladding material with the possibility of the laser radiation return to the laser resonator.

Systems and methods directed fabrication using multi-material and precision alloy droplet jetting.

Systems and methods directed fabrication using multi-material and precision alloy droplet jetting.

Systems and methods directed fabrication using multi-material and precision alloy droplet jetting.

An electric melting method for forming a cylinder of a pressure vessel of nuclear power station, in which an electric melting head and a base material are connected to the anode and cathode of a power supply respectively. During the forming of a metal component, the raw metal wire is sent to a surface of the base material by a feeder and the electric melting head to create the electric arc between the raw wire and the base material, wherein the electric arc melts certain of deposited auxiliary material and crates a molten slag pool; a current creates the resistance heat and the electroslag heat; the raw wire is molten under the high-energy heat resource composed of the electric arc heat, the resistance heat and the electroslag heat, and creates a molten pool on partial surface of the base material.

An electric melting method for forming a cylinder of a pressure vessel of nuclear power station, in which an electric melting head and a base material are connected to the anode and cathode of a power supply respectively. During the forming of a metal component, the raw metal wire is sent to a surface of the base material by a feeder and the electric melting head to create the electric arc between the raw wire and the base material, wherein the electric arc melts certain of deposited auxiliary material and crates a molten slag pool; a current creates the resistance heat and the electroslag heat; the raw wire is molten under the high-energy heat resource composed of the electric arc heat, the resistance heat and the electroslag heat, and creates a molten pool on partial surface of the base material.

Apparatus and methods are described for performing additive manufacturing. The apparatus includes a vacuum chamber for fabricating a workpiece composed of deposited metal, a table positioned within the vacuum chamber, and configured to support fabrication of the workpiece on a substrate, and one or more multiple droplet emitters coupled to the vacuum chamber, and arranged to irradiate the workpiece with a stream of molten metal droplets during fabrication.

Apparatus and methods are described for performing additive manufacturing. The apparatus includes a vacuum chamber for fabricating a workpiece composed of deposited metal, a table positioned within the vacuum chamber, and configured to support fabrication of the workpiece on a substrate, and one or more multiple droplet emitters coupled to the vacuum chamber, and arranged to irradiate the workpiece with a stream of molten metal droplets during fabrication.