achine tools and metal-working not otherwise provided for (B23)

B23            achine tools; metal-working not otherwise provided for(74916)

ethod and device for holes making in part using laser pulses // 2628503
FIELD: physics.SUBSTANCE: defining multiple values of working parameters of the laser generator to run a predetermined diameter of holes in the detail. Defining resonator laser temperature set value depending on the characteristics of the generator running holes and/or material details which perform holes, and regulate the temperature of the resonator on this specified value during the holes making time. The device comprises a laser generator comprising a resonator, in which a solid rod for generating laser pulses is mounted, a cooling system of the resonator by circulating the cooling fluid adjacent to or inside the resonator and a means for controlling the laser operating parameters. The device contains means of automatic temperature control at the specified value generator resonator depending on the characteristics of running holes by changing flow and/or temperature of cooling fluid medium.EFFECT: geometry of the holes is improved.10 cl, 6 dwg

ethod for mechanical treatment of back edge of turbomachine blade // 2628453
FIELD: machine engineering.SUBSTANCE: blade profile is determined by the digital theoretical model. The workpiece is prepared with an outsize along the back edge of the blade relative to the theoretical profile and the mentioned outsize is removed by adaptive mechanical treatment, including positioning the workpiece in the reference machine coordinate system, sounding the position coordinates of the given points (Ni) on the first side of the workpiece along its back edge, determining position deviation (delta Ni) of the given points (Ni) from their positions specified by the theoretical model, splitting the workpiece side into the treatment cells. The vertices of the cells are determined on the basis of the positions of the mentioned points (Ni), determining the amount of the workpiece material taken from the cell surface relative to their vertices and taking into account the mentioned position deviations (delta Ni) and blade treatment.EFFECT: invention use allows to improve the accuracy of the blade production.12 cl, 8 dwg

Head of electric point welding for multi-axis industrial robot and robot containing this head // 2628451
FIELD: electricity.SUBSTANCE: head includes a supporting member with an end portion for attaching to the robot wrist, a pair of welding electrodes held by the arms mounted on the supporting member with the ability to move between open and closed positions, an actuator and an electrical transformer provided with a casing, on different walls of the casing.EFFECT: increasing the compactness and electrical reliability of the device.7 cl, 18 dwg
ethod for manufacturing bimetallic wire from different metals with cold drawing // 2628232
FIELD: metallurgy.SUBSTANCE: invention relates to the treatment of metals by pressure, in particular to the production of composite materials, and can be used to manufacture bimetallic wire of dissimilar metals. The zone, which consists of interconnected metals of the core and shell and carbon nanotubes, previously applied to at least one of the contact surfaces of the metals to be joined. Carbon nanotubes are applied during the preparation stage of the core contact surfaces and shell to the joint. Then, cold drawing is carried out to form a transition zone of the metals of the core, the shell and the mentioned nanotubes.EFFECT: increase uniformity of shell thickness over the length and cross-section.2 cl, 2 dwg

Cutting tool and cutting tool holder having lever in form of pin // 2628186
FIELD: construction.SUBSTANCE: holder (100) includes a socket (102) for a cutting insert, having a support surface (110) with a socket recess (116) occupied by the lever axle (120) and a fastening element (130). The head part (122) of the lever (120) has the rear contact surface (C) of the lever head disposed above the support surface (110), for pressing to the opening (148) a cutting plate (140) in the socket (102). The fastening element (130) engages a threaded opening (118) extending from the socket recess (116) along the axis (T) of the threaded opening. The fastening element (130) includes a guide projection (134) disposed in a blind opening (126) in front of the lever axle (120). The clamping contact surface (B) of the fastening element (130) is disposed adjacent to the front contact surface (H) of the lever (120). The first longitudinal distance (h1) between the rear contact surface (C) of the lever and the front contact surface (H) of the lever is less than the second longitudinal distance (h2) between the front contact surface (H) of the lever and the lower rear contact surface (G) of the lever.EFFECT: simplifying the fastening of the cutting insert.18 cl, 11 dwg

ethod for manufacturing weld bimetallic cutting tool // 2627837
FIELD: metallurgy.SUBSTANCE: after mechanical and thermal treatment of the tool body blank arc welding is performed at a current of 50 to 56 A and an arc voltage of 5 to 6 V, controlling the transfer of electrode metal in the arc by means of pulse wire feed and synchronized pulsed current regime and the formation of a fused layer thickness from 1 to 2 mm. Accelerated cooling is performed after cladding using copper plates attached to the body of the tool blank. Reinforcing mintage of welded metal is performed with surface striker, which impact energy is 6 to 7J. Local release of the welded high-speed cutting steel and the metal of the thermal effect zone (TEZ) at a temperature of 520 to 540°C.EFFECT: method allows to increase the hardness and strength of the metal of the thermal-affected zone, increase wear resistance of bimetallic tool cutting part and reduce energy consumption for its manufacturing.2 dwg, 9 ex

ethod of structuring pressing tape // 2627831
FIELD: technological processes.SUBSTANCE: tape contains surface areas with three-dimensional embossing structures that are transferred to decorative plates. The outer surface of the press belt is digitally printed by coating in droplet form. Then, embossing structures are formed on the tape by removing material from uncoated sections of the press belt or applying it to uncoated portions of the latter. Before structuring the press belt, the length and width of the embossing structures are determined taking into account the expected extension of the press belt in the operating mode.EFFECT: improved method.10 cl, 5 dwg

ethod of manufacturing closed metal ring and device for removing polymers from closed metal ring // 2627829
FIELD: technological processes.SUBSTANCE: invention relates to the field of manufacturing of the variator belts of vehicles using the technology of preventing nitriding defects. In a drum made of polymers, a closed metal ring is polished, a cleaned ring is rolled, nitrided and the adhered polymers are removed. The device comprises a holding tool, a rotation mechanism, a washing tank with an ultrasonic cleaning fluid, and an ultrasonic wave generator.EFFECT: elimination of nitriding defects.8 cl, 15 dwg

ethod of turning processing of the crankshaft, application of the turning of the crankshaft and turning machine // 2627828
FIELD: machine engineering.SUBSTANCE: crankshaft shoulder (9) adjacent to the crankpins (4) on the adjacent jaws (3) are treated by turning with a turning tool (14). The crankshaft rotates around the axis (22) of rotation and clamping, on which the centric longitudinal axis of the crankshaft also formed by the centric root collar (2). As a consequence, the crankpins (4) rotate in a circular path around the axis (22) of rotation and clamping with their geometric axis (6). The turning tool (14) "watches" the moving crankpins (4) along the height and side in two perpendicular directions (32, 36) of the movement. This results in a continuous insertion of the turning tool (14) laterally into the shoulder (9) of the crankpin (4).EFFECT: improving the crankshaft turning accuracy.17 cl, 7 dwg

Application of superflowing with application of powder flux and metal // 2627824
FIELD: metallurgy.SUBSTANCE: powder layer (14) disposed on the substrate (12) of the superalloy containing flux material and metal material is heated energy beam (16) for forming the cladding layer (10) and of a superalloy layer (18) of the slag. Give the molten bath to cool and solidify to form a slag repaired surface of the desired superalloy material. Material is fed in the form of a superalloy wire or strip into the molten bath. Filler material contains only a subset of the extrudate from the elements defining the desired superalloy material. Extruding the filler material in the form of wire or tape may be, for example, nickel, nickel-chromium alloy or nickel-chromium-cobalt.EFFECT: improvement of the application of technology.10 cl, 6 dwg

Soldering compositions // 2627822
FIELD: metallurgy.SUBSTANCE: soldering contains the mixture of powder components, one of which is the first soldering alloy, and the second powder component is the second soldering alloy or metal. The soldering contains the additional powder component, selected from the group consisting of carbides, nitrides, metal oxides and carbon nanotubes. The immiscible while heating alloys are used as the first and the second soldering alloys, the melting temperature of which varies within 10°C.EFFECT: soldering has good thermal fatigue life and low high temperature creep, as well as the high ductility and high plasticity and electrical conductivity.20 cl, 16 dwg
ethod of surfacing iron aluminides // 2627714
FIELD: metallurgy.SUBSTANCE: pre-surfacing the aluminium layer is performed in shielding gases using an electrode wire made of aluminium or aluminium alloys. The aluminium layer is then re-melted using a steel electrode wire. Remelting of the aluminium layer with introduction of liquid steel into the aluminium bath allows, depending on the deposition modes, to form a surfaced layer based on iron aluminides with a chemical composition corresponding to the chemical composition of the intermetallic phases of Fe3Al.EFFECT: high performance properties of the part are achieved due to the high homogeneity of the chemical composition of the surfaced metal.1 ex
ethod for reconstruction of platforms for compressor blades in gas turbine engines (gte) // 2627558
FIELD: engines and pumps.SUBSTANCE: determine the lines for cutting the platforms for repair. Remove the defective parts along the said line. Fabricate the hard-alloy material plates of thickness not more than 0.9 mm with through slots along the contour, coinciding with the planes of the platform repair cut. Fix them on the cut planes with the requirement to maintain the specified length of the platforms, perform heat treatment and final finishing machining. In this case, after removal of the defective parts of the platforms along the specified line of the repair section, a layer of titanium alloy of a given thickness is cladded onto the repair section, and then the plates are fixed using the induction soldering.EFFECT: method will increase reliability of the product during its operation, increase service life of the blades in 1,5-2 times.5 cl, 3 dwg

ethod of electron-beam welding of a plate with finned surface // 2627553
FIELD: metallurgy.SUBSTANCE: welding is carried out from the side of plate. Preliminary places of welding are applied on the outer surface of plate, coinciding with the places of welding on the finned surface. In welding places single-stage through-holes are made with decreasing diameter in the depth of plate. Welded parts are combined. Pins are set in holes made in plate before contact with the fin. The height of pin exceeds the depth of inner hole in plate. After that, spot welding is carried out in the places where pins are installed. The height of pin protrusion into the outer hole is at least half of its depth. Plate and finned surface can be made of thin-sheeted titanium alloy.EFFECT: minimum values of post-welding deformations, high accuracy of assembly of welded parts, excluding their mutual displacement, and possibility of obtaining quality welded joints in different spatial positions.3 cl, 1 dwg, 1 ex
Flux gel for aluminium soldering and method for its production // 2627538
FIELD: metallurgy.SUBSTANCE: flux in the form of gel contains salt components and a binder in the form of a 2-4% solution of polyisobutyl methacrylate in white spirit with the following components ratio, wt %: chloride magnesium 36-38, sodium chloride 7-8, aluminium fluoride 3-5, potassium fluoride 3-5, potassium chloride is the rest. The pre-mixed salt flux components are melted. After the resulting melt is cooled, the solid flux is ground in the binder to produce colloidal gel.EFFECT: flux gel structure provides resistance to air humidification, convenient spot flux application and good solder spreadability.2 cl, 1 ex

Shear disk for cutting sheet materials // 2627528
FIELD: metallurgy.SUBSTANCE: shear disc for cutting sheet materials contains a body of structural steel and a working ring of high-speed or semi-heat-resistant steel. The structural steel body is made with hardness of 43-47 HRC. The operating ring of high-speed or semi-heat-resistant steel with hardness of 60-62 HRC, which is replaceable, is pressed onto the body and fixed to it by means of evenly spaced weld points in the amount of 12-48. The end of operating ring is displaced axially relative to the body by 1-3 mm. The knife is thermally processed after assembly to relieve internal stresses.EFFECT: increasing the durability of shear disc and eliminating the pitting and chipping of cutting edges.3 dwg

End cutter // 2627317
FIELD: machine engineering.SUBSTANCE: end cutter has a hard alloy working part with a wear-resistant coating consisting of one or more layers arranged around the axis of rotation. The cutting edges of the cutter are alternated with the chamfering grooves. At least one layer contains a phase with one of the elements V, Cr, Nb, Ta, Ti, Zr, Hf, Al, Si and has residual compressive stresses. At a distance of at least two-thirds of the working part from the end of the cutter, the ratio of the length of the surface with the wear-resistant coating along the perimeter of the working part of the cutter in each cross-section by its plane perpendicular to the axis of rotation to the circumference around the cutting edges in this cross section is within 0.8…1.2. The ratio of the lateral surface area of the working part from the end of the cutter with the wear-resistant coating applied to this section to its projection onto the imaginary rotational body, formed with cutting edges relative to the rotation axis is within 0.9…1.4.EFFECT: structure rigidity increases, vibrations of cutter in operation reduces.12 cl, 5 dwg

Assembled comb cutter // 2627315
FIELD: machine engineering.SUBSTANCE: cutter comprises a housing with longitudinal rectangular grooves, in which combs with cutting teeth, two covers and washers with spring tangs curved inward are installed. On one side of the housing, the base cover is mounted so that the end plane of the base cover tightly mates with the end plane of the housing. In the longitudinal rectangular grooves of the housing, combs with cutting teeth are installed until their end planes contact with the end plane of the base cover. On the opposite side of the housing there is the second cover, a washer is installed between them so that the spring tangs are curved inward and each tang contacts the end plane of each comb.EFFECT: increased accuracy of the gear processing.2 dwg
Flux for soldering aluminium // 2627311
FIELD: metallurgy.SUBSTANCE: flux contains components in the following ratio, wt %: lithium chloride 31-33, aluminium fluoride 2-4.5, barium chloride 18-19, potassium fluoride 1.5-3, tin chloride-3-10, potassium chloride is the rest. To obtain the flux, melting of potassium chloride, lithium chloride and barium chloride is carried out at a temperature of 750-770°C and a mixture of potassium fluoride and aluminium fluoride is added to the melt. The melt is poured and colled. The obtained solid alloy is ground and mixed with 3-10% tin chloride. The charge is melted at a temperature of 450-500°C and the fobtained flux is poured into bars.EFFECT: flux provides high spreadability of solder and activation of aluminium surface at solder melting point.2 cl, 5 ex

Device and friction stir welding of power storage device // 2627135
FIELD: electricity.SUBSTANCE: each sealed housing (14) of the capacitor or supercapacitor comprises of a tubular element (16) and at least one cover (18) covering the tubular element at its end. There is a connecting strip (30) on the two covers (18) of the two adjacent bodies (14). The dimensions of the strip allow it to contact the cover (18) of each of the bodies. A rotating welding device (50) is engaged with the cover (18) and/or the strip (30). The said device is moved translationally along the axis running along the normal line to the cover (18), with its penetration into the material of the cover (18) and/or the strip (30). The strip (30) is welded to the cover (18) by friction stir welding forming at least one weld seam.EFFECT: maintaining the tightness of each of the connected energy storage devices.11 cl, 5 dwg

Device for cooling electrode of contact point welding (cpw) // 2627133
FIELD: electricity.SUBSTANCE: tube for supplying refrigerant is installed in the holder cavity. The electrode shank is made in the form of a collar with the conical surface and is installed with the thrust in the front holder end. A bushing is fixed on the front part of the holder. The electrode is fixed to the holder by means of a union nut having a conical bottom and enclosing the bushing and the collar. The shank is made with a blind cavity, in which the end of said tube for supplying refrigerant is arranged with gaps. Between the ends of the holder and the shank, a sealing ring can be placed, and said tube is mounted relative to the shank end of the electrode with an axial gap. Between the ends of the holder and the shank, a disc or a cover may be provided in the holder cavity, and said tube is installed relative to them with an axial gap. The holder can be made with a blind cavity and have a wall from the front end thereof, and the tube is installed relative to the bottom of said wall with an axial gap.EFFECT: increasing the electrode resistance due to expanding its cooled surface, ensuring the reliable fixation of the electrode on the holder.5 cl, 3 dwg

Piece coated electrode for arc welding // 2627093
FIELD: electricity.SUBSTANCE: concentrically coated metal rod has a bare section located in the central zone of the electrode in order to connect the electrode to the electrode holder. The centre of the bare section is located at the centre of the metal rod or biased of the length of the rod up to 0.1. The conical transition section of the coating is located on each side of the rod bare section. A contact end is provided on both sides of the electrode. The length of the welding electrode can be increased twice without necessity to reduce the allowable welding current. In this case, the relative length of the bare section of the electrode and the length of cinders decrease, the time share for replacing the electrode decreases. The electrode is fixed in the electrode holder in the middle of the bare section. Welding is carried out firstly by one half of the electrode, but the welding current does not flow through the second half. After melting the first half of the electrode, the arc is ignited from the second end of the electrode.EFFECT: increased reliability of the welding, cost reduction.5 dwg, 3 ex

Cutting tool, holder of cutting tool and instrumental unit of machine for mechanical processing // 2627089
FIELD: machine engineering.SUBSTANCE: cutting tool, the cutting tool holder and the tool assembly are adapted to be fastened to the rotor of the grinding device. These elements comprise connecting means enabling quick and easy assembly or disassembly of the elements and the possibility of strong and reliable fastening during operation.EFFECT: reliability and convenience in operation.9 cl, 18 dwg

ethod for welding and building up metal components made of aluminium by the method of arc welding by metallic electrode in the medium of inert gas with pulsed current and pulsed filler wire // 2627088
FIELD: metallurgy.SUBSTANCE: overlay welding is performed using a filler metal wire made of aluminium alloy, whose composition is identical to that of the deposited aluminium alloy parts to obtain rolls of large cross section. Thermal welding cycle is selected from the condition of minimum residence time in the range of weld metal embrittlement aluminium alloy by controlling the pulse rate of the filler wire feeding rate and welding.EFFECT: implementation of cladding without hot cracking.5 cl, 7 dwg

Synchronically moving hydraulic shears without stand // 2627073
FIELD: machine engineering.SUBSTANCE: shears (1), in particular, cross cutting shears for cutting flat material, include a holder (2) of the upper blade and a holder (3) of the lower blade. And at the holder (2) of the upper blade and/or the holder (3) of the lower blade is guided to move up and down and adapted to move by means of at least one device (4, 5) relative to the other blade holder (3, 2). The movable blade holder (3, 2) is guided by the device (4, 5), designed to take all the cutting and lateral forces.EFFECT: improved operational reliability due to increased strength of the structural components.10 cl, 2 dwg

Device connecting steel pipe ends by orbital welding // 2627066
FIELD: technological processes.SUBSTANCE: device consists of guide supports installed on both sides of respective pipe ends in the welding zone and rigidly clamped. The guide supports have an annular recess in the center with a radial bore for passing through and aligning weld pipes. Clamp members for clamping the guide supports with the pipe ends are solidly connected to the respective outer sides of the guide supports diverted from the weld groove. A frame for accommodating welding and test tools adapted for orbital movement around the weld groove is installed to pivot on the weld groove facing inner sides of the guide supports and to rotate at least 360° around the pipe ends.EFFECT: improved quality of welded connection.10 cl, 3 dwg

Bone screw and method for manufacture // 2626963
FIELD: medicine.SUBSTANCE: orthopedic screw includes a barrel, a thread made at least on a portion of the said barrel, at least one groove and one or more facets cut in at least one groove. This thread has a leading edge, a trailing edge and depth. The groove is formed on a leading edge or trailing edge and is configured to increase the surface area of the respective leading or trailing edges. According to the second version, the orthopedic screw comprises a barrel, a thread made at least on a portion of the said barrel, and a helical groove and one or more facets cut in one helical groove. This thread has a leading edge, a trailing edge and depth. The groove is formed in the barrel between the at least one leading edge and trailing edge configured to increase the barrel surface area. According to the third version, the orthopedic screw includes a barrel, a plurality of the first thread turns, at least one groove and one or more facets cut in at least one groove. The first thread turns are made at least on a portion of the said barrel. The said first thread turns have a leading edge, a trailing edge and depth, wherein a barrel portion remains between the leading edge and the trailing edge of the adjacent first threads. The groove is formed in the barrel between the leading edge and the trailing edge of the adjacent first thread turns and is configured to increase the barrel surface area. According to the fourth version, the orthopedic screw comprises a barrel, a plurality of the first thread turns, made at least on a portion of the said barrel, the said first thread turns have a leading edge, a trailing edge and depth, wherein the adjacent turns are separated by the barrel, and a helical groove formed in the barrel portion between the adjacent thread turns and configured to increase the barrel surface area, and one or more facets cut in a helical groove.EFFECT: reduced probability of twisting.13 cl, 21 dwg

ethod of mechanical processing of blade and gas turbine engine // 2626908
FIELD: engines and pumps.SUBSTANCE: when processing the blades on a machine for volumetric machining, the reference points are determined which should serve as reference points for processing. The blade to be treated comprises a feather, a shelf comprising front and rear holders formed respectively under its front and rear portions to support the sealing jacket, the shank of the blade and the stand located between the shelf and the shank of the blade. The blade is then positioned on the machine using the aforementioned front and rear holders as two reference points for the six-point positioning system and machined. Another invention of the group relates to a gas turbine engine comprising a plurality of blades obtained in the above manner.EFFECT: group of inventions allows to simplify the mechanical treatment of the blade and to reduce its weight.3 cl, 1 dwg
Installation for electrochemical removing scratches and scrolling acute cranks on details // 2626839
FIELD: metallurgy.SUBSTANCE: installation comprises a current source, an anode electrode and a cathode, an electrolyte supply pipe, an anode electrode control mechanism in the form of a pantograph consisting of a lower and upper bars, and a device for holding the pantograph in its operating position, consisting of a pair: permanent magnet - reed switch and electromagnet. The anode electrode is made of a rod mounted with a plug on the movable part of the pantograph and connected to the hood of the treatment chamber by means of a clamp capable of being finely moved up and down by means of an adjusting nut providing contact of the rod with a plate, which is able to contact the processed detail that is a cathode and installed in a break in the electrical circuit in the device that is located in the seating position of the treatment chamber cup and is connected to an electrolyte supply pipe having electrical connection to the power supply.EFFECT: reducing energy costs, simplifying operation.6 cl, 1 dwg
Zinc solder for aluminium solding // 2626835
FIELD: metallurgy.SUBSTANCE: solder contains components in the following ratio, wt %: aluminium 2-7, copper 1-3, silicon 0.01-0.03, tin 0.01-0.2, zirconium 0.01-0.08, the rest is zinc. To produce said solder, zinc and aluminium are melted with addition of copper-aluminium master alloy and silicon-aluminium master alloy at a flow rate up to the required copper, silicon and aluminium contents. Then, 0.01-0.2% tin is mixed in the melt and cooled to 600-650°C. The molten solder is mixed with the flux from the fused mixture of salts in the form of potassium chloride 60-62% and potassium fluoride 38-40% at a rate of 0.1-0.5% by solder weight with addition to the mixture of potassium fluorozirconate at a flow rate of 0.04-0.3% of the solder weight.EFFECT: introduction of zirconium provides soldering with high spreadability in aluminium, the zinc alloy has the ability to deform by rolling or pressing compression to obtain a solder that is convenient for soldering with a gas burner.2 cl, 3 dwg, 1 tbl, 3 ex
ethod of manufacturing one-dimensional diffraction phase grating with sinusoidal profile // 2626734
FIELD: physics.SUBSTANCE: method of manufacturing a one-dimensional diffraction phase grating with a sinusoidal profile consists in sequentially forming grooves by scanning with a pulsed laser beam of the plate contact plane of fused quartz with a plate of pressed graphite. The interruption of scanning after completion of the groove formation with a period corresponding to the grating period, which is provided by the discrete displacement of the focused laser beam, the depth of the groove relief profile being formed with an energy dependent on the pulsed power density, pulse duration, the diameter of the impact area, the number of pulses, the repetition rate, the scanning speed. The surface of the grating is cleaned by wet laser cleaning.EFFECT: reducing the groove shape deviation from the sinusoidal profile along the entire length of the groove, reducting the deviations in the form of the groove from groove to groove within the diffraction phase grating, eliminating microcracks surrounding the grooves, expanding the depth range of the diffraction phase grating.13 dwg

ethod and device for protection from corrosion cracking of welded steel structure // 2626705
FIELD: metallurgy.SUBSTANCE: method involves patching the near-surface cracks by step-by-step impact with pulse current in the zone of tensile residual welding stresses and compressing said zone with dynamic impacts. The device contains a movable portal, provided with movable clamps, compressing springs, two electromagnetic clamps, a capacitor point contact welding machine, two electrodes for one-sided capacitor contact welding, a multi-head caulking stiffener with an air cylinder and a bundle of needle wires fixed to the portal casing, with two springs, located at the top and bottom of the portal to dampen its vibration from the side of the reinforcing pneumatic hammer, and a control unit. In this case, each electrode is fixed in the electrode holder with the ability to move by means of the pneumatic cylinder and connected to the capacitor point contact welding machine. The pneumatic thrust and the pneumatic hammer of the multi-head caulking stiffener are made with the possibility of connecting to a source of compressed air.EFFECT: invention protects welded metal from corrosion cracking.2 cl, 1 tbl, 8 ex

Long hollow wide chord fan blade and method of its manufacture // 2626523
FIELD: ventilation.SUBSTANCE: proposed hollow wide chord fan blade, consisting of a shell made of a sheet of a titanium alloy, and heavy-duty supporting elements rigidly connected to it: plate girder, made of a titanium alloy, and others, made of unidirectional fiber metal matrix material of high composite modulus. Wherein n+1 heavy-duty supporting elements are made in the form of "swallowtail" locks and are placed between the other n heavy-duty supporting elements and on the edges of the blade lock, n-1 heavy-duty supporting elements, made of composite material, have a locking portion formed as a "swallowtail", and disposed within the shell portion in the form of a rod with a constant or gradually narrowing towards the end of the blade quadrangular cross-section, with a side or sides being in contact with the shell and following its shape. All the supporting elements are fixed to each other and the shell through the locking portions by means of diffusion welding at the temperature and pressure, and parts, located inside the shell, are connected with the shell. The plate girder consists of a locking portion made in the form of a "swallowtail" blade lock, made in one piece with a central rod having a box-shaped quadrangular cross-section, columns with a transverse quadrangular cross-section, with sides fastened with a shell and following its shape. Between each column and the central plate girder rod there is a rectangular slot. Each slot is embedded in the locking portion of the side member; in each of these two slots there is a smooth, steel, hardened or cold worked ground tape, and on the plate girder rod there is a smooth, steel, hardened or cold worked ground tape with grooves along the arc of the circle at one side of the tape. In each slot between the smooth tape and the insert strip with the required interference along the corrugation peaks δ>Y∂, where Y∂ is the allowable deformation of the compression of the package corrugation in mm, so a multi-span package, assembled "corrugation into corrugation" from one, two or more steel, hardened or cold-worked ground corrugated tape is placed so that the corrugations of the package resting on the insert tape are placed in its And the tops of the corrugations are supported by grooves in their plane of symmetry, and ƒ≥Y∂+h, where ƒ - the arrow of the crest of the corrugation and h is the depth of the groove of the insert tape. Flanges are made on the free end of the plate girder rod. An insert tape is supported on each flange by a bent end, and a smooth tape is bent to the end of the column and the bent end rests on the bent end of the insert tape so that when the blade oscillates, mutual elastic slippage occurs of the bent ends of these tapes with dry friction. Corrugated tapes of the package, smooth tapes and insert tapes are made of heat-resistant stainless steel, which does not lose its elastic properties at 600°C, and the contacting surfaces of these tapes are covered with a wear-resistant coating that retains its protective properties at this temperature.EFFECT: high strength and static rigidity that persists or accrues during the process cycle, with a highly efficient damping device that reduces dynamic stresses in the blade during impact and vibration to a safe level in all working conditions of the aircraft engine and increases the life and reliability of the fan.11 cl, 9 dwg

ethod of arc-plasma cleaning of metal product surface and device for its implementation // 2626521
FIELD: metallurgy.SUBSTANCE: method involves generating a plasma jet from at least one plasmatron, which is manually or mechanically directed to the surface of the product in the cleaning zone and moved relative to the surface to be treated. The cleaning is performed by a plasma jet, which is scanned over the surface, by softening, melting, evaporation or sublimation of surface contamination from the surface to be cleaned. The positive potential from the power source of the plasmatron arc is connected to the part to be cleaned, forming an anode region of discharge, which is sent to the cleaning zone and scans the surface to be cleaned. During the cleaning process, the surface to be cleaned is prevented from melting by means of a temperature sensor of the cleaned surface, which is electrically connected to the magnetic system of the plasma jet and anode spot movement and the mechanical system of the plasmatron movement. As a result, the surface of pipelines is cleaned providing high cleanliness quality (at the molecular and atomic level), environmentally friendly, as there are no harmful emissions to the environment, no noise and electromagnetic radiation.EFFECT: method and device can work at any high and low ambient temperatures.7 cl, 1 dwg

Cutting method for flat and contour surfaces // 2626519
FIELD: machine engineering.SUBSTANCE: method includes cutting workpiece surface with a tool having a cylindrical generating surface and rectilinear generator, which is given the main rotational and translational motion in the milling direction. The tool is given an additional reciprocating feed motion in the direction of the rectilinear generator of the tool with a stroke length not exceeding the difference between the milling width projection on the plane, running through the tool axis, and the length of the tool working part. The rotating motion speed is set to a value which is not less than eight times the speed of said translational feed motion in the cutting direction.EFFECT: improved tool strength.3 dwg
ethod of manufacture of bimetallic wire from precious metals // 2626260
FIELD: metallurgy.SUBSTANCE: method of manufacturing a bimetallic wire made of precious metals containing a core and a shell includes rolling a bimetallic semi-finished product. A silver rod is used as the core, and as a casing, a ribbon made from a 585-alloy gold alloy containing, wt %, gold 58.0-59.0, silver 7.5-8.5, iridium 0.001- 0,05, rhodium 0,001-0,1, copper - the rest. The rolled strip is folded around the core provided that the cross-sectional areas of the core and the bimetallic half-finished product are 0.27-2.6, the bimetallic semi-finished product is subjected to long rolling without preheating, followed by drawing.EFFECT: increasing the mechanical and operational characteristics of finished products.2 tbl, 2 dwg

Electrode holder for resistance spot welding (rsw) // 2626259
FIELD: electricity.SUBSTANCE: electrode holder rod has the longitudinal cavity with the conical bottom, in which the coolant tube is placed with the lateral clearance. From the front end side of the electrode holder, the eyes are provided, between which the electrode in the form of the disc is clamped by means of the fastener. In each of the rod eyes, there are longitudinal channels to supply and discharge the coolant, which are connected together by the common transverse channel, located along the end of each eye. One of the longitudinal channels of each eye is connected to the rod longitudinal cavity at the conical bottom. Another longitudinal channel of each eye is connected to the lateral clearance of the electrode holder rod longitudinal channel. The coolant supply tube is installed with its front end stop into the conical bottom of the cavity through the sealing element, separating the coolant supply and discharge channels. The side surface of the electrode is made as multifacet.EFFECT: disc electrode resistance increase and improvement of its ends connection electrical conductivity with the holder rod eyes.4 cl, 2 dwg
ethod for restoring and strengthening working bodies of soil cultivating machines having beam-like wear // 2626129
FIELD: agriculture.SUBSTANCE: two-layer surfacing of materials of different hardness along the beam-like wear axis is carried out. The first layer is surfaced with an electrode with a low-carbon rod. While surfacing the second layer, the paste is used, which contains 65…70% of PRH30SRNDJu-type iron-based powder, 20…23% of titanium carbide, 3…5% of nickel, and BF-2 glue - the rest. Wherein the paste is applied with a layer of 1.6…1.8 mm onto the surface of the first surfaced layer, dried until solidified at a temperature of 80°C for 6…8 minutes, and surfacing is carried out by an electric arc of direct polarity, using a vibrating carbon electrode, while the current is 55…60 A, voltage - 27…30 V, vibration frequency and amplitude of the carbon electrode - 8…10 Hz and 2…3 mm respectively.EFFECT: increasing the hardness and wear resistance of restored and strengthened working bodies of soil-cultivating machines in conditions of intensive abrasive wear.1 tbl
Process of obtaining quick-resistant boron-free solder nickel brazing products from corrosive-steel, solder, peak connection and method of its obtaining // 2625924
FIELD: metallurgy.SUBSTANCE: in accordance with the method for obtaining a rapidly quenched non-porous solder after smelting, the nickel alloy is subjected to induction melting and the solder tape is cast by a quenching copper disk rotating at a speed of 15-30 m/s at an inert gas ejection pressure of 0.2-0.7 kg/cm2 at casting temperature 1250-1350°C. Solder has the following composition, wt %: Cr 3-12, 4-7 silicon, 2.5-5 beryllium, nickel remainder. Solder made as rapidly quenched amorphous ribbons with flexible or submicrocrystalline. The soldering is carried out under vacuum conditions (1÷5)×10-5 Mm Hg. By heating to a temperature of 1130-1170° with a speed of 20°C/min followed by 30-60 min and cooling of the brazed product with the oven. The soldered joint made of steel 12X18H10T, obtained with the use of this solder, is characterized by the tensile strength of the compound 520±20 MPa.EFFECT: improving the structural uniformity of the soldered seam area and products strength compound.14 cl, 3 dwg, 3 ex

Nickel-base superalloy preweld heat treatment // 2625921
FIELD: metallurgy.SUBSTANCE: preliminaryheat treatment method before welding of Inconel 939 nickel alloy turbine component comprises heating the turbine component to a first temperature in the range from a temperature 35°C (19.4°C) below the phase dissolution temperature γ' and to the onset temperature of the alloy melting and holding at this temperature, cooling at a rate of 1°F (0.56°C) per minute to a temperature of 1,900°F(±25°F) (1,038±15°C) and holding at this temperature, cooling at a rate of 1°F per minute to a temperature 1,800°F(±25°F) (982±15°C) and holding at this temperature. Then, the component is cooled with a velocity 1°F per minute to a temperature from 1,650°F(±25°F) to 1,450°F(±25°F) ((899-788)±15)°C.EFFECT: cracking under deformation aging during welding and subsequent heat treatment.10 cl, 9 dwg, 2 tbl

ethod of manufacture of integrally-machined rotor of gas turbine engine // 2625860
FIELD: engine devices and pumps.SUBSTANCE: method involves the use of end milling cutters, which do roughing machining by cutting blade-to-blade grooves of the same width in the radial direction, and finishing by milling the profile of the airfoil from the tip of the blade to the transition radius of the hub. When finishing, the removal of metal is done successively in rows alternating from the pressure side and the back and measured by the height of the blade airfoil. The width of the first row α1 is selected less than or equal to half the width of the subsequent row α2, and the width of subsequent rows αi - equal to or less than the previous row αi-1 provided that the alternation of rows does not lead to a symmetrical removal of metal from the pressure side and the back and ensures maximum rigidity of the blade being treated.EFFECT: accuracy of rotor manufacturing.3 dwg
Flux-additive // 2625509
FIELD: metallurgy.SUBSTANCE: flux additive is designed for mixing with fused fluxes and can be used for submerged arc welding of steels. The flux-additive contains components in the following ratio, wt %: strontium-barium carbonatite 1-15, sodium liquid glass 25-50, dust of electrostatic precipitators of aluminium production 35-74. The dust of electrostatic precipitators of aluminium production contains, wt %: Al2O3 20-46.23; F 16-26.7; Na2O 7.6-15; K2O 0.4-6; CaO 0.6-2.3; SiO2 0.5-2.48; Fe2O3 2.1-3.27; Ctotal 12.5-30.2; MnO 0.07-0.9; MgO 0.06-0.9; S 0.08-0.19; P 0.09-0.18.EFFECT: improved mechanical properties of welds, in particular, impact strength at temperatures below zero due to reduction of the level of contamination with nonmetallic inclusions.1 tbl

ethod of group hole drilling and device for its implementation // 2625378
FIELD: electricity.SUBSTANCE: method involves simultaneous drilling of a group of holes with electrodes, where a grate of dielectric material is used as a pattern with holes, the cross-sectional area of each of which is not less than the minimum cross-sectional area of a drilled hole in the part from the electrode outlet side. The axes of the holes in the grate are aligned with the axes of the electrodes and, when drilled after opening the holes, the electrodes are moved in the feeding direction until any of the electrodes are pressed against the wall of the hole in the grate, the movement of which provides transmission of the signal of stopping the drilling process by means of a contact-type pressure gauge. The device comprises of electrodes with a feeding mechanism and is provided with a grate of dielectric material as a pattern with holes which axes are aligned with the electrode axes and the cross-sectional area of each hole is not less than the minimum cross-sectional area of the drilled hole in the part on the electrode outlet side thereof and of the contact-type pressure gauge, connected to the grate and to the electrode feeding mechanism and the drilling process switch.EFFECT: increased accuracy of the electro-erosion group hole drilling of a metal part.2 cl, 2 dwg

ethod of metallic and composite blanks manufacture from sheet materials // 2625372
FIELD: metallurgy.SUBSTANCE: winding on mandrel is carried out simultaneously at least for two sheets of materials with different strength properties, rolled into rolls. Winding is carried out with tension of the wound sheet material with higher strength properties, which is 10-60% of its strength limit, and with tension of the wound sheet material with lower strength properties, up to 33% of its strength limit. The tension of material with higher strength properties is selected above the yield point of material in contact with it of material with lower strength properties. Wound layers are welded under pressure.EFFECT: increasing the density of winding, obtaining blanks with uniform chemical composition and uniform distribution of physical and mechanical properties along their cross-section.10 cl, 1 dwg

Device of electromagnetic pulse welding, including isolator for welding metal sheets // 2625368
FIELD: metallurgy.SUBSTANCE: device used to connect the metal sheet 11 to a metal piece 12 spaced from it, contains a coil 4 and an electric power source 2 connected by a current conductor 3 to a coil 4, which is formed with a passive part 42 and an active part 41 with the possibility of placing on the weld metal sheet 11, the passive part 42 having a larger cross-section than the active part 41. The device is also provided with a cooling isolator 5 made of a material, which, compared to the material of the coil 4, has a higher thermal conductivity and lower magnetic and electrical conductivity, the cooling isolator 5 being placed adjacent its surface to the surface of the active part 41 of the coil 4, from its heat and mechanical support.EFFECT: using the invention allows to increase the reliability of connecting the sheet to the workpiece.15 cl, 3 dwg
Flux for welding and surfacing // 2625153
FIELD: metallurgy.SUBSTANCE: flux contains components in the following ratio, wt %: dusty ladle slag of rail steel production 30.0-50.0, dusty wastes of aluminium production 5.0-25.0, liquid glass 39.0-65.0, strontium-barium carbonatite 1.0-10.0. Strontium-barium carbonatite containing, wt %: SrO=1.41-6.25; BaO=6.29-16.86; TiO2=0.02-0.05; Cr2O3=0.05-0.20; Al2O3=1.6-3.05; Na2O=0.37-3.02; K2O=0.85-2.69, CaO=13.6-18.9; SiO2=12.82-41.22; Fetotal=4.18-14.85; Ctotal=1.32-8.45; MnO=0.06-0.33; MgO=0.48-6.24; S=0.20-0.22; P=0.02-0.04.EFFECT: invention ensures a high quality of the deposited layer and the weld due to the exclusion of pores and shells in it, and the low level of steel contamination with exogenous nonmetallic inclusions.1 tbl
ethod and device for mechanical processing of crankpins of large-sized crankshaft shaft on a turning machine // 2625151
FIELD: machine engineering.SUBSTANCE: crankpins are processed on a lathe when the large-sized crankshaft rotates around the axis of the crusts alternately by grinding and turning. In this case, a grinding device is used comprising an endless abrasive belt of the appropriate grain size stretched on the rollers which is attached to the slide support of the lathe and a turning device comprising a two-position tool head with a right or left cutter and three support rollers for placing on the connecting rod of crankpin, which is fixed on the support of the lathe.EFFECT: use of the invention makes it possible to increase the accuracy of processing and to reduce the roughness of the surfaces of the connecting rod necks.3 cl, 5 dwg

ethod of electrolytetic-plasma welding of aluminium and its alloys // 2625145
FIELD: electricity.SUBSTANCE: preliminary combining the weld zone in the welded products. The negative potential is applied to them and the weld zone is immersed in the electrolyte. A conductive plate is also immersed into the electrolyte, onto which a positive potential is applied. A voltage is established between the cathode, which is the welded articles or materials, and the anode, which is the electrolyte, in the range 50≤U≤1000 V and discharge current in the range from 1≤I≤500 A. The discharge is ignited between the welded products. The welding time is set for at least 1 second. As electrolyte, aqueous solutions of salts or acids or alkalis with a hydrogen index in the range of 2≤pH≤11.EFFECT: ensuring the welding of products from aluminium and its alloys in a non-inert environment without reducing the technological parameters of aluminium.3 dwg

Electrode holder for resistance spot welding // 2625143
FIELD: metallurgy.SUBSTANCE: first tube for cooling medium supply is installed in the longitudinal cavity of the electrode holder rod. The bolt for fastening the electrode-roller is made with the longitudinal cavity and installed from the shank end face. The rod longitudinal cavity has the conical shaped bottom, opened into the transverse window connecting the cavity of the first cooling medium supply tube to the bolt cavity. The first tube is installed with the rest into the mentioned bottom of the cavity through the sealing element, sealing the lateral clearance of the tube, which is connected by the transverse window to the shank cavity. The second cooling medium supply tube is located in the shank cavity and in the bolt cavity. The ring groove is provided on the outer surface of the bolt, and the ring grooves are provided on the outer surface of the shank, separated from each other by the ring ribs with grooves, shifted in the angular direction in the adjacent ribs. The ring grooves and sealing elements are arranged with the cooling medium ability to circulate in the cooling area.EFFECT: invention increases the efficiency of electrode cooling and its durability, the electrical conductivity of the conical connection the shank-electrode is improved.1 dwg

Electrode holder for resistance spot welding // 2625142
FIELD: metallurgy.SUBSTANCE: tube for the cooling medium supply is installed in the dead-end longitudinal cavity of the electrode holder rod. In the bolt head to fasten the roller electrode, there is the longitudinal cavity opened into the atmosphere, passing into the bolt cavity, filled with the porous material. The bolt is threaded from the shank end in its dead-end cavity, the part of which at the bottom is filled with the porous material. The dead-end longitudinal cavity of the rod is connected by the transverse window to the mentioned shank cavity, filled with the porous material. According to another embodiment of the electrode holder, the bolt is made with the longitudinal grooves, formed on its side surface, and the bolt head has opened into the atmosphere dead-end longitudinal cavity, connected by the transverse windows to the mentioned longitudinal grooves of the bolt. The dead-end longitudinal cavity of the rod is connected by the transverse window to the mentioned shank cavity, filled with the porous material.EFFECT: reduction of the electrode heating and increasing of its resistance, the zero-clearance connection of the electrode to the shank improves its thermal and electrical conductivity.3 cl, 2 dwg
 
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