Working by laser beam, e.g. welding, cutting, boring (B23K26)

B23K26/03 - Observing the workpiece(9)
B23K26/067 - (15)
B23K26/073 - (9)
B23K26/10 - Using a fixed support(1)
B23K26/22 - Spot welding(2)
B23K26/24 - Seam welding(4)
B23K26/26 - Of rectilinear seams(8)
B23K26/28 - Of curved planar seams(6)
B23K26/36 - Removing material(25)
B23K26/38 - By boring or cutting(63)

achine for laser-arc welding of parts // 2615428
FIELD: metallurgy.SUBSTANCE: machine for laser-arc welding of parts contains a base with a kinematic system of the welding unit movement with an optical laser head and torch installed on the base, as well as the equipment for installing and driving the welded parts. The welding unit is equipped with a device for edge cleaning before welding. The device for cleaning the edges and the torch are mounted to ensure movement and fixation in the predetermined position on the upper and lower half-rings respectively attached to the welding unit. The equipment for installing and driving the welded parts is designed as spindle heads, on the spindles of which part adjusting and fastening devices are mounted.EFFECT: improved quality of welded joints and expanded device functional capabilities.5 dwg
ethod for laser marking of product surface of aluminium or its alloy with oxide outer layer // 2615381
FIELD: physics.SUBSTANCE: formation of the marking visually observed by the human vision is carried out, different from the product surface areas adjacent to the marking, due to changes in the structure compared with the material in the areas adjacent to the marking by the action of laser radiation and subsequent cooling. It is effected by the laser radiation having a wavelength selected from the condition of the radiation absorption by the aluminium oxide without damaging the surface of aluminium or its alloy. Hardening the oxide outer layer is performed by providing the pore closure in the modified and unmodified areas of the oxide outer layer. The oxide layer structure is formed, different from the material in the areas adjacent to the marking in the process of cooling the melt and condensing the evaporated material of the oxide outer layer.EFFECT: hardening the oxide coating of products of aluminium or its alloy, while maintaining the initial surface shape of aluminium or its alloy.11 cl, 2 dwg, 2 ex, 1 tbl

ethod and device for contoured surface formation on steel embossing shaft // 2614502
FIELD: technological processes.SUBSTANCE: invention relates to field of laser processing and can be used for contoured surface formation on steel embossing shaft. Contoured surface formation represents making of macrorelief with elements dimensions of more than 20 mcm and depths of up to 150 mcm inclusively, by laser exposure with following parameters: energy density in single pulses generation mode is equal to 0.5–3.5 J/cm2, average density of energy in pulses packs generation mode is equal to 0.5–70 J/cm2 per pulse, wave length is 532–1,064 nm, pulse repetition frequency is from 1 kHz to 10 MHz, distance between pulses on part is 10–50 % of beam diameter for femtosecond laser and 10–25 % or 40–50 % of beam diameter for picosecond laser, laser beam focal plane is located on part surface, and beam travel speed is equal to or more than 100 m/s.EFFECT: use of invention enables to increase preset relief on embossing shaft production precision.9 cl, 3 dwg

Stringer connecting method with covering by beam welding at stringer panels manufacture // 2614358
FIELD: metallurgy.SUBSTANCE: method includes stringer installing on the collar, performed on the covering at the place of the stringer location, and its weld tack, positioning and clamping of the stringer in the welding area by means of the head with the guide rollers, stringer welding with covering collar simultaneously by two beams, directed from two opposite sides of the stringer and moving along the weld joint of the stringer. Thus the stringer welding from one side is performed by the first beam, providing weld penetration to the depth equal to 0.8-0.9 of the stringer thickness, and from the other striger side the welding by the second beam is performed, providing weld penetration to the depth equal to 0.2-0.3 of the stringer thickness. The first beam is moved in front of the second beam at the distance greater than the length of the welding bath of the first beam.EFFECT: invention improves the quality of stringers welded joints with the increased thickness and stiffness.7 dwg

ethod of metal parts surfacing for aircraft jet turbine engines and local protection tooling for said method implementation // 2612471
FIELD: metallurgy.SUBSTANCE: invention relates to metal parts (301) surfacing method for aircraft turbojet engine and tooling for its implementation. Metal part is set into surfacing (301) position in chamber (201), having upper part (202) with hole (208). Movable cover (221) with hole (222) is installed on hole (208) in chamber upper part (202). Performing nozzle (103) positioning on movable cover (221) hole (222) level. Introducing inert gas into chamber (201). Performing metal powder application on metal part (301), laser beam or electrons beam emission for metal part (301) surfacing, applied powder warming up by said beam with provision of metal part (301) surfacing. During surfacing process performing nozzle (103) movement relative to chamber (201) in accordance with metal part (301) surfacing path, wherein by nozzle (103) displacement performing movable cover (201) movement on chamber (201) upper part (202).EFFECT: result is provision of considerable rectilinear nozzle movement, which enables to cover entire surfacing area, as well as insulation, which prevents fast gas flow from chamber, accordingly preventing part oxidation during surfacing.14 cl, 5 dwg
ethod for application and laser treatment of thermal-protective coating (versions) // 2611738
FIELD: technological processes.SUBSTANCE: invention relates to gas thermal spraying coating, in particular, to methods of sputtering of heat-resistant and heat-protective coatings. Main metal thermal resistant underlayer is applied. Upper ceramic heat-shielding layer is applied, followed by laser treatment. Laser treatment is performed using a laser beam with U-like energy distribution across cross-section. Output power value and speed of scanning of laser beam is set in range of 100–6,000 W and 0.01–1 m/s. In another version, main metal thermal resistant underlayer is applied. Upper ceramic heat-shielding layer is applied, followed by laser treatment. Laser treatment is performed using a laser beam with U-like energy distribution across cross-section. Output power values and laser beam scanning rate are set in range of 100–6,000 W and 0.01–1 m/s. Laser treatment is then carried out with parameters of laser beam, corresponding to previous laser treatment to obtain a coating with given properties.EFFECT: high resistance of heat shielding coating to high temperature effects (thermal resistance and heat resistance), erosion and corrosion by fusion of upper ceramic layer.10 cl, 1 tbl, 1 ex

Laser perforating machine // 2611619
FIELD: optical system; manufacturing technology.SUBSTANCE: invention relates to laser machines for creation of perforations in filters of combined cigarettes formed of two cigarettes with double filter between them. Machine (10) comprises left-side laser beam radiating unit (28), which brings in one point laser beam (BL) supplied to right part (16R) of double filter (16) with formation of perforations (H), inclined to axis of cigarettes (12) with double filter and right-side laser beam radiating unit (30), which brings in one point laser beam (BR), incoming to left part (16L) of double filter (16) with formation of perforations (H), inclined to axis of cigarette (12), when it is located in position of perforation (PP) located on track for transportation.EFFECT: invention provides simplified design of laser perforating machine.8 cl, 12 dwg

ethod of optical processing device unused optical radiation energy recovery, recovery device and optical processing device // 2611608
FIELD: lighting.SUBSTANCE: invention relates to optical processing device (1) unused optical radiation energy recovery method, containing, at least, one light source, in particular, laser radiation source (2) or light source with plurality of light-emitting diodes, optical processing unit (1) for workpiece processing (5) (versions) and recovery device. Method includes stages of: light source actuation, exposure of, at least, one workpiece (5) to electromagnetic radiation (4) for its processing, trapping by recovery device (6, 6a, 6b) radiation trap (7) of, at least, part of electromagnetic radiation (4') not used in workpiece (5) processing, conversion of, at least, part of electromagnetic radiation (4') energy, captured by trap (7), into electric energy (14). Recovery device (6, 6a, 6b) contains radiation trap (7) with cavity (70) and, at least, with one light input opening (71) for electromagnetic radiation (4') input into cavity (70). Recovery device (6, 6a, 6b) absorbents (9) are located inside radiation trap (7) cavity (70) and made with possibility to absorb, at least, part of electromagnetic radiation (4') entering into cavity (70), convert it into thermal energy and heat fluid coolant (12). Thermal engine (10), in particular, steam turbine or Stirling engine, in to which fluid coolant (12) is supplied, is made with possibility of conversion of, at least, part of fluid heat carrier (12) heat energy into mechanical energy (13). Generator (11) is connected with heat engine (10) and made with possibility of conversion of, at least, part of mechanical energy (13) into electric energy (14).EFFECT: recovery of optical processing device unused optical radiation energy.26 cl, 5 dwg

ethod for applying mark onto surface of diamond or cut diamond to determine its authenticity // 2611232
FIELD: security.SUBSTANCE: invention relates to a method of authenticating an article in the form of a diamond or a cut diamond. Identification mark invisible with the naked eye is applied onto a diamond or a cut diamond by exposure to a laser radiation with a wavelength exceeding 500 nm with simultaneous affecting by ultrasound using a tool located on the section surface. After that saved are at least two interference images of the article identification mark by means of a probing radiation with waves of different lengths together with data on location of a certain section of the article and an angle of incidence of the probing radiation. Determination of authenticity and correspondence to the saved values is carried out by directing the probing radiation onto the said section to create at least two interference images of the identification mark, which then are compared with the saved interference images, matching of which denotes the mark authenticity.EFFECT: technical result is ensuring uniqueness of the mark, protection from counterfeiting and reliable identification during authentication.4 cl, 2 dwg, 2 ex

Device and method of cutting by measuring decorative tape paper and use of device for cutting device // 2610498
FIELD: printing.SUBSTANCE: invention reffers to printing and relates to the device and method of cutting to a size of decorative paper tape, and application the device for cutting the tape. The device for cutting the segments of decorative paper tape, that have the coating, includes a flow line with means for decorating and impregnating endless belt paper for converting a ribbon of decorative paper and at least one device for lateral dissolution separating belt lengths decorative paper of a certain length of tape decorative paper . In the feeding direction, before at least one device for transverse dissolution there is at least one device for slitting to separate the decorative paper tape, at least two endless longitudinal tape decorative paper, and at least one deflecting device, which separates the two longitudinal tape relative to one another and leads, respectively, to a separate device for the cross dissolve.EFFECT: invention provides a process of optimization of cutting pieces of decorative paper tape.15 cl, 5 dwg
ethod of cladding and fusion welding of superalloys // 2610198
FIELD: metallurgy.SUBSTANCE: invention relates to welding by fusion of superalloys and can be used for manufacturing and repairing gas turbine engine elements. Base material made of superalloy is coated with a composite filler powder, containing 5–50 wt% brazing powder, which includes melting point depressants, and 50–95 wt% high temperature welding powder. Method includes simultaneous heating base material and composite filler powder to a temperature that will fully melt brazing powder and and at least partially melt high temperature welding powder, and also melt a surface layer to form a weld pool. Weld pool is cooled at rate providing, during crystallisation and cooling, formation of a composite structure, comprising interconnected grid of dendrites with high melting point, obtained from high-temperature welding powder, and formation from high-melting point solder powder, high-temperature welding powder and base material in weld bead of dendritic eutectic matrix. Splicing of weld bead and base material is obtained. Method includes performing post-welding thermal treatment at temperature above temperature of solidus of brazing powder and below temperature of solidus of high-temperature welding powder.EFFECT: technical result is enabling self-healing of cracks during welding and post-welding heat treatment.10 cl, 8 dwg, 3 tbl, 9 ex

ethod of large-diameter pipes welding by laser and hybrid laser-arc welding // 2609609
FIELD: technological processes.SUBSTANCE: invention relates to large-diameter pipes welding method. Performing tack weld with welding torch with simultaneous monitoring over edges joint using scanning sensor located before welding torch. Immediately after tack weld welding performing application of notch onto it by laser beam or mechanical tool, which position is adjusted by means of said sensor. Performing root weld hybrid laser-arc welding by welding head, which position is adjusted relative to joint by said sensor guidance onto produced notch.EFFECT: invention enables to avoid occurrence of inadmissible defects in form of penetrations and edges incomplete fusion in hybrid laser-arc welding welds, which can occur at laser beam deviation from welded joint.1 cl, 1 dwg
ethod of car seat upper skid and slides fastening bracket welding // 2609596
FIELD: machine building.SUBSTANCE: invention relates to method of car seat slides upper skid connection with car seat frame clamping bracket. Method involves longitudinal mounting platform of specified length in fastening bracket base lower surface application on upper flat horizontal surface in upper skid top; application of additional surface mounted plate on horizontal plane lower surface at section, corresponding to mounting platform location; and mounted plate connection, mounting pad and horizontal plane by welding on mounted plate lower surface side.EFFECT: result is enabling high strength of weld joint between car seat upper slides skid and frame clamping bracket at considerable reduction of labor costs for performance of welding works as compared to making weld along mounting pad perimeter.3 cl, 6 dwg

ethod for multilayer deposit welding of monocoque // 2609571
FIELD: physics.SUBSTANCE: invention relates to a method of producing multilayer monocoque and can be used in transportation and aircraft engineering. The layer-by-layer electronic drawing of the monocoque is made. The monocoque is deposit-welded by a laser beam on a substrate, perpendicular to the longitudinal axis of the monocoque, successively layer by layer according to the electronic drawing. Deposit welding using a laser beam is performed using a wire having a square cross-section, a given composition and cross dimension. Deposit welding of the next layer includes partial fusion of interfaced surfaces in the area of the next contact of automatically fed wire and substrate or previously deposit-welded layer so as to enable metallurgical bonding thereof. The laser beam can be continuous or pulsed.EFFECT: invention provides accuracy of laser deposit welding of monocoque due to partial fusion of the deposit-welded sire on the interfaced surface and reduces work on further finishing processing of the monocoque surfaces.2 dwg, 1 ex

ethod for hybrid laser/arc welding and using it method of making welded article // 2608937
FIELD: metal processing.SUBSTANCE: invention relates to a method of hybrid laser/arc welding for butt welding of an article made from stainless steel. In the joint part welding is performed by directing laser radiation and an arc discharge along the same welding line so that the laser welding is followed by TIG arc welding. Focus point of the laser beam for laser welding takes a position above the article to be welded. Laser beam is defocused to the diameter of the laser beam directed at the article to be welded, not less than 1mm. Interval between the laser radiation position at laser welding and the arc discharge position at TIG arc welding ranges from 3 to 7 mm.EFFECT: method of welding increases the speed of welding up to approximately 20 m/min with obtaining a suture with good configurations and without welding defects, such as gas blowholes.8 cl, 5 dwg, 3 tbl, 3 ex

Device for absorption of radiation of optical wavelength range // 2608933
FIELD: physics.SUBSTANCE: invention relates to a device for absorbing radiation in optical wavelength range. Cylindrical housing is open on one side of inner cavity, in which there is a conical element facing by its tip towards input radiation. Housing and conical element are coaxial bodies of revolution. Inner space of housing is a conical cavity which narrows inside housing. Surface of conical cavity and surface of conical element have regular recesses, forming a continuous corrugation of said surfaces. Profile of recesses has a configuration which provides multiple reflection of input radiation at angles deliberately excluding spurious radiation output from device. Housing is made from material with high heat conductivity, and conical element is made of material with low coefficient of linear expansion. Surface of conical cavity of housing and surface of conical element are coated with ammonium molybdate. On external surface of housing there are circular bores for air cooling.EFFECT: higher absorption capacity of device and broader capabilities of its application, including for absorption of radiation of various wavelengths of optical range.3 cl, 3 dwg

ethod of pipe scanning intended for processing at laser cutting machine, using sensor for measuring radiation reflected or emitted by pipe // 2608868
FIELD: pipes.SUBSTANCE: invention relates to pipe scanning method, intended for processing at laser cutting machine. Method includes stages, at which: a) emitting focused laser beam by cutting head (50) of laser cutting machine so, that to prevent pipe material (T) cutting or etching; b) moving cutting head (50) along scanning specified direction (x); and c) during cutting head (50) movement along scanning direction (x) detecting by means of corresponding radiation sensors (56), reflected or irradiated by pipe (T), and install successively point by point, based on signal provided by sensors (56), presence or absence of pipe material (T).EFFECT: invention enables to measure cutting point position on pipe surface regardless of pipe position on laser cutting machine and from pipe shape.6 cl, 8 dwg

Laser nozzle having moving element // 2607889
FIELD: laser engineering.SUBSTANCE: invention can be used in laser cutting, in particular, using a fibre or disc laser. Nozzle (1) housing is made with axial cavity (5), having first outlet hole (11) on front side (1a). Movable element (2) is configured for translational movement in axial cavity (5) in direction of first outlet hole (11) under pressure of gas until front part (2a), forming inner cylindrical wall of movable element (2), does not protrude from axial cavity (5) through first outlet hole (11). Elastic element (8) is located in axial cavity (5) between nozzle housing (1) and movable element (2).EFFECT: elastic element (8) generates elastic return force to movable element (2) and tends to counteract translational movement in axial cavity (5) in direction of first outlet hole (11).11 cl, 4 dwg

ethod of creating structure of article and article produced using said method // 2607750
FIELD: laser engineering.SUBSTANCE: group of inventions relates to a method of creating at least one structure (13, 15) by means of a laser exposure, at least, at one part (11) of a container wall of a plastic article in the form of a container and an article made as described above. Preferably, the article is made by the process of blow molding, filling and closing the container. Corresponding structure (13, 15) of the container is created by the laser exposure. Laser exposure is determined at least considering the laser power, duration of the laser exposure, type of a plastic material and type of the desired structure in the form of linear depression (17) in part (11) of the article wall. Linear depression (17) at its edge and its travel is limited by projection (27), which is created under the effect of inherent stress of the plastic material.EFFECT: technical result achieved when using the group of inventions is reliable implementation of the method and creation of distinctly recognizable structures.10 cl, 9 dwg
ethod for laser separation of rubber and polymer coatings // 2607736
FIELD: technological processes.SUBSTANCE: invention relates to removal of rubber and polymer coatings, glued to surface of various structures. Described method is based on local infrared laser thermal action directly on zone of adhesive layer. Laser beam at rate providing required heating is used to scan adhesive layer in zone of contact of coating and surface of structure. When temperature values reach 60÷150 °C strength of adhesive layer falls by almost an order, that makes it possible to remove a coating layer from surface of structure using an applied tension force.EFFECT: reduced labor input, power consumption, high efficiency of removal of rubber coatings, providing a method which is safe for personnel by avoiding burning of rubber coating.3 cl, 1 dwg

ethod for controlling a laser cutting process and laser cutting system implementing the same // 2607502
FIELD: laser engineering.SUBSTANCE: group of inventions relates to method and a laser cutting system. According to the invention, a laser cutting process is controlled, using as reference signal one or more emission lines, which are characteristic of the radiation, emitted by a assisting gas or a contaminant gas, present in the material volume, irradiated by the laser beam, focussed by laser head (12), based on the detected signal, at least one of the following process control parameters: power of the laser, frequency and the duty cycle of the laser pulse, pressure of an assisting gas, emitted by nozzle (16) forming part of laser head (12), relative speed of laser head (12) with respect to workpiece (P), distance between laser head (12) and surface (S) of workpiece (P), and the distance between focal point (F) of the laser beam and surface (S) of workpiece (P) are being adjusted.EFFECT: technical result is improved quality of laser cutting.12 cl, 12 dwg

Device for laser processing and method for laser processing, containing singlet lens for focusing // 2607500
FIELD: technological processes.SUBSTANCE: invention relates to laser processing method and devices and can be used for material melting, evaporation or cutting under action of laser radiation. In device unfocused light (A) from light output point (B) is emitted on singlet lens (8). Lens (8) focuses laser light (A) and directs it to part (7) processing point. Distance (ma, mb) between lens (8) and light output point (B) and distance (la, lb) between lens (8) and part (7) processing point and distance between light output point (B) and said processing point may vary.EFFECT: wherein, achieved are expanded operating performances of device and method, consisting in processing of parts with various thickness, and higher accuracy of laser processing.40 cl, 6 dwg

Laser radiation retention plant in safe closed space // 2607295
FIELD: machine building.SUBSTANCE: plant includes at least two openings (O1, O2) arranged oppositely on each side, through which at least one metal tape can be drawn, shell containing first and second devices with clamping jaws (M11, M12, M12s, M21, M22, M22s) for tape, arranged on tape drawing path between two openings, wherein said jaws are arranged transversely, at least to tape width, cutting or welding unit head (TL), emitting laser radiation beam in closed space, wherein said beam is transversally movable between pair of jaws (M11, M12) located opposite to one side of tape surface, wherein in jaws compressed position on tape jaws (M11, M12, M12s; M21, M22, M22s) connection on tape surfaces leads to formation of laser radiation physical screen (F1b), preventing radiation passing through two shell openings.EFFECT: higher safety of laser cutting.17 cl, 5 dwg

Shaped part made by laser welding // 2606682
FIELD: metallurgy.SUBSTANCE: invention relates to welding and can be used for fabrication of shaped part in form of steel plates T-connection by laser welding, containing wall and flange arranged perpendicular to each other, welded to wall by its edge part by means of melting with single pass irradiation by laser beam, guided on flange one of surfaces side. Welded area shape in lateral cross section, perpendicular to shaped part longitudinal direction, should be such, that were observed flange melted area width preset dimensions on both sides, wall melted area widths on both sides and wall penetration maximum depth. In case if wall and flange are made in form of plates with galvanic coating, then for such part other conditions for said specified sizes shall be observed.EFFECT: invention provides higher strength of T-shaped welded joint and its corrosion resistance.3 cl, 3 dwg, 12 tbl

ethod of overlapped welding section, method of making overlapped welded element, overlapped welded element and automobile part // 2606667
FIELD: manufacturing technology.SUBSTANCE: invention can be used for production of parts, in particular, automobile ones, containing multiple steel sheets jointed overlapped by point contact welding. Laser radiation is directed at the core of a point weld section obtained by contact welding to make a section crossing the core and extending beyond its limits by not less than 3 mm. In the steel sheet containing a martensite structure, provided is the depth of the section from the effect of laser radiation measured at the distance of 1 mm from borders of the core of the point weld section of at least 50 % of the said sheet thickness. When connecting the steel sheets, the outer of which is a zinc-plated steel sheet, laser radiation is directed from the side of the uncoated steel sheet to make a section crossing the said core and extending beyond its limits, without melting the section of contact with the zinc-plated sheet. In the uncoated steel sheet provided is the depth of the section from the effect of laser radiation measured at the distance of 1 mm from borders of the core of the point weld section of at least 50 % of the said sheet thickness.EFFECT: invention ensures prevention of destructions at the sections obtained by contact point welding.7 cl, 15 dwg, 4 tbl

ethod of metal surface super hydrophobic properties making // 2605401
FIELD: technological processes; metallurgy.SUBSTANCE: invention relates to method of metal surface super hydrophobic properties making. Said surface is exposed to focused beam of pulsed laser radiation with pulse duration in nanosecond range, said beam is displaced relative to said surface at predetermined law. Selected said laser radiation characteristics and said relative displacement parameters so, that to form multimodal roughness on said surface with dimensions of simultaneously in nanometer and micrometer ranges. Modifying said surface with low surface energy substance, water repellent.EFFECT: technical result consists in high efficiency of surface texturing and enabling formation of multimodal roughness super-hydrophobic state with characteristic dimensions simultaneously in nanometer (nanometers and/or tens of nanometers) and micrometer (tens and/or hundreds of micrometers) ranges.1 cl, 2 dwg, 3 ex

Ribbed panels laser welding method // 2605032
FIELD: technological processes.SUBSTANCE: invention relates to tee and angular joints laser welding and can be used for ribbed integrated structures production from aluminium alloys. Performing prepared panel web installation and securing on support surface, stringer arrangement on it and fixation using retainer. Using retainer, made in form of rigid massive longitudinal beam with lower surface, repeating inner skin contour, with side surface for contact with stringer surface and set of cramps. Performing stringer rib tack weld attached by retainer. Then welding stringer rib to skin on same side. With removed retainer performing welding on rib other side. Welding is performed by welding head with shielding gas supply tubular nozzle arranged at angle to welding beam, made covering welding zone along length, with slices at end enabling abutment to joint angular structure, and equipped with hole for filler wire and focused laser beam supply into welding zone.EFFECT: laser welding with filler wire result is production of thin-walled ribbed panels from aluminium alloys without buckling, thus excluding rib straightening operation relative to panel.1 cl, 5 dwg, 1 ex

ethod of metal powders producing // 2604743
FIELD: metallurgy.SUBSTANCE: invention relates to metal powders production. Proposed method comprises heating metal material to melting point thereof using laser radiation, formation of melt drops, cooling in free flight in neutral gas to temperature lower than melting point of metal material and collection of powder particles. Heating of metal material to melting point thereof is performed using laser radiation by cutting a specimen of metal material with displacement towards an untouched mass of material at a rate providing formation of melt in place of contact therewith. Formation of melt drops is performed in direction of plasma jet by means of its pressure and/or jet of compressed neutral gas. Powder particles are collected in volume of powder trap located on side of specimen of metal material, opposite to location of laser head for formation of laser radiation.EFFECT: higher efficiency of producing metal powder, as well as stability of shape and fractional composition of powder.3 cl, 2 dwg, 1 ex

ethod of cleaning and fining gas turbine engine blade by pulse laser // 2604406
FIELD: engines.SUBSTANCE: when cleaning a blade of a gas turbine engine having a body of a superalloy with a coating the blade coating is treated by means of a pulse laser so that the coating is removed, at least partially, and parameters of the pulse laser feed rate and the pulse laser pulse frequency are determined so that the treated surface of the blade has the roughness from 4 µm to 10 µm. Herewith the feed rate of the pulse laser ranges from 25 mm/sec to 1,000 mm/sec, and the pulse laser pulse frequency ranges from 12 kHz to 50 kHz. Pulse laser is moved along the lines of processing on the coating, herewith two successive processing lines overlap each other.EFFECT: invention simplifies the blade cleaning from the applied coating and reduces the probability of damaging the blade body.9 cl, 10 dwg

ethod of metal powders producing // 2604079
FIELD: technological processes.SUBSTANCE: invention relates to production of metal powder. Method comprises metal donor powder heating to its fusion temperature, formation of metal drops and their cooling under inert gas environment and powder collection. Powder donor metal sample surface is heated by laser radiation, which is moved within powder donor metal sample surface area at rate, sufficient for formation of melt bath on it, which volume is from 10-5 to 10 mm3. Fused metal amount from melt bath is crushed and blown by compressed inert gas stream to allow metal drops free flight until their cooling below melting temperature, wherein powder particles are collected in powder trap volume. Powder fraction size is adjusted by changing laser radiation power, and/or laser beam focusing, and/or speed of laser beam movement relative to powder donor metal sample surface, and/or duration of laser radiation action on donor metal sample, and/or by compressed inert gas stream pressure and speed.EFFECT: enabling higher efficiency of metal powder production.1 cl, 3 dwg

Installation for fabricating part by selectively melting powder // 2603737
FIELD: machine building.SUBSTANCE: invention relates to an apparatus and method of making part by selective melting of powder. Installation comprises a means producing a beam, for example a laser beam or an electron beam, and a means moving a point of impact of beam over a layer of powder. Collecting element splashes molten powder (24) formed during local melting of powder with beam (11), comprises hole (15) for passage of beam (11).EFFECT: installation incorporates means of moving said collecting element (14) together with beam (11) over layer of powder.11 cl, 6 dwg

ethod of metal powders producing // 2601983
FIELD: metallurgy.SUBSTANCE: invention relates to metal powders production. Method comprises metal donor powder heating to its fusion temperature, formation of metal drops and their cooling under inert gas environment and powder collection. Metal donor powder sample surface is heated by laser radiation, which is moved within metal donor sample surface area with speed, sufficient for formation of melt bath on it with volume from 10-5 to 10 mm3. Fused metal amount from melt bath is crushed and blown by compressed inert gas stream to allow metal drops free flight to their cooling below melting temperature. Powder particles are collected in powder trap volume.EFFECT: enabling stable shape and fractional composition of powder, possibility to adjust average particles size and making powder with diameter of less than 50 mqm.1 cl, 3 dwg

ethod of making parts made from mica by laser cutting // 2601362
FIELD: technological processes.SUBSTANCE: invention relates to production of parts of made of mica by laser cutting. Method comprises preparing and rigidly fixing a flat workpiece of mica on a fixed base, which consists of a removable gauze, resting on a rectangular ledge along perimeter of a window in base fixed on an object table, to which extends a stretching line to press said workpiece to removable gauze. Method includes supplying focused laser radiation (LI) of controlled power by means of a portal optical deflecting system to surface of flat workpiece. Spot is formed at a given point of surface of flat workpiece and cutting is performed with control of process of cutting said workpiece by supplying control signals from a personal computer to movable portal, comprising guides and a movable carriage, on which is mounted an optical laser head with provision of longitudinal-transverse displacements on corresponding coordinates of cutting line.EFFECT: invention simplifies method and provides conditions for accurate cutting without deformation of flaking workpieces.1 cl, 6 dwg, 1 ex

Laser machining head // 2600458
FIELD: laser engineering.SUBSTANCE: present invention relates to laser machining head for a laser machining unit (versions) and a laser machining unit. Laser machining head comprises a mount(2) for a sensor part (3), made from electrically conductive material, an outer insulation unit (4) made from electrical insulating material, such as plastic, for electric shielding and an inner insulation part (5) inserted into the outer insulation part (4) as radiation shield. Inner insulation part (5) is made from metal and is electrically insulated from the sensor part (3).EFFECT: longer service life of the laser machining head, since any radiation damage of the laser head due during its use is excluded.35 cl, 3 dwg

Control device for laser thermal strengthening process // 2599920
FIELD: machine building.SUBSTANCE: invention relates to a control device foe laser thermal strengthening process. Control is provided with further parameters correction of a reinforced part layer in real time to increase processing quality. Device has a double-circuit control system: temperature stabilization circuit on processing object surface and a reinforced layer parameters correction circuit. Device comprises a controller for setting parameters of the reinforced layer, a controller for forming processing parameters, forming control signals for radiation source power control and controllers of the rate of drives of beam guide movable links movement, beam guide heats the treated surface by laser beam, a temperature sensor connected to the functional converter FC1 forming correcting signals at rate controllers. Intelligent reinforced layer parameters identifier forms correcting signals for reinforced layer parameters controller by means of functional converter FC3 based on data, obtained from the controller for forming processing parameters, from the temperature sensor through a function converter FC2 and from the heating model unit.EFFECT: heating model is generated based on data received from the temperature sensor and controller for forming processing parameters.1 cl, 1 dwg

Repair of the obtained by directed crystallization alloys // 2599322
FIELD: engines and pumps.SUBSTANCE: invention relates to a method for epitaxial application of repair material on the surface (38) of the substrate, obtained by directed crystallization. Article is located in fluidized bed (34) for particle drift of repair material over machined surface (38) when rasterizing energy (36) of the laser on the surface for melting of particles and building up of repair material on the entire surface simultaneously. Article is displaced downward (39) in the above layer in direction parallel with orientation of grains in part, with adding material on surface, thus providing continuous epitaxial adding of material on the surface without recrystallization.EFFECT: invention can be used for repair of articles of gas turbine engine.19 cl, 5 dwg

ethod of drilling combustion chamber wall // 2599320
FIELD: aircraft; machine building.SUBSTANCE: method (100) includes a step for preliminary calculation (101) of mechanical stresses, which act on wall (12, 13) part of the turbomachine operation, and drilling (102) at least one hole (21) in the zone of said wall (12, 13). Note here that said drilling (102) is made with at least one cutting tool with cross section corresponding to calculated mechanical stress.EFFECT: invention can be used for drilling walls (12, 13) of turbomachine parts.12 cl, 15 dwg

Tool for holding a turbine-engine part, including a means for attaching and immobilising the part and an element to be attached to said part by brazing or welding // 2598418
FIELD: turbo-machines.SUBSTANCE: invention relates to a tool for holding a turbine-engine part in order to attach metal element (32, 34) onto said part and a method of attachment of metal element (32, 34) on said structural element. Tool comprises a first means (102, 104) for immobilising the part and second means (32, 34) for positioning the element on a surface of the part. Second means are being removable and including template (106, 107) which is to be mounted onto a portion of the part and which comprises an opening for receiving and positioning the element, and means (108) for bearing on element (32, 34) in order to hold the latter against the surface of the part. Peripheral edge of the opening of template (106, 107) comprises at least one notch through which a means for attaching the element onto surface (32, 34) by tack welding is to pass.EFFECT: technical result provides an improvement of fixation accuracy of the metal element on the part during immobilising.10 cl, 10 dwg

Sintering and laser fusion device, comprising means for heating powder by induction // 2598015
FIELD: technological processes.SUBSTANCE: group of inventions relates to laser sintering of metal powder. Laser sintering device for building up a metal part from metal powder includes a laser beam generator, means for deflecting beam to scan a surface of part, a sintering pan including a metal powder used to thicken part by melting metal powder with laser beam, and at least one means for induction heating of metal powder contained in area of said sintering pan. Disclosed is a method of laser sintering for build up of metal part from metal powder, as well as device and method of laser sintering for making a metal part of metal powder.EFFECT: reduction of residual stresses after hardening part.20 cl, 3 dwg

Combined machine for punching and laser cutting of flat metal sheet // 2596540
FIELD: machine building; technological processes.SUBSTANCE: machine comprises fixed base (1), fixed punch head (7), laser cutting head (10) and manipulator (4) for movement of metal sheet (6) in plane (XY) of Cartesian coordinate system. Laser cutting head (10) is retained by structure (9) in form of a compass with a variable aperture, which can move along linear guide (8).EFFECT: disclosed is a structure of combined machine for punching and laser cutting of flat metal sheet.5 cl, 7 dwg

Aluminium alloy // 2596509
FIELD: chemistry.SUBSTANCE: invention relates to aluminium alloy of Al- Si-Cu system and particularly suited for use as sheet product useful in the manufacture of automobiles. Aluminium alloy intended for joining with steel, has the following composition, wt%: Si 0.25-1.5, Cu 0.3-1.5, Fe up to 0.5, Mn up to 0.1, incidental impurities, including Mg in amount of less than or equal to 0.05 separately and less than or equal to 0.15 in total, the rest is aluminium. Joined structure contains steel alloy component and aluminium alloy component with declared composition, joined with steel component. Multilayer aluminium sheet comprises core layer and at least one clad layer, at that at least one clad layer is made from disclosed aluminium alloy.EFFECT: invention is aimed at creation of strong and plastic joint of aluminium alloy with steel without using filler material.31 cl, 2 ex, 3 tbl, 14 dwg

ethod, system and computer program for machine cutting several parts from workpiece material using control rules and variable for cutting // 2594921
FIELD: technological processes.SUBSTANCE: during radial cutting several parts (31, 32, 33, 34) of workpiece material, method includes control of cutting using a set of control rules and variables for cutting of two-dimensional shapes or patterns. One rule or combination of several rules are used for cutting depending on shape or pattern to be cut, wherein said shape or a pattern forms part (31, 32, 33, 34) of workpiece material. Set of control rules includes rules for generating a cell cluster (3A) of parts with various configurations. Said parts can be located close to each other so that distance between adjacent parts is thickness of only one slit from cutting beam every time when shape of said parts allows such possibility. Different set of rules and variables enables to achieve reliable cutting of any configuration parts of workpiece material.EFFECT: invention relates to a method (versions) and a system for machine cutting material into parts and computer-readable medium.18 cl, 11 dwg

Laser welding of pipe-tube plate connection // 2593883
FIELD: technological processes. SUBSTANCE: invention relates to a method of laser welding compounds tube-tube plate. Before welding are assembled compounds tube-tube plate with a gap is less than 0.2 mm. Focal plane of the laser beam relative to welded surface of tube plate at a distance -5…+5 mm. Welding is performed in two stages. At the first stage is shifted from the joint laser beam in the direction of tube plate and penetration. At the second stage the laser beam is directed on the joint and welding is carried out. In welding area is inert protective gas in amount of 10-15 l/min. Tube face ledge height relative to welded surface of tube plate is not more than 1 mm. Penetration may perform with laser beam power of ≥ 1 kW at welding rate of ≥ 25 mm/s. EFFECT: high quality of weld joint. 3 cl, 1 tbl
ethod of multifunctional precision optical sighting grids producing by laser ablation with start-up // 2591034
FIELD: optics; instrument engineering.SUBSTANCE: invention relates to optical instrument-making and method of multifunctional optical sighting grids producing. Method includes cleaning of substrate, application of optical scale topology elements on substrate in light grid zone by laser ablation using infrared femtosecond pulse laser, start-up, adjustment, cleaning with organic solvent, application of metal coating from aluminium or silver. Outside grid light zone reference marks are made by laser. Then, points of focusing laser radiation are set by reference marks and collimator grid scale elements topology are applied by laser ablation on metal coating at depth of metal layer.EFFECT: possibility to produce grids of arbitrary topology, high coefficient of reflection of grid and simplification of manufacturing method.1 cl
ethod for hybrid laser-arc welding aluminised steel parts with gas containing nitrogen and/or oxygen // 2590759
FIELD: laser engineering.SUBSTANCE: invention relates to method of hybrid laser-arc welding, which is carried out by means of electric arc and laser beam, combined with each other in single weld bath, into which molten metal is fed by melting of consumable wire. Welding bath is produced on at least one steel part containing aluminium-based surface coating. Process is carried out with shielding gas. Shielding gas is formed by at least one main component selected from among argon and helium, and at least one additional component selected from nitrogen and oxygen.EFFECT: shielding gas contains from 1 % to 20 % by volume of said one additional component.11 cl, 1 ex
ethod for hybrid laser-arc welding of parts from aluminised steel with wire containing gamma-phase forming elements, and gas containing less than 10% nitrogen or oxygen // 2588978
FIELD: metal processing.SUBSTANCE: invention relates to method of hybrid laser-arc welding of steel parts, containing aluminium-based surface coating. Welding is carried out by means of electric arc and laser beam, combined with each other in single welding bath, in which molten metal is added as result of melting of consumable wire, welding is performed with shielding gas. Consumed wire contains 3-20 mas% of one or more gamma-phase making elements. These elements are selected from C, Mn, Ni and N, and shielding gas is formed from helium and/or argon with addition of less than 10 wt% of nitrogen or oxygen.EFFECT: invention is especially suitable for welding of composite pieces ("tailored blanks"), which are used in automotive industry, or for welding of pipes.14 cl, 1 ex

Device for radiation treatment // 2587367
FIELD: machine building.SUBSTANCE: invention relates to a device for radiation treatment, which is capable of fast and accurate processing of template surface. Device (10) for processing of template surface (W) with a beam (LB) has a source (32) for generating a beam (LB), device (12) for the beam (LB) movement, and several reflectors (14) located on the optical path of the beam (LB) between the device (12) for the beam movement and treated surface. Several reflectors (14) are inclined at a predetermined angle corresponding to the direction of incidence of the beam (LB), the beam (LB) moved by the device (12) for the beam movement passes almost vertically relative to another position of the treated surface.EFFECT: fast and accurate processing of template surface.14 cl, 17 dwg
ethod for laser punching through-hole in non-metal plate // 2582849
FIELD: optics; physics.SUBSTANCE: invention relates to laser punching of through hole in non-metal plate and can be used in producing plates from semiconductor, ceramic and glass-like materials with holes. Plate surface is exposed to pulsed laser radiation. Pulsed radiation wavelength is selected from condition: 1.2<Xh<3.1, where X is plate material absorption at wavelength of laser radiation; h is thickness of plate. Initial laser beam is divided into two beams and coaxially to act on both surfaces of plate with energy density defined by relationship: where e is base of natural logarithm; Q is specific energy of sublimation material; R is coefficient of reflection of material. Surface of plate pre-polished.EFFECT: reduced power consumption in laser punching of through holes in plates of non-metallic materials having volumetric absorption of laser radiation.2 cl, 2 dwg

ethod and device for fabrication of mask for laser unit for production of microstructures // 2580901
FIELD: process engineering.SUBSTANCE: claimed invention relates to laser processing, particularly, to fabrication of masks and apertures for laser unit meant for production of microstructures on the solid body surface. This process includes the formation of gaps on the mask surface to dissipate the laser radiation. Mask gaps dissipating the laser radiation are modified owing to the material density variation as well as material structure and refraction index. Said modification is executed by the beam of fs- or ps-laser or laser on fluorine molecules. Said modified gaps ensure a strong dissipation of the laser incident beam and act as opaque surface during the entire process of microstructure development of the solid body surface.EFFECT: higher wear resistance of masks and accuracy of fabrication.5 cl, 8 dwg

Laser cladding method and apparatus therefor // 2580180
FIELD: physics.SUBSTANCE: laser cladding method comprises feeding a cladding material into the focal region of a laser beam placed on the surface of the article being treated. The initial circular laser beam is used to form a series of parallel annular laser beams, which are converted into a series of conical beams and separately focused along the same optical axis on which the cladding material is fed. The apparatus comprises a laser which is optically coupled with a conical beam forming system, a focusing lens and a cladding material feeding system, an optical system for forming a series of annular laser beams with controlled laser radiation power distribution on annular beams, a rotary mirror with holes for guiding pipes for feeding gas, cooling liquid and the cladding material, and a system of focusing conical mirrors.EFFECT: broader processing capabilities and low power consumption with the high accuracy of making components.3 cl, 1 dwg