Structural composition and use of special materials or surface treatments, e.g. for rust-proofing (F16C33/12)

Front friction heating bearing with registration of its operation regimes // 2628547
FIELD: machine engineering.SUBSTANCE: thrust bearing oil film to the registration of its operating modes comprises an annular heel (8) and an annular thrust bearing (10) disposed in the housing (11) of the machine. Heel (8) has a smooth work hardened surface, while the thrust of the working surface (10) are protruding rollers (13) of the small needle martensite friction, side surfaces of which form wedges together with the heel (8). Rollers (13) are arranged on the working surface radii, spaced apart at a distance L = (1.5÷3) h at the minimum diameter of thrust bearing (10), where h - the width of the bead (13). The spherical annular thrust bearing surface zone (10) between the working side rollers (13) are located "abradable thermocouple" (15) protruding above the surface of the thrust bearing (10) by an amount equal to the height of the cylinder (13).EFFECT: creation of the thrust bearing fluid friction, which allows very quickly to register the temperature in the contact zone between the heel and thrust, instantly diagnose its operating modes - fluid friction and mixed friction.4 dwg
Bearing with sliding layer // 2626790
FIELD: machine engineering.SUBSTANCE: bearing with the sliding layer consists of the shape-generating body, with the antifriction bearing alloy on the basis of the copper or aluminium and the galvanic sliding layer, made from the material containing tin, antimony and copper. Tin with antimony in the amount of 0.5…4.9 wt % form the matrix as the solid solution with the addition of cadmium in the amount of 0.5…2.5 wt %, and copper with tin forms the compound Cu6Sn5, distributed in this matrix in the form of more solid copper-tin particles, with total copper content in alloy 2…25 wt %. The lead impurity content does not exceed 0.25% and the total impurity content of the remained elements does not exceed 1%.EFFECT: creation of the sliding layer bearing with improved operating characteristics.1 cl
Sleeve of the rail transport brake lever system // 2616113
FIELD: transportation.SUBSTANCE: sleeve of the rail transport brake lever system is made of the composite polymer antifriction material based on the moulded thermoplastic polyphenylene sulfide, containing the carbon fiber as the fiberfill, and also randomly arranged the carbon nanotubes in the form of the single-layer or multilayer with the number of layers from 2 to 70, or interleaved and folded in the graphite planes tube with the number of layers from 2 to 70. The outer diameter of the carbon nanotubes is selected from 0.5 to 100 nm, and their length is from 0.5 to 77 microns. As the moulded polyphenylene sulfide of composite polymer antifriction material base the polyphenylene sulfide Fortron or Tecatron is used, at the following quantitative content, wt %: carbon fiber - 9.2-42.8; carbon nanotubes - 0.02-0.74; polyphenylene sulfide - the rest up to 100%.EFFECT: increase the sleeve of the rail transport brake lever system service life due to significant reduction of the sliding working layer linear wear intensity during the friction on polished steel pair from steel 40X, reduction of the friction coefficient, keeping the friction coefficient stability level, when sliding along the material of counterbody from steel 40X, keeping the breaking stress at tension on the predetermined level, keeping the Charpy fracture toughness at the samples without notches, while keeping the predetermined limit of compression strength at the same time.4 cl, 2 tbl
Bearing with sliding layer // 2613640
FIELD: machine engineering.SUBSTANCE: bearing with the sliding layer consists of a mould body coated with an anti-friction bearing alloy based on aluminium or copper and electroplated sliding layer, which comprises a matrix of a solid solution of tin and antimony in an amount of 0.5…4.5 wt %, Containing inclusions of copper-tin compounds particles Cu6Sn5 with a total content of copper alloy 2…25 wt %. The lead impurity content of not more than 0.35% and the total content of other impurity elements does not exceed 1%.EFFECT: creation of the layer for a sliding bearing with improved operating characteristics.

ethod to restore size body motor-axle bearings of electric locomotives using arc spraying // 2577874
FIELD: processes.SUBSTANCE: invention relates to a method for reducing the size of the housing motor and axial bearing by means of an electric arc spraying. A method of reducing the size of the housing of the motor-axial bearings of electric arc metallization. On the outer surface of said bearing body pre-coated paste composition consisting of a liquid phenol formaldehyde resole resin capable of forming at a temperature above 700°C is not less than 50% by weight of coke of starting material, filled with urea in a weight ratio of the dry phenol formaldehyde resole resin: Urea 50:50 to 10:90, a layer thickness of from 1.0 mm to 5.0 mm, followed by spraying molten arc bronze electrodes jet flow of nitrogen present in the cylinder at a pressure of 2 to 10 atmospheres.EFFECT: reconstitution body size of said bearing is provided with significant simplification of technology and reduce the time of coating the outer surface of the bearing, while achieving complete elimination of burning of alloying elements and the formation of metal oxides during arc spraying while increasing the surface hardness and wear resistance of the coating by forming nitride by reacting metal comprising the electrode and the surface to be plated with an activated nitrogen.1 cl, 2 tbl, 1 ex

Bearing part made by butt fusion welding // 2566130
FIELD: metallurgy.SUBSTANCE: invention can be used for production of bearing part, for example, a welded ring of ring segment subjected to variable mechanical loads at rolling and sliding. Bearing part (10) is made of bearing steel and comprises at least one weld produced by butt fusion welding. Said part is made of steel containing not over 20 ppm of sulphur, not over 15 ppm of oxygen and sulphide inclusions. Less than 5% of said sulphides included encapsulated or embedded oxide inclusions. Said steel includes also the element selected from the group: Ca, Mg, Te or lanthanide such as Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu in amount of 10-30 ppm by weight.EFFECT: higher fatigue strength.15 cl, 6 dwg

Radial bearing of liquid friction // 2560203
FIELD: machine building.SUBSTANCE: radial bearing of liquid friction comprises bushing-trunnion (1) located in the bushing-insert (3). On the surface of the bushing-trunnion (1) the system of parallel martensite beads (3) is created, it during the bearing movement ensures maximum number of the oil wedges, creating the hydro dynamic forces supporting the bushing-trunnion. Beads (3) are made on the bushing-trunnion (1) in form of system of parallel beads (3) one after another at distance L = (1.5÷3)h from each other, where h is bead width (3), projecting above the surface by 0.3÷1.5 mm, in direction parallel to the bearing axis. The beads are made on the bushing-trunnion (1) in form of two systems of the parallel beads: one after another, in form of mesh at angle 2β = 60÷120°. Both systems are located symmetrically relatively to the direction of the bearing movement during operation at circumferential distance L1 = Lcosβ from each other.EFFECT: creation of the radial bearing of liquid friction with design ensuring maximum possible number of oil wedges, design considers the possibility of short-term operation at low sliding speeds, change of load direction on the bearing, possibility of reverse operation, the bearing is simple in manufacturing, has long service life and is cheap.3 cl, 7 dwg

Thrust bearing of liquid friction (versions) // 2560202
FIELD: machine building.SUBSTANCE: thrust bearing of liquid friction comprises ring bearing plate (1) with smooth work hardened surface and ring centre plate (2) located in the machine casing (4). On the work surface (3) of the centre plate (2) the convex beads are located, they are made out of fine-needled martensite, side surface of beads create wedges together with the centre plate (1). The beads are located on the work surface (3) of the central plate (2) along radiuses, and they are located with spacing L = (1.5÷3)h on the internal diameter of the central plate D0 (h is bead width) and go to the outside diameter Dmax creating the first system, on the diameter D1 = 2D0 the beginning of beads of the second system are located, they go to outside diameter Dmax and are located at middle between the beads of the first system, and on the diameter D2 = 4D0 the beginning of beads of the third system is located, the beads go to outside diameter Dmax and are located in middle between the beads of the fist and second system. The beads can be of same length and located on radiuses in range of diameters of the centre plate from (0.5÷0.8) Dmax to Dmax.EFFECT: creation of the thrust bearing of the liquid friction able to operate in two directions of rotation, at minor number of starts and shutdowns, withstanding short-term overloads and not requiring high accuracy machines and multiple operations during its manufacturing, not requiring shaping-up, easy in installation and operation.2 cl, 4 dwg
ethod of manufacturing of part of wear-resistant and antifriction coating // 2549812
FIELD: machine building.SUBSTANCE: preliminary a rod is made by pressing and sintering of the composition containing copper powder, PTFE powder and ammonium chloride. To the work surface of the part a composition is applied containing 1…3 wt % of copper chloride in glycerine. Then the rod is put in friction contact with the work surface of the part with sliding speed 0.06…0.09 m/s at longitudinal feed rate 50…80 mcm/rev, pressure 30…50 MPa, and number of passes 4…6. The obtained coating is passivated, then lubricating composition based on soap plastic lubricant comprising copper powder and PTFE powder is applied. At that prior to the lubricating composition application it is preliminary heat treated in inert gas by pressing-through 3…5 times under pressure via the gap between external and internal cages of the heated and installed in series roll bearings.EFFECT: increased antiwear properties of the coating and antifriction properties upon increased durability of the coating.1 tbl

Friction surface // 2541596
FIELD: machine building.SUBSTANCE: friction surface (1) of part (2) has regular relief in form of cavities (3) acting as lubricating tanks for the surface applied lubricant (4). Surface of cavities (3) is covered with layer of the material (5) having lower adhesion properties in relation to the used lubricant (4) in comparison with the friction surface (1).EFFECT: higher efficiency of lubrication.2 dwg

Plain bearing and method of its manufacture // 2539022
FIELD: wood working industry.SUBSTANCE: plain bearing is made from compressed impregnated wood with a radial arrangement of fibres and uniform density along the whole section and contains greasing in amount 7-8% from the wood mass, and metal inclusion. The wood of the bearing contains nano-crystalline cellulose in the amount 0.5-0.8% from the wood mass, and the metal inclusion is implemented as a continuous nickel film in amount 4-6% from the wood mass with the width 0.8 mcm, covering internal surface of wood completely. The method of manufacture of the named plain bearing is also offered which comprises the manufacture of segments (4) of compressed impregnated wood with a radial arrangement of fibres and radiuses of rounding of the future bearing, application of glue, installation into auxiliary cartridge clip (1), pressing through a cone (2) with a cone angle (2), allowing to increase a density up to the value 1350 kg/m3 minimum, glue solidification and, if necessary, machining job along an internal diameter with a minimum rough tolerance.EFFECT: improvement of quality of a plain bearing and decrease of manufacture complexity.2 cl, 6 dwg, 1 tbl

aterial of sleeve bearing // 2524812
FIELD: chemistry.SUBSTANCE: invention relates to application of CuFe2P in sleeve bearing or as material of sleeve bearing, with CuFe2P representing copper alloy, which contains 2.1-2.6 wt % Fe, 0.05-0.2 wt % Zn 0.015-0.15 wt % P, to 0.03 wt % Pb and to 0.2% of other additives. Invention additionally relates to composite material (1) of sleeve bearing, which contains support layer (2) and bearing metal layer (3) based on CuFe2P with Fe2P particles formed on it (4).EFFECT: creation of sleeve bearing material, which has advantages of copper-based materials, in which it is possible to refuse from application of lead and which has good workability and excludes bearing cramping, in addition, material of sleeve bearing was easily produced and applied on usual support layers, with application of CuFe2P resulting in sleeve bearings with high heat conductivity and good mechanic properties.11 cl, 2 dwg, 2 tbl, 2 ex

Sliding element with exposed functional surface // 2520908
FIELD: engines and pumps.SUBSTANCE: set of inventions relates to ICE sliding parts. Proposed part comprises substrate with coating thermally deposited thereon and exposed contact surface including at least two different-strength two-phase-material coating. Note here that at least one of coating phases of lower strength is recessed relative to the other coating phase. Making of the part includes preparation of substrate, thermal deposition of coating with exposed contact surface to recess at least one of material phases relative to the other phase. Note also that lower-strength coating material is recessed.EFFECT: optimum tribological properties.20 cl, 1 dwg, 1 ex

Sleeve of braking leverage system of rail transport // 2499921
FIELD: machine building.SUBSTANCE: sleeve is made from composite polymer anti-friction material on the basis of polyamide containing carbon fibre or a mixture of carbon fibre with glass fibre as a fibrous filler. In addition, the material contains chaotic carbon nanotubes in the form of single-layer, multi-layer graphite planes with the number of layers of 2 to 70 or inserted into each other and bent into a tube; outside diameter of carbon nanotubes is 0.1 to 100 nm, and their length is 1 to 70 mcm. As a base, the material also contains polyamide mixture with 20-40 wt % of polyethylene caproamide. As material base polyamide, there used is polyamide 6, or Kaprolon B or Ertalon; content of fibre glass in its mixture with carbon fibre of fibrous filler of composite polymer anti-friction material is 3.48 to 10.5 wt % at the following component ratio, wt %: carbon fibre or a mixture of carbon fibre and fibre glass 9.7-42.4; carbon nanotubes 0.05-0.55; polyamide is the rest - up to 100%.EFFECT: increasing sleeve service life due to considerable reduction of intensity of linear wear of a working layer of sliding at friction on polished steel pair from steel 40X, increasing stability of friction coefficient at friction on the material of counter body from steel 40X, and improving breaking stress at tension, preserving Charpy impact strength on specimens without any notch at simultaneous maintenance of the specified limit of compressive strength, as well as low friction coefficient at increase of its stability.4 cl, 2 tbl

ethod of making wear-proof antifriction self-lubricating apply // 2492964
FIELD: process engineering.SUBSTANCE: invention relates to powder metallurgy, particularly, to production of wear-proof antifriction self-lubricating alloy with larger amount of alloy. Pulverised powders of Al-40Sn-composition are pelletised and sintered in inert atmosphere at 590-615°C for 90-30 min. Sintered pellet is subjected to equal-channel angular extrusion at invariable position of deformation plane.EFFECT: high mechanical and tribotechnical properties at steel friction in the absence of lubrication.7 dwg

Sleeve of braking leverage system of rail transport // 2482342
FIELD: machine building.SUBSTANCE: sleeve is made from composite polymer antifriction polyamide-based material containing a mixture of carbon fibre and glass fibre, as well as a powder filler as a fibrous filler. As a material base, it contains polycaproamide or mixture of polycaproamide with 20-40 wt % of polyethylene caproamide. As carbon fibre, the material contains carbon fibre obtained from high-molecular hydrocellulose fibre; content of glass fibre in the mixture is 3.48 to 10.5 wt %. As powder filler, the material contains colloid-graphite solution with particle sizes of 400 to 4000 nm, or silicon oxide in the form of marshalite or colloidal silica with particle sizes of 400 to 8000 nm. Sleeve material contains components in the following ratio, wt %: mixture of carbon fibre and glass fibre 28.5-43.0; powder filler 1.4-3.2; mineral oil 1.0-2.0; polymer matrix is the rest (up to 100%).EFFECT: increasing sleeve service life due to considerable reduction of intensity of linear wear of a working layer of sliding at friction on polished steel pair from steel 40X, increasing stability of friction coefficient at friction on the material of counter body steel 40X, and improving Charpy impact strength on specimens without any notch at simultaneous maintenance of low friction coefficient and the specified limit of compressive strength.6 cl, 2 tbl
Antifriction coating // 2481502
FIELD: machine building.SUBSTANCE: proposed antifriction coating comprises molybdenum disulphide and binder. Said binder represents organic silicon compound. Diamond nanoparticles are additionally introduced in coating composition.EFFECT: higher operating temperatures and wear resistance.5 cl, 1 ex
ethod for manufacturing anti-friction layer of sleeve half-bearing // 2480637
FIELD: machine building.SUBSTANCE: method for manufacturing anti-friction layer of sleeve half-bearing consists in oversized boring after sleeve casting and its plastic deformation. Plastic deformation is made within the range of recrystallisation temperature of matrix alloy phase, but not exceeding the temperature of melting of disperse phases at average speed of deformation 10-2≤ε≤10 s-1. Deformation is made in several transitions with changing of direction by transitions to opposite one. Deformation is done by tool, the material, thermal processing and roughness of which corresponds to the material of shaft neck joined with the bearing.EFFECT: increase of product wear-resistance due to creation of small grain structure of top layer, provision of positive gradient of mechanical properties by depth, reduction of surface roughness due to smoothing microroughnesses by breaking-in roller and reduction of material wearing-in period.3 cl, 1 tbl, 1 ex

Composition for making car adjusting device // 2476466
FIELD: chemistry.SUBSTANCE: invention relates to use of a composition for making at least one component of a car adjusting device. The composition contains partially crystalline, partially aromatic polyamide and is modified by at least one elastomer with weight ratio from 1% to 10% of the composition. The composition is used to make an adjusting device for changing the position of the controlled car component, having at least one gear wheel of a drive mechanism, one guide element and/or one sliding element.EFFECT: invention enables to use the composition to make at least one component of an adjusting device and an adjusting device without considerable expenses with mechanical properties sufficient for operation.14 cl, 7 dwg, 2 tbl, 2 ex
Sliding element and method for its production // 2456486
FIELD: machine building.SUBSTANCE: sliding element with a pre-shaped substrate and galvanically applied anti-friction layer, formed of an alloy of tin, antimony and copper, whose content is in wt %: 5-20% antimony, copper 0.5-20% and the rest is tin, and lead content <0.7%, and the full content of other components is <0.5%, and in the layer of sliding bearing the tin crystals are of predominantly globular shape. Method of receiving a sliding element is that the electrolytic deposition of antifriction layer of an alloy with the components of tin, antimony and copper is carried out, and an electrolyte as a wetting agent preferably contains C13C15-oxo-alcohol, C16C18-fatty alcohol C18-oxo-alcohol with degree of ethoxylation from 10 to 30. The composition and deposition rate are adjusted by addition of auxiliary substances with large molecules, resulting in increased anti-friction layer and emerging of crystals of tin of a globular shape.EFFECT: creation of the layer for a sliding bearing with improved operating characteristics.10 cl, 1 ex
ethod for production of aluminium-lead friction bearings // 2453742
FIELD: metallurgy.SUBSTANCE: method for producing aluminium-lead friction bearings is that preliminary the workpieces are produced out of porous aluminium with open porosity by the known technologies of casting into reusable moulds. Then the pores are filled with molten lead while a workpiece is located in the same mould. The result is a product with uniform content of lead along the cross-section of the product and the size of lead inclusions is equal to the size of pores in the porous aluminium.EFFECT: improved quality of aluminium-lead bearings and reduced complexity of their production.1 ex
Thin-layer ceramic coating, method of making same, friction surface based on thin-layer ceramic coating and method of making same // 2453640
FIELD: metallurgy.SUBSTANCE: thin-layer ceramic coating with the friction surface, formed with the ability to absorb grease with fibrous crystals alpha-Al2O3, characterised by the ability to layering with formation of longitudinal cracks with transverse size of ~ 1 nm and more due to longitudinal defects in the crystal lattice. A method of producing coating with the friction surface involves microarc oxidation of a part in the anode-cathode mode at a ratio of values of Ic/Ia = 1.0 - 1.15 for 90 -240 minutes consecutively in two electrolytes, and microarc oxidation in the second electrolyte is carried out with periodic pulsations of the anodic and cathodic current by 30% - 50% of the DC current mode for formation of longitudinal crystal lattice defects of fibrous crystals alpha-Al2O3.EFFECT: increased bearing capacity of the thin-layer ceramic coating and the friction surface made on its base, by increasing damping of the mechanical effects on the surface in the pairs of friction formed on its basis.2 cl

ethod of producing antifriction sheet materials // 2438829
FIELD: process engineering.SUBSTANCE: invention relates to powder metallurgy, particularly, to materials intended for production of antifriction sheet materials on metal substrate. It may be used for producing antifriction bearings operated both lubed and dry, at higher sliding speeds, loads and temperatures. Porous cermet layer is produced on substrate from iron-nickel alloy by sintering a mix of fine disperse powders of copper and alloy to said substrate by pressing there said mix against said substrate by stainless steel gauze at 810-820°C. After sintering, said gauze is removed to produce sintered porous layer of reticular structure. Content of said powders in said mix makes in wt %: copper - 84-86, tin - 14-16.EFFECT: higher wear resistance and stable friction factor (0,1-0,12).2 dwg, 1 ex
Composition of anti-friction powder materials on base of copper // 2396144
FIELD: metallurgy.SUBSTANCE: invention refers to powder metallurgy, particularly to anti-friction materials for high-loaded friction units. The invention can be implemented, for example for fabrication of anti-friction bushings. Anti-friction powder material on base of copper is produced out of charge containing, wt %: tin powder 0.5-10; led powder 0.5-1.0, graphite 0.3-0.5; copper powder - the rest. Charge is pressed and sintered at successive increase of temperature from 20 to 600°C and conditioning during 1.5 hours. Further temperature is raised to 660 ± 5°C, charge is conditioned during 1.5 hours and cooled in air by means of blow-off in a flow of dissociated ammonia. Charge is then calibrated at specific pressure equal to compacting pressure and is repeatedly sintered with successive increment of temperature form 20 to 860 ± 5 °C, holding during 1.5 hours and cooling in air.EFFECT: produced material possesses high anti-friction property and high wear resistance.

Friction bearing between two travelling parts, one relative to another // 2395017
FIELD: machine building.SUBSTANCE: friction bearing consists of first element of bearing made out of austenite steel and second element of bearing made out of martensite steel possessing higher hardness. Also the first element corresponds to a padding, surface of which has higher hardness due to treatment by cold deformation of hardening. Additionally the first element is formed with cylinder rims (107, 108) connecting sole of shaft (114) with platform (113), while the second element is formed with bushings (104, 105) positioned in bored orifice of the case (103).EFFECT: reduced wear occurring between two parts and essentially increased service life of parts.9 cl, 6 dwg
Antifriction material // 2392509
FIELD: chemistry.SUBSTANCE: invention refers to powder metallurgy and can be applied in manufacturing of wear-resistant engineering devices and elements, such as slide bearings operating in extreme and dry friction conditions. Antifriction material is based on iron, graphite, calcium fluoride, phosphor, manganese sulphide, zinc and copper at the following component ratio, wt %: graphite 0.5-3, calcium fluoride 0.1-1, phosphor 0.05-1, manganese sulphide 0.1-1, zinc 0.05-1, copper 10-30, the rest is iron.EFFECT: obtainment of high-temperature dispersed compact iron-based powder materials of enhanced hardness and corrosion resistance.

ethod of receiving of antifriction powder material on basis of copper // 2378404
FIELD: metallurgy.SUBSTANCE: invention can be used at manufacturing of antifriction bushings. It is prepared charge containing, wt %: tin powder 9.5-10; leady powder 0.5-1.0; graphite 0.3-0.5; powder copper electrolytic - the rest. Charge is pressed and sintered by means of sequential increasing of temperature up to 600°±5C with isolation during 1.5 hours, following increasing of temperature up to 660°C±5°C with isolation during 1.5 hours and cooling on air, by means of blow-off in flow of dissociated ammonia. After sintering it is implemented calibration at specific pressure, equal to compacting pressure, with following iterative sintering by means of following increasing of temperature up to 860°C±5°C with isolation during 1.5 hours and following cooling on air.EFFECT: increasing of antifriction properties, increasing of wear resistance.2 cl, 1 dwg
Couple of guide elements, one of which is implemented from special steel, providing improvement of stability characteristics against jamming // 2377450
FIELD: machine building.SUBSTANCE: invention relates to mechanical parts, which relates to category of guide elements, particularly entered into the composition of systems or hinged connection shaft/support. At least, one of couple of guide elements is implemented of steel, which contains, at least carbon in amount from 0.15 up to 0.3 wt %, chrome in amount from 2 up to 5 wt % (preferably from 2% up to 3%), molybdenum in amount, at least, equal to 0.45 wt % (in preference not more than 0.9 wt %), and vanadium in amount more than 0.01 wt % and not more than 0.5 wt % (in preference not more than 0.3%). This steel is nitride after formation so that receive intermediate layer between atoms of iron and nitrogen of thickness which is in the range from 5 micron up to 50 micron. It can additionally contains from 0.4 wt % up to 1.5 wt % of manganese.EFFECT: wear resistance increasing of couple of guide elements.21 cl
Friction pair of radial bearing // 2364764
FIELD: mechanical engineering.SUBSTANCE: invention refers to mechanical engineering and may be used in friction assemblies working in complicated conditions, for example in creation of submerged centrifugal pumps for crude oil production designed to work in wells with high concentrations of solids in formation fluid. Friction pair contains movable and fixed half-pairs made of hard durable materials. In the first version movable half-pair is made entirely from powder material on the basis of one of the following ceramic and metal-ceramic materials: WCCo, WCCoCr, Cr3C2NiCr, Al2O3, ZrO2 with copper allow (e.g. bronze) addition in amount of 5 to 40 wt % via powder metallurgy technique. In the second version movable half-pair at least at the side of fixed half-pair is performed with coating from above mentioned composition. Movable half-pair surface at least at the side of fixed half-pair and/or fixed half-pair surface at least at the side of movable half-pair may be performed with impregnation with solution of fluorinated detergents.EFFECT: lowering friction factor and improvement of durability of friction pair.5 cl, 2 tbl

ultilayer compositional material for plain bearings, manufacturing and application // 2354865
FIELD: machine building.SUBSTANCE: invention relates to multilayer compositional materials for plain bearings or bushes which are desirable to use sliding layers not containing lead. Multilayer compositional material contains base layer, layer (3) of bearing metal from copper or aluminium alloy, nickel intermediate layer (2) with thickness exceeding 4 mcm, and sliding layer (1) which contains from 0 to 20 wt %, of copper and/or silver, the remaining part - tin. Sliding layer is obtained by method of galvanic precipitation from methyl sulphoacid electrolytes.EFFECT: reduction of production-technological expenditures in manufacturing multilayer compositional material, more homogeneous distribution of materials in matrix and, as a result, in case of vibrations - smaller probability of low-melting eutectic regions emergence, increase of operational reliability.22 cl, 1 tbl, 3 dwg

ultilayer compositional material for plain bearings, manufacturing and application // 2354864
FIELD: machine building.SUBSTANCE: invention relates to multilayer compositional materials for plain bearings or bushes which are desirable to use sliding layers not containing lead. Multilayer compositional material contains base layer, layer (3) of bearing metal from copper or aluminium alloy, nickel intermediate layer (2) with thickness exceeding 4 mcm, and sliding layer (1) which contains from 0 to 20 wt %, of copper and/or silver, the remaining part - bismuth. Sliding layer is obtained by method of galvanic precipitation from methyl sulphoacid electrolytes.EFFECT: reduction of production-technological expenditures in manufacturing multilayer compositional material, more homogeneous distribution of materials in matrix and, as a result, in case of vibrations - smaller probability of low-melting eutectic regions emergence, increase of operational reliability.27 cl, 1 tbl, 3 dwg
Antifriction material романит-увл, method of production of such material and component of friction unit // 2336444
FIELD: metallurgy.SUBSTANCE: invention refers to antifriction materials produced in powder metallurgy and implemented in components of friction units of machines, mechanisms, equipment and in current-collecting elements. Antifriction material contains, wt %: ferrophosphorus 0.50-5.40, carbon fibres 0.50-15.00, iron 10.91-26.25, graphite 0.16-5.16, granules 2.00-24.00, copper - the rest. Material is composed as sintered powders with localised inclusions of granules. Granules are of 0.4-2.0 dimensions and contain, wt %: copper 37.0-60.0, graphite - the rest. Material is produced by means of granulating of mixture of copper and graphite powders and successive mixing of granules with powders of ferrophoshorus, copper, graphite, iron and carbon fibres. Produced charge is formed and sintered. There is described a component of a friction unit with a baked layer of produced antifriction material. Produced porous-free antifriction material possesses high mechanical strength and ability to create dividing films on the surface which prevent wear of a contact pair.EFFECT: obtaining material of high density facilitating prevention of wear of contacting pair.9 cl
Antifriction material романит-ст, method of producing such material and component of friction unit // 2336443
FIELD: metallurgy.SUBSTANCE: invention refers to antifriction materials produced in powder metallurgy and implemented in components of friction units of machines, mechanisms, equipment and in current-collecting elements. Antifriction material contains, wt %: ferrophoshorus 0.5-5.4; glass 0.5-25.0; iron 10.91-26.25; graphite 0.16-5.16; granules 2.0-24.0; copper- the rest. Material is composed as sintered powders with localised inclusions of granules. Granules are of 0.4-2.0 dimensions and contain, wt %: copper 37.0-60.0, graphite - the rest. Material is produced by means of granulating of mixture of copper and graphite powders and successive mixing of granules with powders of ferrophoshorus, glass, copper, graphite and iron. Produced charge is formed and sintered. There is described a component of a friction unit with a baked layer of produced antifriction material. Produced porous-free antifriction material possesses high mechanical strength and ability to create dividing films on the surface which prevent wear of a contact pair.EFFECT: obtaining material of high density facilitating prevention of wear of contact pair.9 cl
Sintered antifriction material on base of cobalt // 2335555
FIELD: metallurgy.SUBSTANCE: sintered material, wt %: titanium carbide 3.0-7.0; molybdenum disulphide 12.0-16.0; boron 0.2-0.6; tantalum 3.2-4.8; cobalt - the rest.EFFECT: high wear resistance.1 tbl

ethod of film lubrication bearing preparation to operation // 2327908
FIELD: mechanics.SUBSTANCE: invention relates to film lubrication bearing operation and mainly to roll mill bearings. Process fluid is applied to pre-cleaned operating surfaces of bearing items. Process fluid consists of repair and recovery compound mixed homogeneously in grease lubricant. Bearing is assembled and rotated as a unit regarding longitudinal axis applying external force to operating area of bearing items. Force value is 0.1 - 1.0% from loading capacity of bearing. In addition, protective layer is formed on operating surfaces in two stages. During second stage of protective layer formation, bearing is rotated and process fluid is applied periodically on operating surfaces of bearing items. Fluid contains repair and recovery compound which is homogeneously mixed in oil. Finally, operating surfaces of bearing items are rinsed.EFFECT: increase of bearing life time and improvement of equipment operation reliability.3 cl, 1 dwg

Dense self-lubricating material, method of preparation thereof, and a mechanical product therefrom // 2320739
FIELD: antifriction materials.SUBSTANCE: invention relates to preparation of self-lubricating materials, which can be used for parts of turbomachines. Dense material self-lubricating throughout its volume is formed by a metal matrix containing 1 to 30% of solid lubricant particles with volume density more than 90%. Preparation thereof comprises preliminarily preparing homogeneous mixture from metallic powder material, solid lubricant particles, and organic binder. Resulting mixture is molded involving pressing or injection casting to give blank, which is then removed from mold, freed of binder, and caked. Final material has coefficient of friction less than 0.3 and mechanical strength at least 400 MPa within temperature range 300 to 600°C.EFFECT: enhanced antifriction properties and strength.20 cl
ethod to increase service life of antifriction bearing // 2319869
FIELD: mechanical engineering; bearings and their manufacture.SUBSTANCE: method comes to application of microcrystal bivariately regulated coating of highly divided aluminum oxide with sealing additions of titanium, yttrium and magnesium oxides to bearing outer race. Coating is applied on supersonic plasma jet spraying plant.EFFECT: increased service life of ceramic coating on outer races of bearing, prevention of electroerosion and microwelding of solid of revolutions.2 cl

ethod of forming antifriction coating on thin-walled steel shells of sliding supports // 2319049
FIELD: mechanical engineering.SUBSTANCE: invention can be used in rotary machines to which higher requirements as to high speed and possibility of repeated startings and stoppings are placed. According to proposed method, layer by layer plasma deposition with separated delivery of powder tin and aluminum to exit of nozzle of plasma generator is carried out in two steps. At first step main layer is deposited by delivering powder aluminum alloy A06 onto preliminarily prepared deposited sublayers under exit of nozzle of plasma generator. When main layer of required thickness is formed, without stopping delivery of alloy A06, second stage of deposition is started to form working layer by simultaneous delivery of powder tin under exit of nozzle of plasma generator, powder material AS06 of the same content of components being delivered together with powder tin. Second step of deposition is stopped when required thickness of antifriction layer is formed. Powder alloy A06 is fed under exit of plasma generator along two tubes, and powder tin, along third tube, with arrangement of feed tubes at 120° relative to each other.EFFECT: increased service life, improved corrosion resistance, increased gripping load, simplified process of deposition, reduced cost of manufacture and restoration of thin-walled shells.2 dwg

ethod of realization of no-wear phenomenon at sliding friction // 2310777
FIELD: mechanical engineering; internal combustion engines.SUBSTANCE: according to proposed method of realization of no-wear phenomenon at sliding friction provided by reduction of viscosity of surface layer of alloy, reduction of viscosity for alloys with high-plasticity structural component (aluminium- tin, aluminium-lead) is obtained owing to exclusion of oxides from surface layer in zone of friction by means of selective gas membranes.EFFECT: provision of easy realization of no-wear phenomenon irrespective of operating conditions of internal combustion engines, three-five time reduction of wear of sliding bearings.2 ex, 2 tbl
Sliding support // 2302564
FIELD: mechanical engineering; various sliding supports.SUBSTANCE: proposed sliding support may be made in form of solid bush or split bush consisting of segments or in form of solid ring or half-ring, disk or plate. Working sliding friction surface is made from polymer anti-friction composite material which contains thermosetting binder, fibrous filler and powder filler; 30-45 mass-% of fibrous filler made from polymer anti-friction composite material is located in disorder and 55-70 mass-% of fibrous filler is located perpendicularly or at angle of 60-89° relative to working sliding friction surface. Proposed sliding support makes it possible to increase service life due to reduced intensity of linear wear both of material of support and material of contra-part made from steel, cast-iron, bronze, etc.EFFECT: increased service life; increased micro-hardness; reduced dynamic friction coefficient in friction pair at retained impact viscosity and resistance to lamination.9 cl, 2 tbl

Antifriction bearing for flying vehicles // 2300575
FIELD: antifriction bearings used in flying vehicles, helicopters in particular.SUBSTANCE: proposed antifriction bearing is either single-row or double-row bearing with thin-walled revolving races which are made from hardened martensitic steel have the following parameters: surface hardness ≥613 HV (56 HRC) in zone of raceway surfaces, difference (Δ) between surface hardness and hardness of core ≥150 HV (9 HRC); hardness of core is determined at depth between 8% of rolling element diameter and 90% of thickness of wall under raceway; ratio of pitch diameter T to rolling element diameter D≥20.EFFECT: avoidance of cracking.7 cl, 2 dwg

ethod for reinforcing pivot shafts of drilling rolling cutter bit legs // 2288339
FIELD: method for reinforcing pivot shafts of drilling rolling cutter bit legs, possible use in mechanical industry during manufacture of drilling equipment for building wells by deep and ultra-deep drilling, and also for drilling explosive wells with air blasting of bottomhole.SUBSTANCE: prior to cementation, welding deposition of sliding bearing tracks is performed using hard alloy, and onto surfaces of leg pivot shafts not subjected to cementation, anti-cementation cover is applied. After cementation, heat hardening and low tempering, polishing and cleaning of sliding bearing tracks is performed. Then, wear-resistant protective cover is applied onto them with hardness ranging from HRC 65 to HRA 74 by spraying at warming temperature of leg pivot shaft not exceeding softening temperature of cemented surfaces. Protective cover is applied, when maximum temperature of leg pivot shaft warming does not exceed 280°C. Wear-resistant protective cover is applied in one or several layers, until given rated thickness of 0,1÷0,5 millimeters is reached. At thickness of protective cover more than 0,2 millimeters unevenness of layer application may be corrected by micro-smoothing using diamond wheels.EFFECT: substantially increased hardness on the surface of sliding bearings of leg pivot shafts and to appropriately increase their own wear resistance as well as that of drilling bits as a whole.4 cl, 1 dwg
Antifriction copper-base powder materials production method // 2285582
FIELD: powder metallurgy, namely production of antifriction composition copper base powder materials, possibly for making sliding bearing assemblies.SUBSTANCE: method comprise steps of preparing charge containing bronze-graphite powder with particle size no more than 250 micrometers produced by grinding waste bronze-graphite bearings and copper powder in quantity consisting 11-12% of bronze-graphite powder quantity; pressing prepared charge under pressure 250 - 270 MPa and sintering it in protection medium at 890 -910°C for time period no less than 60 min.EFFECT: improved operational properties of materials, lowered wear of parts joined with such material in friction assemblies.2 cl, 2 ex

Anti-friction alloy and method of manufacture of bimetal blanks for bearings from this alloy // 2284364
FIELD: metallurgy; aluminum-based anti-friction alloys; manufacture of bearings.SUBSTANCE: proposed alloy contains the following components, mass-%: lead, 1.5-3.5; tin, 9.0-12.0; copper, 1.5-4.0; nickel, 0.5-2.0; bismuth, 0.1-0.3; zinc, 0.1-0.5; silicon, 0.4-1.5; titanium, 0.01-0.2; the remainder being aluminum. Proposed method consists in melting the anti-friction alloy followed by heat treatment at 340-360°C for 3-4 h not later than 4 hours after melting the alloy. Subsequent rolling is carried out at three stages; degree of deformation at first stage ensures cladding of blank with aluminum. Second stage is carried out immediately after first one; between second and third stages, blank is subjected to annealing at temperature of 340-360°C continued for an hour. Aluminum-cladded strip made from anti-friction alloy is subjected to joint deformation with steel strip. Final annealing of blank is carried out at temperature of 340-360°C for 3-4 h.EFFECT: enhanced fatigue strength and resistance to scores.9 cl, 1 tbl, 1 ex

Friction unit // 2270380
FIELD: mechanical engineering.SUBSTANCE: friction unit comprises members that made of inner and outer races made of a multi-phase durable alloy having common cylindrical or spherical zone for cooperation with the working surfaces.EFFECT: enhanced reliability.4 cl, 5 dwg

ultilayer laminate for plain bearers // 2247658
FIELD: production of antifriction materials.SUBSTANCE: the invention is dealt with production of antifriction materials, which are used in plain bearers. The invention offers a multilayer laminate for plain bearers with a base layer, a layer of a bearing alloy, the first interlayer made out of nickel, the second interlayer made out of tin and nickel, and also a sliding layer made out of copper and tin. At that the sliding layer(4) has a mould (5) made out of tin and including the copper-stannic particles (6) consisting by 39-55 mass % out of copper and the rest - tin. The technical result of the invention is an increase of wear-resistance of the material at an increased specific loading on it.EFFECT: the invention ensures an increase of wear-resistance of the material at an increased specific loading on it.9 cl, 4 dwg, 1 ex

Composite powder material for friction assembly // 2245386
FIELD: powder metallurgy, in particular powder composites.SUBSTANCE: claimed self-lubricating powder composite contains (mass %): coppered graphite grains having fineness of 160-200 mum and containing 70-75 % of copper - 16-17; coppered polymer grains having fineness of 50-200 mum and containing 50-60 % of copper - 7-9; coppered nickel grains having fineness of 100-200 mum and containing 25-35 % of copper - 3-5; coppered chromium grains having fineness of 25-75 mum and containing 30-40 % of copper - 6-8; and copper powder having fineness of 100-160 mum. Material of present invention is useful in metal processing, paper converting industry, etc.EFFECT: matrix with increased hardness, wear resistance, and improved durability.2 tbl

Slide bearing // 2244856
FIELD: mechanical engineering.SUBSTANCE: slide bearing has load-carrying substrate and at least one metallic layer applied by electric-beam spraying. The surface of the sliding layer has rounded projections and hollows. The projections occupy 30-50% of the total area of the bearing. The diameter of the projections is 3-8 μm. The method of making the slide bearing includes electric-beam spraying of substrate whose roughness is equal to 2 μm under the pressure less than 0.1 Pa.EFFECT: enhanced resistance to wearing.4 cl, 3 dwg

Bearing device // 2244177
FIELD: .mechanical engineeringSUBSTANCE: member is applied with silver-copper alloy of 15 % to 60 % of silver.EFFECT: enhance efficiency.3 cl, 17 dwg

The slide bearing // 2235928
The invention relates to mechanical engineering and can be used in a detachable and non-detachable bearings, including double-layer and multi-layer, the inner and outer rings of rolling bearings, gears, etc
 
2551391.
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