| 2525841 - 2525890 2525891 - 2525940 2525941 - 2525990 2525991 - 2526040 |
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Protection of parallel lines of power supply grid Invention is attributed to the field of electric engineering and can be used for protection of power supply grids. For protection of parallel lines of the power supply grid the first protective instrument (13a) is connected to the first line (11a) of the power supply grid for registration of measured values, which characterise working condition of the first line (11a). The first protective instrument (13a) via a communication connection (15) is connected to the second protective instrument (13b) located nearby. In order to increase reliability and selectivity during monitoring of parallel lines, a method is proposed, in which the second protective instrument (13b) is connected to the second line (11b) of the power supply grid stretching in parallel to the first line (11a). Both protective instruments (13a, 13b) exchange measured data recorded by them relative to their appropriate line (11a, 11b), and/or signals produced from these measured values. Each protective instrument (13a, 13b) is made as capable of performing a protective function for its appropriate line (11a, 11b) when performing the main logic (25) of protections. Each protective instrument for performance of its main logic (25) of protection involves measured values registered on its own line (11a), and also measured values and/or signals accepted from another protective instrument (13b). |
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Method of initiating lightning discharges Method of initiating lightning discharges comprises a remote definition of the pre-discharge state and coordinates of storm cells, as well as creation of a plasma conductive channel. At that the plasma conductive channel is created by synchronised blasting of series of artillery ammunition of plasma-optical action. The blasting points are located so that the ionised fields arising in the atmospheric air at triggering of the ammunition of plasma-optical action are arranged to overlap in the chain in the direction from the storm cell to the ground surface or to neighbouring storm cell. The overlapping of the ionised fields in the atmospheric air from triggering of the ammunition of plasma-optical action can be performed by changing the direction of flight of each subsequent ammunition in series in relation to the previous one. The overlapping of the ionised fields in the atmospheric air from triggering of the ammunition of plasma-optical action can also be performed by changing the triggering time of each subsequent ammunition in series in relation to the previous one. In addition, the overlapping of the ionised fields in the atmospheric air from triggering of the ammunition of plasma-optical action can be performed by simultaneous changing the direction of flight of each subsequent ammunition in series in relation to the previous one and the change in the triggering time of each subsequent ammunition in series in relation to the previous one. |
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Pyrotechnical source of electric current In the proposed pyrotechnical electric current source (PECS) thicknesses of anode, separator and cathode plates are made at the ratio of 1:(1.2-1.3):(1.4-1.5) at the following content of components in them, wt %: in the anode: zirconium 71-75, alloy or mixture of metal fluorides 20-26, asbestos 3-5; in the separator: zirconium 24-30, barium chromate 59-63, zirconium dioxide 6-10, asbestos 3-5; in the cathode: zirconium 7-9, copper oxide 29-33, alloy or mixture of metal fluorides 47-50, zirconium dioxide 7-10, asbestos 3-5. |
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Method for conducting thermal-radar tests on radioparent aircraft radomes According to the disclosed method, radio characteristics of an analysed sample of radioparent radomes are measured not only in the cold state of the radioparent radomes, after heating thereof, but also during temperature change (increase or reduction), which enables to measure radio characteristics of the analysed radioparent radome sample at extremely high temperatures and determine dynamic parameters of the process of heating the radioparent radome, i.e. the relationship between change in radio characteristics of the analysed radioparent radome sample and the value and the rate of change of temperature, which then enables to compensate for distortions of radio characteristics of radioparent radomes occurring during flight. |
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Device for realisation of cyclic movements Device comprises a setting unit, three summators, a sensor of output coordinate of a regulation object, delay units, a filter and additional delay units, connected to each other, as specified in the invention. All delay units are made with parameters determined in accordance with time coordinates of points of transition characteristic of the regulation object, and the delay time of the first delay unit also depends on the cycle time. |
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Invention relates to lighting devices in radio engineering, particularly an ultraviolet quartz lamp, and can be used in ultraviolet devices and process systems which require an ultraviolet radiation source, for example electronics, spectroscopy and medicine. Said problem is solved due to that a lamp, whose envelope is made of quartz glass whose outer surface is coated with a selectively transmitting coating, is filled with an inert gas with a measured amount of mercury, with two electrode assemblies consisting of a combustion electrode and a starting electrode, wherein the combustion and starting electrodes are made of repeatedly coiled spiral with a coating which reduces the electronic work function, the electrode assemblies are turned by 180° relative to each other, the inner surface of the envelope of the lamp is coated with a protective coating, and the outer surface of the envelope the lamp of the electrode portion is further coated with a reflecting coating of zirconium dioxide. |
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Invention refers to the sphere of electrical engineering. The proposed synchronous generator is designed for power characteristics of up to 1.5 kW/kg, higher efficiency factor of up to 95%, output voltage of 220/380 V and output frequency of f = 700 Hz. Separation of generating windings along the shaft in each section in the proposed generator makes it possible to increase the number of poles in the stator and the rotor. The proposed synchronous generator comprises a salient-pole stator with anchor winding and a rotor with poles that alternate in direction of the magnetic field. At the same time according to the first version of realisation the generator comprises N-sections arranged along the shaft, in each of which there is its section of the rotor and the stator with the anchor winding, each winding of the section covers all poles of the stator of its section, the rotor of each section is displaced relative to the adjacent one by 1/N period of alternation of the magnetic poles of the rotor. According to the second version of realisation, in the proposed synchronous generator the active sections of the anchor winding laid in slots between poles are made of steel plates, ends of which are connected by separate wires with ends of the plates of the adjacent slot in a mirror-like-symmetric manner relative to the pole between them. |
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Ignition system includes accumulator, positive terminal of which is connected to input contact of ignition switch and output contact of ignition switch is connected to input terminal of primary winding of ignition coil. Output terminal of primary winding of ignition coil forms the first common point with circuit breaker input terminal, the first capacitor lead and input terminal of ignition coil secondary winding, output terminal of circuit breaker forms the second common point with the second terminal of capacitor and negative terminal of accumulator. Output terminal of ignition coil secondary winding is connected to input terminal of distributor four output terminals of which are connected to output terminals of ignition plugs the output terminals of which are connected to the second common point. In parallel to the primary winding of ignition coil, inductance coil is connected having 1.1 to 2 times higher inductance and 1.1 to 2 times higher quality factor than inductance and quality factor of the primary winding of ignition coil. |
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Invention is related to the field of primary sources of power. The substance of the invention consists in the fact that a pneumatic drive is made in the form of a belt with pads onto legs and is divided into the first and second semicircular parts, between which there are elastic elements installed, besides, the first part is made in the form of n bipolar magnetic films arranged along the belt perimeter, and the second one - in the form of parallel connected windings. |
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Invention relates to multiview image encoding/decoding. The technical result is increasing efficiency of encoding multiview images in which there is localised mismatch of illumination and colour between cameras, a well as reducing the amount of code. The invention provides, when dividing an encoded and decoded frame and encoding/decoding each region, generation of a prediction image not only for the processed region, but for already encoded/decoded regions adjacent to the processed region. Prediction images are generated using the same prediction method. A correction parameter is then estimated for correcting mismatch of illumination and colour from the predicted images and the decoded images of adjacent regions. An estimated correction parameter can be found even at the decoding side. Encoding is therefore unnecessary. |
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Method of induction heating used in device comprising magnetically connected inductors Invention relates to the method of induction heating of a metal part, such as a sheet or a bar, at the same time the heating device comprises magnetically connected inductors. Each inductor receives power supply from its appropriate inverter, connected to a capacitor for creation of an oscillating circuit, which have approximately identical resonant frequency, at the same time each inverter is controlled by a control unit, in order to vary amplitude and phase of current passing via the appropriate inductor, the device additionally comprises facilities to determine the specified current, and also facilities to determine the actual temperature profile of the specified part. The method includes the following stages: the actual temperature profile is compared with the reference temperature profile, the reference profile of power density is calculated, which the heating device must supply to the specified part; the sought-for currents are calculated, which must be produced by inverters, so that currents of inductors achieve the appropriate sought-for values to send the reference power density profile to the part; currents are determined, which pass via inductors, in order to compare them with the sought-for values and to determine current variances subject to correction, and to transfer commands of correction depending on current deviations. |
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Aircraft power supply circuit comprising asynchronous machine Power supply circuit for supply of electric energy in an aircraft comprises a power supply generator made as capable of rotation by means of an aircraft motor, for supply of power electric equipment of an aircraft motor. At the same time the power supply generator comprises an asynchronous machine connected with an excitation device. The asynchronous machine comprises a rotor, made as capable of rotation by means of a motor, and a stator connected with the specified electric equipment. The excitation device is made as capable to cause passage of reactive current in the specified stator. |
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Invention relates to means for metrological support of receiver-indicators of GLONASS space navigation systems. The reference work station for precision calibration of delay of lettered frequency envelopes of GLONASS signal receivers consists of a test signal source, the calibrated receiver and a personal computer for processing calibration results. The test signal source used is synthesiser of an array of test frequencies that are phase-modulated by ±90° using range-finding code of a GLONASS pseudorandom sequence. Phase incursions are input into the personal computer, said phase incursions being successively measured by the carrier monitoring system of the calibrated receiver over an interval Δt. Phase incursions measured at the same intervals Δt of the hardware copy of the carrier monitoring system of the calibrated receiver are subtracted therefrom and said differences are divided by Δt to obtain phase response readings for frequencies. Delays directly caused by nonlinearity of the frequency response are calculated; group delay is measured; said delays are summed to obtain spectral density of the delays, or partial delays, which are averaged with the spectrum of the pseudorandom sequence of the range-finding code, successively shifting the centre frequency of the spectrum to the closest lettered frequency. |
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System and method of communication via amplitude modulation of power supply lines Application: in the field of electrical engineering. The electric system implements amplitude modulation of supply voltage for transfer of information along power supply lines 230 V. The system comprises a modulation unit, connected to a demodulation unit via a power supply line, at the same time the demodulation unit is connected to a control unit connected to an actuating unit. |
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Device for neutralisation of electrostatic charge at pipe inner surface Invention relates to production and transportation of oil. Invention aims to increasing reliability and efficiency of electrostatic charges by placing discharge electrode in neutralisation chamber and increasing the area of contact with fluid flow. Proposed device comprises discharge electrode to be mounted at pipeline with the help of flange joint. In compliance with this invention, pipe inner surface is lined with polyethylene. Bolts joints of the flanges are isolated by polyethylene sleeves. Discharge electrode composed by toothed ring is arranged between flanges and connected via drain cable secured to said ring with grounding device. |
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Process device for treatment of hollow cold cathode in gas discharge Process device for treatment of a hollow cold cathode in a gas discharge comprising a hollow cold cathode, an anode, located coaxially inside the cathode and equidistant from its surface, a glass vacuum-tight shell, in which the anode is made composite, the working part of the anode contacting with the gas discharge, is connected with its outer part, electrically contacting with the outer source of voltage or current, by means of a detachable joint, is made of the same material as the working surface of the cathode, treated with at least the same class of purity as the cathode, at the side of the inlet into the cathode is partially shielded by a dielectric located coaxially outside the anode. The non-shielded working part of the anode is located inside the cavity of the cathode and limited with maximum length not exceeding the length of the cathode. The treated cathode is fixed in the holder, which is electrically connected with a shunt to the cathode, besides, the shunt is in a vacuum tight manner mounted into a glass shell of the process device. |
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Invention relates to heat engineering. Pressure chamber 4 comprises cylindrical housing 3 with bottom 2, cylindrical shell 8 and grate 6. Cylindrical shell 8 is arranged coaxially with housing 3 to divide it into central discharge channel 7 and lateral feed channel 1. Grate 6 is arranged in central discharge channel 7. Porosity factor of grate 6 corresponds to the range of 0.05-0.7.Relationships are fine for chamber 4 which allow, first, for interrelation between maximum radius of the grate perforated part, pressure chamber height, cylindrical shell outer radius, pressure chamber inlet height and housing inner radius. Second, interrelation between pressure chamber height, cylindrical shell outer radius, pressure chamber height and housing inner radius. Third, interrelation between pressure chamber inlet height, housing inner radius, inner and outer radii of cylindrical shell 8. Fourth, interrelation between pressure chamber height and that of its inlet. Fifth, interrelation between pressure chamber inlet height, housing inner radius and outer radius of cylindrical shell 8. Invention proposes the relationship for selection of pressure chamber flow section. |
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Clothes for rescuers operating under x-radiation and low temperature conditions Clothes for rescuers operating under the conditions of objects flying and falling down during a facility collapse consist of a jacket for protection against mechanical impacts, a bib overall, a vest and a rescuer headpiece. The protective jacket has a central flare zipper fastener covered with a snapped wind-protection flapper, side and vertical zipped slash pockets, a volume patch pocket for a portable radio set and a slash zipped pocket on the shoulder yoke to the left and to the right accordingly. The detachable thermal insulation buttoned on top of the bib overall has a zipper fastener, a coupling link with a string along the waist line, knitted ribs and straps while the vest is of one-piece design with a knitted fastener fixation and a reflective strip along the bottom; the headpiece is of Cromwell ER1 type, made of thermoplastic resistant to high temperatures with the visor and the goggles made of polycarbonate; the protective jacket has a protective shell consisting of a textile lining bonded to protective shells; resilient framework posts are attached to the textile lining by means of belt fixtures while the protective shells are attached to the resilient framework posts. |
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Controlling power outage and faulty state of electrical power system When executing an intelligent application associated with power outage, event messages are received, said messages indicating events associated with different devices in an electrical power system. The intelligent application associated with power outage determines the state of different devices based on said event messages. Based on the event messages, the intelligent application associated with power outage can determine and confirm the state of the power outage associated with a certain device. An intelligent application associated with a fault receives synchrophasor data for each phase in a multiphase electrical power system. The synchrophasor includes information on the value of the phasor vector and the angle of the phasor vector for each phase. |
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Dispensing chamber is limited from outside with body and bottom (3), and interconnects by itself side supply channels (1) and central discharge channel (7) through clearances between bottom (3) and end-face parts of inner walls (2). The body is shaped by two external walls (5) and bottom (3). System of plates (6) shaping channels (4) for passing the working medium is installed in the cross section of central discharge channel (7) parallel to inner walls (2) with a clearance with respect to each other. Side supply channels (1) are divided from central discharge channel (7) by inner walls (2) oriented along outer walls (5). Outer (5) and inner (2) walls, bottom (3) and system of plates (6) are made in the form of flat plates installed vertically. The porosity coefficient of system of plates (6) corresponds to a range of 0.3 to 0.8. Given for the dispensing chamber are the relations taking into account the interrelations of a height of the dispensing chamber, a height of entrance into it, semi-width of the body, semi-width of the outer and inner portions of the central discharge channel. Given is the relation for selecting dimensions of the dispensing chamber flowpath, taking into account the average velocities of the working medium in the channel of system of plates (4) and of system of plates (6) as a whole, a height of the dispensing chamber and a height of entrance into it, semi-width of the outer portion of central discharge channel (7), semi-width of the body, number of channels (4) in system of plates (6), a width of channel (4) of system of plates (6), a current semi-width of system of plates (6) and semi-width of a perforated part of system of plates (6). |
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Shielding of high-voltage cables Invention relates to shielding of high-voltage cable systems. A magnetically shielded cable layout is proposed, comprising at least two AC cables (201-203) comprising a spaced area (210-212) between two sections (213, 214) of parallel cables brought together, besides, such spaced area (210-212) serially includes an opening area, a widely spaced area and a closing area, and a system (1) of electromagnetic field shielding (EMF), laid on top of the above at least two AC cables (201-203), besides, the specified system of EMF shielding (1) comprises a conductor (2, 3, 11, 12), having two branches (2, 3), forming a middle section (4, 5) and end sections (7-10), besides, the width of the middle section is equal to the distance between AC cables in the widely spaced section (210), or is more than this distance, and width at the ends of end sections (7-10) is more than the distance between AC cables on the sections brought together, and less than the distance between AC cables in the widely spaced section, at the same time the specified conductor (2, 3, 11, 12) contains an internal electric tract (2a, 3a) and an external electric tract (2e, 3e), connected to each other (11, 12) at appropriate longitudinal ends. |
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Invention relates to transport and can be used for evaluation fresh air mass Ma entering combustion chamber of engine cylinder. According to the invention, during engine cycle the evaluation (128) of total mass Mtot, of gas contained in combustion chamber is performed at the end of fresh air inflow, the evaluation (120, 124) of mass of burnt gases contained in combustion chamber is performed at the end of burnt gas outflow, and the evaluation (128) of fresh air mass Ma is performed from difference between evaluated total mass Mtot and burnt gas mass Mb. |
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Power conversion system comprises a power converter, using multiple branches to convert inlet electric power and discharge capacities into multiple phases. Each branch comprises upper and lower arms; a controller 30 that controls the upper and lower arm of each branch, in order to control pulse current passing via the branch. The controller 30 calculates a command of duration of connection for each branch in one period of control for each phase and for the first and second branches from multiple branches, provided for one determined phase, changes the phase of the calculated command of connection duration, so that the time period, when the positive pulse current flows via the first branch, and the time period, when the negative pulse current flows through the second branch, cover each other in one control period. |
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Three-position drive for distribution device Invention relates to a distribution device. The drive comprises: a driving shaft of an opening switch, the first master gear, axially connected with it, the first slave gear engaged with the first master gear, two driving discs, two rotary shafts, a driving shaft of an earthing switch, the second master gear, axially connected with the driving shaft of the earthing switch, the second slave gear engaged with the second master gear, a disc of a Geneva-type mechanism, having a pair of grooves, where the first driving roller or the second driving roller enter and exit; and the main shaft for switching of the opening switch or the earthing switch in accordance with rotation of the disc of the Geneva-type mechanism. |
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Invention relates to electronic engineering. The method of making a MIM cathode includes depositing, on a substrate, a lower electrode, an insulator, a top electrode and moulding the structure. A nano-needle structure is formed on the lower electrode in form of columns with density of 5·10 cm-2 by electrochemical deposition of a metal through a pattern made of polymer film with through-pores. |
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Invention relates to current-collecting devices, providing for transmission of electric DC, AC and pulse signals in wide range of frequencies and capacities between a source and a receiver, arranged in mutually rotating parts of an object, and may be used in electric engineering, control systems, radar location, for information coding. The device comprises a stator of a current-collecting device, made of dielectric rings with adhered contact surfaces from electroconducting material, along which current-collecting bars fixed on rotor rings slide. Rings of the stator and rotor form rotary electric connections. A set of rings with current-conducting wires is in a dust-moist-proof body filled with a lubricant dielectric liquid. Packets of rings are combined into groups by types of transmitted signals and placed into a set depending on their capacity and range of frequencies. |
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Method to produce sintered highly energy-intensive permanent magnet from alloy based on nd-fe-b Method includes manufacturing of an alloy based on Nd-Fe-B, its hydrogen embrittlement, coarse grinding and subsequent fine grinding in a vibration mill using toluene as a protective medium. Lubricants are added to toluene before grinding, such as dry powders of aluminium stearates, or copper, or zinc, or ethyl ethers of homological row of carbonic acids. After grinding of the powder to the average size of particles 2.5-3.5 mcm it is loaded in dry or moist condition into a container from molybdenum and/or graphite with charging density from 3.0 to 3.5 g/cm3, and texturing is carried out with a pulse magnetic field with subsequent vacuum sintering of powders along with slow heating to temperature of not more than 500°C. |
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Invention is related to thermoelectric energy transformation. The invention concept is as follows: a thermoelectric device (1) comprises at least one through channel (8) with the first bearing layer (3) and at least one second through channel with the second bearing layer (4). Between the first bearing layer (3) and the second bearing layer (4) there is an intermediate space (5). Several semiconducting p-type and n-type elements (7) alloyed with an admixture are arranged in the intermediate space (5) and electrically connected to each other. Relative first thermal expansion of the first bearing layer and relative second expansion of the second bearing layer under conditions of operation are same for the device (1) in the system of exhaust of spent gas of a vehicle. The first bearing layer has expansion ratio from 2·10-6/K to 10.2·10-6/K, and the second bearing layer has expansion ratio from 12·10-6/K to 28.4·10-6/K. |
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Vacuum auxiliary working member Invention relates to auxiliary working members of dry vacuum and wet draft cleanup systems. Proposed working member comprises nozzle casing, suction nozzle composed by nozzle casing, nozzle casing opening adapted for connection with suction source. Suction source is spaced from nozzle casing to generate working airflow from suction nozzle via nozzle casing. Electrical element is arranged at nozzle casing and comprises at least one of the following elements. LED to emit light in UV band for illumination of spots. Said LED is arranged at suction nozzle to illuminate the spots on surface to be cleaned. It includes ozone generator and ion generator. Power generator is mounted at nozzle casing and electrically connected with one electrical element. Turbine located in working airflow is driven by air. Said airflow flows through nozzle casing to produce mechanical power to be converted into electrical power for at least one electrical element. |
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Method of ladle spheroidising modification of high-strength cast irons Invention can be used in machine building and automotive industry for productions of casts of high-strength cast iron with spherical and vermicular shape of graphite. Spheroidising modifier as ferromagnesium silicon foundry alloy is placed at ladle bottom rear, opposite the tip, so that coverage of ladle bottom does not exceed the radius of bottom circle. Then, ladle is filled with iron melt for 30-60 s. Note here that at teeming, iron melt jet is fed closer to ladle tip. |
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Drill head with axial oscillations Invention relates to machine building and may be used in machining materials by drill head with axial oscillation generator. This head comprises a chuck to couple the head with motor that has lengthwise axis aligned with that of said motor, holder, elastostrained holder suspension means and means to direct the holder in said chuck in its axis. Head chuck is equipped with controlled generator of reciprocation along the chuck lengthwise axis fitted between the holder and the chuck. Holder and generator are connected by lengthwise connector to damp impacts at holder and to transmit reciprocation. |
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Formation of microstructure of eutectic al-si alloy Alloy is heated to temperature 5-7°C higher than that of alloy eutectic equilibrium. Said alloy are held at said temperature for 120-100 min. Then cooling is performed with furnace to 420-430°C at the r ate of 0.01-0.03 degree/s and cooling in water to the room temperature. |
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Stabilisation of mechanical parameters of parts from hard alloys Invention relates to metallurgy, mainly, to modification of parts made of hard alloys used for cold and hot metal and metal alloy forming, for example, cutting. Hard alloy article is irradiated by fast electrons at fluencies lower than 1·1012 el/cm2, while stabilising annealing is performed at 200-350°C. |
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Invention relates to metallurgy, particularly, to steels for production of mainline pipes. Said steel contains the following substances, in wt %: carbon 0.11- less than 0.15, silicon - 0.40- less than 0.50, manganese - 1.30-1.60, chromium - over 0.30, nickel - 0.06-0.20, copper - not over 0.30, aluminium - no over 0.05, titanium - not over 0.03, nitrogen - not over 0.008, sulphur - not over 0.040, phosphorus - 0.015-0.030, iron making the rest. This steel features ferrite-perlite structure, temporary breaking strength σB not over 530 N/mm2, impact viscosity KCU-40 not over 120 J/cm2. |
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Invention relates to recovery of blast-furnace and coke production gases. Method comprises separation of coke oven gas from coal carbonisation into hydrogen and residual flow gas containing hydrocarbons. Hydrogen separated from coke oven gas is added is added to synthesis gas flow rich in carbon monoxide produced from blast-furnace top smoke. Residual gas flow containing hydrocarbons is fed into blast-furnace process as a fuel. |
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Invention relates to precision copper-based alloys for production of micro- and nano-wires, thin films and coatings with negative temperature coefficient of resistance (TCR). Proposed composition contains the following substances, in wt %: manganese - 18.0-22.0; nickel - 18.0-25.0; silicon - 2.0-4.0; boron- 1.5-4.0; germanium - 2.0-5.0; gallium - 3.0-6.0, copper making the rest. |
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Method of processing phosphogypsum Invention relates to the technology of processing phosphogypsum - wastes of enterprises, producing phosphoric fertilisers. The method includes opening phosphogypsum with sulphuric acid, further extraction of rare-earth elements (REE) and processing purified phosphogypsum with calcium oxide. In the course of opening with one solution of sulphuric acid successively processed are 1-3 lots of phosphogypsum with heating, the water phase is separated by filtration, the sediment is washed with water, apatite is added to the filtrate in a ratio of S:L=1:10-20, with the second heating at a temperature of 50-70°C and mixing for 1-2 hours with neutralisation with sulphuric acid to a concentration not lower than 0.1 mol/l. After that the sediment of the secondary phosphogypsum is separated by filtration and supplied to the beginning of the process. Calcium oxide or hydroxide and then ammonium hydroxide or carbonate are successively introduced into the filtrate until pH=2-3.5, the REE sediment is separated by filtration, and calcium hydroxide or oxide is introduced into the filtrate until pH=7-8, the sediment of feed tricalcium phosphate is separated by filtration, washed with water and discharged from the process. |
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Nickel-chromium-molybdenum-based nanocomposite Nickel-based composite for heterophase evaporation of coats contains the following elements, in wt %: chromium - 10.0-20.0, molybdenum - 25.0-45.0, silicon - 6.0-9.0, aluminium - 7.5-10.0, zinc - 1.5-2.0, TiC - 2.0-4.0, nickel making the rest. Nanocomposite is obtained at introduction of Al and Zn as base metal at the ratio of components making 5:1, respectively, while TiC as nanoparticles sized to 60-80 nm. |
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Invention relates to metallurgy. Rolled stock coiling head comprises central body 11 equipped with central cylinder 12, at least one feed pipe 45 secured to central body 11 by clamps 48 and at least one circular guide 40 arranged at periphery of cylindrical element 37 secured at central body 11. Said circular guide 40 consists of multiple elementary segments 41 arranged close to each other to make closed guide channel. Note here that said circular guide feature a permanent radius of curvature in angular interval of at least 180°. |
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Milling tool with continuous fluid feed device Set of invention relates to machine building and can be used at milling with continuous coolant or lubricant feed. Proposed tool comprises shaft section with first channel extending from shaft section first end and head section aligned with shaft section extending radially outward from shaft section and including two lateral surfaces and outer peripheral edge located there between. Outer peripheral edge comprises at least one recess for fastening of at least one insert. This tool comprises at least one second channel extending at a distance between lateral surfaces from first channel to at least one proximal groove. First channel comprises different-diameter first section and second sections. Second section has circular rib and circular groove at transition between first and second sections. Said rib has at least one bore extending between second section and circular groove. Invention covers the versions of milling tool design. |
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Device for extraction of elements from oxide ores Proposed device comprises plasmatron, feed channel, reaction channel, filter and powder collection vessel. Besides, this device comprises vessel to load the stock composed of the mix of coal nanopowders oxide ore. Nozzle serves to adjust stock feed rate from vessel into reaction channel arranged in feed channel. It has heat carrier channel surrounding said reaction channel and communicated with process channel including heat exchanger, thermal turbine and electric generator. Said process circuit can recover heat power as the difference between power released at carbon oxidation and power required for decomposition of oxides to electric power. Reaction channel expands in diameter from stock inlet and stock ignition by plasmatron to zone of the formation of oxide decomposition and carbon oxidation gases. Multisection filter is arranged downstream of said reaction channel. |
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Copper-based nanostructured electric contact composite and method of its production Invention relates to powder metallurgy, particularly, to production of copper-based composites intended for fabrication of arcing contacts. Copper-based composite comprises titanium dioxide (TiO2) nanopowder as arc-suppressing additive at the following ratio of components, wt %: TiO2 - 1-3; Cu making the rest. Proposed method comprises mixing by ultrasound of, first, titanium dioxide nanopowder with ethyl alcohol and, then, obtained mix is mixed with copper powder. Now, compaction, sintering, second compaction and annealing are performed. |
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Refractory nickel-based alloy for casting gas turbine working blades Proposed alloy comprises the following components in wt %: carbon 0.001-0.12, chromium 8.8-9.2, cobalt 4.8-5.2, tungsten 6.1-6.5, molybdenum 0.15-0.3, aluminium 3.7-3.9, tantalum 3.9-4.1, rhenium 3.4-3.6, boron 0.0003-0.01, niobium 0.10-0.20, cerium 0.002-0.012, yttrium 0.002-0.012, titanium 2.9-3.1, hafnium 0.15-0.25, manganese 0.002-0.12, nickel making the rest. This alloy contains cerium and yttrium at equal amounts while titanium-to-aluminium content is higher than 0.75. |
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Proposed device comprises at least one cowl arranged to displace between closed and open positions and driven by at least one motor-controlled actuator. Every motor is connected to two separate power source. Note here that every motor represents a two-winding motor, every winding being connected to power supply other than that of another winding. |
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Plugging material with controlled kinetics of expansion Invention relates to the oil and gas industry and in particular to the field of obtaining special cements, namely to plugging materials for consolidation of oil and gas wells. A plugging material with controlled kinetics of expansion includes plugging Portland cement, an expanding component, additionally contains hydrophobisator sodium oleate or potassium oleate, with the said hydrophobisator being preliminarily mixed with the expanding component with the following component ratio, wt %: plugging Portland cement - 85-95, expanding component - 4.975-14.5, sodium oleate or potassium oleate - 0.025-0.5. |
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Composition for hydrophobisation of porous building materials Composition for hydrophobisation of porous building materials contains glacial acetic acid, synthetic rubber, dissolved in an organic solvent, and as synthetic rubber used is silicone low-molecular rubber of cold vulcanisation, and as the organic solvent - nefras (petroleum solvent), with the following component ratio, wt %: the said rubber 2-4, glacial acetic acid 0.2-0.7, nefras - the remaining part. |
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Invention relates to metallurgy of nonferrous metals and can be used for production of crucibles lined by ceramics for casting of foundry alloys containing vanadium and/or molybdenum. Proposed method comprises forming the crucible from refractory mass prepared at mixing of 5-15%-aqueous solution of soda ash with slag, that is a by-product of aluminothermal process, at the rate of 0.07-0.15%-aqueous solution of soda ash per 1 kg of slag, curing, drying and cooling of crucible. Crucible is dried in curing at 100-150°C for 1.0-1.5 hours, thereafter drying temperature being increased to 600-800°C and curing being performed for 9.5-11 hours. Produced crucible features lining open porosity of about 38-40%, water absorption of about 13-18% and mechanical strength of about 3-10 MPa. |
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To protect downhole rotary pumps from clogging with mechanical impurities, this filter comprises case with filter element and seal arranged at said case to separate filter intake part from discharge part. Said seal is composed of "an umbrella" made up of a carcass of metal spokes with oil-resistant rubber stretched there between. Device is equipped with spring, retainer and charged storage battery, its capacity being designed for lowering to preset depth to keep said umbrella at closed position. |
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Method of doping alumooxide ceramics Method of doping alumooxide ceramics includes obtaining a slip blank, removal of a technological binding agent and burning. In accordance with the invention after removal of the technological binding agent the blank is soaked with a water solution of zirconyl nitrate ZrO(NO3)2×2H2O, after which it is heated with an increase of temperature to 400°C. Subsequent burning is carried out with even heating of the blank to a temperature of 1600-1650°C for 12 hours, with an exposure at the maximal temperature up to 1 hour and further even cooling of the blank to room temperature for 3-4 hours. |
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Proposed method comprises making the crucible from refractory mass, its curing, drying and cooling Refractory mass is prepared at mixing of aqueous solution of soda ash with slag, that is a by-product of aluminothermal process, containing vanadium and/or molybdenum, super plasticiser SP-1 and high-alumina cement Slag is mixed with plasticiser at the rate of 0.8-1.2 kg of plasticiser per 200 kg of slag Obtained mix is diluted with water at the rate of 1 dm3 per 14-15 kg of slag and mixed till complete damping of the mix Then, high-alumina cement is introduced in amount of 0.5-1.5 kg per 12-14 kg of slag and mixed to homogeneous mass Crucible is dried in curing at 100-150°C for 2±0.5 hours, thereafter drying temperature being increased to 650°C and curing being performed for 10±0.5 hours. |
Another patent 2540391.