echanical metal-working without essentially removing material and punching metal (B21)

B21            echanical metal-working without essentially removing material; punching metal(50913)
ethod of metal part producing // 2607389
FIELD: machine building.SUBSTANCE: invention relates to turbine machines and can be used during production of metal part, intended for turbomachine blade reinforcement on its front and rear edges. Method involves stage, on which, at least, one winding metal strip (102, 102') from thin metal foil with recesses, is positioned on forming equipment. Strip has possibility of manual deformation in cold state in space in three directions (X, Y, Z). At next stage performing isostatic pressing of, at least, one metal winding strip (102, 102') in equipment. At that, metal strip (102, 102') sintering takes place with production of metal part.EFFECT: result is manufacturing process simplification due to fewer operations and avoiding use of complex equipment.9 cl, 7 dwg
Heat-resistant matrix for moulding articles from composite materials // 2607362
FIELD: technological processes.SUBSTANCE: invention relates to moulding articles from composite materials. Heat-resistant matrix has inside one or several layers of electrically conducting material, connected to an electric power source, wherein electroconductive elements are also included in stiffness ribs of matrix.EFFECT: higher strength of matrix, as well as preventing its warpage during heating.1 cl
ethod of radial forging hexagonal hollow profiles // 2607108
FIELD: metal processing.SUBSTANCE: invention relates to metal forming and can be used in radial forging of hexagonal hollow profiles. Round hollow workpiece is subjected to reduction simultaneously with two mutually perpendicular pairs of strikers in not less than three passes. Strikers of one pair have smooth working surface. Strikers of second pair have cutout grooves with surfaces inclined to each other at an angle of 120°. Working surfaces of mutually perpendicular strikers are offset relative to each other along forging axis by a value exceeding length of working surface of striker. After each pass, workpiece is turned about forging axis through an angle which is a multiple of 60°, to change faces hexagonal hollow profile pressed by pairs of strikers.EFFECT: higher quality of hollow profiles.1 cl, 8 dwg, 1 ex
Lever element and its manufacturing method // 2607042
FIELD: transport.SUBSTANCE: group of inventions relates to vehicles lever element. Lever element is formed by acting on workpiece, which is flat plate passing in plane, formed by first and second direction, orthogonal to first direction, step-by-step forming process for joining and connection of two side surfaces in second direction. Lever has cylindrical part, console parts and flanges. Cylindrical part passes along first direction and has cylindrical shape. Console parts are located on both ends in cylindrical part first direction and have outer diameter, expanding outward in first direction. Two flanges are located opposite to each other along second direction in each console part and have through holes in places facing each other along second direction. Through hole passes in direction crossing said two side surfaces, which are mated and connected.EFFECT: possibility to perform lever element without abrupt change in cross section and simplification of manufacturing.12 cl, 31 dwg
ethod and device for pipe internal dimensions optical measurement // 2606901
FIELD: measurement technology.SUBSTANCE: invention relates to rolled pipe internal dimensions optical measurement methods. Method involves sensor device (9) horizontal movement inside pipe (3), having laser tracker (12) by means of which laser beam (10) is emitted inside pipe (3). Sensor device (9) is horizontally moved inside pipe (3). Laser tracker (12) is installed fixedly and linearly opposite to sensor device (9) path end. At that, laser tracker (12) tracks sensor device (9) current position inside pipe (3) by means of laser beam (13) and records sensor device (9) deviations from pipe inner surface. At that, laser beam (13) is reflected from reflector (14) installed on sensor device (9) back to laser tracker (12), and performing continuous recording of sensor device (9) distance from laser tracker (12), by means of which three-dimensional measurement is performed and presentation of pipe (3) internal outline and/or weld on optical images recording device.EFFECT: technical result consists in simplification of rolled pipes internal dimensions measurement method.4 cl, 1 dwg
ethod of axisymmetric articles sectional forming and tool set for its implementation // 2606818
FIELD: machine building.SUBSTANCE: invention relates to field of hot forming. Heated to forging temperature cylindrical billet is placed in female die with concave working surface and performing article rough forming. At that, producing workpiece annular zone having thickness making 1.1–1.3 of end product wall thickness, and depth making 0.5–0.8 of end product depth. For rough forming acceleration male die is used with working surface, which shape repeats female die concave working surface shape. In acceleration male lower part there is curved recess. Recess height makes 0.1–0.5 of end product thickness. Then, article finish forming is performed by means of gauging male die. Gauging male die working surface shape repeats female die concave working surface shape. Conveying reciprocating movement to acceleration and gauging male dies. At that, performing female die with billet or acceleration and gauging male dies turning about vertical axis. Result is providing increase in finished products quality and reduction of variation in their walls thickness.EFFECT: invention can be used in machine building for production of axially symmetric products like disc, cover, bottom.7 cl, 4 dwg
Winding device // 2606686
FIELD: manufacturing technology.SUBSTANCE: invention relates to winding devices for winding wire around round template periphery and unfolding wire in columns and rows arrangement to form bead ring. Roller for pressing wire located on template periphery, is placed on device frame and is movable along wire columns and in direction along wire rows. Annular cam has cam surfaces and is supported by camshaft, which rotates synchronously with template rotation. Cam follower interacts with cam surfaces of cam and moves apiece with roller along wire columns and in direction along wire rows. Cam surfaces are acting to move roller along wire columns.EFFECT: enabling reliable wire winding.4 cl, 6 dwg
ethod for thermomechanical treatment of cast (γ+α2)-intermetallic alloys based on titanium aluminide γ-tial // 2606685
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, specifically to metal forming and can be used for production from said materials of workpieces, semi-finished products and articles with a specified structure, used in aerospace and automobile equipment. Method for thermomechanical treatment of workpieces from cast (γ+α2)-intermetallic alloys based on γ-TiAl involves heating and deformation. Prior to heating and deformation workpiece is subjected to annealing at temperature within range of Tα-100 °C to Tα+100 °C for at least 10 minutes, where Tα is temperature of α↔γ transformation. Method then includes cooling workpiece at a rate of 5–100 °C/s to room temperature, heating is performed in (γ+α2)-phase region to temperature which is 5–200 °C below temperature of eutectoid transformation and deformation under isothermal conditions at a rate of deformation of 10-1-10-4 C-1 and deformation degree e not less than 0.7, followed by cooling workpiece at a rate of 5–100 °C/s to room temperature.EFFECT: reduced flow stress at deformation, providing a fine-grained structure.1 cl, 5 dwg, 11 ex
ethod and forming tool for hot forming and press hardening galvanized workpieces of sheet steel (versions) // 2606359
FIELD: metal processing.SUBSTANCE: invention relates to metal forming, in particular, to a method for hot forming and press hardening plate-shaped workpieces of galvanized sheet steel. workpiece is heated to a temperature above austenitisation temperature and is then formed and quenched in a cooled forming tool having a punch and a female mold. Female mold used is coated in its drawing edge region with material in a material-uniting manner, having a thermal conductivity lower than thermal conductivity of portion of the female mold adjacent to drawing edge region, and comes into contact with workpiece. Surface of coating deposited in edge region facing workpiece has a dimension extending along drawing edge, value of which exceeds positive radius of drawing die.EFFECT: reduced probability of crack formation in workpieces.20 cl
ethod for production of hot-rolled thick sheets from low-alloy steel for nuclear and power engineering // 2606357
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy and can be used for making large-size products of nuclear and power engineering. For production of rolled stock with thickness from 80 to 150 mm with guarantee of standard properties after normalization with tempering of continuously cast workpieces with thickness of not less than 315 mm, austenisation of workpieces is carried out at a temperature of 1,200–1,215 °C, rough rolling is started at a temperature not lower than 950 °C and is performed to roll thickness not less than 1.3 thickness of finished sheet with relative reduction per pass of not less than 10 %, finish rolling is started at temperature of 115±25 °C above point of Ar3 and ends at 5–15 °C above temperature of beginning of finish rolling, then sheets are subjected to slow cooling in air in a stack. Continuous cast workpieces are made from steel containing, wt%: 0.09–0.12 C; 0.70–0.80 Si; 1.55–1.70 Mn; 0.20–0.30 Cr; 0.20–0.30 Ni; Cu ≤ 0.10; 0.015–0.030 Ti; N ≤ 0.008; 0.02–0,05 Al; S ≤ 0.002; P ≤ 0.010; Fe and impurities – balance.EFFECT: structure of finished sheet is represented by ferrite and sorbite-like pearlite in volume ratio of not less than 30 % and is characterised by high homogeneity, wherein grains, different from prevailing number more than 1 occupy an area of not more than 10 %.1 cl, 4 tbl
ethod of shells rotary drawing from pipe blanks // 2606132
FIELD: metal processing.SUBSTANCE: invention relates to metal forming, particularly, to methods of rotary drawing on mandrels. Pipe blank is placed on mandrel with gap between pipe blank inner surface and mandrel outer surface and deformed by clamping elements revolving pipe blank mounted on mandrel. Deformation is terminated at distance from blank end of not less than its wall thickness and achieving rolled part length determined taking into account of optimal combination of geometric characteristics of pipe blank and finished product with torque value on mandrel and pipe blank material strain hardening.EFFECT: improved quality of shells and increased stability of deformation process.1 cl, 1 dwg
Roller centering device // 2606104
FIELD: metal processing.SUBSTANCE: invention relates to metal forming. Roller centering device comprises bed 1, wherein at the angle of 120° relative to each other there are three rollers 2. Rollers 2 through their rotation axes 3 are mounted in cases 4. Cases 4 are connected with rods 5 of power cylinders 6 arranged in bed 1. Power cylinders 6 are used as drives of synchronous movement of rollers 2 with cases 4 to the centering axis and therefrom. Each of the cases is equipped with a pair of torsion springs 7 in the inversed manner installed on axes of their rotation, herewith one end of each spring rests on the case, the other end – on the bed.EFFECT: increased service life of the centering devices rollers and improved quality of centered rolled and forged pieces are ensured by the fact that each of the cases is arranged able to turn about the axis aligned with the direction of its movement and shifted from the plane of the roller rotation axis parallel to the direction of its movement.1 cl, 7 dwg

ethod of making long-length hollow articles // 2605875
FIELD: technological processes.SUBSTANCE: invention relates to metal forming and may be used when manufacturing articles like cases of hydraulic and pneumatic cylinders, crystallizers jackets. Initial billet is placed into a container on a thrust and installed in holes of the guide and the working bushings. Bushing are coaxially placed in the container to form a cavity between their ends. Provided is extending of part of the initial billet at the end intended for shaping above the working bushing end by two diameters of the billet. Said end of the initial billet is placed in the hole of the guide bushing. Then the extending part of the initial billet under action of the male die at fixed working bushing is set and subjected to free piercing. After that the working bushing is unsecured and moved along the billet axis synchronously with the male die movement. Herewith metal of the initial billet released from the working bushing is subjected to swaging and piercing till formation of a bridge between the ends of the male die and the thrust. Produced article is removed from the container under action of the working bushing.EFFECT: as the result provided is reduction of deformation forces and the article wall thickness deviation and increase of its length in one transfer, as well as obtaining a fine-grained structure of the article metal.1 cl, 1 dwg

Reversing rolling mill and method of its operation // 2605740
FIELD: technological processes.SUBSTANCE: invention relates to rolling. Disclosed is method of rolled material lubricating in the reverse stand of rolling mill, containing at least one reversing stand (2) for rolling of rolled material (5), wherein rolled material (5) due to the sequence of passes passed with varying direction (7) of movement through at least one reversing stand (2) and after each pass is wound by acting as takeup drive (31, 41) of reversible coiler (3, 4). Before winding on takeup drive (31, 41) of rolled material (5) rolled material is oiled (5) by means of device (6) for application of oil for rolled material, which is located between at least one reverse roll mill (2) and takeup drive (31, 41). At that, on rolled material (5) is applied only oil (9) for rolled material without water as carrier medium, so that lubricating action is achieved only by oil (9) for rolled material applied before winding.EFFECT: technical result consists in maximum uniform application of oil on rolled material with simultaneous reduction of oil consumption.10 cl, 3 dwg

ethod of bimetal wire producing // 2605736
FIELD: metallurgy.SUBSTANCE: invention can be used for production of bimetallic wire on steel base with sheaths from different metals, mainly non-ferrous. Steel core and copper shell in form of tape are preliminarily treated with electrolyte in anode process electro-hydrodynamical mode. Workpiece is assembled by core wrapping with shell. Connecting its edges. Obtained workpiece is heated to 750-850 °C in electrolytic plasma in anode process mode. Obtained workpiece is rolled.EFFECT: method allows to produce bimetallic wire with high quality of its constituent metals connection, with considerably smaller rolling forces provides strong connection of dissimilar metals, for example core steel and shell copper, wherein copper shell is not thinning and burr is not formed.1 cl, 1 dwg

ethod of helical springs hardening // 2605541
FIELD: machine building.SUBSTANCE: invention relates to machine building. To increase spring resilient properties stability and reduced duration of production cycle cylindrical springs strengthening method comprises spring winding with pitch exceeding pitch of finished spring, heat treatment, penetrant inspection, ends polishing, wheel blasting, spring external and internal surfaces predeformation and cold working and along turns to each other contact line in single operation or separately.EFFECT: invention can be used during helical compression springs hardening.3 cl, 1 dwg

System and method for dynamic localisation of defect detected in product // 2605407
FIELD: technological processes.SUBSTANCE: invention relates to dynamic localizing a defect in a defective product obtained by forging. System of localizing a defect has processing means for simulating the forging procedure using a numerical solution of equations to obtain a set of models for molding the article, input means for providing the said data processing means relative to the defect in the article, processing means for addition to the first model from the set a defect marker and visualization means for tracking the defect marker in time. Monitoring is carried out basing on the first marked model retrospectively or in prospect.EFFECT: result is the possibility to diagnose the defect distribution inside the article.10 cl, 6 dwg

Piercing mandrel and method of its making // 2605044
FIELD: machine building.SUBSTANCE: invention relates to mandrel, used in piercing mill, piercing and rolling workpiece. Piercing mandrel consists of housing and coating based on iron and iron oxide sprayed on housing surface, wherein sprayed coating contains the following, wt%: C 0.015-0.6, Si 0.05-0.5, Mn 0.1-1.0, Cu 0-0.3, iron, iron oxide and impurities - the rest, wherein iron oxide content in coating ranges from 55-80 vol%.EFFECT: higher efficiency of hollow tubular billets production by obtaining mandrels with high-quality coating.6 cl, 2 tbl, 3 dwg, 1 ex

Bearing plate smoothed by fluid medium // 2605027
FIELD: metallurgy.SUBSTANCE: invention relates to rolling production. Linear support assembly comprises stand rolling mill, linear support plate, having at least one hole, attached to rolling mill bed, main plate, having at least one hole, threaded fastener, passing through at least one hole of main board, and attaching main plate and linear support plate to rolling mill bed, wherein main plate supports linear support plate in rolling mill bed.EFFECT: higher reliability and simplified operation of support assembly is ensured by fact that it has sealing structure located between support plate and main plate, sealing structure therein is adapted to seal volume formed between linear support plate and main plate, and fluid medium intended for injection into said volume by means of at least one port for injection, fluid medium therein is made in form of hardening rubber material with adjustable alignment between linear support plate and main plate.14 cl, 10 dwg

Blank support device at screw-rolling mill // 2605013
FIELD: pipes.SUBSTANCE: invention relates to hollow shapes helical rolling and can be used in production of pipes both from carbon, and special steels and alloys. Device includes support washer and hydraulic cylinder with piston and rod, providing possibility of support washer translational movement. Prevention of support mechanism breakage or distortion, elimination of blank rear end displacement in radial direction and reducing power consumption is enabled due to, that support washer is made in form of sleeve fixed on rod end with possibility to install blank rear end inside sleeve, rod is made hollow with spiral finning of its inner surface, piston outer surface is made with spiral finning, which pitch corresponds to pitch of rod inner surface finning, wherein piston is arranged inside rod with its ribs engagement with edges with rod ribs and possibility of translational movement along guides, eliminating possibility of rod rotation.EFFECT: production of pipes.1 cl, 1 dwg

ethod of forming parts from metals and alloys and press therefor // 2605011
FIELD: metal processing.SUBSTANCE: invention relates to metal forming and may be used for performing process operations of forming with an elastic male die in making asymmetric complex-shape parts with thickness of 0.01-0.3 mm. Workpiece is exposed to static load to obtain relative deformation, of 15-35 %. Workpiece is then loaded with magnetic-pulse pressure. Processing is carried out at a press, which comprises fixed and movable plate and magnetic-pulse hammer. Hammer is installed on fixed plate and consists of an inductor with a pusher and a container located on pusher, to accommodate elastic die, template and base. Movable plate is configured for pressing container in an assembly to magnetic-pulse hammer and is connected with vertical guides, which can be placed in holes in fixed plate.EFFECT: result is increased accuracy of pressed part.4 cl, 2 dwg, 1 ex

ethod of valve-type articles production // 2604548
FIELD: metal processing.SUBSTANCE: invention relates to metal forming and can be used in producing of valve type rod products. Cut from bar billet is installed on female die in movable hub hole, arranged in die housing. Initially between female die and hub working surfaces cavity is formed, which height is not exceeding two billet diameters. Then, billet is extruded under male die action with fixed hub. At that, extrusion is carried out simultaneously into female die aperture and into said cavity. Then, under hub and male die action valve plate and stem are simultaneously formed.EFFECT: result is higher efficiency of production and improved strength and operational properties of finished products.1 cl, 1 dwg

Support assembly // 2604545
FIELD: metallurgy.SUBSTANCE: invention relates to support assembly (100) of a forming roll for use in metallurgy. Assembly contains a roll with body (11) and two journals (10) and at least one bushing (20) to arrange without a crank or a gap one of journals (10). To improve bearing capacity of the support assembly without increasing its structural or mounting size, in the unloaded state between bushing (20) and journal (10) an enveloping cavity is formed limited with a concavity rotationally-symmetric in the plane of the longitudinal section of roll assembly (100) and made on side surface (13) of journal (10) and/or inner side surface (21) of bushing (20).EFFECT: increasing bearing capacity of the support assembly.7 cl, 4 dwg

Expander head for expansion tools and expander tool equipped with this head // 2604373
FIELD: tools.SUBSTANCE: present invention concerns expander head (1) for expansion tools for hollow billets, in particular for plastic pipe ends and multilayer composite pipes. Head includes a screwed cap (2) equipped with directed radially inside guide flange, and set in the form of sectors of spacer blocks (4). Each block by sector inner flange is arranged with possibility of radial movement in screwed cap (2). Set of sector-shaped spacer blocks (4) moves between closed state and expanding state. In closed state, the envelope of the outer walls of the set of spacer blocks (4) formes approximately cylindrical side surface. Each spacer block (4) has at least one groove (8), propagating in the direction of the longitudinal axis of the spacer blocks (4), so that area of outer walls of the set of spacer blocks (4) in closed state of expander head (1) corresponds to 25 % to 75 % of the area of envelope of the outer walls of the set of spacer blocks. Besides, the present invention relates to expansion tool for hollow billets, which includes the proposed expander head (1).EFFECT: technical result is reduction of force at expansion of hollow billets.13 cl, 9 dwg

Edging head device and method // 2604273
FIELD: technological processes.SUBSTANCE: invention relates to metal forming, specifically to edging head for article cladding with sheet metal. Edging head comprises double deflecting spring elements, providing resistance force when pressing on outer connecting edge, or performs edging operation by tension on inner connecting edge. There are also quick connection devices for selective connection of edging wheels and other forming devices to head and monitoring and measuring device for measuring of resistance force relative position, applied to forming element by deflecting elements.EFFECT: broader technological capabilities.17 cl, 10 dwg
Hot metal sheet forming or stamping tool with cr-si-n coatings // 2604158
FIELD: metallurgy.SUBSTANCE: invention relates to tool for hot forming steel sheet with AlSi coating, having a CrxSiyNz coating, where x: 40-69 wt%, y: 1-20 wt% and z: 30-40 at%, as well as to use of said tool as a tool for hot forming a steel sheet with AlSi coating.EFFECT: tool is provided with coating, having sufficient abrasive wear resistance, sufficient adhesion wear resistance and sufficient thermal stability, wherein coating improves protection against friction corrosion, observed on AlSi coated steel sheets after hot forming of metal sheets, compared to coatings used in present time.6 cl

Tram grooved rails rolling method and final four-roll gage for tram grooved rails rolling // 2604076
FIELD: technological processes.SUBSTANCE: invention relates to tram groove rails rolling production. Method involves process workpiece cobbing in gage formed by two horizontal rollers and two vertical rollers, one of which is smooth, and other is split, and bottom and head tread area formation to form groove. Elimination of axial forces effect on horizontal rolls during rolling is ensured by that, formation of groove on head is performed in one pass by gauge made with inclination towards head at angle of 8° and with split vertical roll, which diameter is in 1.8 times less than smooth vertical roll diameter, wherein process workpiece cobbing is performed with drawings equality by all profile elements and with cobbing value by bottom outer surface of 4 mm. Finishing four-roll gage is formed by rolls with four support cones between them and is made inclined towards head at angle of 8°, wherein split vertical roll diameter in 1.8 times less than smooth vertical roll diameter.EFFECT: disclosed is grooved tram rails rolling production method.2 cl, 2 dwg

ethod of producing nanostructured rods of round section from titanium alloy vt22 // 2604075
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, specifically to thermomechanical treatment of titanium alloys, and can be used for producing high-strength nanostructured rods of round section from titanium alloy VT22. Method comprises heating a workpiece to temperature of 850 °C, deformation of workpiece by three-roll transverse-helical rolling at 850-750 °C with stepwise decrease of temperature of workpiece at each next pass with direct quenching with rolling after every pass. Degree of true logarithmic deformation at every pass is 0.21-0.54, and total true logarithmic deformation is 1.2. After transverse-helical rolling obtained rod is subjected to ageing at temperature of 420-550 °C for 5 or 10 hours.EFFECT: obtaining nanostructured rods of round section from titanium alloy VT22 with improved mechanical properties.4 cl, 4 dwg, 1 tbl, 6 ex

ethod of blanks cutting for large-sized panels forging from roll of thin-sheet low-carbon steel (versions) // 2603760
FIELD: technological processes.SUBSTANCE: invention relates to pressure metal treatment and can be used during production of large-sized panels from sheet material by forging. First workpiece is cut after supply of sheet material roll on the step for each press stroke through the first and second die blades. Cutting by first curve is performed by first blade, and by second blade is along second curve from top to bottom side of the roll. Lower parts of first and second curves are plotted, first, as symmetric and mirror reflection of upper part of said first and second curves relative to vertical axes, passing through centers of those curves, and then, as symmetric and mirror reflection relative to roll horizontal axis of symmetry. At the same time, second workpiece is cut from roll by second die blade.EFFECT: result is higher resistance of used tooling and increase in material use factor.4 cl, 4 dwg

Continuous action plant for tapes casting and rolling // 2603419
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy and may be used for rolling at combination mill. Plant comprises casting unit and subsequent rolling unit (4). Casting unit comprises teeming ladle with molten metal, horizontal casting chute with pouring nozzle in outlet area and primary cooling zone with two rollers and rotary cooled casting conveyor (1). Rolling unit (4) comprises at least two drive rollers. Between pouring conveyor and rolling unit drive unit (3, 3′, 3′′) is installed to drive belt (5) containing at least two drive rollers. Drive unit (3, 3′, 3′′) is installed eccentrically with possibility of rotation. Drive unit (3, 3′, 3′′) rollers are made with possibility of alternate lowering on belt in the direction of casting and effecting it with various pressing force during casting and rolling processes.EFFECT: enabled cast band tension adjustment and elimination of cracks in it.10 cl, 4 dwg

ethod of thermomechanical processing of semi-finished products from two-phase (α+β) titanium alloys // 2603416
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, in particular, to thermomechanical processing of semi-finished products from two-phase (α+β)-titanium alloys, and can be used in machine building and aircraft engineering. Method of thermomechanical processing of semi-finished products from two-phase (α+β)-titanium alloys involves hot forging in two or more passes with deformation degree of 40-60 % in each pass, calibration at 800-840 °C at cooling rate of 7-20 °C/s, with deformation degree of 3-10 % and ageing. Ageing is carried out in two stages: at first at temperature of up to 400 °C, and at second at temperature of up to 600 °C. Increasing parts service life and reliability.EFFECT: increasing impact strength characteristics, specimen with crack destruction specific work at impact bending and endurance limit.1 cl, 1 tbl, 3 ex

ethod of forming thin-walled axially symmetric conical shape parts // 2603410
FIELD: metal processing.SUBSTANCE: invention relates to die stamping, in particular, to shaping of thin-walled axially symmetric shells, and can be used for production of large-size thin-walled truncated cone-shaped parts at dual-action presses. Working pressure is applied to billet by cylindrical shaped elastic male die. At that, additional reactive friction forces are created by means of elastic cone, which surface corresponds to female die working surface and which is arranged in female die coaxially with elastic male die at billet opposite side.EFFECT: higher quality of shells due to its wall reduced thickness. 1 cl, 1 dwg

Forming roll support assembly // 2603403
FIELD: metallurgy.SUBSTANCE: invention relates to support assemblies (100) of rolls to be used in metallurgy. Unit contains roll with barrel (11) of roll and two trunnions (10) of roll and at least one trunnion bushing (20) for installation without possibility of rotation at least one of journals (10) of roll. Between trunnion (10) of roll and trunnion bushing (20) there is gripping element (23), which acts as joint with geometrical closure without possibility of rotation. Increasing carrying capacity of support roller, without increasing its structural or mounting dimensions, ease of mounting is ensured by fact that trunnion (10) of roll is installed in trunnion bushing (20) with radial clearance, as a result, in unloaded state due to radial gap is formed annular space (12) between trunnion (10) of roll and trunnion bushing (20).EFFECT: in order to increase empty space (12), journal (10) of roll or inner working surface (21) of trunnion bushing (20) are made with concave circuit (40) or profile.7 cl, 3 dwg

ethod of detecting preceding feature and apparatus for detecting preceding feature jump and method of producing cold pipe using the method of detecting preceding feature // 2603398
FIELD: production of fittings.SUBSTANCE: invention relates to drawing pipes in cold state. Method involves a step of measuring the force applied to the rod to hold the mandrel in the direction of drawing and the stage of detection of preceding feature jump motion at the stage before the onset of discontinuous movement based on measuring the force values obtained at the stage of force measuring. At that stage of detection of the preceding feature includes a step of frequency analysis of values for measuring the force, obtained at the stage of changing forces in the specified frequency band, and a step of estimating the onset of the preceding feature jump motion when the peak intensity of the frequency spectrum, obtained by frequency analysis, exceeds preset reference value.EFFECT: increase of quality of pipe.3 cl, 6 dwg

Wall plug and a pressure die casting machine for making dowel of wall plug // 2603313
FIELD: tools.SUBSTANCE: present invention relates to an expansion wall plug which includes a dowel having a neck section starting from the rear end of the dowel, as well as an expansion section that adjoins the neck section if shifted towards the front end of the dowel in the axial direction, and a expansion channel which passes through the neck section and expansion section, wherein the expansion section of the dowel can be expanded in the radial direction (increase in its diameter) by adding an expanding element into the expansion channel in order to fasten the wall plug in a bore hole, and the expansion channel on the expansion section is formed by punctures, which start on the side surface of the dowel and open into in the inner space of the dowel. According to the invention the neck of the dowel has a slot passing outside into the spacer channel that extends from the expansion section to the rear end of the dowel and is open in the direction of the rear end of the dowel. Also, the invention also relates to a pressure die casting machine to produce dowels for expansion wall plugs according to the invention.EFFECT: technical effect of the expansion wall plug according to the invention it is especially simple to manufacture considering its high reliability and good loading characteristics.5 cl, 4 dwg

ethod of extrusion parts such as glasses and device for its implementation // 2602936
FIELD: metal processing.SUBSTANCE: invention refers to metal forming and can be used for production of parts like deep cylindrical sleeves with conical bottom part. Cylindrical billet, diameter of which is equal to outer diameter of the bottom part of the barrel, is deformed by moving punch and cavities of the matrix through the gap between surfaces of conical sections. Workpiece is exposed to a movable pusher. Upon that punch and matrix are fixed with observance of the specified conditions. At final stage of deformation metal displacement is carried out through a gap which width provides specified thickness of wall of the conical part of shell. Punch-in the device is fixed, and the matrix and pusher are independent from each other's movements. Matrix can be fixed relative to punch.EFFECT: result is reduction of power consumption and higher quality.2 cl, 4 dwg, 1 tbl, 1 ex
Lubricant washer for articles pressing and method of molding with application of washer // 2602927
FIELD: technological processes.SUBSTANCE: invention relates to hot pressing. Articles pressing method consists in supply into press container of workpiece heated to pressing start temperature, installation of female die with lubricating washer on it and extrusion of workpiece metal by extrusion ram with preset rate into female die opening. Reduced pressing force, reduced female die wear and higher quality of product external surface is ensured due to that lubricating washer is used in form of plate with central opening, which consists of at least two layers. Washer layers are made of lubricant materials with different viscosity of melts at temperature of pressing beginning, providing continuous supply of lubricant on product and female die contact surface.EFFECT: invention can be used in production of hollow shapes from special steels and alloys.1 cl

Device for replacement of pulling rollers driven rolling mill // 2602918
FIELD: metallurgy.SUBSTANCE: invention relates to rolling production. Hot rolling mill comprises sections of hot rolling, at least one section of pulling device and at least one section of winding. Near section (23) of pulling device and/or section (24) of winding looking from hot rolling in direction of winding section there is at least one section (27) of pulling device rollers accumulation on the other side of the winding section in continuation of the longitudinal axis of the mill for hot rolling and at least one section (28) for pulling device rollers preparation. There is also at least one movable, at least between the section of pulling device and the section of pulling device rollers preparation and section of pulling device rollers accumulation and optionally sections of hot rolling, manipulator (29).EFFECT: for replacement of rollers they are removed from the pulling device, transported to sections of storage and/or preparation, folded and replaced with other.6 cl, 8 dwg

Plate heat exchanger // 2602693
FIELD: heat engineering.SUBSTANCE: invention can be used for producing a permanently joined plate heat exchanger (1). Heat exchanger plates, having a solidus temperature above 1,100 °C, is provided beside each other to form plate package (3). Each heat exchanger plate comprises heat transfer area (10) and edge area (11), comprising bent edges which extend around the heat transfer area. Heat exchanger area (10) comprises a corrugation of elevations and depressions. On at least part of first convex surface (16) of a first plate, the melting depressant composition comprising a melting depressant component that comprises at least 25 wt% of boron and silicon. Plates are stacked into a plate package bringing second concave surface (17) into contact with the melting depressant composition on first convex surface of the first plate. Plates are heated to a temperature above 1,100 °C for melting the surface layer of the first convex surface of the first plate together with the melting depressant component and for forming a molten metal layer at the contact points between the first plate and the seconde plate. After solidification of said layer, joint is formed at contact points between plates and such that the bent edges form a tight fit between the bent edges of the plates.EFFECT: invention provides tight joint between heat exchanger plates.33 cl, 10 dwg, 15 tbl

ethod of radial forging // 2602586
FIELD: metal processing.SUBSTANCE: invention relates to metal forming. Method of cyclic multipass radial forging includes the period of radial forging of blank by hammers at its displacement by feeding manipulator in strikers and period of radial forging at blank displacement by pulling manipulator from strikers. Each passage consists of process of obtaining on blank the cone of deformation, established process of forging and process forging until of cone of deformation. Processes is performed cyclically at free end of the blank. Each cycle consists of feed of blank and reduction of it by strikers. In each cycle of the established process of forging, except the first, the speed of feeding manipulator is installed in λ times less than the speed of pulling manipulator, where λ - the ratio of cross-sectional areas at inlet and outlet from strikers.EFFECT: as a result provided improvement of quality of received blanks, performance improvement of process of radial forging and increase of reliability of operation of radial forging machine.1 cl, 6 dwg, 1 ex
ethod of making thin strips of difficult-to-form aluminium-lithium alloys // 2602583
FIELD: technological processes.SUBSTANCE: invention relates to metal forming, particularly to production of thin sheets of difficult-to-form aluminium alloys, including aluminium-lithium alloys, and can be used in production of casing sheets for the aerospace industry and ship building. At the workpiece hot rolling up to thickness of 5-7 mm, after softening annealing on the workpiece side edges, welding is performed in the medium of strips inert gases of high-ductility aluminium alloy with thickness equal to thickness of the main rolling. At that, the B width of welded strips is selected in the range of: B=(7-10)H; where H is thickness of hot-rolled strip. After rolling completion and obtaining of the sheet of the required thickness these strips are cut along the separation zones of alloys.EFFECT: method for production of thin sheets from difficult-to-form aluminium alloys is suggested.1 cl

ethod of combined finishing cut of gear parts // 2602576
FIELD: machine building.SUBSTANCE: invention relates to the combined finishing cut of gear wheels. Processed wheel is located in relation to a flat generating wheel with hypoid offset. Out-of-pole engagement of the flat generating wheel with the processed wheel is performed. Productive wheel with cutting edges on its side face is used. Gear wheel rolling is performed by the flat generating wheel, creating the flat geartrain with the processed one. Allowance is cut by transverse and longitudinal sliding of the gears side faces of the flat generating wheel relative to the gears side faces of the processed wheel.EFFECT: productivity and accuracy of finishing is increased as a result.1 cl, 8 dwg

Device and method of spiral curvilinear air duct manufacturing // 2602309
FIELD: metal processing.SUBSTANCE: invention relates to metal forming and may be used for production of helical curvilinear air duct. Device includes first supply shafts for metal sheet pulling through, copying mechanism, made with possibility of pulled metal sheet cutting from first supply shafts in longitudinal direction into three strips along straight line or wavy line by preset path, wherein two side strips, having by one straight edge are rolled into rolls for subsequent processing, second supply shafts for pulling through of third, central, strip into edge forming device with formation of connecting locks on side edges with subsequent twisting of strip into spiral shape. Devices are equipped with seaming rollers for locking connections compacting, which have possibility to move across metal strip travel and cutoff device for separation of produced air duct from metal strip. Device versions allow to produce curvilinear air duct from precut by specified path strip.EFFECT: expanding performances of devices used for producing spiral curvilinear air duct by described above method.4 cl, 14 dwg

Rolling mill, and device and method for determining rolling or guiding gap of roll stands or guide stands in multi-stand rolling mill // 2602216
FIELD: technological processes.SUBSTANCE: invention relates to rolling. Disclosed is a method for determining rolling or guiding gap of roll stands or guide stands in a multi-stand rolling mill, wherein a comparison scale is positioned on at least one stand, preferably at first and last stand. Prior to installation of comparison scale on side of input or output stand a camera is installed, and on other input or output side - transmitter of reference measurement apparatus, a reference sensor and/or reference scale, which enables to avoid camera setup.EFFECT: improvement of measurement accuracy.6 cl, 5 dwg

ethod of hot-deformed articles producing // 2602212
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, namely, to production of hot-deformed articles and can be used in external workpiece surface processing prior to different types of deformation. Method of hot-deformed steel article production comprises workpiece heating, treatment of moving workpiece heated external surface with protective compound and its deformation by external tool, wherein workpiece is heated to temperature of 500-1,400 °C, outer surface treatment is performed by supply of fusible deoxidating product mixture based on alkali phosphates and transport agent under overpressure, and deoxidating product supply intensity P is defined from claimed relationship.EFFECT: invention provides working tool higher resistance and ready product external surface quality by preventing formation of scale.4 cl, 1 ex, 2 tbl

Winding machine // 2602211
FIELD: machine building.SUBSTANCE: invention relates to formation of bead rings by wire winding. Winding machine includes first rotating body, rotated by rotary shaft, second rotating body, rotated around the same axis and at the same rate as first rotating body and drive element for attachment and detachment of first and second bodies in relation to each other. Outer circumferential surface of at least one of first and second bodies in part, where first and second rotating bodies are attached, groove is made to form bead ring by wire winding. Pushing element of machine is intended for pushing of formed bead ring from groove inner space. Transfer plate is located between first and second rotating bodies, when first and second rotating bodies are in detached state to drag bead ring, pushed from groove by pushing element, by means of magnetism.EFFECT: providing easy detaching of bead ring from rotating body, simplifying machine design.3 cl, 9 dwg

ethod for production of hot-rolled stock for automobile wheels // 2602206
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy and can be used in production of hot-rolled and hot-rolled etched rolled product with thickness of 3.0-6.0 mm, for making discs and rims of wheels by cold forming. Method involves melting steel, furnace treatment, continuous casting, heating of slab for hot rolling, rolling in roughing and finishing continuous groups of stands of broad-strip mill, cooling a strip with water at collecting roller table with further coiling into roll.EFFECT: higher ductility and formability of rolled stock is ensured by specifying composition of steel, modes of rolling, heat treatment and reeling.4 cl, 4 tbl

ethod of manufacturing rails of low-temperature reliability // 2601847
FIELD: metallurgy.SUBSTANCE: invention relates to ferrous metallurgy, in particular. Rails are rolled at mill with universal mill tandem at heating temperature for rolling in range of 1,100 to 1,200 °C, finish rolling is performed at temperature of 850-950 °C, and accelerated and differentiated cooling at head and rail foot is performed by air or air with admixture of water from temperature 720-850 °C at a rate of 1.5-6.0 °C/s to temperature of ≤ 620 °C, where in each specific case cooling rate at head differs from cooling rate at bottom. Said steel contains following substances, wt%: carbon - 0.72-0.78 and optionally additionally: from 0.15 to 0.60 chromium, from 0.10 to 0.60 nickel, from 0.05 to 0.15 vanadium, from 0.007 to 0.020 nitrogen.EFFECT: obtaining rails of low-temperature reliability with perlite microstructure, having high level of impact strength and impact drop strength at negative temperatures, as well as required system of mechanical properties and low level of residual stresses.1 cl, 3 tbl

ethod of producing steel pipe // 2601844
FIELD: metallurgy; technological processes.SUBSTANCE: invention relates to metal forming and can be used for production of flexible steel pipe. Cylindrical shape is imparted to a flexible three-point sheet on width. Edges of non-expanded pipe are connected means of a welded seam. Expander pipe with segments for expansion of said pipe is introduced. Expander segments are pressed to all regions, without deformation as a result of three-point bending. Number of three-point bends is set depending on number of expander segments.EFFECT: providing a regular round pipe shape of pipe.1 cl, 2 tbl, 7 dwg

Device for rolling hollow articles on hydraulic press // 2601842
FIELD: metal processing.SUBSTANCE: invention relates to metal forming and can be used for rolling hollow products such as large-size rings and rings on hydraulic press. Device comprises a rolling-impression die rigidly mounted on press table, fixed on a moving beam press thrust and working tool. Tool is fixed on two sides in lower part of rods, which are made with holes. Between rods with eccentricity relative to vertical press axis there is an arbor for turning workpiece during rolling. Arbor is installed by end sections in holes of rods to enable rearrangement depending on inner diameter of rolled hollow workpiece.EFFECT: broader technical capabilities of device and higher reliability.1 cl, 2 dwg