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2537300 - 2537349 2537350 - 2537399 2537400 - 2537449 2537450 - 2537499 |
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Ozone decomposition catalyst and method for preparation thereof Invention relates to an ozone decomposition catalyst for aviation converters, made of corrugated aluminium foil with an aluminosilicate coating, which is impregnated with transition metal oxides with additives of noble metals or oxides thereof, wherein said aluminosilicate coating is formed via microplasma treatment of a substrate made of a valve metal. |
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Sensor for obtaining giant raman scattering spectra and method of making said sensor Invention relates to a method of making a sensor for obtaining giant Raman scattering spectra, which is a glass capillary whose inner wall is coated with silver nanoparticles. The silver nanoparticles are obtained and attached to the glass surface via reduction of silver ions with alkylamines. The glass capillaries are washed with a detergent solution for optical devices, distilled water while mixing with ultrasound, absolute ethanol and dried in air, placed in a teflon vessel with a reaction mixture of 1 mmol/l AgNO3 and 1 mmol/l alkylamine in ethanol; the reaction mixture is heated at 45-50°C for 40 min with intense agitation along the axis of the capillaries. After the reduction reaction, the capillaries are washed with ethanol and cleaned on the outside. |
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Method of tetraethoxysilane purification Invention relates to methods of purification of alkoxysilanes and deals with obtaining highly pure tetraethoxysilane. Claimed is a method of tetraethoxysilane purification, including the initial processing of a product to be purified with a 0.3-1.5% water ammonia solution, added with intensive mixing to tetraethoxysilane which must be purified in a volume ratio (4-6):1, further rectification of the preliminarily purified product and its purification by distillation without boiling at a rate of evaporation from the surface of 0.5-1.5 ml/cm2·hour. The technical result consists in the following: the method makes it possible to obtain a highly pure product with the content of limited metal admixtures at the level of 10-6 wt %, chlorine less than 10-3 wt % and suspended particles with the diameter of 0.3 mcm about 200 particles/cm3. |
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Mobile device for inhibition of highly explosive methane-air mixtures in mines (versions) Invention relates to the mining industry and can be used to prevent ignition and explosion of methane-air mixture. The mobile device to inhibit highly explosive methane-air mixture is proposed in two embodiments: mobile on trolley with unit of spray nozzles and knapsack embodiment for immediate protection of workers in the mine. The mobile device for inhibiting highly explosive methane-air mixture in the mines of the first embodiment comprises cylinders with inhibitor, methane sensor, an electronic pressure gauge, a power supply, a trolley on wheels. The device additionally comprises a control unit connected to the system of control and monitoring of the mine and receiving a signal from the sensors of methane and pressure gauges, and transmitting signal to the control valves, which are connected simultaneously with the control unit and cylinders with inhibitor. The control unit is connected to the unit of nozzles comprising two mutually isolated chambers for supplying the inhibitor. In the second embodiment, the mobile device to inhibit highly explosive methane-air mixture in the mines comprises cylinders, methane sensor, and pressure gauges. The device additionally comprises a control unit connected to the cylinders with inhibitor and simultaneously through the flexible connection to the control valve, with at least one spray nozzle to the rod. The control unit and the control valve consist of two isolated chambers for supplying inhibitor, and the control valve is provided with a switching key. |
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Method of obtaining porous glass materials Charge, based on siliceous rocks is prepared and a ratio SiO2/CaO is brought to 0.75-1.04. The charge is melted at a temperature of 1500-1550°C, with the further content of components, wt %: SiO2 - 40.1-47, CaO - 44.9-53.2, Al2O3 - 2-15, MgO - 0.8-4, Fe2O3 - 0.2-5, Na2O - 0.6-1.5, K2O - 0.6-1.5, TiO2 - 0.2-1.5, SO3 - 0.01-0.3. |
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Invention relates to the field of construction, in particular, to construction elements in the form of finished construction blocks for erection of bearing and barrier structures of buildings and facilities. A construction block has the shape of a rectangular parallelepiped and comprises three identical and parallel panels connected to each other. Each panel comprises two flat parts and a layer of filler between them. All panels have identical through holes of round shape, where connection parts of cylindrical shape are inserted. The middle panel is displaced relative to side panels so that in the middle of the construction block on its larger side face there is a long ledge, on its opposite side face there is a long groove, on the smallest side face there is a short ledge, and on the opposite side face there is a short groove. On one of largest side faces of the middle panel there are ledges in the form of a square prism, and on its opposite face there are grooves, which fully match the ledges by shape, size and location. Between them the panels are fixed with the help of glue or with the help of fastening elements. During assembly of a construction structure, ledges of adjacent construction blocks are matched with appropriate grooves, and ledges of adjacent middle panels are coupled with appropriate grooves, also at the angle of 90 degrees in the horizontal plane. By means of the specified matching and coupling the location of each construction block is self-aligned and fixed in all orthogonal planes, accuracy of assembly and stability of the construction structure to external impact is provided. The multi-layer structure of the construction block provides for its high strength under low own weight, filler layers of all panels create heat and sound insulation. |
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Invention relates to oil processing industry and can be used at processing of oil or heavy hydrocarbon compounds to obtain a volumetric carbon frame for composite materials. In compliance with the proposed method, a formwork is prepared, the cross section of which determines a profile of the carbon frame, and mass of a solid-state melting catalyst - blowing agent is formed inside the formwork by means of individual components having either a regular or irregular geometrical shape; besides, laying of the individual components is performed so that an inter-rib gap forms continuous inter-rib formwork channels along ribs and tops of the laid bodies. A raw mixture is prepared by addition to heavy hydrocarbon compounds of a cocatalyst consisting of a mixture of light hydrocarbons; the inter-rib formwork channels are filled inside the formwork in the body of the mass of the solid-state melting catalyst - blowing agent with the raw mixture; the formwork is fully placed into a melt of a catalytic mixture having the temperature of 200-300°C, and the formwork is exposed in the melt of the catalytic mixture till melting of the mass of the solid-state melting catalyst - blowing agent and formation of a volumetric carbon frame. Then, the formwork is removed together with the obtained volumetric carbon frame and the latter is cleaned from residues of the liquid melt of the catalytic mixture. As a melting catalyst - blowing agent, a mixture of metal chlorides is used, which has a melting temperature of 180-200°C. |
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Sandwich panel manufacturing method (versions) Manufacturing method of sandwich panels containing at least one layer of a warmth-keeping material, mainly foamed plastic and a reinforcing layer from glass fabric involves connection of the reinforcing layer and foamed plastic by means of a glued connection. Besides, there additionally used is at least one matrix form, the working surface of which is pre-treated with a releasing agent for resins; then, the working surface is filled with resin, mainly epoxy resin, with a layer of preferably 0.5-1.5 mm and left till it is dried; after that, an additional reinforcing layer in the form of a glass fibre matt layer and a reinforcing layer in the form of a glass fabric layer are laid in turns onto the resin layer; after that, the glass fibre matt and glass fabric layers are soaked with a self-expanding polyurethane adhesive with microspheres and the warmth-keeping material is laid onto the glass fabric layer; then, the layers being attached are pressed and dried, and mainly under pressure by means of a vacuum table; after complete drying of the layer the matrix form is removed. |
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Invention relates to the field of mining industry and can be used for registration and saving of basic parameters of explosion of methane dust air mix at propagation or damping of explosions in mines. The method comprises installation in pre-selected points (survey stakes) along all over the length of mines on the path of probable propagation of fronts of air shock wave and flame of "black box" devices which record the direction of progressing or damping of explosions and simultaneously register the magnitude of overpressure in the front of air shock wave and temperature of flame front, are protected from external mechanical impacts and save the registered information until their discovery irrespective of time of search and recovery works after an accident. The versions of the "black box" device for the method implementation are offered as well. |
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Method comprises an extraction of overburden rocks by longitudinal stripping cuts with placement on their bottom of a free strip, handling of overburdens from working face of the longitudinal stripping cut and their storage in an internal dump. The extraction of overburdens by longitudinal stripping cuts with placement on their bottom of a free strip, handling of overburdens from working face of the longitudinal stripping cut and their storage in an internal dump at the edge of these stripping cuts are performed within the extraction block. Meanwhile along the bottom edge of the internal dump of the extraction block an additional free strip is placed, which is used for storage of overburdens, with forming of internal dump. |
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Development method of diamond-ore deposits Method involves performance of hierarchically real structural deep differentiation of a massif, a deposit (or its section), thus, pointing out the following: different-scale and heterogeneous operational sections based on the most characteristic mining-and-geological peculiar features, including peculiar features of components of mine rocks, and within their limits - ore (mining), ore-porous and rock (overburden) horizons, in them - ore bodies or their parts, operating and rock units, in them - real heterogeneous excavation elements divided into thin and extremely thin layers presented with amenable, temporary non-amenable, non-amenable and low-grade diamond-containing ore, or with rocks; automated production of advance, current and operational express information using a complex method representing a combination of forecasting of probabilistic spatial distribution of diamonds in ore units and in their elements and further direct automated identification of availability, position, quality and quantity of diamonds in thin ore layers by means of an X-ray fluorescence method. With that, crystals of diamonds are automatically extracted from thin ore layers by means of annular hole drilling of each of the crystals separately, without any disturbance of their integrity, and separated from mini-massif of each developed thin layer. |
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Invention relates to nanocomposite compositions based on expandable thermoplastic polymers filled with graphene plates. Disclosed are nanocomposite compositions based on expandable thermoplastic polymers which comprise: a) a polymeric matrix produced by polymerisation of a base comprising one or more polymerisable monomers; b) 1-10 wt %, calculated with respect to the polymer (a), of a foaming agent embedded in the polymer matrix; c) 0.004-15 wt %, calculated with respect to the polymer (a), of an athermanous filler comprising nano-sized graphene plates with a thickness (perpendicular to the graphene sheet) not greater than 150 nm, an average dimension (length, width or diameter) not greater than 10 mcm and a surface area > 50 m2/g. |
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Method involves conducting a standard therapy, exposing to a magnetic field and doing a treadmill workout. The standard therapy involves following a stationary regimen, keeping a standard diet, administering Cytoflavin 10ml in normal saline 150ml, lipoic acid 25mg twice a day and Grandaxin 0.05 3 times a day. The treadmill workout involves as follows. The first workout: first two minutes at 1km/h, from 3rd to 15th minutes at 2km/h, from 16th to 17th minutes at 1km/h, from 18th to 30th minutes at 2km/h, from 31st to 32nd minute at 1km/h. The second work out: first two minutes at 1km/h, from 3rd to 15th minutes at 3km/h, from 16th to 17th minutes at 1km/h, from 18th to 30th minutes at 3km/h, from 31st to 32nd minute at 1km/h. From the 3rd to 10th work out: first two minutes at 3km/h, from 3rd to 30th minutes at 5km/h, from 31st to 32nd minute at 3km/h. The therapeutic course is 10 procedures. The patient is exposed to the magnetic field 30 minutes after the treadmill workout. That involves a transcranial bitemporal magnetic therapy by means of an headband adaptor of AMO-ATOS apparatus. On the first 3 procedures, the exposure is generated at frequency 5 Hz; on the 4-10th procedure - at frequency 10 Hz. The length of exposure is 10 minutes. The therapeutic course is 10 sessions. |
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Invention relates to sorption purification of sewage and drinking water. Purification of water, which has concentration of lead cations to 200 mg/l, is carried out by sorption with 95% glauconite concentrate, which is preliminarily subjected to acid treatment. Height of sorbent layer constitutes 0.5 m, linear flow velocity is from 0.38 to 1 m/h. purification is carried out for 20 hours. |
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Method of obtaining ketotetraoxanes Invention relates to novel method of obtaining previously undescribed ketotetraoxanes of general formula I: |
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Method for making and prescribing sphaelactone derivate and its composites Invention refers to micheliolide derivatives of formula |
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Method of producing 5-(chloromethyl)-5-(alkoxymethyl)-1,3-dioxanes Method includes alkylating 5,5-bis(chloromethyl)-1,3-dioxane with aliphatic alcohols in the presence of catamin AB as a catalyst for 4 hours, with the following ratio of components, wt %: 5,5-bis(chloromethyl)-1,3-dioxane 11; sodium hydroxide 2.4; catamin AB 0.15; dimethylsulphoxide 83; alcohol 3.45. The obtained compounds have a range of valuable properties and are widely used as corrosion inhibitors, plasticisers, surfactants, medicinal and biologically active preparations. |
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Energy system for service of rooms Invention relates to power industry and can be used in systems and methods for energy transfer in a room. A motor is arranged inside an internal container that is arranged in its turn inside an external container. The above motor has a possibility of generation of electricity to be used in rooms. Waste gases pass from the above motor through heat exchange tubes inside the external container in order to heat drinking water inside the above external container. Drinking water enters the above container through the lower part of the above container and is heated as it rises through the above external container in the direction to an outlet branch pipe near the upper part of the above external container. Hot drinking water is supplied through the upper part of the above external container to the room. Condensate from the above waste gases is collected and used as drinking water. Heat, vibration and acoustic energy from the above motor are collected by means of fluid medium in the internal container and transmitted to the external container. |
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Invention contains control system, two cylinders with distribution valves and opposite moving piston groups. Each piston group contains piston, stock and armature of the linear motor. The linear motor includes stator magnet, two magnetic cores and two magnetising coils. The piston groups are oriented such that their axes of symmetry are located at one geometrical line, and their movement is arranged opposite thus excluding vibrations due to oscillating movement. But character of pistons movement is affected also by inaccuracy of the piston groups manufacturing, nonuniformity of friction forces between friction surfaces, unpredictable movement of pump-compressor etc. To synchronise movement of the piston groups the control system monitors speeds of each piston group and compares them. If speeds of the piston groups are different, the control system switches the distribution valve, via which the work body is supplied to the header, to closed position of the cylinder in which the piston group speed is higher then speed of the opposite moving piston group in another cylinder. At the time moment ensuring simultaneous arrival of the piston groups of both cylinders in points of convergence or divergence the control system switches the distribution valve to opened position. |
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Control over ice exhaust gas recycling by timing valve fluid drive system System comprises gas timing valve fluid control gear, fluid flow control slide, hydraulic accumulator, timing valve drive piston and timing valve. This gas timing valve fluid control gear defines fuel amount, exhaust gas amount and engine timing valve closure moment in compliance with preset current ICE output. At ICE offgas exhaust stroke at time moment defined by gas timing valve fluid control gear, said slide forces working fluid from hydraulic accumulator to under-piston of timing valve drive. Therefore, working fluid pressure makes timing valve gear drive piston force timing valve engaged therewith to closed position. This causes the portion of exhaust gases to stay in ICE cylinder. Note that at the next air of fuel mix suction stroke, exhaust gases are mixed therein with sucked air or fuel mix. |
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Method of generation of the atmosphere air compressed in the compression cavities of the piston groups by free-piston power module with common external combustion chamber and by opposite movement of the piston groups, including two expansion machines with piston groups of the power module, external combustion chamber installed between the compressor cavities and combustion chamber, 2-way air distribution valve and control system; according to the invention at the time moment when air compressed in the compressor cavities of the piston groups enters the combustion chamber the control system sets the 2-way air distributing valve to position where access of the atmosphere air compressed in the compressor cavities of the piston groups to the external combustion chamber is closed, and channel of user provision with air compressed in the compressor cavities of the piston groups is opened. |
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Brush seal (versions) and turbomachine Group of inventions relates to brush seals keeping their operability in reverse flow conditions and designed to limit the transfer of fluid medium under pressure between the first and second chambers along a moving shaft. The opposite limiting plates serve to prevent bending of bristles on the moving shaft. Depending on the pressure drop between the chambers, the sliding brush seal is moved in the axial direction by spring-loading to the position with a rest against one of the opposite limiting plates thus preventing the bristles from bending to keep specified clearance with the sealed shaft. |
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Invention relates to method of removing fraction with high nitrogen content. Described is method of removing fraction with high hydrogen content from initial fraction, which contains mainly nitrogen and hydrocarbons, with initial fraction being separated by method of rectification into fraction with high nitrogen content and fraction with high methane content in order to obtain cold is evaporated and overheated under possibly maximal pressure with respect to initial fraction to be cooled. In accordance with invention still liquid or partially evaporated fraction with high methane content is supplied to circulation tank, liquid portion of fraction with high-methane content formed in circulation tank preferably in the process of natural circulation is completely evaporated, and head main product of circulation tank is overheated. |
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Blowing of main spent gas recirculation pipeline in gas turbine Invention refers to power industry. Method of main spent gas recirculation pipeline blowing in a gas turbine utilizes flow discharged from compressor, so that first part of discharged air is directed to main pipeline of spent gas recirculation for blowing, while second part of compressed air is fed via second main discharge pipeline to steam generator operated with by-product fuel. Additionally, invention describes gas turbine with main blowing pipeline as per invention. |
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Method comprises mounting the vertical supports in the form of plastic tubes, in which the openings are made, the wire is inserted, and the plastic tubes are filled with cement grout. The guide wires are mounted for fixing vine stalks, and the vertical supports are mounted in rows. The retainers are made from the wire ends in the openings of vertical supports for temporary fixing the guide wires or the cable. The openings are made with a pitch, two wire guides are temporarily fixed after planting vine in two retainers of the lower part of the vertical supports. The wires are pivotally fixed to the vine stalks, and they are oriented vertically upwards with subsequent transfer and temporary fixing in the next retainer of the vertical support of the lower wire. Such procedure is carried out to the level of formation of the vine crown with the vertical trunk. |
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Invention relates to metallurgy of precious metals and alloys used for manufacture of pieces of jewellery. Palladium-based alloy contains the following, wt %: palladium 50-95, nickel 3-5, silicone 0.5-2, copper 1-40, gold 1-30, indium 1-10, gallium 1-10, boron 0.01-1,0, at the total content of nickel and silicone of up to 5% in a stoichiometric ratio determining formation of Ni2Si intermetallide, or the alloy contains the following, wt %: palladium 50-85, nickel 11-13.5, aluminium 1.5-4, copper 1-40, gold 1-30, indium 1-10, gallium 1-10, boron 0.01-1,0, at the total content of nickel and aluminium of up to 15% in a stoichiometric ratio corresponding to Ni3Al, NiAl, and Ni2Al3 intermetallides. A method for obtaining alloys on the basis of palladium involves melting of alloys of the specified compositions and their heat treatment involving heating and exposure at temperature of formation of an oversaturated solid solution, tempering to the temperature of less than 100°C, ageing at the temperature of 300 to 800°C during 5 minutes to 24 hours and further cooling. |
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Method and structure for carrier straightening Invention relates to metal forming, particularly, to carrier straightening device. Carrier first part is supported to strain it by application of force to its second part. Prior to straining, at lest one measuring registrator is placed on vehicle first support part that includes at least one accelerometer to trace the displacement of said carrier first part at straining by displacement measuring registrator. |
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Beard shaving trimmer with automatic positioning of cutting head Invention relates to a mechanically driven bear shaving trimmer containing a cutting head with a cutting mechanism setting the shaving line and a comb forming the foothold; the said cutting head is installed with the possibility of turning on the handle with the cutting head turning axis, the shaving line and the comb foothold (11) are positioned essentially in a row or displaced with the possibility of automatic positioning of the said cutting head (2) tangentially relative to the face contour in the process of shaving. Ensuring beard shaving to the preset hair length. |
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Amorphous band winding device includes a winding drum with a cylindrical base with electromagnets uniformly distributed in a circumferential direction and with two side restricting discs on both end faces of the base. Coaxially to the drum there installed is an electric motor on the disc of which fixed on the electric motor shaft end face there installed are electromagnets and on the other side - a common bus for all the electromagnets. Constant magnets installed on the outer side of the drum restraint are arranged opposite the electromagnets. A bus connected to the electromagnets of the drum base is installed on the other restraint of the drum. Buses are connected to a control unit by means of sliding contacts. Rotation of the drum is determined by magnetic interaction between constant magnets and electromagnets. |
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Furnace for dry mineralisation of solid organic material Furnace for dry mineralisation of solid organic material comprises a lined casing of a drum rotating in the supports with a roller into which a bar-pipeline fitted by burners-plasmotrons to supply electric energy and plasma forming gas, carbon dioxide is introduced through the lower sealing unit and the upper sealing unit, a lock device with a conveyor to unload ash, a lock device with a conveyor to load the material into furnace, an exhaust system for additional gas catching, a pipeline to remove gaseous reaction products. The upper part of the drum can be provided with a sealable hole for material loading, the lower part of the drum can be provided with a sealable hole for solid product unloading. |
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Device for slight rectilinear displacement of hydraulically-driven working members Device for slight rectilinear displacement of hydraulically-driven working members comprises a hydraulic engine connected to a working member and to a non-adjustable pump fitted by a safety valve, via a flow regulator. The flow regulator comprises a case with a press-fit hardened bush with two plungers being installed inside so that they can move along the leading axis independently of each other. An eccentric drive is connected to the first plunger, and a micrometer screw set fixedly and fitted by an adjustment spring is connected to the second plunger. A differential spool is installed between the pump and the hydraulic engine and is coupled with a drain tank. The hydraulic engine piston is provided with an annular groove connected to the pump by channels in the rod via a throttling slot of the differential spool with the end cavities of the latter being connected to respectively the working cavity of the hydraulic engine and the annular groove on the hydraulic engine piston. The device is equipped by the drain tank. |
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Method of obtaining of bimetallic disk of gas turbine engine Method of obtaining of bimetallic disk of gas turbine engine comprises the filling of capsule of the disk consisting of the rim and hub parts, granules of two heat resisting nickel alloys, hot isostatic pressing of the capsule and subsequent heat treatment. The disk capsule is filled with the granules of two heat resisting nickel alloys differing by solvolysis temperature no more than by 5-10°C. For filling of the rim disk part the granules of one heat resisting nickel alloy with a fraction 140 mcm and more are used. For the hub part the granules of another heat resisting nickel alloy with a fraction no more than 70 mcm are used, meanwhile the hot isostatic pressing and heat treatment are performed at the same temperature exceeding the solvolysis temperature of each alloy. |
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Apparatus and method of producing multilayer safety glass Group of inventions relates to production of multilayer glass from at least two glass plates and an adhesive layer in between. The method employs an apparatus having a main plate and a closing plate capable of moving relative to each other between a working position and an extraction position. The plates are placed in the working position inside a frame formed by at least two ring holders. A sealing frame is hermetically mounted on said plates in the working position of the apparatus. The apparatus includes means of creating low pressure in the space formed between envelope material which covers the glass plates in the working position and the main plate, and means of creating high pressure in the working space. The working space is formed in the working position between the closing plate and said envelope material. The apparatus includes heating means for heating joined glass plates. |
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Method and device for application of metal coating by fluid process on ceramic fibre Invention relates to composited with metal matrix. Metal mix (22) is kept as-fused and in levitation in spherical mould inside crucible (12). Stretched fibre (24) of ceramic material is fed at preset rate between top pulley (26) and bottom pulley (28) located on both sides of said crucible. Fibre section (35) is displaced depending on residual volume of melt in crucible so that height (h) of the fibre immersed in said melt stays, in fact, constant during the entire application process. |
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Method of fabrication of tantalum powder Invention relates to powder metallurgy. Initial charge is loaded in the tight reactor, the charge contains oxygen or oxygen and oxygen-free tantalum compound and halogenide of alkali metal. In the reactor the inert gas atmosphere is crated, and charge is heated till melt. The alkali metal is injected in the melt during agitation, injection is performed in quantity equal to stoichiometric value with tantalum restoration. After the alkali metal injection to the melt additionally the powder oxygen-free tantalum compound is added, melt is held for 10-40 minutes. Then alkali metal is added in quantity ensuring restoration of the tantalum contained in additionally injected oxygen-free compound. The alkali metal is added by two stages with intermediate melt holding for at least 30 minutes. The obtained reaction mass containing tantalum and halogenide of the alkali metal is cooled, milled and obtained tantalum powder is washed. The obtained powder has smooth surface of particles, and content of alkali metal admixtures is below 1.8×10-3 wt %. |
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Invention relates to press equipment. Press 1 comprises carcass 2, first plate 3 with first tool part 4, second plate 6 with second tool part 7. Second plate is arranged between carcass 2 and second part 7. Press incorporates device 8 to feed blank 9 in between first and second tool parts and device 10 to extract machined parts 9' and male die 11. This press comprises additionally second displacing means 16 connected between carcass 2 and second part 7 for its horizontal displacement between pressing and extraction positions. Note here that first displacing means 5 are connected between carcass 2 and first plate 3 that can displace vertically. Second plate 6 is secured to carcass 2. In compliance with second version, said first displacing means 5 are connected between carcass 2 and second plate 6 that can displace vertically. In this case first plate 3 is attached to carcass 2. |
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Invention relates to metallurgy. This process comprises reconditioning of operating mandrel composed of 5-6 mandrel units at mill to first reconditioning to smaller size, 4-6 units to second reconditioning to smaller size, 3-4 units to third reconditioning to smaller size and 4 units before withdrawing of mandrel from operation. Note here that reconditioning to smaller size is performed unless separate perlite section originate in sorbite ply structure Note also that first reconditioning is made after reaching the mandrel durability of 0.75-0.80 of their mean initial durability Second reconditioning is effected after reaching 0.5-0.55 of their initial mean durability Third reconditioning is made after reaching 0.30-0.35 of mean initial durability with increase in metal diametral removal at every next reconditioning, scale removal and grinding before fitting at said mill. |
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Method of determining properties of deformation Flat sample of round shape is loaded with elastic punch in round rigid matrix in several stages, at each of which the intensity of the stress and the intensity of deformations is determines, and the diagram of actual stresses is made. |
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Pilger mill roll for hot rolling of 610(10-40mm-pipes Invention relates to metallurgy. Roll 1150 mm-dia body periphery includes round-section pass with tangential tapers composed of hammer with central angle of 70 degrees, grinding section with central angle of 100 degrees, angle of lengthwise taper with central angle of 40 degrees and idle section with central angle of 150 degrees. Angles of crosswise taper at hammer section from zero point to central angle are invariable and make 35 degrees. At hammer section with central angle of 50 degrees with transition to grinding section with central angle of 20 degrees crosswise taper angles smoothly decrease from 35 to 22 degrees while at grinding section with central angle of 80 degrees there are constant and make 22 degrees. At lengthwise taper angle of 40 degrees with transition to idle section with central angle of 15 degrees crosswise taper angles smoothly decrease from 22 to 35 degrees while at idle section of 135 degrees with transition to hammer with central angle of 20 degrees they make 35 degrees. |
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Making of drill bits with application of impregnation processes Invention relates to powder metallurgy, particularly, to production of drill bits by impregnation process. Solid element of the binder containing metal or metal alloy is placed to working mould. Matrix material powder layer is filled in the mould working cavity, material being based of transition metal carbide, or metal, or metal alloy containing carbide, and heated to allow transfer of fused binder from solid element for impregnation of said layer of matrix material powder. Said solid material can be placed in the channel communicated with moulding cavity in height hmv to feed fused binder from the channel at the level below 1/2hmv. This mould is heated to allow the passage for fused binder through the part of matrix material powder material for impregnation. |
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Sintering method of radar absorbent magnesium zinc ferrites Ferrite-forming oxides of magnesium, zinc and iron are mixed, and ferritic powder is synthesised in furnaces in air medium. Then it is crushed, polyvinyl alcohol is introduced as bonding agent and crushed mixture is granulated. Workpieces in the form of plates are formed by pressing from granulated ferritic powder, and high-temperature sintering of workpieces is performed in air medium. Plates are heated to sintering temperature and sintering is performed by penetrating electron beam. After sintering it is cooled down to temperature of 900-850°C by means of natural cooling of cell for radiation thermal sintering outdoors, further cooling down to room temperature is performed by means of passing through a cell for radiation thermal sintering of argon or nitrogen. |
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Method of electrode wire production Initially at one end of wire its diameter is decreased by value of allowance for draw die installation and to length required for the draw die installation, this wire end is fixed in movable pole, then draw die is installed on the wire end, its diameter is equal to the diameter of wire with reduced diameter, this end is secured in movable pole. The opposite end of the weakly tensioned wire is fixed in the fixed pole, then tension forced are applied to wire ends, the force does not exceed the tensile strength of the wire material, beginning of the wire elongation during LV direct current passage through the wire is registered. Then wire end in the fixed pole is released, and wire is drawn through the draw die maintaining permanent tension forces acting on wire. |
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Method of electrolite-plasma processing of metal surface Method includes polishing component of copper-containing alloy in electrolyte, used as anode, and synchronous application of copper coating on steel component, used as cathode. Voltage 250-340 V is supplied to cathode and anode with electrolyte temperature 60-90°C. Electrolyte is used in form of water solution, which contains ammonium chloride, ammonium fluoride and mono-, di-, tri-substituted ammonium citrate or their mixture. |
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Fuel composition and use thereof Invention relates to a lead-free fuel composition which contains: (a) as its basic part a mixture of hydrocarbons in the petrol boiling range and (b) a small amount of a mixture of additives comprising (i) one or more compounds of p-alkoxy-N-alkylaromatic amine of general formula |
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Aircraft wing comprises triangular body secured to fuselage and furnished with vertical oncoming airflow splitters arranged at body edge each having leading and trailing sections. Leading section is arranged ahead of body edge parallel about vertical plane extending along fuselage. One of trailing edges is attached to top airfoil and bent aside from fuselage. Another trailing section is secured to bottom airfoil and bent towards fuselage. Angle of the bend of splitter trailing section secured to top airfoil makes 5-15 degrees. Angle of the bend of splitter trailing section secured to bottom airfoil makes 5-15 degrees. |
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Method of obtaining 3-alkyldihydrofuran--2(3h)-ones Invention relates to a method of obtaining 3-alkyldihydrofuran--2(3H)-ones of formula |
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Invention relates to vehicles. Proposed vehicle comprises two connected wings arranged one after another, fuselage, engine, discs and screw propulsor. Fuselage is connected with beam supporting second wing and two-leg wheeled undercarriage. First wing is connected with said beam and equipped with two-leg wheeled undercarriage. Every wheel is equipped with disc and motor with screw propulsor. Said motor is equipped with electrical generator. Said wings and beams can telescope for in-flight control. Wings and/or beams can vary their position for aircraft controllability. |
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Light-loaded water-jet propeller Light-loaded water-jet propeller consists of impeller, straightener blades, water conduit and central body projecting forward and backward from water conduit. Water conduit represents ring with section chord length less or equal to impeller diameter. Inner surface of water conduit is made cylindrical and tapered. Central body diameter is variable along its length and has maximum value at aft section of water conduit. |
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Vehicle rear axle with two suspension levers provided with vertical opening Invention relates to automotive suspension. Rear axle comprises two suspension levers to swing in vertical plane. Every said lever is provided with the holder of rear wheel hub at its appropriate rear part. Additionally, rear axle comprises deformable crossbar to couple two suspension levers. Every suspension lever has vertical hole made on lever width space and ahead of hub holder axle, between said crossbar and hub holder wherein fitted in shock absorber. Lower attachment of the latter is coupled with suspension lever. |
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Hydraulic telescopic shock absorber of acs Shock absorber contains external cylinder with a support ball device and eye ring. In the external cylinder the internal and intermediate cylinders are installed, they are linked with above piston cavity. The above piston cavity is provided with shutoff valves connected with the discharge nozzle and drainage nozzle. The shutoff valve has control device for its forced opening. The damping device contains ring piston resting against spring, and bypass channels with adjusting ring. |
Another patent 2551191.