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

B21            echanical metal-working without essentially removing material; punching metal(51158)
anufacture method of compressor blades from titanium alloy vt6 // 2629138
FIELD: metallurgy.SUBSTANCE: provide the hot gas moulding of the ingot with superplastic deformation at the temperatures from 870 up to 1000°C and the deformation rate 10-4c-1. Then using the ion-plasma condensation method, the optimally selected Ni-Ti-Cr-Y alloyage is deposited on the surface of the resulted blades. After this, the compressor finished blades heat treatment is provided at the temperature of 870 to 950°C.EFFECT: method provides high mechanical properties of compressor blades made from titanium alloy VT6, in particular the fatigue strength, the heat resistance, the fracture toughness.1 cl
Device for continuous pressing of metals and alloys // 2629134
FIELD: metallurgy.SUBSTANCE: device for continuous pressing contains two horizontal rolls with a smooth barrel, at which output the matrix is mounted. The matrix is made with three consecutive channels of equal cross section. The input and output channels are parallel to each other. The middle channel is located at an angle to the input and output channels in three planes. There are two vertical rolls made with grooves forming working calibre at the matrix output.EFFECT: increase the quality of the workpiece material produced in the result of pressing with a smaller number of passes without significant change of initial dimensions of the workpiece.4 dwg

achine foundation, method of moulding machine operation and moulding machine // 2628884
FIELD: machine engineering.SUBSTANCE: foundation of the moulding machine configured in the form of hydraulic press contains a foundation body and at least one unit for creating a prestress. The foundation body has at least one supporting surface and comprises a foundation slab and at least one foundation wall. Said wall passes in the axial direction from the foudation slab. The prestress unit provides resistance to the force applied to the foundation body by a moulding device of the moulding machine. Said unit comprises first elements for creating the prestress located outside the foundation body and at least two internal second elements. The second elements are at least partially embedded in the foundation body and located therein crossing each other.EFFECT: increasing stability and durability of the foundation.14 cl, 2 dwg
ethod of oil well tubing treatment // 2628803
FIELD: metallurgy.SUBSTANCE: invention refers to metallurgy, oil machine engineering and repair of subsurface equipment of oil wells, and can be applied for manufacturing and repair (restoration) of oil-well tubing. To increase operation life, efficient use period, bearing capacity of thread joints in onworn tubing, a workpiece is prepared out of onworn tubing with wall thickness deviation of 20-45 % of the rated value, tube workpiece ends are heated to 950-1300 °C for upsetting, the tube is fixated by a clamp, and each tube end is upset to a 60-350 mm length with a horizontal forging machine or hydraulic press with deformation rate of 20-70 %.EFFECT: enhanced operation life.4 cl, 1 tbl, 2 ex
Wire winding unit for producing multi-core springs // 2628724
FIELD: machine engineering.SUBSTANCE: wire winding unit comprises a bushing that is rotatable about a symmetry axis provided with guides for passing wires from its accumulators and installed before a mandrel for spring winding. The guides are in the form of rods, which one end of each is rotatably disposed in an opening of a corresponding shoe, and the free ends of the rods are conjugated with a head provided with a first annular groove made in a plane perpendicular to the rod rotation axis. Each shoe is rigidly fixed on the inner surface of the bushing so that the rod rotation axis is oriented at a sharp angle to the end plane of the bushing and projected beyond it to the mandrel. There are additional guides installed in the bushing cavity and formed as additional rods. One end of each rod is rotatably mounted in the opening of the corresponding additional shoe, and its free end is provided with a head formed with a second annular groove perpendicular to the rod rotation axis.EFFECT: increase in serviceability of the produced multi-core springs and stability of their parameters.5 cl, 6 dwg
Device for multicore springs manufacturing // 2628722
FIELD: machine engineering.SUBSTANCE: device contains wire accumulators, wire winding unit, spring winding mandrel, rotation mechanisms for the mandrel and the wire winding unit. The corresponding wire supply units with individual drives are located between the wire accumulators and the wire winding unit. The wire accumulators, the wire supply unit and the wire winding unit are arranged in series. The wire accumulators and one end of the wire supply unit are rigidly connected to the first support ring, and the second end of the wire supply unit and the connecting flange of the wire winding unit are rigidly connected to the second support ring. The support rings are rotatably mounted in support posts and at least one of them is provided with rotation mechanism. The wire accumulators are made with the possibility for eliminating unintentional unwinding of the wire. The wire supply unit is configured for tensioning the wire before it is fed to the wire winding unit and for controlling the amount of this tension.EFFECT: increase serviceability of the produced multicore springs and stability of their operating parameters, control tension level of wires and thereof adjustment possibility.7 cl, 13 dwg

Forming system of axisymmetric parts with elongated axis // 2628596
FIELD: metallurgy.SUBSTANCE: device contains two sliding blocks, the first of which is located on the same axis as the matrix. The second sliding block is placed perpendicular to the mentioned axis. The system contains the movable die, consisting of the outer die with the flange and the inner die. The outer sliding block has the possibility of alternating arrangement on the first sliding block opposite the matrix axis and on the second sliding block. The inner die moves in the outer die. The latter provides the cutting of the workpiece and forming of the axisymmetric part in the matrix together with the inner die. The matrix and the outer die are installed with the cavity formation between them with height not more than three diameters of the workpiece. There is the spring installed between the outer die flange end face and the matrix.EFFECT: increase of the forming efficiency and production tooling durability.1 dwg

ethod of press-formed product manufacture and device for forming by pressing // 2628595
FIELD: metallurgy.SUBSTANCE: invention relates to manufacture by forming products of a steel sheet having high tensile strength of a trough-shaped cross-sectional shape comprising a trough bottom, a ridge, vertical walls, and an outer continuous flanged edge. Forming by pressing is carried out in two stages. In the first step, after keeping by the first cushion the portion of part to be shaped as the bottom of tough element, the second cushion holds the end portion of parts to be shaped into ridges.EFFECT: folding in ridges and cracking on the outer continuous flanged edge are reduced.12 cl, 19 dwg, 4 ex

Device and method for edging using rollers // 2628591
FIELD: machine engineering.SUBSTANCE: preliminary edging of the flange part of an outer panel is done in the preliminary edging stamp. Then the final edging of the outer panel bent edges is performed by a roller in a tool unit. A retractable unit adjusts the outer panel position and elastically supports its flange part.EFFECT: improved quality of produced parts.6 cl, 12 dwg

Reversible plates of refiner with low energy consumption // 2628505
FIELD: machine engineering.SUBSTANCE: lignocellulosic material grinding system comprises a bi-directional segment of the rotor plate with the grinding region of the first rotor plate with at least one grinding zone in the first radial range of the distances between the inner and outer edges of the segment of the rotor plate and the bidirectional segment of the stator plate with the grinding region of the segment of the first stator plate with at least one grinding zone in the second radial range of distances between the inner and outer edges of the segments of the stator plate. The grinding zone of the segment of the first rotor and stator plates contains each series of alternating blades and grooves. The width of the grooves of the first rotor plate is at least 50% greater than the width of the grooves of the first stator plate. The segment of the rotor plate comprises a grinding zone of the second rotor plate in the third radial range of distances between the inner and outer edges of the segment of the rotor plate. The third radial range of distances is located closer to the outer edge of the segment of the rotor plate than the first radial range of distances. The segment of the stator plate also includes the grinding zone of the segment of the second stator plate in the fourth radial distance range between the inner and outer edges of the segment of the stator plate. The third and fourth radial ranges of distances overlap and the grinding region of the segment of the second rotor plate has at least one grinding zone, comprising a series of alternating blades and grooves where the grooves have a groove width of the second rotor plate and the grinding region of the segment of the second stator plate has, at least one grinding zone comprising a series of alternating blades and grooves, where the grooves have a groove width of the second stator plate. The width of the grooves of the second rotor plate is substantially equal to the width of the grooves of the second stator plate. The bi-directional assembly of the refiner plate for the refiner disk contains a rotor and stator plate, each of which has a patterned and reverse side. The figured sides of the rotor and stator plates are opposite to each other. Each of the rotor and stator plates comprises, in accordance with the above described segments, rotor and stator plates with grinding regions.EFFECT: grinding system and bi-directional assembly provide the possibility of changing the direction of rotation of the refiner plates while maintaining an acceptable wear time.26 cl, 8 dwg
anufacture method of thick-walled short-radius elbows // 2628444
FIELD: metallurgy.SUBSTANCE: provide the heating of the tube billet with the straight cut, the outer diameter, exceeding the outer diameter of the elbow, and the length exceeding the outer generating line length. The billet ovalization is carried out on the press upto the value of the oval outer diameter along the minor axis, equal to or not more than 2% of the elbow outer diameter. Then, provide the billet rotation into 90° and the moulding in the stamping die with the oval major axis orientation in the direction of the force action.EFFECT: uniform wall thickness along the elbow perimeter.3 dwg, 1 ex

ethod and device for compression moulding for shell-and-core element manufacturing of for vehicle body // 2628441
FIELD: automotive engineering.SUBSTANCE: in the first step, the moulded material is pressed against the punch by a pillow to raise the area corresponding to the formed flange at the ends of the groove element and the rib bottom in the direction opposite to the pressing direction. The end of the region to be moulded into the rib in the pressing direction is bent by the cushion, and at least a portion of the noted end is held. In this case, the intermediate article, in which the non-end zone in the region formed into the bottom of the grooved element is not retained, is moulded using a punch and a matrix.EFFECT: reduced formation of cracks at the edge of the rib flange and formation of folds at the base of the rib flange.17 cl, 14 dwg

anufacturing method of centerpost amplifier // 2628268
FIELD: metallurgy.SUBSTANCE: stamping is performed in two stages. In this case, the first intermediate moulded article is produced on the first stage, using the first stamping device for the drawing. The first stamping device contains the matrix die, the workpiece holder and the punch. On the second step of stamping by bending, the end product is produced from the intermediate moulded product. The second stamping device, containing the punch, the cushion and the die for pressing the first intermediate product onto the punch.EFFECT: buckles and cracks formation on the workpiece flanges is reduced.8 cl, 13 dwg
ethod for manufacturing bimetallic wire from different metals with cold drawing // 2628232
FIELD: metallurgy.SUBSTANCE: invention relates to the treatment of metals by pressure, in particular to the production of composite materials, and can be used to manufacture bimetallic wire of dissimilar metals. The zone, which consists of interconnected metals of the core and shell and carbon nanotubes, previously applied to at least one of the contact surfaces of the metals to be joined. Carbon nanotubes are applied during the preparation stage of the core contact surfaces and shell to the joint. Then, cold drawing is carried out to form a transition zone of the metals of the core, the shell and the mentioned nanotubes.EFFECT: increase uniformity of shell thickness over the length and cross-section.2 cl, 2 dwg

Hot-pressed thick-sheet steel, product moulded by stamping, and method of manufacturing products moulded by stamping // 2628184
FIELD: metallurgy.SUBSTANCE: steel contains, wt %: C: 0.15 to 0.5, Si: 0.2 to 3, Mn: 0.5 to 3, P: 0.05 or less (except 0), S: 0.05 or less (except 0), Al: 0.01 to 1, B: of 0.0002 to 0.01, N: 0.001 to 0.01%, Ti: in the amount equal to or greater than 3.4[N]0.01% and equal to or less than 3.4[N]0.1%, where [N] is the content (wt %) N, the rest are iron and unavoidable impurities. The average diameter of the equivalent circle of Ti-containing inclusions having an equivalent circle diameter of 30 nm or less among the Ti-containing inclusions contained in the steel sheet is 3 nm or more. The amount of Ti in the inclusions and the total amount of Ti in the steel satisfy the ratio: (the amount of Ti in the inclusions (wt %)-3.4[N])≥0.5×[(total amount of Ti (wt %))-3.4[N]], where [N] is the content (wt %) N in the steel. The share of ferrite in the metallographic microstructure is 30% or more.EFFECT: required balance between high strength and elasticity is provided.6 cl, 1 dwg, 16 tbl, 2 ex

Whole-rolled railway wheel // 2628025
FIELD: transportation.SUBSTANCE: railway wheel structure includes a rim, consisting of rolling surface, a rib and side surfaces, limited by the rim inner diameter from the outer and inner sides, a hub and a disc formed by the outer and inner surfaces. Central line of disc radial cross section is shifted along wheel rotational axis at section of its conjugation with hub relative to said central line at diskc conjugation with rim toward inner surface. And generating lines of disk outer and inner surfaces consist of main radius curves with opposite curvature interconjugated at disc central section while, on hub side and that of rim, with transition radius sections. The value of said displacement is from 0.075 to 0.150 of the width of the rim, the middle line of the disc radial section at its conjugation with the rim is located at a distance from 0.5 to 0.6 of the rim width of from its inner side surface.EFFECT: increase the strength of the wheel while reducing the weight.1 dwg

ethod of producing stamped elements and stamping device // 2627833
FIELD: metallurgy.SUBSTANCE: steel sheet blank stamping of high tensile strength is carried out using a stamping device comprising a stamp and a matrix. At the first step the top forming portion is carried out, formed to receive the edge line, and the formation of flanged outward edge is carried out by creating a state, in which the area located in, at least, the end portion in the longitudinal direction of the portion formed as the bottom groove of the blank, is separated from the stamp top forming the bottom groove, and at the second step approaching the upper stamp of the said area is carried out, forming the parts to obtain the edge lines and the formation completion of the bottom groove, the edge line, the vertical wall and outwardly flanged edge.EFFECT: technological possibilities are expanded and the quality of the stamped element is increased.7 cl, 9 dwg
ethod of body parts rolling out and punch for its implementation // 2627318
FIELD: metallurgy.SUBSTANCE: workpiece is placed on the pressing surface of the matrix die, the workpiece peripheral area is clamped by the braking thresholds. The further forming of the rolling out transition is carried out by the forming punch introduction into the central area of the workpiece with the metal flow braking by the die braking elements. In this process, the central area becomes convex during the clamping of the workpiece peripheral area and acquires the additional metal set, used to form the rolling out transition, with the uniform metal stretching. The additional metal set in the workpiece central area is formed by moving the metal part from the peripheral area at the time of the workpiece clamping by the braking threshold.EFFECT: stamped parts strength and stiffness increase, its front surfaces quality improvement.2 cl, 26 dwg

Swaged steel, cold-rolled steel sheet and method for the production of swaged steel // 2627313
FIELD: metallurgy.SUBSTANCE: steel contains, wt %: C - 0.030-0.150, Si - 0.010-1.00, Mn - 0.50- less than 1.50, P - 0.001-0.060, S - 0.001-0.010, N - 0.0005-0.0100, Al - 0.010-0.050 and optionally one or several of the following elements: B - 0.0005-0.0020, Mo - 0.01-0.50, Cr - 0.01-0.50, V - 0.001-0.100, Ti - 0.001-0.100, Nb - 0.001-0.050, Ni - 0.01-1.00, Cu - 0.01-1.00, Ca - 0.0005-0.0050, rare-earth metals - 0.0005-0.0050, iron and unavoidable impurities making the rest. The microstructure of the steel contains from 40% to 95% by the share of the ferrite area and from 5% to 60% by the share of martensite, and also, if necessary, one or more of the following phases: 10% or less perlite, 5% or less of residual austenite by volume fraction and less than 40% by the proportion of bainite area. The amount of the share of the ferrite area and the share of martensite is 60% or more.EFFECT: steel has high formability, high chemical conversion treatment properties and coating adhesion.20 cl, 8 dwg, 5 tbl

ethod for rail rolling // 2627140
FIELD: metallurgy.SUBSTANCE: method includes rolling in draft and final four-roll universal calibers with horizontal and vertical rolls, the latter of which are made with profile creeks and coils on the side of the profile head, and in the pre-final two-roll caliber of the open type. Rolling is carried out in a final four-roll caliber with a connector made on the side of the rail head between the rolls of the vertical roll and the ends of the horizontal rolls in the areas of the conjugation surfaces with the side surfaces of the rail head. The radius of the mentioned conjugations in the pre-final two-roll caliber is regulated by the mathematical dependence.EFFECT: increasing the profile accuracy and stabilising the rolling conditions.2 dwg

ethod of manufacturing complex large-sized fully moulded part from welded workpiece // 2627082
FIELD: metallurgy.SUBSTANCE: welded workpiece is produced from sheets, the weld is dressed, chipped, bent, drawn, cut, straightened, punched and flanged. In this case, sheets of the same nominal thickness and different material grades in at least two sheets corresponding to the least and the most stressed areas of the part are used. The sheets are welded along three lines (in one, two or three straight lines), where the sheet, strength, plasticity, fatigue and impact resistance of which exceed the said parameters of the sheets, corresponding to the least stressed part areas, correspond to the most stressed area.EFFECT: increased strength and rigidity of individual areas of the part.7 cl, 6 dwg
Production method of drill steel // 2627081
FIELD: metallurgy.SUBSTANCE: method includes the bar cutting into measured lengths, heating, piercing in the screw rolling mill, rolling of the sleeve into the crude tube at the short movable mandrel in the screw rolling mill, reducing in the screw rolling mill, pipe calibrating in the rolling mill, cooling. The reducing in the screw rolling mill is carried out with the internal diameter reduction upto 40%, then the tube is cooled, mechanically processed along the inner surface, until the defects are removed, and then it is heated again upto the temperature of 900…950°C and reduced with the reduction of cross-sectional area, the limiting value of which, excluding the formation of defects in the form of cracks, is regulated by mathematical dependence, and the calibration is carried out with the internal diameter decrease, the allowable value of which for each stand, which does not lead to defects in the form of buckles and notches, is regulated by the mathematical dependence as well.EFFECT: increase of the geometric dimensions accuracy at high quality of the tubes surface.1 ex

ethod of sheets rolling // 2627077
FIELD: metallurgy.SUBSTANCE: method involves the sheets deformation by the drive stationary rolls and idle moving rolls, which axes are mutually perpendicular. The sheets deformation is made by the drive stationary rolls, which axes are perpendicular to the rolling axis and at least one pair of idle moving rolls, mounted in the movable frame, reciprocating in the direction perpendicular to the sheet rolling. The movement of the deformable sheets in the rolling direction is carried out by the drive stationary rolls, and the deformation is carried out by the idle moving rolls in the direction perpendicular to the sheets rolling axis, at least per four-six cycles of its reciprocating movement.EFFECT: increase of the rolling sheets accuracy, reduction of its longitudinal and transverse variation in thickness.6 cl, 4 dwg

ethod of cylindrical parts parameters stabilization // 2626703
FIELD: machine engineering.SUBSTANCE: part is put into rotation and applied the external load to it, causing the plastic deformation in it. One end of the part is fixed in the chuck of the machine and the part is given the multi-cycle uniform rotation about its axis, the external load in the form of the bending moment is applied to the other end.EFFECT: geometric dimensions of the part are improved by eliminating the residual stresses along the axis of the part.1 dwg, 1 ex

Device for cylindrical parts parameters stabilization // 2626701
FIELD: machine engineering.SUBSTANCE: device contains the workhead drive and the device, that performs the part plastic alternating bending in the transverse direction. The part alternating bending device consists of the bushing with the opening for placing the part end. The bushing is mounted in the rolling bearing in the lever housing, fixed in the holder on the axis perpendicular to the bushing axis, and performing the bushing rotation around the axis of the holder under the action of the screw clamp force applied to it. The holder is mounted in the stationary housing with the ability to move freely in the direction perpendicular to the bushing rotation axis.EFFECT: improvement of the parts quality by eliminating the residual stresses along the axis of the part.2 dwg, 1 ex

Drilling-riveting machine for riveting of curvilinear panels // 2626520
FIELD: construction.SUBSTANCE: machine contains an upper power head, a support-leveling device for the panel, a control system and three distance-measuring sensors for measuring the distance to the panel surface. The distance-measuring sensorare are able to synchronously rotate by a given angle in a vertical plane passing through a series of riveting, by means of synchronous rotation mechanisms. A control unit for the mentioned mechanisms, a signal amplifier and a digital analogue transducer are provided in the machine. The distance-measuring sensors provide simultaneous measurement of the distance to the panel surface and the transfer of measured values via the digital analogue transducer, amplifier and control unit to the control system. The control unit is connected to the rotation mechanisms by a feedback interface to allow the distance-measuring sensors to rotate by a given angle.EFFECT: increased accuracy of the panel alignment relative to the axis of the power head during its positioning at the riveting pitch.2 dwg

Tools for manufacture of products by pressing with back of metal // 2626262
FIELD: metallurgy.SUBSTANCE: tool contains a container with a working sleeve, a matrix holder with a longitudinal groove mounted on one side of the sleeve and a composite matrix in the form of a pair of elements fixed on the matrix holder. The tool is equipped with a press washer and a direct action stamp that closes the container from the other side of the sleeve. An annular lining is installed in the bushing, which is interfaced with its inner surface and fixed to the matrix holder with closing of the edges of its longitudinal groove and forming a rectangular opening for passage of the pressed article. The elements of the composite matrix and the ring gasket are fixed to the matrix holder by means of fastening elements.EFFECT: expansion of technological capabilities of the tool and expansion of the nomenclature of the products.4 dwg

ethod of shaping bicurved sheet parts // 2626253
FIELD: technological processes.SUBSTANCE: when forming, the sheet preform is placed in a conical matrix and sequential local pressing is performed with a punch while simultaneously moving the blank or punch relative to each other with a predetermined pitch. In this case, there is a partial overlap of each previous spot of application of the punch over the surface of the workpiece, the value of which is not less than half its diameter. The radius of the spherical working surface of the punch is preliminarily determined taking into account the shell radius, the thickness of the billet sheet material and its mark using the calculated finite-element mathematical model based on the ANSYS system.EFFECT: quality of the resulting spherical surface of the shells is improved by eliminating the springing of the material.6 dwg

ethod of obtaining metallic bargains in shape of polygon from thin band // 2626252
FIELD: metallurgy.SUBSTANCE: cutting is carried out in two stages. In the first stage, preliminary incisions are made on the moving strip. In the second stage, by deforming the shear at the notches, the workpiece is separated from the strip. Two interlocking two-roll stands are used, the first of which carries out preliminary notches on the strip, and in the second one - a shift in the places of the notch.EFFECT: expanded technological capabilities.3 cl, 9 dwg, 2 ex

ethod of manufacturing steel axisimetric welding structure // 2626116
FIELD: metallurgy.SUBSTANCE: welded structure contains an end base, a central tubular element in the form of a thin-walled glass and a thin-walled shell with a thickened bottom. A central tubular element is formed from a circle of sheet steel by drawing in several transitions with intermediate recrystallization annealing. Further, it is dispensed to form a terminal thickening. Form the welded edges for welding the base and thin-walled shell. In this case, a thin-walled shell with a thickened bottom is obtained by extruding the bottom part from the cup and stretching with wall thinning for several transitions with intermediate recrystallization annealing, the end part of the shell is calibrated and the welded edge is formed by machining. The end base is made from a tube workpiece, welded to a tubular element and air tested.EFFECT: high dimensional accuracy and reliability of the welded vessel body are enhanced.6 cl, 8 dwg, 1 ex

etal barrel and method of its manufacture // 2625868
FIELD: metallurgy.SUBSTANCE: barrel has a cylindrical contour profile, at least with the bottom cover, hermetically connected to the cylindrical profile. The metal barrel comprises a combination of corrugations on the peripheral surface of the cylindrical shaped profile in the form of several corrugations united in at least one group. In this case, the corrugations have an identical shaped profile and a size with a radius of the apex 6 mm, equal to the radius of the cavity.EFFECT: mechanical strength of the barrel wall is improved.21 cl, 5 dwg, 2 tbl

Rolling mill roller guide // 2625517
FIELD: metallurgy.SUBSTANCE: device includes the input and output centering units, consisting of the guiding jaws, located on the support plates and the guides of the support plates, mounted on the common frame. The centering units contains the screw shaft with the left and right threads for synchronous movement of the support plates relative to the rolling axis to vary the throughput gauge, and the output centering unit is the safety mechanism for urgently increase of the throughput gauge in the event of the technological malfunction and the rolled product end face shape and size failure.EFFECT: reduction of the roller bending, increase of its retention accuracy on the mill axis, protection of the equipment from the consequences of the rolled product end face shape and size failure during the rolling process and the ability to pass the mill entire range of sizes without using the auxiliary tool.1 dwg
ethod of manufacturing a circular arch of composite section with thin cross-corrugatedted wall // 2625513
FIELD: metallurgy.SUBSTANCE: thin-sheet rectangular billet is profiled with symmetrical continuous transverse corrugations of a triangular, trapezoidal or sinusoidal profile along the entire length. Next, the resulting billet is joined by welding with a lower waist sheet along the contact line. Obtained T-bar is bent at a given radius relative to the lower belt with position fixation and is attached by welding to the free edge of corrugated wall of the upper waist sheet.EFFECT: improving the accuracy of arch manufacturing.4 dwg, 1 ex
ethod of manufacturing punched billets of close-loaded blades from a two-phase titanium alloy // 2625385
FIELD: metallurgy.SUBSTANCE: blade is pre-punched in two passes. At the first pass, blade airfoil is twisted by an angle of up to 20°. At the second pass, blade airfoil is twisted to an angle of 45°. Then, the final punching is performed on hydraulic press or a stamping hammer with blade airfoil turned up to an angle of 55°±10°. Then the bark is cut off, the final twist of the blade airfoil to the corner 90° is performed. Then corrections are made.EFFECT: obtaining higher strength characteristics and optimal structure of punched forgings.1 ex

ethod of thermomechanical processing of rods from biphase titanium alloys for producing low values of linear expansion thermal coefficient in rod axis direction // 2625376
FIELD: metallurgy.SUBSTANCE: method of thermomechanical processing of rods from biphase titanium alloys with a molybdenum equivalent of 3.3 to 22% includes hardening of the rod and its cold deforming. Before hardening, the rod is subjected to hot deformation at the temperature in the range of 500°C through Tpt-20°C with the axial texture β-phase <110> with a pole density of, at least, three. Hardening of the rod is carried out at temperatures ranging from 720°C to Tpt followed by a cold deformation along the axis of the rod at the temperature of not more than 300°C and with a relative elongation of 1 to 30%, where Tpt - the temperature of the polymorphic transformation of the alloy.EFFECT: alloy is characterized by a low thermal coefficient of linear expansion at high strength and satisfactory plasticity.1 dwg, 2 tbl, 1 ex

Hot-molded component of steel sheet and method of its manufacture and steel sheet for hot moulding // 2625374
FIELD: metallurgy.SUBSTANCE: sheet has the following chemical composition, wt %: 0.100 to 0.340 carbon, 0.50 to 2.00 silicon, 1.00 to 3.00 manganese, 0.050 or less phosphorus, 0.0100 or less sulfur, 0.001 to 1.000 soluble aluminium, 0.0100 or less nitrogen, the rest is iron and impurities. The steel structure of the obtained hot-stamped component contains ferrite, at least one of the phases - tempered martensite or tempered bainite, and martensite. The share of the ferrite area is from 5 to 50%, the total share of the tempered martensite and tempered bainite is from 20 to 70%, the share of martensite area is from 25 to 75%, and the total share of the area of the ferrite, tempered martensite, tempered bainite and martensite is 90% or more, and the share of residual austenite is from 0 to 5%.EFFECT: produced hot-stamped component has a high time resistance, high plasticity and flexibility after hot stamping.5 cl, 1 dwg, 4 tbl

ethod of metallic and composite blanks manufacture from sheet materials // 2625372
FIELD: metallurgy.SUBSTANCE: winding on mandrel is carried out simultaneously at least for two sheets of materials with different strength properties, rolled into rolls. Winding is carried out with tension of the wound sheet material with higher strength properties, which is 10-60% of its strength limit, and with tension of the wound sheet material with lower strength properties, up to 33% of its strength limit. The tension of material with higher strength properties is selected above the yield point of material in contact with it of material with lower strength properties. Wound layers are welded under pressure.EFFECT: increasing the density of winding, obtaining blanks with uniform chemical composition and uniform distribution of physical and mechanical properties along their cross-section.10 cl, 1 dwg

Steel sheet for hot forming and method of manufacturing hot-stamped steel elements // 2625369
FIELD: metallurgy.SUBSTANCE: steel sheet includes, in wt %, C: 0.15 to 0.35, Si: 1.0 to 3.0, Mn: 1.0 to 3.0, Al: more than 0 up to 0.10, Ti: from ([N]×48/14) to 0.10, where [N] is the amount of N in the steel sheet, B: from 5 million-1 up to 50 million-1, P: more than 0 up to less than 0.015, S: more than 0 up to 0.010 and N: more than 0 up to 0.010, the residue is iron and related impurities. The average oxygen concentration from the outer surface of the steel sheet to a depth of 10 mcm in the thickness direction of the sheet is 0.70 wt % or more.EFFECT: improved quality of hot stamping due to stable and reliable suppression of scale shedding, peeling during stamping.5 cl, 6 wg, 3 tbl, 2 ex
ethod of manufacturing ribbons from difficult-to-form alloy based on chrome // 2625361
FIELD: metallurgy.SUBSTANCE: ingot is obtained from an alloy containing, wt %: Ni 31-35, Ti 0.05-0.3, V 0.1-0.4; W 1-3, impurities - not more than: O 0.08, N 0.04, Si 0.1, Al 0.06, Fe 0.5, Σ(Al+Si) - 0.2, Cr - the rest, the ingot is subjected to homogenizing annealing by heating to a temperature of 1100-1200°C in a vacuum oven at a pressure of 0.1-1.0 Pa, holding and cooling to the shop temperature. The resulting billet is subjected to single or multiple operations in the following sequence: mechanical treatment, placing it in a capsule, degassing the capsule by vacuum treatment, sealing the capsule, heating the capsule with the billet in a furnace with a protective atmosphere to a temperature of 1150-1250°C, pressing the capsule with a billet with an extractive coefficient of 1.7-9.5 and a degree of deformation of 40-90% to obtain a rod of the given size. The capsule is made of structural steel, the yield point of which is 1.5-2 times less than the yield strength of the alloy.EFFECT: improving the quality of the rod, reducing the surface roughness and grinding the structure.1 tbl

Hot straight thick-gauge plate formed by pumping the product and method of manufacturing formed by stamping the product // 2625357
FIELD: metallurgy.SUBSTANCE: invention relates to the field of metallurgy, namely hot-stamped plate steel, suitable for producing a stamped article. Steel contains wt %: C: 0.15 to 0.5, Si: 0.2 to 3, Mn: 0.5 to 3, P: 0.05 or less (except 0), S: 0.05 or less (except 0), Al: 0.01 to 1, B: of 0.0002 to 0.01, N: 0.001 to 0.01, Ti: in the amount equal to or greater than 3.4[N]+0.01 and equal to or less than 3.4[N]+0.1, where [N] is the content (wt %) N, the rest are iron and unavoidable impurities. The average diameter of the equivalent circle of Ti-containing inclusions having an equivalent circle diameter of 30 nm or less among the Ti-containing inclusions contained in the steel sheet is 6 nm or more. The amount of Ti in the inclusions and the total amount of Ti in the steel satisfy the ratio: (the amount of Ti in the inclusions (wt %)-3.4[N]) < 0.5[×(Total amount of Ti (wt %)) - 3.4[N]], where [N] is the content (wt %) N in the steel. The share of ferrite in the metallographic microstructure is 30% or more.EFFECT: products have excellent characteristics of softening resistance in the heat affected zone and the required ratio between high strength and elasticity.6 cl, 1 dwg, 16 tbl, 2 ex

ethod for hardening helical cylindrical springs // 2625196
FIELD: machine engineering.SUBSTANCE: method involves winding the spring with a pitch exceeding the pitch of the finished spring, heat treatment, wheel blasting, lumo control, grinding of the ends of the heat-treated spring, compression of the spring until the coils touch. In the final stage, cold work hardening of the outer and inner surfaces of the compressed spring is carried out by blanking and cold work hardening of the compressed spring surface is carried out along the contact line of the coils by means of a hardening device when a compressed spring is located in a die hole. The cold work hardening of the outer and inner surfaces of the compressed spring is carried out by expanding the coils of the spring to the surface of the die hole with the punch entering it, wherein the diameter of the die hole is equal to the diameter of the compressed spring. The gap between the die hole and the punch surface is chosen less than the diameter of the coil spring by 0.2…5 mm. The cold work hardening of the compressed spring surface along the contact line of the coils is carried out by compressing the springs with a force of 5…300F3, where F3 is the spring force at maximum deformation.EFFECT: increased productivity of hardening and the stability of the elastic properties of the spring.3 cl, 3 dwg

ethod of manufacturing ring // 2624882
FIELD: metallurgy.SUBSTANCE: workpiece of a closed shape with a central slit is cut from the metal plate. Herewith the outer surface and the surface of the central hole are equidistant. The workpiece is located between the bending and thrust rollers of the roll forming machine and its individual sections are bent with increasing or decreasing its curvature radii.EFFECT: increasing the accuracy of the parts.4 cl, 6 dwg

Forming method with sheet metal products simultaneous heat hardening // 2624753
FIELD: metallurgy.SUBSTANCE: products from sheet metal forming is carried out. Then, through the pipelines in the central axial part of the matrix die and the punch supply the coolant, which is spreading along the evenly located radial ducts, from the center of the punch and the matrix die to its periphery, washes the upper and the lower parts of the article to perform the heat hardening of the article. After the product heat hardening, the coolant is collected in the tray and discharged through the side drain.EFFECT: products quality increase.6 cl, 3 dwg

ethod of sheet manufacture from ti - 6al - 2sn - 4zr - 2mo alloy with regulated texture // 2624748
FIELD: metallurgy.SUBSTANCE: method of sheet manufacture from heat-resistant Ti-6Al-2Sn-4Zr-2Mo alloy includes pre-treatment of an ingot by forging or moulding in - zone producing βa slab, hot longitudinal slab rolling to a semi-finished rolled product with further annealing and etching, cutting the semi-finished rolled stock to sheet blanks, their finishing and matching, pack transverse rolling to a sheet blank, followed by annealing and finishing of the produced sheets. The hot longitudinal slab rolling to a semi-finished rolled product is carried out in stages. At the first stage - at a heating temperature in (α+β)-area of Polymorphic Transformation Temperature (PTT)-(20÷60)°C and a total deformation degree of 25-30%, at the second stage - at a heating temperature in β-area of PTT+(80÷120)°C and a total deformation degree of 80-95%, at the final stage - no less than single rolling at a heating temperature in (α+β)-area of PTT-(20÷65)°C with a total deformation degree of 20-60%, pack transverse rolling is carried out in two stages in (α+β) -area at a heating temperature of PTT-(30÷60)°C with a total deformation degree of the package of 50-85% and with intermediate and final annealing. The ratio of the total deformation degrees of the final longitudinal semi-rolling of semi-finished rolled stock and transverse rolling of the package in (α+β) -area is no more than 10%.EFFECT: produced sheets of thickness up to 0,4 mm are characterized by low anisotropy of mechanical properties and homogeneous structure, satisfactory surface quality.2 dwg, 3 tbl

ethod of gear wheel manufacture // 2624536
FIELD: machine engineering.SUBSTANCE: method includes manufacturing a disc with an external technological allowance. Plastic deformation of the disk portion in the form of a ring is performed by forging. The disc is intended for cutting the rim of the gear wheel. Preliminarily prior to the forging and in its process, the said portion is heated. The width of the portion along the radius of the workpiece is chosen to be equal to the height of the gear rim, with an increase in the width of the technological allowance along the outer perimeter of the workpiece and the width of the technological allowance for forging from the center of the workpiece.EFFECT: improved mechanical characteristics of the gear wheel.1 dwg

Obtained by pressing in the form products and its manufacturing method // 2624260
FIELD: machine engineering.SUBSTANCE: resulting compression molded product (100) is formed by bend the blank (B) to split the workpiece into a first flat member (10) and a second flat member (20), with the inflection portion located between them, and bringing the first planar member and second flat part in contact with each other by bending. The first flat part and second flat part include carved portions (11, 21) formed by punching the workpiece and a first projecting portion (12) and a second projecting portion (22) formed by raising cut down edge portion. There is a mounting portion (40) that sets a predetermined position of the first flat member and the second flat member by combining the first projecting portion of the first planar member with the second protruding portion of the second planar member. The protruding portion of the first planar member has a guide portion for guiding the second projecting portion projecting in the flat part of the first planar member.EFFECT: exclusion of increasing weight of the product.12 cl, 13 dwg

etal packaging with tube part // 2624181
FIELD: transportation.SUBSTANCE: invention relates to the metal packaging, containing the tube part (1), with the longitudinal axis (1'). According to the invention, the tube part (1) contains the monoblock ring-shaped structure (10), consisting of several bosses (11), disposed in the plane (13), extending perpendicularly to the above mentioned longitudinal axis (1'), and along the circle of the above mentioned tube part (1) to form the lower circular surface (12), which is designed to stop the lifting-transporting mechanism. In this case the bosses (11) protrude inward and/or outward of the tube part (1), and each boss extends only on the package tube part circle part, the mentioned several bosses is being distributed along the tube part circle and the monoblock structure contains one or several gaps (20). The base of at least one of the gaps (20) extends along the circle or at least approximately along the package tube part circle.EFFECT: package reliability increase.12 cl, 17 dwg

ethod of manufacture of couplings from alloy with shape memory // 2623977
FIELD: metallurgy.SUBSTANCE: coupling is made of Ti-Ni-Nb-Zr alloy with the following element content (at. %): Ti - from 42.9 to 43.6, Ni - from 45.3 to 46.1, Nb - from 8.4 to 9.6, Zr - from 1.5 to 3. The coupling is annealed in a vacuum at a temperature of 800-850°C for 3.5-4 hours, followed by cooling. After that, the coupling is expanded at a temperature of -75°C to +10°C.EFFECT: it is possible to expand the coupling at a temperature higher than the cryogenic temperature and to store the manufactured coupling at room temperature and above.3 dwg, 1 dwg, 2 tbl, 1 ex
Square billet production method // 2623976
FIELD: metallurgy.SUBSTANCE: method includes the manufacturing of the continuously cast slab and its multipass rolling. The multipass rolling is carried out in the rolls of the sheet mill with the relative reduction of not more than 35% and the total relative reduction not less than 40% in the roll of the rectangular section with thickness not exceeding 150 mm, at that using rollers with the smooth barrel of at least (B+150) mm width, where B is the width of the continuously cast slab, and then provide the automated longitudinal roll-out of the roll into the square blank with the side of the square from 90 to 150 mm by the gas-cutting machine at the pressure of combustible gas not less than 245 kPa and the cutting oxygen pressure of not less than 1400 kPa with the cutting speed of not more than 190 mm/min.EFFECT: expansion of the sheet rolling mills equipment technological capabilities due to the production of the roll to produce the square billet without using the of the blooming-billet mills.4 tbl
ethod of manufacturing springs and unit for its embodiment // 2623968
FIELD: technological processes.SUBSTANCE: method of manufacturing springs involves feeding and heating the wound material, winding the vertical mandrel, immersing the mandrel with the wound spring into the quenching bath, moving the mandrel with the wound spring through the quenching bath from the immersion place, removing the spring from the mandrel, provided that the time is combined with the other springs. After the spring removal from the mandrel, the spring is released in the specified direction by means of a spring removal mechanism from the mandrel in the form of a tray with hooks mounted on the drive shaft. To implement the method, an assembly is used for manufacturing springs, which are kinematically connected devices and assemblies.EFFECT: increasing productivity of the manufacturing springs due to the time-aligned operations.2 cl, 2 dwg
 
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