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

B23            achine tools; metal-working not otherwise provided for(74916)
ultilayer aluminium sheet for flux-free high temperature brazing in controlled atmosphere // 2642245
FIELD: metallurgy.SUBSTANCE: multi-layer sheet for flux-free high temperature brazing comprises an aluminium alloy core coated with intermediate layer of aluminium alloy, and solder of aluminium alloy applied on the intermediate layer. The core is made of 3XXX aluminium alloy containing, wt %: Mn<2.0, Cu≤1.2, Fe≤1.0, Si≤1.0, Ti≤0.2, Mg≤2.5, Zr, Cr, V and/or Sc in total ≤0.2, the rest is Al and unavoidable impurities. The intermediate layer is made of aluminium alloy containing, wt %: Mg 0.2-2.5, Mn <2.0, Cu≤1.2, Fe≤1.0, Si≤1.0, Ti≤0.2, Zn≤6, Sn≤0.1, In≤0.1, Zr, Cr, V and/or Sc in total ≤0.2, the rest is Al and unavoidable impurities. The solder is made of an aluminium alloy containing, wt %: Si 5-14, Mg<0.02, Bi 0.05-0.2, Fe≤0.8, Zn≤6, Sn≤0.1, In≤0.1, Cu≤0.3, Mn≤0.15, Sr≤0.05, the rest is Al and unavoidable impurities. The core material and the intermediate layer have higher melting point than the solder, and the intermediate layer is protective relative to the core. The total thickness of the cladding layer consisting of the intermediate layer and solder layer with respect to total sheet thickness is 3-30%. Soldering can be carried out in inert or reducing atmosphere without necessity of for applying the flux.EFFECT: possibility for soldering complex designs with corrosion potential.16 cl, 2 tbl
ethod of forming microrelief on surface of metal articles // 2642243
FIELD: metallurgy.SUBSTANCE: method of forming the microrelief on the surface of metal articles includes treatment of article surface in vacuum with concentrated flow of energy, localised in cathode spots of cathode spots of vacuum-arc discharge moving along the article surface, burning between the article being the cathode and anode, in this case surface treatment of the article is carried out in vacuum pressure range from 10 Pa to 200 Pa.EFFECT: simplification of microrelief formation on the surface of metal articles, elimination of decarburization and oxidation of the treated surface, possibility to process surfaces of complex geometric shape with increase of process efficiency due to high movement rate of cathode spots.5 dwg
ethod for production of coatings // 2642240
FIELD: blasting.SUBSTANCE: invention relates to technology for production of coatings on metals using the energy of explosives and can be used in the manufacture of parts for energy and chemical plants with enhanced heat resistance. The pack is prepared for welding with a symmetrical arrangement between two aluminium plates with 1.5-2 mm thickness, the plates of tri-metal are plates of alloyed steel on both sides with clad low-carbon steel. The thickness of said plate is chosen not less than 3 mm, the thickness of its cladding layers is within 0.3-0.5 mm. The same explosive charges are arranged on the two sides of the pack on the surfaces of aluminium plates, and explosion welding is carried out by explosion with simultaneous initiation of detonation in charges. Detonation velocity in each explosive charge equals to 2000-2700 m/s, the explosive charge height and the welding gaps between the metals to be joined are selected from the condition to obtain impact velocity of aluminium plates with the cladding layers of low carbon steel of the tri-metal plate within 370-490 m/s. Thermal treatment of welded five-layer blank to form solid intermetallide diffusion interlayers between aluminium layers and the layers low-carbon steel is carried out at 660-665°C for 0.7-1 H. Then it is cooled with the furnace to temperature 640-650°C. Holding is carried out at this temperature for 2-3 hours with subsequent air cooling up to spontaneous separation of aluminium layers from low-carbon steel of intermetallide diffusion layers with formation of solid heat-resistant coating from intermetallides of aluminium-iron system on the surfaces of low-carbon steel layers.EFFECT: provided simultaneous production of intermetallic coatings on both sides of said tri-metal plate having high heat resistance, low roughness amplitude with reduced susceptibility to crack formation during heat changes without the use of deficient and expensive nickel in the process scheme, with reduced number of explosion welding operations up to one.2 dwg, 1 tbl, 4 ex

ethod for obtaining permanent joint of components made of dissimilar materials, one of which is made of plastic metal // 2642239
FIELD: technological processes.SUBSTANCE: threaded holes (2) are made in the first component (1). On the component (3) made of plastic metal, recesses (4) for heads of fastening elements (5), coaxial to the holes (2), are made. The components (1) and (3) are fastened by the fastening elements (5), wherein the heads of the fastening elements (5) are embedded into the recesses (4) until formation of free space between the heads and the component (3) surface. The component (3) made of plastic material is affected by a rotating cylindrical tool (6) to heat it to the temperature causing its plasticization. When moving the tool, the mentioned free space of the recesses is filled with plasticized metal (7) of the second component (3), ensuring closure of the heads of the fastening elements (5) in them, receiving hermetic permanent joint. During the heating of the second component, when the cylindrical rotating tool (6) is moving, the first component is cooled.EFFECT: method provides high structural strength of the permanent joint of dissimilar materials.2 cl, 5 dwg

ethod of laser welding of longitudinal pipe seam (versions) // 2642218
FIELD: metallurgy.SUBSTANCE: method includes preparation for welding with blunting on the edges of a pipe blank, pipe moulding, assembly and laser beam welding with an application of a root weld above and weld seam. In preparation for welding pipe blanks at blunting one of its edges inclined beads of metal alloy are fused on at a distance from each other in the ascending direction relative to the direction of movement of the laser beam during welding according to the first embodiment. According to the second embodiment, the inclined beads of metal alloy are fused on downwardly relative to the direction of movement of the laser beam during welding. During the assembly the edges of the pipe blank are compressed, forming inclined channels between them, which ensure the discharge of gases during laser welding of the longitudinal pipe seam.EFFECT: improving the processability and quality of welded pipe joints.4 cl, 3 dwg

Devices, systems and methods of three-dimensional printing // 2641945
FIELD: printing industry.SUBSTANCE: laser light source generates a coherent beam of visible light through stimulated Raman scattering. The substrate is in optical communication with said laser light source. Scanning module is placed after a laser light source and is made with scanning capabilities of coherent beam of visible light on the substrate according to the specified form of a three-dimensional object. The computer control system is operatively connected to the laser light source and the scanning module and is configured to control the scanning module and the power modulation of said laser light source to form said object in said substrate.EFFECT: creation of a high-power laser source of a visible high-brightness range to obtain improved resolution and print speed.48 cl, 7 dwg, 2 tbl

ethod to control output characteristics of rotor in form of its carrying capacity and rigidity // 2641942
FIELD: machine engineering.SUBSTANCE: method includes installation of the rotor in thrust bearings located at its front and rear ends, and on the side of the thrust bearings of gas-static bearing and a conical gas-static bearing with taper of 0.5-20% formed by conical part of the rotor and conical insert which are installed with radial clearance therebetween. The axial movement of the rotor relative to the conical insert is controlled by changing said radial clearance by changing the gas pressure which is fed to thrust bearings through said gas-static bearings.EFFECT: use of invention makes it possible to simplify the process for controlling the bearing capacity and rigidity of the rotor.2 dwg

ethod of arc-mechanized pulse welding // 2641940
FIELD: electricity.SUBSTANCE: negative pole of the DC power supply is connected to a non-consumable electrode, and its positive pole is connected to the product and to two consumable electrodes having different chemical composition. Arc between nonconsumable electrode and product is lighted, and then periodically the product is turned off from the positive pole of the power supply by connecting to it consumable electrodes with indirect arc ignition between each of them and nonconsumable electrode. The duration of the current flow in each of the consumable electrodes and the value of current in the period of burning of indirect arc are regulated. Periodic connection of the positive pole of power source is carried out in the sequence "product - first consumable electrode - product - second consumable electrode - product". Consumable electrodes of different diameters can be used.EFFECT: method ensures the chemical composition of seam with a specified content of alloying elements.3 cl, 3 dwg, 2 tbl

Device of determination of geometric errors in motion trajectory of milling-machine table with computer numerical control // 2641939
FIELD: measuring equipment.SUBSTANCE: device contains a mandrel with a tapered end that a measuring rod contacts with. The measuring rod is installed on the antifriction guideways of the bed. The mandrel is designed to be installed in the machine spindle. In addition, the device contains a cylindrical hinged joint with a support, fixed on the machine table, with the joint being installed on the said hinged joint to rotate the body and carriage, on which the bed is installed, and with the second measurement device, measuring shifts of the body in relation to the support of the cylindrical hinged joint. Using the program, the machine table is set to move in circular trajectory with a center, associated with the spindle axis. The geometric errors of the table motion trajectory are determined by a measuring device, while they are reduced by the shift of the body in relation to the hinged joint, which is determined by the second measuring device. The obtained error of the circular trajectory is recalculated into errors for X and Y axes, which are used for the respective compensation in the Computer Numerical Control system.EFFECT: application of the invention allows to increase the milling accuracy.5 dwg
ethod of powered semiconductor devices welding // 2641601
FIELD: electricity.SUBSTANCE: in the hole of multiple cassette a supporting glass bushing is previously inserted and connectable assembly components of semiconductor device made in the form of semiconductor crystals, heat sinks and outputs, are uploaded. Place soldered gaskets are placed between them and the resulting assembly is welded in a furnace with a reducing or inert medium by heating to a temperature above the melting point of the solder. The internal diameter of the glass bushing corresponds to the dimensions of loaded parts of semiconductor device assembly.EFFECT: method allows to increase the degree of alignment of the elements of semiconductor devices assemblies and to prevent mechanical damage to assembly crystals when they are unloaded from the cassette after welding.5 dwg, 1 tbl
ethod of producing wear-resitant coating for cutting tool // 2641600
FIELD: technological processes.SUBSTANCE: vacuum-plasma application of wear-resistant coating, made of niobium, titanium and zirconium nitride is performed at the following ratio of the components, at. %: niobium 65.7, titanium 25.4, zirconium 8.9. The coating is applied by three cathodes, which are horizontal in one plane, the first and the second one of which are made of niobium and installed opposite each other, and the third cathode is composite of titanium and zirconium and placed between them.EFFECT: as a result of the application of the wear-resistant coating, the operating capability of the cutting tool is increased.1 tbl
Powder wire // 2641590
FIELD: metallurgy.SUBSTANCE: powder wire comprises the following, wt %: steel shell 67.0-68.0, ferromanganese 4.00-8.00, ferrosilicon 1.90-3.40, ferrochrome 4.6-25.50, ferromolybdenum 0.50-2.60, ferrovanadium 0.06-0.5, nickel 0.05-1.00, cobalt 0.20-0.95, carbonfluorine-containing dust of aluminium production filters 0.70-6.95, iron - the rest.EFFECT: invention allows to increase the mechanical properties of the weld metal, prevent the formation of cold cracks in the process of welding, exclude pore formation and reduce the hydrogen content in the weld metal by introducing fluorine-containing components and creating additional gas protection, and reduce the cost of the welding process by optimizing the composition of the charge and efficient use of production wastes.2 tbl

ethod of welded joints treatment and mill cutter for its implementation (versions) // 2641589
FIELD: metallurgy.SUBSTANCE: welded joint is exposed to a rotating cylindrical mill cutter, having at its lower end a conical projection with base diameter d and the angle between the base and the cone side surface ϕ=arc Sin [(0.1-0.8)/d] wherein the mill cutter is set at an angle ϕ1, equal to the angle ϕ, so that the lower point of the mill cutter end contacts the base metal followed by moving the mill cutter at the angle forward along the weld seam.EFFECT: use of the invention makes it possible to treat welded joints with plastic deformation, that increases their simultaneously removed by the core to the level of the base metal.3 cl, 2 dwg
ethod of contact butt welding of rails // 2641586
FIELD: transportation.SUBSTANCE: after preliminary machining, heating the rail ends to be welded and settling are carried out. After settling, an exposure of 5÷15 seconds is carried out, then alternating electric current 2÷4 is passed through the welded joint in pulses with the duration of 0.5÷220 seconds at the intervals of 10÷40 seconds at the current density of 2÷40 A/mm2.EFFECT: required microstructure and mechanical properties of the welded joint without additional heat treatment, excluding the defects in the weld seam and the weld zone, reducing the duration of the rail joining process.1 tbl

ethod of mechanical processing of steel casting with fragmentation of chips // 2641444
FIELD: technological processes.SUBSTANCE: method involves preliminary preparation of the surface to be treated by heating with a continuous laser beam to the depth of allowance being removed. The laser beam is moved in a straight trajectory with linear speed and with constant power and wavelength angle to the surface of the workpiece in the range from 75 to 80° in the form of focused light spot diameter of which is chosen from the condition of providing sufficient power density, enough for phase transformations in the structure of workpiece on the depth of the allowance and the formation in it of local metastable zone with altered elastic properties, the intersection of which with cutting plane provides segmentation and fragmentation of chips.EFFECT: reliability increase.5 dwg
ethod of cutting billet, executed of magnesium or magnesium alloy // 2641443
FIELD: technological processes.SUBSTANCE: method of cutting materials with a laser beam can be used in engineering for cutting magnesium alloys. In the cutting process, the products of destruction are removed from the cutting area by means of gas. As a process gas, an inert gas of high purity is used. Process gas is supplied at an acute angle to the surface of the front cut directly to the surface of the billet, angle 2-10° to the axis of the laser beam under pressure not less 6 bar.EFFECT: possibility is provided to cut magnesium and its alloys with a laser beam without igniting the metal at the front and the surface of the cut, and its particles removed from the cutting zone.1 dwg
ethod for production of multilayer coating for cutting tool // 2641441
FIELD: technological processes.SUBSTANCE: application of multilayer coating is performed. First, the bottom layer of titanium and chrome nitride is applied at the following ratio of the components, wt %: titanium 85.75-90.25, chrome 9.75-14.25. Then, the intermediate layer of nitride of titanium, chrome and aluminium compound is applied at the ratio of the components, wt %: titanium 70.5-79.5, chrome 6.5-9.5, aluminium 14.0-20.0. Then, the top layer of titanium nitride is applied. The coating layers are applied with the help of three cathode, which are horizontal in one plane, the first of which is composite of titanium and chrome, the second one is made of a titanium and aluminium alloy and located opposite the first one, and the third cathode is made of titanium and placed between them, while the bottom layer is applied with the help of the first and third cathode, the intermediate layer is applied using all three cathodes, and the top layer is applied with the help of the third cathode.EFFECT: higher operating capability of the cutting tool.1 tbl
ethod for production of multilayer coating for cutting tool // 2641440
FIELD: technological processes.SUBSTANCE: application of multilayer coating is performed. First, a lower layer of titanium and aluminium nitride is applied, with their ratio, wt %: titanium 70.0-79.0, aluminium 21.0-30.0. Then, an intermediate layer of titanium, aluminium and chrome compound nitride is deposited at a ratio, wt %: titanium 70.5-79.5, aluminium 14.0-20.0, chrome 6.5-9.5. Then, the top layer of titanium nitride is applied. The application of the coating layers is carried out by three cathodes arranged horizontally in one plane, the first of which is made of a titanium and aluminium alloy, the second one is made of titanium and chrome and arranged opposite the first one, and the third one is made of titanium and arranged between them, while the lower layer is applied using the first cathode and the third cathode, the intermediate layer - using all three cathodes, and the upper layer - using the third cathode.EFFECT: higher operating capability of the cutting tool.1 tbl
ethod for production of multilayer coating for cutting tool // 2641438
FIELD: technological processes.SUBSTANCE: method for production of multilayer coating for a cutting tool, in which ion-plasma application of multilayer coating is carried out, consisting of a lower nitride layer of titanium and silicon compound with component ratio, wt %: titanium 97.9-98.5, silicon 1.5-2.1, an intermediate nitride layer of titanium, silicon and molybdenum compound in component ratio, wt %: titanium 93.1 -95.0, silicon 1.0-1.4, molybdenum 4.0-5.5, and an upper layer - of titanium nitride. The coating layers are applied horizontally in one plane by three cathodes, the first of which is made of a titanium and silicon alloy, the second one is made of a titanium and molybdenum composite and is placed opposite the first, and the third is made of titanium and is placed between them. The lower layer is applied using the first and third cathodes, the intermediate layer - using all three cathodes, and the upper layer - using the third cathode.EFFECT: increased cutting tool serviceability.1 tbl
Expanding cone and method of its production // 2641437
FIELD: metallurgy.SUBSTANCE: cone is made of hypereutectoid steel, which composition includes the following elements, wt %: C: 2.2 to 2.4, Si: 1.8 to 2.0, Mn: 1 to 1.5, Cr: 0.5 to 0.8, Ni: 0.8 to 1.2, Mo: 0.35 to 0.5, V: ≤0.15, Cu: 0.2 to 0.3, S: ≤0.025, P: ≤0.025, the rest is Fe.EFFECT: required frictional resistance, wear resistance, good automatic lubrication ability, and long service life are provided.3 cl

ethod of welding annular inside seams and device for its implementation // 2641430
FIELD: electricity.SUBSTANCE: according to the method, a collar is made on one of the pipes, which is positioned over the welded end of the other pipe. A burner is set in the welding pipes with the location of the electrode rotation axis and the electrode end on different sides relative to the burner rotation axis and the electrode is rotated by eccentricity amount. Welding is carried out in two passes of the electrode, wherein the root seam is made during the first pass, and the metal of the collar is directed towards it during the second pass. The device comprises a burner, a holder and an endoscope mounted in the through-channel provided in the burner. The burner is rotatably mounted and the electrode holder is mounted on the burner with the possibility of eccentric rotation relative to the burner rotation axis.EFFECT: group of inventions allows to weld raked out full-strength seams from the inside when the diametre of the welded joint exceeds the diametre of the inlet channel, through which access to the welding location is ensured.5 cl, 9 dwg
ethod of arc welding with piece coated electrode // 2641216
FIELD: electricity.SUBSTANCE: electrode is fixed in the electrode holder, which is arranged to move towards the article under the action of gravity. Electrode is brought together with the product during arcing according to electrode melting rate and moving the welding bath on the product along the lines of welding with cross-section regulation of welded roller along its length. Before welding, for a given rod diameter and welding current, a change in the length of the molten portion of the electrode is established as a function of the arc burning time, which determines the change in the electrode melting rate. In the welding process, the electrode and the product are brought closer with the change in speed, depending on the electrode melting rate. The electrode or product is moved along the welding line with a speed change which is established based on the obtained electrode melting rate and the required cross-sectional area of the welded roller along its length.EFFECT: invention makes it possible to automate the supply of electrode to the weld pool, improve the quality of welding joints and the productivity of work during welding of short joints due to the use of an operator to replace the electrodes.2 cl, 5 dwg, 3 ex
Pressure welding with heating // 2641215
FIELD: metallurgy.SUBSTANCE: plastic deformation of welded parts by compression is carried out by applying loads to the welded parts in a plane perpendicular to the plane of their physical contact. The rate of compression deformation is periodically reduced by reducing said load. During the period of compression deformation rate reduction, the load to the welded parts is applied in plane that is parallel to the plane of welded parts physical contact, and shear deformation is carried out.EFFECT: method prevents formation of cavities between microprojections by reducing metal resistance to plastic deformation.1 cl

Laser optic head // 2641213
FIELD: physics.SUBSTANCE: laser optic head comprises an outer fixed body (1) and an inner movable body (3) with a nozzle (4). The body (3) is moved by means of a rack (6) mounted on the inner movable body (3) and a pinion shaft (5) mounted on the mechanism bracket (16). The mechanism (16) is fixed to the outer fixed body (1) and is connected to an electric drive. In the lower part of the outer fixed body (1), a capacitive sensor (8) is installed to set and control the size between the nozzle cut and the workpiece (9). At the nozzle outlet, there is a removable nozzle (7) with a narrowing-expanding channel at the outlet. For modes of cutting, welding, punching the holes, a removable nozzle (7) is used, which has a diameter in a narrow section of 0.2±0.02 mm and an expansion angle of 30°. For the mode of cutting metal of 20 mm to 40 mm, a removable nozzle (7) is used which has a diameter in a narrow section of 0.5±0.02 mm and an expansion angle of 15°.EFFECT: increased accuracy of processing, economy and versatility of the head.3 cl, 9 dwg

ethod of application of wear-resistant coating on bandage shelter of shoulder of turbomashes from nickel alloys // 2641210
FIELD: machine engineering.SUBSTANCE: shroud of the turbine blade is made. Put on the prepared to surfacing contact surface banding shelf wear-resistant coating and remove any excess coating referred to obtain the desired size bandage shelves. The bandage shelf is made with an allowance compensating for its subsequent shrinkage when a wear-resistant coating is applied, and after surfacing of the above coating, the blade is annealed in a vacuum10-3-10-4mm Hg. at a temperature not exceeding 1050°C. While surfacing wear-resistant coating on the contact surface banding shelves carry out in one pass without breaking the minimum arc current of 30-40 A. Allowance banding shelves exceeds its subsequent shrinkage is not more than 5-10%.EFFECT: invention makes it possible to increase the reliability and service life of the turbine blades.2 cl, 5 dwg, 2 ex

Head for orbital welding // 2641208
FIELD: electricity.SUBSTANCE: head contains a basis with radial notch, replaceable centring bushing, faceplate, mounted on the basis with the possibility of rotation through the drive installed on basis, made of two coaxially installed next to each other gear wheels with radial notches and with ring gear on their generatrix, places on the basis welding torch with electrode and fitting for shielding gas supply, filler metal feed and head fixation mechanism on welded pipeline. In this case, the head is provided with a carriage mounted on the faceplate with the possibility of adjusting movement, and the rotational drive of the faceplate is made removable.EFFECT: use of the invention makes it possible to improve the quality of joint weld due to a more accurate adjustment of the head to the welded abut and to avoid deformation of the pipeline when the head is fixed to it.3 dwg
ethod of electric arc surfacing of wear-resistant coating on harox 400 steel // 2641200
FIELD: metallurgy.SUBSTANCE: method includes the electric arc surfacing of the wear-resistant coating on the harox 400 steel by fusion welding using EnDOtec DO*30, or EnDOtec DO*33, or SK A 70-G diameter 1.6 mm in the protective gas medium of the composition: Ar 82%, CO2 18%, welding current of 250-300 A, voltage on arc of 30-35 V and subsequent pulse-periodic electron-beam processing. Said treatment is carried out at pressure in vacuum chamber 1⋅10-2 Pa with induction 0.02-0.03 T, with beam diameter from 40 to 10 mm, pulse duration from 25 to 30 μs, and an energy density of 15-20 J/cm2.EFFECT: production of wear-resistant coatings on carbon and low alloy steels operating under abrasive wear conditions.4 cl, 4 dwg, 1 tbl, 6 ex

Bandeling machine and method of sawing up of metal pipe // 2640698
FIELD: machine engineering.SUBSTANCE: method includes using a band saw machine which comprises a stationary lower part 1 of the band saw with a band saw table 2 for laying and fixing the metal pipe 3 to be cut, movable with respect to the lower part 1 of the band saw, the upper part 4 of the band saw with the rotating saw band 5. The rotating saw band 5 by means of the feed movement 13 of the upper part 4 of the band saw, which is carried out with respect to the lower part 1 of the band saw, is cut into the metal pipe 3 and passed through it for the purpose of cutting. The feed-motion is mainly in the direction opposite to the action of gravity.EFFECT: improving the quality of the cut and increasing the strength of the saw.7 cl, 3 dwg

Nickel-cobalt alloy // 2640695
FIELD: metallurgy.SUBSTANCE: invention relates to nickel-cobalt alloys. Ni-Co alloy contains, wt %: Fe from >0 to maximum 10, Co from >12 to <35, Cr from 13 to 23, Mo from 1 to 6, Nb + Ta from 4.7 to 5.7, Al from >0 to <3, Ti from >0 to <2, C from >0 to maximum 0.1, P from >0 to maximum 0.03, Mg from >0 to maximum 0.01, B from >0 to maximum 0.02, Zr from >0 to maximum 0.1, the rest is Ni, if necessary: V to 4, W from 4, possibly, impurity elements: Cu maximum 0.5, S maximum 0.015, Mn maximum 1.0, Si maximum 1.0, Ca maximum 0.01, N maximum 0.03, O maximum 0.02. Dissolution temperature γ' is 900-1030°C at 3 at. % ≤ Al + Ti ≤ 5.6 at % and 11.5 at % ≤ Co ≤ 35 at %, stable microstructure after dispersion hardening at 800°C for 500 h and the ratio of aluminium and titanium contents in at% Al/Ti ≥ 5.EFFECT: alloy is characterized by high mechanical properties, good formability and stable microstructure.13 cl, 7 dwg, 8 tbl
ethod of obtaining wear-resistant coating for cutting tool // 2640693
FIELD: metallurgy.SUBSTANCE: vacuum-plasma deposition of wear-resistant coating made of titanium nitride and niobium is carried out at their ratio, at %: titanium, 44.4; niobium, 55.6. Application of the coating is carried out by three cathodes arranged horizontally in one plane, the first and the second one are made of niobium and placed opposite to each other, and the third one is made of titanium and placed therebetween.EFFECT: increased working efficiency of the cutting tool.1 tbl
ethod of producing multi-layer coating for cutting tool // 2640691
FIELD: technological processes.SUBSTANCE: first, bottom layer of titanium nitride is applied. Further an intermediate layer of the nitride of the titanium and silicon compounds is applied at a ratio, wt %: titanium 97.9-98.5, silicon 1.5-2.1. Then, an upper layer of nitride of the titanium, silicon and niobium compound is applied at a ratio, wt %: titanium 88.6-93.0, silicon 1.0-1.4, niobium 6.0-10.0. The coating layers are applied horizontally in one plane by three cathodes, the first of which is made of a titanium and silicon alloy, the second one is made of a titanium and niobium composite and is placed opposite the first, and the third is made of titanium and is placed between them. The lower layer is applied using a third cathode, the intermediate layer is applied using first and third cathodes, and the upper layer is applied using all three cathodes.EFFECT: increased efficiency.1 tbl
ethod of producing multi-layer coating for cutting tool // 2640690
FIELD: metallurgy.SUBSTANCE: application of multi-layer coating is performed. First, a lower layer of titanium nitride is applied. Then, an intermediate layer of the titanium and aluminium nitride compound is applied at a ratio, wt %: titanium 83.5-89.5, aluminium 10.5-16.5. Then, the upper layer of the titanium, aluminium and zirconium nitride compound is applied at a ratio, wt %: titanium 73.0-81.0, aluminium 7.0-11.0, zirconium 12.0-16.0. Coating is applied by three cathodes arranged horizontally in one plane. The first cathode is made of titanium and aluminium alloy, the second cathode is made of titanium and opposed to the first cathode, while the third cathode is made of titanium and silicon alloy and arranged between the first and the second cathodes. The lower layer is applied using the third cathode, the intermediate layer - using the first and the third cathodes, and the top layer - using all three cathodes.EFFECT: increasing the efficiency of the cutting tool.1 tbl

ethod of items electrical discharge machining with wire tool electrode // 2640689
FIELD: electricity.SUBSTANCE: invention relates to the electrical discharge machining (EDM) of the enhanced accuracy geometrically-complex items. The method comprises the item surface forming on-machine with the CNC by means of the movement of the wire TL with the correction of the TL angular tilt α of the wire TL by virtue of the displacement of the upper guide of the mentioned machine tool cramp when directing the TL feed into the working zone from the bottom up or of the displacement of the bottom guide of the machine tool cramp when directing the TL feed into the working zone from up to down towards the item lateral surface, which is under form formation, perpendicular to the TL moving direction by an amount C, mm: C=b⋅tg(α), where b - is the item thickness, mm; α - is the exactable tilt angle of the item lateral surface, which is under form formation, deg. After the EDM of the item with the male lateral surface one carries out the additional displacement of the mentioned upper or bottom guides of the machine tool cramp to the opposite direction towards the item male lateral surface perpendicular to the TL moving direction for the remachining of this lateral surface along the same trajectory by an amount C1, mm:C1=2⋅C.EFFECT: simultaneous obtaining of two items in the shape of the punch and matrix with the true-vertical lateral surfaces.2 dwg

Grinding wheel // 2640688
FIELD: technological processes.SUBSTANCE: discontinuous working surface of the grinding wheel has a regular profile, for example the thread profile. The working surface of the grinding wheel includes an even number of sections. Each of them is profiled with a pitch equal to the profile pitch of the grinding workpiece, with the profile threads remote next by one and with the forming surface between the remaining threads in the form of a straight line connecting the bases of the threads. The section profiles are offset relative to each other. The sections of the grinding wheel consist of two segments, the abrasive material of which has a different seediness. Large-grained segments produce preliminary grinding, and small-grained segments - the final grinding of the workpiece.EFFECT: improved quality and productivity of the thread grinding.3 dwg

ethod of hollow metal blank laser hardening // 2640516
FIELD: metallurgy.SUBSTANCE: by means of local remelting, mechanical and chemical treatment, the blank of required dimensions is prepared in the range (the length×radius×thickness) from 100×10×2 mm up to 1000×1000×12 from pearlite, bainite or martensite hardening steels of 30XHCA, 35XHCA grades and etc. The blank is fixed in a rotator. The blank local area is remelted along the perimeter or along the blank over the entire wall thickness. The remelting modes are set depending on desired depth of the layer to be strengthened, the thickness of the blank and desired microstructure. The main parameters of the local remelting modes are the linear or angular velocity of the remelting and the power of the laser radiation. The processing is carried out with laser beam movement rate at of 15-40 mm/s, the laser beam power is 1-15 kW. After local remelting, time is maintained for natural cooling of the blank or forced cooling by water or air flow is used.EFFECT: increased strength and rigidity of the blank.5 cl, 2 dwg
ethod of strengthening blade surface of part // 2640515
FIELD: technological processes.SUBSTANCE: first sintered tungsten-cobalt alloy and then the reinforcing charge are applied by electro spark alloying to the rear part of the blade. The charge is heated with high-frequency currents, and the hardened reinforcing layer is deformed in the forming die while simultaneous drawing off the blade. As a reinforcing charge, a charge is used containing, wt %: boron carbide 72-82, silicocalcium 5-9, flux P-0.66 - the rest. It is applied with a layer of 0.8-2.5 mm. When the reinforcing layer is deformed, it is pressed into the blade surface to a depth equal to its thickness, after which the part is held at a temperature of 450-600°C, for 2 to 5 hours, and then cooled in air.EFFECT: increasing the wear resistance of the blade surface of the part along the wear contour.2 dwg, 1 tbl
ethod for repairing dents in vessels // 2640512
FIELD: machine engineering.SUBSTANCE: method of repairing dents in a vessel body comprises producing a patch with size and shape corresponding to the damaged portion, placing the patch on the portion under repair and welding the patch by the main weld along the perimeter to the vessel. The patch is placed in the dent, concentric to the outer surface of the body, beyond the radius transition from the vessel body to the dent at a distance equal to the thickness of patch from its inner surface to radius transition, and a bevel is made at the edge of the patch at an angle of 55±5° to the plane of the dent along the contour of the patch. At the point of transition from the main seam to the radius on the dent, an additional weld seam is applied and smooth transition from the seam to the radius of the dent is made by machining.EFFECT: simplification of the method for repair and improvement of strength of the repair joint of the vessel body wall with the dent.5 dwg

Industrial equipment working on principle "roll-to-roll" for implementation of mutually agreed continuous and discontinuous stages of treatment // 2640502
FIELD: technological processes.SUBSTANCE: first drive unit is designed to move the strip base in the feeding direction (X). The strip base moves through at least two treatment zones (110, 120, 130) in such a way that different areas of the strip base can be processed simultaneously. At least two treatment zones include the first treatment zone (110, 120) for the discontinuous process and the second treatment zone for the continuous process using a solder reflow processing plant. The soldering plant (130) contains at least one heat source (W) and the second drive unit to move this heat source relative to the first treatment zone along the strip base. The second drive unit is made with the possibility of moving the heat source (W) relative to the first treatment zone (110, 120) along the strip base (101) in the direction opposite to the feed (X) of the strip material (101), even if the first drive unit remains stationary.EFFECT: process improvement.15 cl, 5 dwg

Cutting plate // 2640483
FIELD: machine engineering.SUBSTANCE: cutting plate has a hard-alloy base with a wear-resistant coating and comprises an upper working surface and an opposing lower base surface, between which a peripheral side surface is located. At least one fixing plate through hole passes between the upper working and lower base surfaces. Each cutting edge has front and rear surfaces and successive sections of the main and auxiliary cutting edges with formation of angular cutting edges on the vertex of the cutting edges. The main side surfaces are inclined at different angles to the lower base surface and one relative to the other and have different width. In the cutting plate cross-section located in a plane passing through the axis of the fixing hole perpendicular to the section of the main cutting edge, the vertex of the fixing hole elevation is located below the portion of the main cutting edge. The ranges of cutting plate angles selection are provided.EFFECT: increased mechanical strength of cutting wedge and optimal conditions of chip flow in the zone of the fixing holes.11 cl, 5 dwg
ethod of preparing butts of tubular blank for laser welding // 2640119
FIELD: technological processes.SUBSTANCE: method for preparation of butts of tubular blanks for laser welding includes sheet edge preparation, assembly of a tubular blank, placement between the edges of the filler metal material as an insert. The groove is configured on the basis of Y-shaped grooving with lower bevelled edges. The insert is formed by pressing a metal powder which is filled into the gap between the edges during the tubular blank reduction.EFFECT: expansion of the arsenal of means ensuring the effective formation of a layer of alloying metal, located in the joint of the edges of the tubular blank and intended for use in laser welding technologies.3 dwg

Laser plasmotron for deposition of composite diamond coatings // 2640114
FIELD: electricity.SUBSTANCE: plasmotron contains a continuous CO2-laser, input block for forming the working gas mixture Ar/CH4/H2, a focusing lens mounted in said block in the path of laser radiation, a gas nozzle, and a reaction chamber. The reaction chamber has a node for introducing nano-/microfunctional particles in the form of gas-dust jet. The mentioned node is installed with the ability to move along the surface of the reaction chamber in laser plasma flow and with the possibility of supplying a gas-dust jet across the aforementioned flow in the region of laser radiation focus or below mentioned focus area in the direction of flow of laser plasma. As a result of particles input node ability to move along the surface of the reaction chamber of plasmotron, it is possible to clean and activate the surface of particles, the partial ablation (evaporation) of particles with a decrease in their average size, full evaporation of particles up to atomic condition.EFFECT: improving the functional characteristics of conventional diamond coatings, forming a relatively thick coating, increasing their deposition rate.1 dwg

ethod of welding longitudinal pipes welds // 2640106
FIELD: technological processes.SUBSTANCE: after joining the edges of pipe billet, the tack weld is made by arc welding. Main working weld is applied with the melting of the tack weld by laser or laser-arc welding. Then, inner and outer facing welds are performed by arc welding. Before the main working weld is made, the pipe billet is lifted to a fixed position by means of a drive mechanism connected to the control unit, on the input value of which the value of the angle of pipe billet inclination is entered. By means of driving support rollers, arranged to position and rotate the pipe billet by 360°, the joint of the edges of pipe billet is set to the position for 12 hours. Main working seam is made on the rise. Then pipe billets are lowered and either external face weld on the descent, without changing the position of joints of the edges of pipe billet, or inner face weld on the downhill is made, tentatively setting the joints of edges of pipe billet at 6 o'clock position.EFFECT: increase of reliability of welded seam.2 dwg
ethod of hybrid laser-arc welding // 2640105
FIELD: technological processes.SUBSTANCE: forming the weld pool by at the same time an electric arc and a laser beam by melting the metal of the filler material in a protective medium consisting of inert and active components. Argon is used as an inert component. The filler material is used in the form of two consumable wires with diameter up to 1.6 mm, which, together with a protective medium, are supplied from a single nozzle. Filling of the outer part of the cutting of edges is carried out by simultaneously melting the wires of a predetermined volume with the formation of an outer roller.EFFECT: invention makes it possible to increase the productivity of the laser-hybrid welding process, reduce the defects in the formed weld, and improve its mechanical properties.2 cl, 1 dwg

Burner for gas-shielded welding // 2640103
FIELD: electricity.SUBSTANCE: burner contains a gas and current conducting hose, at the end of which there is an orifice with a removable current conducting tip, that has a movable head and rest pin. The head is made in the form of a clamp with a worm screw and a die-fixed half loop, into which the rest pin is inserted. The head has a depth equal to the diameter of the rest pin. The working end of the rest pin is made in the form of a cone or stick, or a ball. The back end of the rest pin is bent back by 90° to prevent the pin from falling out of the clamp.EFFECT: quality of the welded joint is improved.10 dwg
ethod of arc two-electrode welding by coated electrodes // 2639748
FIELD: electricity.SUBSTANCE: place the electrodes in separate electrode holders, alternately melt the electrodes by cutting off the arc on one of them and maintaining it on the other. And the welding arc is forcibly disconnected by turning off the current in the welding circuit of the electrode. Before welding, the melting time of the coated part of the electrodes is determined, depending on the arc current in single-electrode welding. In this process, during the welding, the polarity of the product is periodically changed, keeping the polarity of each electrode. When the current value of the currents in the electrodes are chosen depending on the time of melting of the coated part of the electrodes as a function of arc current during single-electrode welding, determined before welding, and from the condition of the same time of melting of the coated part of the electrodes.EFFECT: invention makes it possible to provide welding without short-circuits of the arc gap and to improve the quality of the seam.7 cl, 4 dwg, 5 ex

ethod of separating metallic parts from materials with anisotropic properties by electrode-wire and device for its use // 2639747
FIELD: electricity.SUBSTANCE: tension of the electrode-wire and the supply of current pulses to it are carried out. When rewinding and tensioning the electrode-wire, the separable metal part is fed to the electrode-wire and the current pulses are applied to it. While reducing the frequency of current pulses, the rewinding of the electrode-wire is stopped, and the feed of the part towards the electrode-wire is carried out until the occurrence of a short circuit current, wherein the pulse current supply is disabled, the tension of the electrode-wire is reduced from the rewinding node to obtain its length from the phase involved in the part separation, not less than the greatest thickness of the separable metal part. After the tension of the electrode-wire is increased to the original value. The rewinding is performed with increasing its speed until the initial frequency rate of the current pulses is reached, and the separation continues until the next reduction in the frequency rate of the current pulses. The device contains a generator, mechanisms of rewinding and tensioning the electrode-wire, adapted to adjust the magnitude of the force rewinding, a tension roller of the electrode-wire, installed after the mechanism of tensioning the electrode-wire, a differential sensor of the frequency rate of the current pulses, a controller of the electrode-wire moving with an end switch and a control device of tensioning and rewinding the electrode-wire. The differential sensor of the frequency rate of the current pulses is connected through the end switch of the controller of the electrode-wire moving with the control device of tensioning and rewinding and with the device of tensioning and rewinding the electrode-wire.EFFECT: increased productivity, process stability.2 cl, 4 dwg, 1 ex

illing cutter and method of its application // 2639743
FIELD: machine engineering.SUBSTANCE: head has a base surface, the side and upper areas. The upper area limits central section and the periphery and contains upper teeth with cutting edges, each of which extends from the central portion in the direction of periphery and has an apex portion extending in axial direction. Each tooth defines a radial axis that forms an angle with respect to the reference radial line and crosses said line at the periphery. Each cutting edge has a front surface with a flat zone parallel to the radial axis and located at an angle with respect to the reference plane parallel to the axis of head rotation. The cutting edges have an undercut surface located below the flat zone at an angle relative to the reference plane parallel to the axis of head rotation. The methods for milling an article by means of the milling cutter comprising such cutting head are provided.EFFECT: provided better cutting quality along the Z axis in comparison with the heads, which cutting surfaces lie in the same plane in during plunge milling along Z axis, and efficient removal of material when moving the milling cutter.9 cl, 12 dwg

ethod of installing part and device for its implementation (versions) // 2639589
FIELD: technological processes.SUBSTANCE: part is placed with orientation on the plane and, at least, with one hole providing initial guaranteed radial clearances between the base surfaces of the part holes and internal expanding installation elements of the installation devices, which includes a collet of the expanding installation element with a slotted spring. By setting the ratio of the axial and radial rigidity the collet to be greater than or equal to one, the part installation process sequence is set as its pre-basing, pre-fixing, sending of the part towards the installation plane, final basing and final fixing of the part.EFFECT: accuracy and reliability of the part installation during the implementation of technological operations.3 cl, 9 dwg
ethod of arc mechanized two-electrode welding // 2639586
FIELD: electricity.SUBSTANCE: forced breakage of the welding arc on one of the electrodes used, which is melted, by turning off the current in the welding circuit of the electrode is executed. A nonconsumable electrode is used as a second electrode, while periodically changing the polarity of the products with the conservation of the polarity of each of the electrodes, connecting the product to the positive pole of the power source nonconsumable electrode connected to the negative pole of the power source. And when the product is connected to the negative pole of the power source, the melting electrode is connected to the positive pole of the source, the frequency of the polarity of the product is selected from the condition for the stability of repeated ignitions of the arc. The ratio of the duration of connection of the nonconsumable electrode to the negative pole of the power source to the cycle period is chosen in the range 0.3-0.5.EFFECT: possibility of independent control of the productivity of the melting of the electrode and base metal.5 dwg, 1 ex
ethod of restoration of part of aluminium or copper alloy // 2639440
FIELD: metallurgy.SUBSTANCE: on the surface to be restored, a steel reinforcing fabric mesh is placed, the part is driven into rotation with simultaneous transmission of welding current pulses, which is sufficient for heating of its surface by electrical contact method to ductile state of alloy. The steel woven mesh is pressed flush against the surface of the part to be restored by constantly moving the roller electrode along the axis of the part. A woven mesh is used whose cell size does not exceed the width of the roller electrode and ensures the extrusion of part material heated to the plastic state through the cells. The diameter of the mesh wire is selected depending on the required value of the increment of the size of the part to be restored in the process of reinforcement.EFFECT: increased life of restored parts.2 tbl
 
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